Plural-switch Number Input Device (e.g., Keypad) Patents (Class 379/368)
  • Patent number: 6525677
    Abstract: An optical laser numeric keypad (100) provides a digital signal indicative of which of a plurality of key locations is selected. The optical laser numeric keypad (100) comprises a plurality of optical sensors (132 and 134) each configured to respond to a change in a received light quantity and to provide an electrical signal in response to a selection of a key at a key location. The received light quantity of at least one of the plurality of optical sensors (132 and 134) is changeable by selection of a key location.
    Type: Grant
    Filed: August 28, 2000
    Date of Patent: February 25, 2003
    Assignee: Motorola, Inc.
    Inventor: George A. Printzis
  • Publication number: 20030025618
    Abstract: This invention relates to a novel and logical way of using twelve sensors for data representation or data entry coding. This invention also relates to a method of producing alphanumeric data using short duration or long duration twelve sensor activation, simultaneous activation and/or sequential activation. Activating one of the ten numbered sensors produces numbers. Activating a first left sensor of a second set of three sensors exits the number mode and enters a data character mode. Activating a third right sensor of a second set of three sensors exits the data character mode and re-enters the number mode. The twelve sensor set enters a shiftable data character mode when a first left sensor of the second set of three sensors is activated two or three times. Activating a sensor of a first set of nine sensors in a data character mode produces a data character.
    Type: Application
    Filed: July 20, 2001
    Publication date: February 6, 2003
    Inventor: James W. Burrell
  • Patent number: 6512827
    Abstract: A water-proof structure of a key sheet periphery portion of a portable terminal device. The device includes an upper cover having a rib with a substantially convex cross-section provided around an operating portion, a printed board for receiving an operation input from the operating portion, and a key sheet provided between the upper cover and the printed board, having a rib with a substantially convex cross-section provided contacting with the printed board with a center shared with the rib with the substantially convex cross-section provided in the upper cover. The key sheet is provided with input buttons (key top) constituting the operating portion.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: January 28, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Toshiyasu Kitamura
  • Publication number: 20020196163
    Abstract: The present invention relates to a method and apparatus for explicit filtering in ambiguous text entry. The invention provides embodiments including various explicit text entry methodologies, such as 2-key and long pressing. The invention also provides means for matching words in a database using build around methodology, stem locking methodology, word completion methodology, and n-gram searches.
    Type: Application
    Filed: June 20, 2002
    Publication date: December 26, 2002
    Inventors: Ethan Robert Bradford, Keith Charles Hullfish, David J. Kay, Pim Van Meurs, Michael R. Longe
  • Patent number: 6483913
    Abstract: A method for a human user to interactively enter an alphanumeric text message into a multiline display device (12) using a keypad (14) containing a number of keys. On one portion (22) of the display, the alphanumeric text message that the user is entering is displayed. On a second portion (23) of the display, a listing of subsets (24, 25) of alphanumeric symbols is shown, with each subset being mapped to a corresponding key on the keypad. The user selects the subset of alphanumeric symbols containing the one alphanumeric symbol to be entered into the alphanumeric text message and depresses the key that is mapped to the selected subset. In response to this action, the second portion of the display then changes to show the alphanumeric symbols contained in the selected subset, with each alphanumeric symbol mapped to a specific key on the keypad. The user then selects the desired alphanumeric symbol and depresses the proper key.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: November 19, 2002
    Assignee: Motorola, Inc.
    Inventor: Edwin Derek Smith
  • Patent number: 6459390
    Abstract: A method for inputting a plurality of characters in a wireless portable terminal of the type having a memory for storing a plurality of characters and a plurality of indices associated with each one of the plurality of characters, comprising the steps of: determining if a mode for inputting a character is selected; displaying at least one character along with at least one index associated thereto in response to the selection of the character-input mode; determining if the key data corresponding to the index is inputted; and, displaying and storing the associated character corresponding to the index when the key data corresponding to the index is inputted.
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: October 1, 2002
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Ho-Kyu Kim
  • Patent number: 6453170
    Abstract: A user interface, and an associated method, facilitates operation of a mobile station by a physically-disabled user. In one implementation, concave-shaped face covers are provided for the telephonic keypad of a mobile station to facilitate its usage by a physically-disabled user. In another implementation, the mobile station is provided with a TTY (telecommunications device), also to facilitate operation of the mobile station by a physically-disabled user. And, in another implementation, a location-request signal generator, carriable by a user, generated a location-request signal upon actuation by the user. The mobile station includes a local receiver for receiving the location-request signal and an annunciator for annunciating reception of the location-request signal. If the mobile station becomes misplaced, a user actuates the location-request signal generator, and the annunciation signal generated responsive to detection of such signal at the mobile station facilitates location of the mobile station.
    Type: Grant
    Filed: December 31, 1998
    Date of Patent: September 17, 2002
    Assignee: Nokia Corporation
    Inventors: Steve List, Harri Kiljander, Robert Houston, Nancy Longbottom
  • Publication number: 20020090081
    Abstract: An improved alphabet entry method is provided in which several particular keys are added to provide favorable operability when a sentence is entered with selection of an entry word candidate from a plurality of possible letter strings based on typing through a search of a word dictionary. Each of some of data keys (132 to 139) is assigned a plurality of letters of the alphabet, and each of some of the other data keys (131, 141) and some of control keys (117, 119, 120, and 122) is assigned only one of particular letters (A, S, U, E, I, and O) of the plurality of letters assigned to the some of the data keys simultaneously with the assignment to the some keys. Since an operator performs entry with the keys assigned only the particular letters to determine some letters in a letter string to be entered, candidates for a word are narrowed down to allow efficient word entry.
    Type: Application
    Filed: February 26, 2001
    Publication date: July 11, 2002
    Inventor: Takuo Kitamura
  • Publication number: 20020071545
    Abstract: A system and method for providing a uniform interface on heterogeneous access devices, that are capable of requesting specified classes of information from a server. Access devices, such as those that access Internet content, are often of different hardware and software configurations. Each access device displays a similar interface, for example, an interface similar to the touchpad of a telephone. The interfaces are configured so that similar keys included in the interfaces of different access devices request a similar specified classes of information. Then, when similar keys on different access devices are selected by a user, the selection causes the access devices to request a similar specified class of information. Thus, users of access devices with differing configurations become accustomed to similar keys requesting similar specified classes of information. This makes the interface easier to learn and less confusing for users.
    Type: Application
    Filed: December 12, 2000
    Publication date: June 13, 2002
    Inventor: Kary K. Burns
  • Patent number: 6396007
    Abstract: The installation switch includes an installation box (10) having a support plate (15) for attachment to a wall. Arranged in front of the installation housing (10) is a base portion (18) carrying a touch panel (19). The touch panel (19) comprises a transparent plate provided with transparent switch elements and projects into the room.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: May 28, 2002
    Assignee: Merten GmbH & Co. KG
    Inventor: Richard Vicktorius
  • Publication number: 20020054676
    Abstract: An apparatus and method for telephony tone signal and character code generation for QWERTY keyboards includes a QWERTY style keyboard, a processor and a keyboard mode control software module. The QWERTY style keyboard has a plurality of letter keys, wherein each letter key is configured to generate a unique input signal. The processor is coupled to the keyboard and is configured to convert each unique input signal generated by the letter keys into a character code and/or a telephony tone signal. The keyboard mode control software module operates on the processor, and controls whether the processor converts the unique input signals from the letter keys into character codes or telephony tone signals.
    Type: Application
    Filed: November 1, 2001
    Publication date: May 9, 2002
    Inventors: Wen Zhao, Runbo Fu, Xin Jin, Pokin Yeung, Karen A. Rudnitski
  • Patent number: 6383604
    Abstract: In the present invention, a molding process of keptops is performed by inserting a previously silk-printed thin film into a mold. Therefore, it is possible to implement a small sized and light product by connecting a plurality of keytops using a film, and a tactile feel of a user is increased. In addition, in the present invention, since a silk printing process is not required, the productivity of a keytop sheet is enhanced, and it is possible to decrease the defect rate of the product compared to the conventional art.
    Type: Grant
    Filed: October 6, 1999
    Date of Patent: May 7, 2002
    Assignee: LG Information & Communications, Ltd.
    Inventors: Sung Tae Yoo, Chul Jin Kim
  • Patent number: 6378234
    Abstract: A keyboard having fewer keys than the characters available utilizes linked sequences of keystrokes in generation of some characters. Other characters may be produced with one keystroke. The difference between linked keystrokes and independent keystrokes both made in sequence is determined by either the length of the interval between keystrokes or use of a delimiting key. A threshold level for the interval between keystrokes which decides whether two sequential keystrokes are linked or not may be set by the user or may be automatically determined with the use of an adaptive predictive algorithm. It is generally suggested that pairs of keys be linked, particularly adjacent pairs of keys in a fixed configuration, and that the characters generated by either a single keystroke of a given key or the characters generated by two linked keystrokes be represented upon the keyboard in a disposition which facilitates intuitive learning of the keyboard.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: April 30, 2002
    Inventor: Ching-Hsing Luo
  • Patent number: 6377685
    Abstract: A cluster key arrangement may be mechanically configured or electronically configured. The cluster key arrangement may include twelve cluster keys configured in an arrangement of three columns by four rows, such as conventionally found on standard telephones. The cluster key arrangement may also be configured for use on cellular/mobile telephones, television remote controls, other handheld data entry devices, automotive controls, desktop/wall-mounted/cordless telephones, combination telephone recorders, Personal Digital Assistants, and other electronic devices. The mechanically or electronically configured cluster keys provide a user with the ability to select one of a plurality of key elements representing numbers, letters, symbols, functions, etc., in a mutually exclusive manner.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: April 23, 2002
    Inventor: Ravi C. Krishnan
  • Patent number: 6346973
    Abstract: On the front surface of a single electroluminescent panel, there are provided a display panel, such as a liquid crystal display panel, for controlling transmission of light to perform display, and an operation panel having a plurality of operation switches and substantially transmitting light through at least a portion thereof which requires illumination. When the overall rear surfaces of the display panel and the liquid crystal display panel are adhered to the electroluminescent panel by an adhesive, the vibration sound generated from the electroluminescent panel can be reduced. Further, when an appropriate pigment is diffused into the adhesive, light for illuminating the display panel and the operation panel is adjusted to a desired color.
    Type: Grant
    Filed: November 4, 1997
    Date of Patent: February 12, 2002
    Assignee: Casio Computer Co., Ltd.
    Inventors: Masaaki Shibamoto, Katsunobu Sakaishi, Masami Hiramoto, Hirokazu Saito, Kazuhiro Sugiyama
  • Patent number: 6339643
    Abstract: Apparatus and process for allowing a user to selectively disable all or a portion of the manual controls, e.g., the keypad and/or other buttons (including switches, keys, on-hook button, and/or other buttons) of customer premises equipment. The customer premises equipment includes a button disabling module which allows subsequent control signals relating to the particular keys or buttons which have been disabled to be essentially ignored. Thus, for instance, if an on-hook button is inadvertently depressed while the on-hook button has been disabled by the button disabling module, the telephone line interface of the telephone will not signal the termination of the telephone call to the central office. The manual controls of the customer premises equipment can be disabled by the user in any of a number of different ways.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: January 15, 2002
    Assignee: Agere Systems Guardian Corp.
    Inventors: Angelo Rocco Mastrocola, James Skorko, John P. Veschi
  • Publication number: 20010055383
    Abstract: A call transmitter for the input of control commands, in particular for an elevator installation, has at least one carrier element that can be selectively received in an opening in either end face of a call transmitter housing. The housing has an inner positioning element preventing movement of the carrier element between the openings. The housing can be installed in an aperture in a front plate such that either the first end face and the carrier element are flush with the outer surface of the front plate, or a radially outwardly extending flange at the second end face abuts the outer surface with the flange and the carrier element projecting.
    Type: Application
    Filed: June 20, 2001
    Publication date: December 27, 2001
    Inventor: Hugo Felder
  • Patent number: 6326906
    Abstract: A keyboard has key positions providable with keys. A number of the key positions are actually provided with keys, whereas at least one other key position has a mode setting option. The mode setting option provides a feature that is readable by a microprocessor connected to the keyboard. Such features include pulse dialing parameters such as a pulse rate, a pulse width, and a pulse pause, or tone dialing parameters, or the like.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: December 4, 2001
    Assignee: U.S. Philips Corporation
    Inventor: Franciscus J. M. Thus
  • Patent number: 6320963
    Abstract: A secrecy cover for a key pad having a 3×4 matrix of pressure operated depressible keys provides a five-sided casement defining a medial cavity to fit over a matrix of keys of the touch tone key pad to secret entry of one or more sequences of up to three sequential digits of a multidigit number entered into the key pads. The casement face provides at least two lineally arrayed unmarked operator keys that are depressible in predetermined sequence to move one of at least two elongate operator bars of operating mechanism carried within the casement chamber. Each operator bar carries a key depressor movable thereon between at least two alternative positions to depress one potentially depressible key pad key aligned beneath the operator bar. The key depressors are digitally movable by an operator to predetermined positions over a key pad key before placement of the secrecy cover on a key pad.
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: November 20, 2001
    Inventor: George R. Whitney
  • Publication number: 20010040964
    Abstract: A portable communication apparatus includes arrow keys for moving a highlight bar to select one of a plurality of information items displayed on screen and an Enter key for executing a selected information item. The arrow keys and the Enter key are disposed close to each other within one area on the housing.
    Type: Application
    Filed: November 17, 1998
    Publication date: November 15, 2001
    Inventor: MANABU DEGUCHI
  • Patent number: 6310609
    Abstract: A user interface with guide lights for a communications device, such as a mobile telephone, is provided to assist a user in the correct and efficient operation of the device having a display, and a keypad which contains a numerical 10-key and other control keys. The user interface includes a means for identifying the appropriate keys on the keypad which correspond to the step or steps required to activate a desired operation to be performed within the device. In the preferred embodiment, identification of the appropriate keys is achieved using a light source which is mounted beneath each translucent key so that when the light source is illuminated, the key associated with that light source will be identified to the user. The intensity of the light sources is variable and may be controlled to provide sufficient contrast to read all keys in low ambient light while highlighting the keys to be pressed for operation of the desired function.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: October 30, 2001
    Assignee: Nokia Mobile Phones Limited
    Inventor: Angela Morgenthaler
  • Patent number: 6304646
    Abstract: A man-machine interface device for a telephone terminal for selecting options offered to the user when using services offering such options indicates to the terminal the various options that can be selected and determines, in a manner specific to each terminal, the mode of presentation of the options to the user for the purpose of making the selection.
    Type: Grant
    Filed: May 21, 1997
    Date of Patent: October 16, 2001
    Assignee: Alcatel Mobile Phones
    Inventors: Patrick Liot, Francis Pinault, Frédéric Vasnier
  • Publication number: 20010028712
    Abstract: A keyboard which may be utilized in either an expanded or contracted state. The keyboard is comprised of an expandable and compressible housing which supports a plurality of elastic belts. Keyswitch assemblies are fastened to the elastic belt. When the keyboard housing is expanded, the elastic belts are stretched, and the distance between the keys is increased. The keytops can be of variable size so that upon expansion, they increase in size. The keytops can also rotate upon expansion to increase the striking surface of the keytop.
    Type: Application
    Filed: February 1, 2001
    Publication date: October 11, 2001
    Inventor: Roy J. Lahr
  • Patent number: 6298107
    Abstract: A digital cordless telecommunications unit that serves for communications when paired with a similar unit and connected with a network is disclosed. The unit receives and transmits analog voice signals and also transmits digital baseband signals and receives digital formatted baseband signals. The unit includes a baseband chip, as well as an audio functions block and a system control functions block. The audio functions block comprises an audio front end for receiving and transmitting the analog voice signals and an adaptive differential pulse code modulator codec, connected to the audio front end. The codec converts the analog voice signals to the digital baseband signals and converts the digital formatted baseband signals to the analog voice signals for transmission.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: October 2, 2001
    Assignee: Legerity, Inc.
    Inventor: Jacqueline Mullins
  • Patent number: 6292562
    Abstract: A keypad for telephones and the like, preferably mobile telephones. There is provided at least one actuating mechanism (1) for stepwise input of call symbols. There is provided an additional mechanism for confirming the respective stepwise selected symbols or this consists of the actual actuating mechanism, pressure on or bending of the actuating mechanism causing the selection of symbols to be carried out. The actuating mechanism may consist of the telephone housing in that the housing is divided into an upper part (5) and a lower part (4) which are rotatable relative to one another, by a wheel (1) that is rotatable relative to the housing, and that is provided with call symbols or interacts with a scale provided with call symbols, a sliding key which can be moved in a groove provided in the telephone housing or on a slide bar affixed to the housing, or one or more keys for moving a marker in a menu on a display device (3).
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: September 18, 2001
    Assignee: Telenostra AS
    Inventor: Ziad Badarneh
  • Patent number: 6263070
    Abstract: A telephone including a case; an operation part, located at a front of the case, having a light transmission property and a plurality of key tops arranged on a front surface thereof; a circuit substrate, provided inside the case and having a sheet-luminescent-member driving circuit; and a sheet luminescent member, provided at a rear of the operation part, between the circuit substrate and the case. Light emitted by the sheet luminescent member fully illuminates each key top from the rear surface thereof.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: July 17, 2001
    Assignee: Fujitsu Limited
    Inventors: Hiroshi Kubo, Hidekatsu Kobayashi, Masashi Tomura
  • Publication number: 20010003539
    Abstract: There is disclosed a telephone keypad apparatus having a dual-switch button in which each of switch contacts can be individually operated depending on the locations at which the buttons are pushed, by mounting two switches for every button in the telephone keypad. In accordance with the present invention, in a telephone keypad in which twelve push buttons are arranged in a grid shape, each of the buttons has two switches for connecting/disconnecting an electrical flow and the buttons are pushed freely right and left. If the left of the button key cap is pushed the left switch is connected, if the right of the button key cap is pushed the right switch is connected and if the middle of the button key cap is pushed both the switches are connected.
    Type: Application
    Filed: December 7, 2000
    Publication date: June 14, 2001
    Inventors: Jin Ho Hahm, Jung Soo Park
  • Patent number: 6244873
    Abstract: Myoelectric and wireless technologies are used for the control of a portable electronic device, such as a cellular telephone or a personal digital assistant (PDA). That is, a portable electronic device has a wireless myoelectric user interface. An apparatus includes a material which forms a forearm or wrist band, myoelectric sensors attached to the band, a digital processor coupled to the myoelectric sensors, and a wireless transmitter coupled to the digital processor. The apparatus is operative to sense and detect particular hand and/or finger gestures, and to broadcast control signals corresponding to the gestures for operative control of the portable electronic device.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: June 12, 2001
    Assignee: AT&T Corp.
    Inventors: William Colyer Hill, Fernando Carlos Pereira, Yoram Singer, Loren Gilbert Terveen
  • Patent number: 6243460
    Abstract: A telephone that has dual keypads, wherein one of the keypads is a standard 12 number (1-9, 0, #, and *) keypad and the other keypad comprises a plurality of keys having a single character on each key. When a character key is pressed, it generates a DTMF pair corresponding to one of the 12 standard DTMF pairs.
    Type: Grant
    Filed: October 14, 1994
    Date of Patent: June 5, 2001
    Assignee: Lucent Technologies Inc.
    Inventor: Satyasai Bhagavatula
  • Patent number: 6239726
    Abstract: A pushbutton arrangement includes a pushbutton switch mounted on a substrate and the pushbutton switch has an actuating position. The pushbutton arrangement further includes a supporting member fixed to the substrate and a button operation member for pushing the actuating portion of the pushbutton switch. An elastic connection member is fixed to the supporting member at one end thereof and has the button operation member fixed at the other end thereof so that the button operation member is placed on the actuating portion of the pushbutton switch.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: May 29, 2001
    Assignee: NEC Corporation
    Inventor: Yoshihide Saida
  • Patent number: 6236724
    Abstract: A method of generation and detection of acoustic signals carrying alpha-numeric data for reducing the effects of noise and thereby improving signal transmission without the need to boost the power of the signal. In accordance with one aspect of the invention, a special DTMF acoustic signal consisting of a combination of two frequencies will be generated for the representation of a particular alpha-numeric character that will be similar to the standard DTMF tone. The difference between the amplitudes of both frequencies varies during the time of generation of the DTMF tone in such a way that both signals will arrive at a final destination detector, i.e., an interactive voice response board, at least for a portion of the generation time, at a relatively similar amplitude, thereby substantially increasing the probabilities of being recognized as a DTMF signal.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: May 22, 2001
    Assignee: Enco-Tone Ltd.
    Inventors: Isaac J. Labaton, Michael K. Kelly
  • Patent number: 6229994
    Abstract: A fitting device is formed by a mat of elastic material having a keyboard and a housing for a display panel. The mat further includes an extension part beyond the housing, formed by a locking frame which can be folded onto the housing and has fasteners in a bent-away position. A handset is provided with the fitting device and includes positioners for positioning the fitting device relative to the handset housing.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: May 8, 2001
    Assignee: U.S. Philips Corporation
    Inventor: Franck Pavet
  • Patent number: 6222466
    Abstract: The invention is related to a method and a device for use in an apparatus, preferably a portable radiotelephone, equipped with a number of keys. Upon activation of a key, the device detects which key has been activated. The device comprises a signal generating unit which generates an oscillating signal whose character, e.g. frequency, unambiguously corresponds to the activated key. A signal detecting unit determines from the character of the oscillating signal a digital value which unambiguously indicates which key has been activated. An advantage offered by the invention is that the device can be implemented by use of simpler and cheaper circuits than prior known devices of similar type.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: April 24, 2001
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Johan G. M. Uggmark
  • Patent number: 6212271
    Abstract: A set of identifiers (for example, the name of a party and the associated telephone number) is stored in the memory of telephone apparatus. Sequential retrieval of the stored identifiers is facilitated by the use of a prominent button that is oversized relative to the size of the buttons of a conventional telephone keypad. Retrieved identifiers are indicated visually, aurally, and/or tactilely. Selection of an indicated identifier initiates a call to the party represented by the identifier.
    Type: Grant
    Filed: July 23, 1998
    Date of Patent: April 3, 2001
    Assignee: Lucent Technologies, Inc.
    Inventors: Diane L. Hughes, Scott Wayne McLellan, Doreen M. Micheletti
  • Patent number: 6208730
    Abstract: A key top attachment structure which makes the key-top attachment work easy, prevents the key top from being taken off from the outside, and suppresses looseness of the key top. A spring (11) provided with a rectangular hole (14), and lock portions (12A, 12B and 13) in which corresponding stoppers (22A, 22B and 23) of a key top (2) are to be locked respectively, are provided in a casing (1) of a small-sized electronic equipment such as an inter-call receiver or the like. A protrusion (21) which pushes the spring (11) at the time of attachment, a protrusion (24) which abuts against the spring (11) after attachment, a protrusion (25) which turns on a switch (3) on a printed board (4), and the stoppers (22A, 22B and 23) are provided in the key top (2).
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: March 27, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazuhiro Ikeda, Shuuichi Sugawara, Kenichi Nishikawa
  • Patent number: 6184803
    Abstract: This invention relates to a novel and way to use a twelve button telephone keypad for alphanumeric data entry. This invention also relates to a method of alphanumeric data entry using short duration or long duration binary key actuations using a simultaneous coding system and/or sequential coding system for communicating on a standard twelve key push-button telephone keypad. Two binary keys are used for an all capital letter mode or two binary keys for a lower-case letter mode, along with three binary keys for an upper-case letter mode, for producing full alphanumeric text, including punctuation, symbols and control.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: February 6, 2001
    Inventor: James W. Burrell, IV
  • Patent number: 6172625
    Abstract: A microprocessor 11 receives an ambiguous input from a key 2-9 and disambiguates the ambiguous input using a dictionary. The dictionary is stored in an efficient manner by being partitioned according to the first three letters of a word. A sequence of three letters in the dictionary is stored as eight bits of data, the first three letters of a word being stored using three pairs of bits, such that each pair of bits represents one of no more than four alternative letters.
    Type: Grant
    Filed: July 6, 1999
    Date of Patent: January 9, 2001
    Assignee: Motorola, Inc.
    Inventors: Guo Jin, Sreeram Balakrishnan
  • Patent number: 6148075
    Abstract: An illuminated button including a key button and an electroluminescent light (EL) for illuminating the key button from its bottom. The key button is composed of a silicone rubber material mixed with white color particles which prevent, while the EL is inoperative, a pink light reflected from the EL from being projected to the outside through the key button. This makes possible to solve a problem of a conventional illuminated button, which includes a key button and a white light EL used as a backlight, in that the pink color of the EL is seen from the outside through the key button, and this spoils the beauty of the illuminated button.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: November 14, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshiya Inubushi, Koji Saito, Tsutomu Inoue
  • Patent number: 6144732
    Abstract: A telephone set comprised of a top part, a bottom part, a cover plate and a plurality of pushbutton keys. The keys fit into a plurality of oversize apertures in the top part and are held in place by the cover plate. A paper underlay is positioned over the cover plate to obscure apertures that do not contain keys. The oversize apertures in the top part allow the pushbutton keys to be removed without separating the top part from the bottom part.
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: November 7, 2000
    Assignee: Teledex Corporation
    Inventors: Mario E. Jauregui, Simon N. Ancri
  • Patent number: 6130628
    Abstract: In a keyboard with a restricted number of input keys, shifting between upper-case and lower-case character letters is effected with a key which is otherwise available for character or symbol entry. The upper case shift is accomplished by actuating a control element while observing a particular timing condition. Toggling the control element allows for comfortable caps shifting.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: October 10, 2000
    Assignee: Siemens Aktiengesellschaft
    Inventors: Matthias Schneider-Hufschmidt, Rainer Volland
  • Patent number: 6125180
    Abstract: A telephone utilizes a grid of light beams to generate signals that are unique to particular key regions of the telephone in response to interruptions of light beams that intersect at the particular key regions. The key regions of the telephone are arranged in a matrix of rows and columns and the light grid includes horizontally and vertically oriented pairs of light sources and photo detectors that have respective light beam paths passing through rows and columns of key regions. The intersection points of one of the horizontal and vertical light beam paths correspond to particular key regions. In one embodiment, the light sources and photo detectors are raised from a surface of the support structure such that the light beam paths cross the matrix of key regions at the exterior of the support structure.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: September 26, 2000
    Assignee: Siemens Information and Communication Networks, Inc.
    Inventors: Leland Lester, David Iglehart, Larry W. Coons, Michael Duncan
  • Patent number: 6111948
    Abstract: A method and apparatus for generating a signal indicative of a character in response to the path of a user's input is disclosed. The path of the user's input is detected. In response to this detection a signal indicative of a character is generated. The signal may be received by an electronic device.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: August 29, 2000
    Assignees: Sony Corporation, Sony Electronics Inc.
    Inventor: Edward A. Lygas
  • Patent number: 6108416
    Abstract: A communication device includes a keyboard with key functions and a microphone connected to the outside of the housing of the device by an acoustic path which opens to the outside of the device through one of the keys of the keyboard. The microphone is accommodated either on the inside of the key, or in another arbitrary area inside the device, while still being connected to the acoustic path by an acoustic channel.
    Type: Grant
    Filed: April 10, 1998
    Date of Patent: August 22, 2000
    Assignee: U.S. Philips Corporation
    Inventors: Pascal Collin, Guillaume Leterrier
  • Patent number: 6061446
    Abstract: An improved mousepad (100) includes a telephone integrated therewith. A keypad (108) for the telephone is disposed beneath a mylar layer (130). The keypad (108) includes a plurality of capacitive switches (108a, 108b) disposed just beneath the mylar layer. In a mousepad mode, a mouse may be moved around the surface of the mylar in the standard fashion. In a telephone mode, the user may activate the keypad (108) by pressing the buttons which are viewable beneath the mylar.
    Type: Grant
    Filed: April 1, 1998
    Date of Patent: May 9, 2000
    Assignee: Siemens Information and Communication Networks, Inc.
    Inventors: Leland Lester, David Iglehart, Larry W. Coons, Michael Duncan
  • Patent number: 6054940
    Abstract: A secure keypad device incorporating measures to prohibit electronic eavesdropping. Random interrogation of the rows and/or columns of a keypad matrix is employed to determine which key has been pressed. Implementation of the random interrogation process utilizes the mathematical factorial (!) function in conjunction with an algorithm that derives an interrogation sequence. A random number is generated and fed to an algorithm which will derive an interrogation sequence. The sequence is relayed to a keypad scanner which performs the actual interrogation in order to determine which key has been pressed. Further measures are taken to guard against electronic eavesdropping. For instance, the algorithm is designed to take the same amount of time for an unsuccessful key scan as it does for a successful key scan. Also, the time spent on an unpressed scan line is approximately equal to the time required to record a valid key press.
    Type: Grant
    Filed: February 9, 1998
    Date of Patent: April 25, 2000
    Assignee: Gilbarco Inc.
    Inventor: John C. Greene
  • Patent number: 6046730
    Abstract: A housing assembly for an ISDN multimedia capable wireless interface device having a plurality of operating capabilities. The housing assembly comprises a main housing, a cover, hinge assembly for coupling the cover to the main housing. The hinge assembly enables the cover to pivot and articulate relative to the main housing to transform the housing assembly into a plurality of mechanical configurations via sensors responsive to the pivoting and articulating of the cover provided in the housing assembly. The cover includes an illuminated keyboard having a display for selectively providing pixel-based graphics and light. The keyboard is disposed over the display when the device is operating in one of a plurality of operational modes. Each keypad of the keyboard has an image viewing surface and coherent light pipe mechanism for conducting light generated by the display to the image viewing surface the keypad.
    Type: Grant
    Filed: July 30, 1996
    Date of Patent: April 4, 2000
    Assignee: AT&T Corp
    Inventors: Donald John Bowen, David Michael Britz, Richard Henry Erving, Robert Raymond Miller
  • Patent number: 6043761
    Abstract: This invention relates to a novel way to use a twelve button telephone keypad for alphanumeric data entry. This invention also relates to a method of alphanumeric data entry using short duration or long duration binary key actuations using a simultaneous coding system and/or sequential coding system for communicating on a standard twelve key push-button telephone keypad. Two binary keys are used for an all capital letter mode or two binary keys for a lower-case letter mode, along with three binary keys for an upper-case letter mode, for producing full alphanumeric text, including punctuation, symbols and control.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: March 28, 2000
    Inventor: James W. Burrell, IV
  • Patent number: 6044152
    Abstract: The present invention provides an improved keyboard for a cellular telephone or the like. The improved keyboard includes an additional shielding layer which is added to the keypad to prevent RF leakage in the direction of the user. The shielding layer includes an insulating layer and a conductive layer. The conductive layer may be added in one of two ways. First, a conductive layer made of nickel foil or other suitable material may be molded directly into the keypad. Second, the conductive layer may be plated or painted on the surface of the keypad. In any such process, a layer of insulating material is added to the bottom surface of the conductive layer to prevent shorts. Finally, doping of the keypad may be used to improve the effectiveness of the shielding by using it with either of the aforementioned methods of implementation.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: March 28, 2000
    Assignee: Ericsson Inc.
    Inventor: Samuel V. Mendolia
  • Patent number: 6043760
    Abstract: In an apparatus with a limited keypad (100, 300) several characters can be associated with each key. Characters associated with a key are determined on the basis of the language selected (200) as the operating language of the apparatus. The apparatus comprises a memory element (302) which includes a certain part (302a) for storing information indicating which set of the possible characters entered as push-button commands is in use as well as character set tables (302b-n) for selectively associating certain characters with each key on the basis of the information in said part (302a).
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: March 28, 2000
    Assignee: Nokia Mobile Phones Ltd.
    Inventor: Kimmo Laakkonen
  • Patent number: 6041120
    Abstract: A hand telephone includes inside its cover a printed circuit board (4) with components, and a display (2) and an earpiece (3) as separate components. According to the invention, the printed circuit board (4) and at least part of the separate components (2, 3) are mounted on an installation mat (1) of an elastic material forming a continuous mounting and attachment base without any other attaching means. The installation mat (1) is at the same time an integrated part of the keypad (9) of the hand telephone. The installation mat packs (13) the components (2, 3) against the casing and at the same time serves as a shock absorber.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: March 21, 2000
    Assignee: Nokia Mobile Phones Limited
    Inventor: Jari Olkkola
  • Patent number: 4600126
    Abstract: A toothpaste extractor or dispenser having a pneumatic pump connected to a syringe assembly that injects compressed air inside a toothpaste tube thereby urging the phase out through a nozzle positioned above a carrier assembly where the user's toothbrush is engaged. The user's force pushing the carrier in actuates, through a linking assembly, the pneumatic pump. All of these elements are mounted within a housing assembly.
    Type: Grant
    Filed: October 1, 1984
    Date of Patent: July 15, 1986
    Assignee: Miguel A. Arango
    Inventor: Aurelia Arango