Abstract: Video signals (Y,U,V) from a telecine machine are accompanied by a blemish signal (D) (obtained for example by infra-red scanning of a color film) indicating the presence of scratches, dirt etc. This controls a switch (22) to substitute information from another part of the film (e.g. the previous frame, from a frame store 33). To prevent substitution with information also containing blemishes, the blemish signal in respect of the substitute information is made available (flag store 36) to suppress the substitution and switch to an alternative source such as a interpolator (31). The use of a movement detector, (not shown) to suppress substitution from another frame when motion occurs, is also described. The circuitry can be adapted for use in conjunction with a videotape dropout detector.

Abstract: A telephone interconnect system for a two-way radio communications system is disclosed. A telephone patch interconnect unit accepts dialed digits from a telephone line, encodes them into a data packet, and couples the data packet to a fixed transceiver for transmission to remote units. A remote unit with a digit sequence identification matching the received and decoded dialed digit activates an alert. A remote unit may generate and store digits corresponding to a desired telephone number. The digits are subsequently encoded into a data packet and transmitted to the telephone patch interconnect unit. The interconnect unit accepts, acknowledges and decodes the data packet and couples the resulting digits to the telephone line.

Abstract: A cordless telephone system includes a plurality of radiophones, each having a first transmitter and a first receiver of different transmission and reception frequencies; and a radio station, wired to a telephone line. The radio station comprises a second receiver and a second transmitter, each having the same reception and transmission frequencies as those of the radiophones; switching means for connecting an input terminal of the second transmitter and an output terminal of the second receiver to the telephone line, or for connecting the input terminal of the second transmitter and the output terminal of the second receiver; and control means for receiving a control signal from the second receiver and supplying a control signal to the switching means. Half duplex communication can be performed between the radiophones.

Abstract: A mobile telephone unit belongs to a mobile telephone system with a mobile telephone system and a paging system which cover an identical service area, are independently operated, and are connected through an exchange. The mobile telephone unit includes a telephone set connected to a radio transmitter/receiver and an automatic pager calling circuit. The automatic pager calling circuit includes a circuit for detecting and storing that an incoming call is made for a mobile subscriber who carries a pager and is away from a vehicle, and a circuit for sending a signal representing a preset pager number to the radio transmitter/receiver. The pager number signal for the radio transmitter/receiver is automatically sent by the paging system to the pager through the exchange, thereby calling the mobile subscriber.

Abstract: In an automatic call transfer system for use in carrying out transfer of a terminating call from one of telephone sets (T) to another through an exchange (11), a person identification number (ID) is assigned to each of persons movable in a limited area and is generated from a transmitter (TX) conveyed by each person. The limited area is divided into a plurality of zones (Z) which are defined by receivers (RX) connected through subscriber lines to the exchange, respectively, and which include at least one of the telephone sets, respectively. The person identification number is produced from a transmitter (TX) conveyed by each person and is received by a selected one of the receivers in the zone for the selected receiver to be sent through one of the subscriber lines (L) to the exchange. A line number of the one subscriber line is memorized in a memory of the exchange in correspondence to the person identification number and is changed as each person moves in the limited area.

Abstract: An interface system for interfacing a standard telephone set with a radio transceiver as part of a telephone network is provided. The radio transceiver may be a conventional cellular-type transceiver or other transceiver having typical control inputs and outputs similar to that provided by cellular transceivers. The interface system converts tone-dial or pulse-dial inputs from the telephone into a serial data stream for storage in the transceiver. The interface system automatically determines when the last numeral or digit is dialed and provides a send signal to the transceiver when such determination is made. The system responds to incoming call signals, such as alert signals, from the transceiver and rings the telephone accordingly. The system simulates ring and dial-tone type signals under conditions typical of standard telephone set usage.

Abstract: According to the invention, there is provided a cordless telephone apparatus having: a fixed unit and a portable unit, each having a control device for channel scanning to determine whether or not each of a plurality of channels is engaged, the portable unit being battery charged when it is attached to the fixed unit; a connecting line for transmitting and receiving signals between the two control devices when the portable unit is attached to the fixed unit; and a system for synchronizing the channel scanning processes of the two control devices through the connecting line.

Abstract: A data message transmission system for a cellular radiotelephone system is disclosed. Data to be transmitted is converted into a format compatible with radio transmission prior to transmission. The data is reconverted to its original format following reception. Handoff is accomplished by halting the data transmission prior to handoff and resuming data transmission after handoff. Call supervision occurs via busy-idle bit coding.

Abstract: A method of producing a video picture of an image comprises the steps of lighting the image at a light level equal to about a predetermined small fraction of the light level necessary to produce picture-element signals of an amplitude sufficient to process. The thus lighted image is then scanned and electrooptically reduced to a succession of sets of analog picture-element signals a predetermined number N of times, the number N being equal to the inverse of the predetermined small fraction. Thus for each portion of the image there is a respective picture-element signal in each succession. The signals of each image portion are then projected onto the same portion of a light-sensitive medium to form a picture of the image thereon. This medium is capable of adding each of the signals of each set to the signals of the other sets corresponding to the same image portion.

Abstract: A television camera includes a front bracket to which the pickup lens is secured. A pickup tube and yoke assembly including a yoke holder are slidably attached to the bracket in a mating circular cylindrical cavity. The tube is back focussed along the lens optical axis by a camming mechanism coupled between the bracket and the yoke holder. The yoke holder has a flange attached to the camming mechanism, the flange having a plurality of alignment slots for angularly positioning the pickup tube relative to the pickup lens.

Abstract: An optical imaging system for use as a solid-state camera, for example, which includes a plurality of solid-state elements for providing long-term storage of images, such elements being, for example, MNOS chips having a plurality of storage cells, which chips when exposed to an image focussed thereon can store a representation thereof. The chips are at a later time optically addressed, as by a scanning-light beam, to read out the stored image so as to provide an electrical output representing the stored image, such output being usable to provide a visual representation of the image such as on a display screen or in hard copy form.

Abstract: The present invention specifies a method for the verification of authenticity in a data carrier (1) by measuring permeability to an electromagnetic radiation in at least one region of the data carrier (1). Permeability is scanned over a regional area of the data carrier by means of a radiation detector (7) first in a calibration operation, in which the radiation intensity is adjusted, then in a reading operation at another position of the data carrier. The output signal of the detector (7) is coded and co-inscribed as additional information in a store of the data carrier with the information data during the initial inscribing of these data. In the reading and authenticity check scanning operation this information is compared with a corresponding additional information stored during the original data inscription.

Abstract: A cordless telephone having a base unit and a separate handset unit is operable in an intercom mode in which operators at the two units are in telephonic communication. If an incoming telephone call appears when the telephone is in the intercom mode, the loudspeaker of the handset unit and a ringer of the base unit both produce a ringing sound to announce the call. When one unit is then disabled by the operator thereof hanging up, the other unit is automatically connected to the telephone network line to receive the incoming call. The handset unit produces the ringing sound from its loudspeaker at a first volume when it is disabled and in a standby mode, and at a second lesser volume when it is enabled and in the intercom mode to avoid producing a loud ringing sound directly into the ear of the handset operator.

Abstract: A "bank" cash card system for handling fund transfer transactions between a payor and a payee having a magnetic "hysteresis" security arrangement. A cash card has a magnetic stripe on which the available cash balance, the identification and security information are scramble recorded. A transaction register machine reads data from the card, carries out the transaction and records the new account balance on the card. The modified information is "restored" on the card is in the form of a rescrambled code. The transaction register machine also includes a magnetic tape of the cassette type or disk for storing each transaction thereon for further processing of the information at a remote data processing center. The transaction register machine further includes a main keyboard on the side of the payee for displaying the cash balance, entering the total amount of the sale and recording the new cash balance on the card.

Abstract: A method of safeguarding against the re-transfer of uniquely recorded information on a data carrier (1) includes the recording of the information data and in addition thereto a simultaneously recording of an additional information on the data carrier (1) which reflects co-ordination characteristics relative to the data carrier. In order to carry out the method an apparatus is provided for recording and/or reading a re-transfer protected information on a data carrier (1) with a recording and/or reading device (4). The apparatus comprises a device (13) for detecting measurable properties (3) which are present at singular points of the data carrier (1) and for producing an additional information characterizing such properties.

Abstract: The present invention relates to a land mobile telephone system with enhanced operability realizing both the loud-speech and closed-speech operations by the single handset. The handset is installed detachably in a pad of a steering wheel of an automobile and having a power terminal for feeding electric power from an automobile-equipped battery to said handset devices when said handset is seated in the steering wheel pad, said controller having a speed mode selector which selects a loud-speech mode when said handset is seated in the steering wheel pad or selects a closed-speech mode when said handset is taken out of the steering wheel pad.

Abstract: A solid-state imaging device exposed to incident light ray for a predetermined period of time is driven such that photoelectric conversion signals produced therein are read out twice or more. The photoelectric conversion signals read out in sequence are added to each other such that two or more photoelectric conversion signals from each pixel are added to each other, to produce a resultant sum image signal. The photoelectric conversion signals from the solid-state imaging device may be digitally processed such that A/D converted signal resulted from a first time reading out from the solid-state imaging device is stored in a memory, and this signal is added to a subsequently A/D converted signal resulted from a second time reading out. In the case that the number of times of reading out from the solid-state imaging device is only two, the A/D converted signal resulted from the second time reading may be multiplied by a predetermined coefficient before addition.

Abstract: The system requires the use of the permanent ID of the requesting unit in every channel request made on a control channel before every transmission. The channel grant will include the ID along with the channel number and these may be recorded for possible later reference. A channel assignment is retained for a brief period after each transmission, allowing a conversation to be continued on the same channel without a break. Units can access the control channel with a channel request and be assigned a channel even while the dispatcher is using the voice channel. In the case of a need for communication with a larger group, a dispatcher can form a temporary "patch" group of all involved units, with a temporary ID assigned to that group. A channel request from a member of the larger group must then include, not only the permanent ID of the requesting unit, but the temporary ID of the "patch" group.

Abstract: A pay telephone having a housing is removably mounted on a mount. The mount and housing have cooperating pins and inclined slots arranged to retain the housing on the mount and permit the housing to be lifted from the mount. Locks mounted on the housing have movable members that engage a lip secured to the mount prevent the housing from being lifted from the mount. The movable members are turned with keys to positions which permit the housing to be lifted from the mount.

Abstract: A "dialess" telephone communicates with a user via a visual display to provide readily-understandable cues which permit voice-controlled dialing. A number to be dialed may be spoken digit-by-digit and dialed automatically or a name may be spoken and the telephone will automatically dial the number stored in a user's repertory corresponding to the spoken name. Additions to and changes of names and/or numbers within a user's repertory is accomplished vocally and in response to visually-displayed cues. Up to four users may have independent repertory calling lists stored within a memory of the dialess telephone.