Patents Assigned to Communication Networks, Inc.
  • Patent number: 6249540
    Abstract: A method and system are disclosed for shifting frequency subsets to avoid base station interference in a frequency hopping cordless telephone system. A base station communicates with the handsets using frequencies selected from active frequency subsets. Frequency subsets are shifted to avoid interference by selecting frequencies initially from a defined number of active frequency subsets where each of the active frequency subsets is used before repeating an active frequency subset. The number of active frequency subsets is then changed for a defined period of time to change the period with which the active frequency subsets are used. After the defined period of time, the number of active frequency subsets is returned to the defined number of active frequency subsets.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: June 19, 2001
    Assignee: Siemens Information and Communication Network, Inc.
    Inventors: Olaf Dicker, Paulus Sastrodjojo, Uwe Sydon, Juergen Kockmann
  • Patent number: 6249531
    Abstract: An apparatus and method for selectively compressing information to be transmitted over a communications network includes an analog line monitor connected to an analog telephone and an analog data communications device. The analog line monitor is configured for detection of carrier tone signals associated with data transmissions. An analog-to-digital/digital-to-analog (AD/DA) converter is connected to the analog line monitor to convert the information contained in transmissions from the analog telephone and the analog data communications device from an analog format to a digital format. Optionally, the AD/DA circuitry is configured for demodulating data prior to transmission over the network. Compression circuitry is responsive to detection of a carrier tone signal by the analog line monitor, such that detection of a carrier tone signal suppresses compression of data transmitted by the data communications device.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: June 19, 2001
    Assignee: Siemens Information & Communication Networks, Inc.
    Inventors: Eli Jacobi, Peter Kozdon, Mark Skrzynski
  • Patent number: 6243412
    Abstract: Received baseband signals from a plurality of antennas 111 to 11Q are linearly combined through multiplication by weighting coefficients, then a decision signal is delayed for one symbol duration, and the delayed signal is multiplied by a feedback filter coefficient wb* to generate intersymbol interference, which is subtracted from the linearly combined output y(i). The subtracted output is subjected to a signal decision to obtain a decision signal, then the difference between the input into a decision unit 17 and the decision signal is obtained as an error signal e(i), and weighting coefficients w1* to wQ* and the feedback filter coefficient wb* are estimated in a parameter estimation part 71 so that the square of the error signal e(i) is minimized.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: June 5, 2001
    Assignee: NTT Mobile Communications Network Inc.
    Inventor: Kazuhiko Fukawa
  • Patent number: 6240148
    Abstract: The present invention provides a path-diversity system featuring a small-size phase compensating circuit. This circuit calculates a compensating coefficient according to the signals of a pilot block or a pair of pilot blocks surrounding an information block, and then compensates information signals thereafter by the calculated compensating coefficient.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: May 29, 2001
    Assignees: NTT Mobile Communications Network, Inc., Yozan Inc.
    Inventors: Guoliang Shou, Changming Zhou, Xuping Zhou, Mamoru Sawahashi, Fumiyuki Adachi
  • Patent number: 6239881
    Abstract: An apparatus and method provide for selective transmission and reception of facsimile transmissions. A facsimile call is placed. A station identifier received from the other facsimile during the facsimile call is checked against a stored list of “acceptable” facsimile station identifiers. If a match is found, the transmission is allowed to proceed. If no match is found, the transmission is terminated. Alternatively, the termination can subject to an override by user selection, and the transmission can be allowed to proceed. In an alternative, the station identifier is checked against a list of “unacceptable” facsimile identifiers, and if a match is found the call is terminated; if no match is found, the transmission is allowed to proceed. In other alternatives, a transmission from a facsimile machine whose station identifier is not found on an “acceptable” list, or alternatively, whose station identifier is found on an “unacceptable” list, is stored.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: May 29, 2001
    Assignee: Siemens Information and Communication Networks, Inc.
    Inventors: Shmuel Shaffer, William Joseph Beyda
  • Patent number: 6240170
    Abstract: A method and apparatus for selecting a language to communicate with a user of a voice mail or computer system. A decoder decodes an automatic number identification (ANI) Caller_ID code or a user ID code to determine the telephone number or identity of the user. A language database stores a hierarchy of languages to be presented to the user based on the location or identity of the user. The user is prompted to confirm the language selection made. If the language is not appropriate, then the next language in the hierarchy is selected.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: May 29, 2001
    Assignee: Siemens Information and Communication Networks, Inc.
    Inventors: Shmuel Shaffer, William Joseph Beyda
  • Patent number: 6240070
    Abstract: A conferencing system (100) improves audio quality by identifying and selectively allowing a dominant audio channel to bypass a lossy compression transformation included in a server 102. The system (100) places conference calls over a network (106) and includes the conference server (102), having an input interface (200), a decompressor (202), a summation circuit (212), a correlation unit (206) a compressor (214), and an output interface (220). The input interface (200) receives a plurality of audio channels, each being compressed using a lossy compression algorithm. The decompressor (202) decompresses each of the incoming channels to produce a plurality of decompressed audio channels, which are then summed by the summation circuit (212) to produce a summation stream. The compressor (214) compresses the summation stream to produce a first audio output. The correlation unit (206) identifies a dominant channel from the incoming compressed audio channels.
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: May 29, 2001
    Assignee: Siemens Information and Communication Networks, Inc.
    Inventors: Peter Kozdon, Eli Jacobi, William J. Beyda
  • Patent number: 6240426
    Abstract: A system for connecting a mobile computing device (10) to a remotely located data collection device (20). The system includes a synchronization device (38) that couples the mobile device to a digital telephone (40). The synchronization device operates to convert the data received from the mobile computing device into a format that can be transmitted by the digital telephone. In addition, the synchronization device transmits an identifier that specifies the data collection device to which the data shall be transmitted. The identifier is preferably read by a digital PBX and used to establish a communication path between the data collection device and the mobile computing device.
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: May 29, 2001
    Assignee: Siemens Information & Communication Networks, Inc.
    Inventors: William Joseph Beyda, Shmuel Shaffer
  • Patent number: 6236676
    Abstract: A system and apparatus for enabling modems having incompatible modulation methods to communicate with one another. The adaptive modulation system is adapted to enable a first communications device having a first modulation method to communicate with a second communications device having a second modulation method, even in those instances where the modulation methods are incompatible. The adaptive modulation system includes a communications device having a controller, a data pump and a data access arrangement/coder/decoder. The controller further includes an adaptive modulation unit having a decoder/interpreter, and a programmer. The decoder/interpreter in the adaptive modulation unit in the first communications device receives an incompatible modulation mode algorithm from the second communications device. The programmer receives the decoded modulation algorithm and programs the flash ROM with the new modulation method.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: May 22, 2001
    Assignee: Siemens Information and Communication Networks, Inc.
    Inventors: Shmuel Shaffer, William Joseph Beyda
  • Patent number: 6236642
    Abstract: A data routing system for dynamically optimizing bandwidth which includes a network control unit, a route comparator, a reroute control unit and a packet reordering unit. The network control unit reserves the initial route from the source node to the end node. The route comparator determines whether an alternate route is more optimal than the initial route and the reroute control unit establishes the alternate route and reroutes the data over the alternate route. The packet reordering unit maintains the sequence of the data packets on the alternate route.
    Type: Grant
    Filed: July 17, 1997
    Date of Patent: May 22, 2001
    Assignee: Siemens Information and Communication Networks, Inc.
    Inventors: Shmuel Shaffer, William J. Beyda
  • Patent number: 6226375
    Abstract: A communication system (70) for transmitting voice or data signals to a remote receiver detects a digital error message that is transmitted by a telephone service provider. A Caller_ID processor (80) detects and decodes the digital error messages that are transmitted on an analog telephone line. A central processing unit (180) detects and decodes the digital error messages that are transmitted on a signaling or D-channel of a digital telephone line. Once the received error messages are decoded, they are analyzed by the communication system for the appropriate action to take in order to complete a telephone call.
    Type: Grant
    Filed: July 16, 1997
    Date of Patent: May 1, 2001
    Assignee: Siemens Information and Communication Networks, Inc.
    Inventors: Shmuel Shaffer, William J. Beyda
  • Patent number: 6225917
    Abstract: A probe for measuring an electromagnetic field is described. A sensing element senses the electromagnetic field and generates a sensing signal indicative thereof. The sensing signal is characterized by a first modality. First conversion circuitry coupled to the sensing element converts the sensing signal to a second modality. A transmission medium coupled to the first conversion circuitry transmits the sensing signal in the second modality. Measurement circuitry coupled to the transmission medium receives the sensing signal in the second modality and generates measurement data corresponding to the electromagnetic field.
    Type: Grant
    Filed: March 11, 1998
    Date of Patent: May 1, 2001
    Assignee: Siemens Information and Communication Networks, Inc.
    Inventor: H. Stephen Berger
  • Patent number: 6226285
    Abstract: A method and system for delivering multimedia data to a user. The multimedia data is stored on a computer network which can consist of a private network or intranet or a public network like the Internet. The multimedia data to be delivered is typically stored in a combination of hypertext markup language (HTML) and audio file formats (WAV, MPEG, AU, etc.) and typically delivered using hypertext transfer protocol (HTTP). The multimedia data contains a visual portion of data such as text and graphics and an audio portion of data such as music. The visual portion of the data is delivered to the user's computer via a computer network. The audio portion of the data is delivered to the user's telephone via a telecommunications network.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: May 1, 2001
    Assignee: Siemens Information and Communication Networks, Inc.
    Inventors: Peter Kozdon, Eli Jacobi, Naser Shikhzadegan
  • Patent number: 6216003
    Abstract: In the method of handover control, when a mobile station recognizes that the mobile station has moved to an overlapping area, the mobile station notifies this fact to a network side and in response the network side sets up only a communication channel between a handover target base station and an exchange station for controlling that handover target base station, without setting up a radio channel between the handover target base station and the mobile station, while continuing the communication by not releasing the communication channel between the currently located base station and the exchange station and the radio channel between the currently located base station and the mobile station, so that it becomes possible to reduce a transmission control load for transmission between the base station and the exchange station as well as a control load for controlling the exchange station itself.
    Type: Grant
    Filed: June 2, 1998
    Date of Patent: April 10, 2001
    Assignee: NTT Mobile Communications Network Inc.
    Inventors: Takuya Hamajima, Takaaki Sato, Katsuhiko Yamagata, Takehiro Nakamura
  • Patent number: 6209195
    Abstract: A surface mount connector that can be used for both single and double-sided PWB's. A telephone may have a printed wiring board with connector access from the bottom of the telephone and keypad activation from the top of the telephone. If a double-sided PWB is used, the connector is mounted to the bottom side of the PWB, while the keypad is mounted to the top of the PWB. The connector faces away from the PWB to provide access from below the telephone. If a single-sided PWB is used, the connector is mounted to the top side of the PWB, so that the keypad can also be mounted to the top side. The connector is placed, with connector access down, into an opening through the PWB. The connector extends down through the opening in the PWB with the leads of the connector remaining on the top side of the PWB. The leads of the connector are secured to pads on the top side of the PWB.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: April 3, 2001
    Assignee: Siemens Information and Communication Networks, Inc.
    Inventors: Joel Adams, David Bryant, William Franklin Dunn, Jr., Doug Erwin, Mary E. Kingsbury, Klaus Krosen, Friedhelm Luettecke, Wayne McKinnon, William McRight
  • Patent number: 6208204
    Abstract: In the balance adjustment using a pilot signal in a distortion detector and a distortion canceller of a feed-forward amplifier for amplifying a CDMA transmission signal, a pilot code is spread by a long code different from that of the CDMA transmission signal to obtain the pilot signal. The pilot signal is converted to a signal of the transmission frequency band, and the converted signal is injected into the transmission signal at the input side of the amplifier. The pilot signal frequency band is detected from the output of an auxiliary amplifier of the distortion canceller and converted to the base band, thereafter being despread to detect the pilot signal (code).
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: March 27, 2001
    Assignee: NTT Mobile Communications Network, Inc.
    Inventors: Yasunori Suzuki, Toshio Nojima, Shoichi Narahashi
  • Patent number: 6208624
    Abstract: A paging scheme for a mobile communication system which is capable of suppressing the power consumption of the mobile station by reducing the intermittent ratio while keeping an average time required for the paging shorter than a case of merely increasing a number of time-slots. Each base station transmits a paging channel on which a paging signal for each mobile station is transmitted at intermittent timings, where the paging channel has a data transmission rate higher than a required paging channel rate of the mobile communication system, so as to shorten a transmission time of the paging signal for each mobile station. Then, each mobile station judges a presence or absence of the paging signal for that mobile station by receiving the paging channel at these intermittent timings. The paging channel may have a data transmission rate which is variable.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: March 27, 2001
    Assignee: NTT Mobile Communications Network Inc.
    Inventors: Motohiro Tanno, Takehiro Nakamura, Seizo Onoe
  • Patent number: 6205213
    Abstract: A system and method for communication information between origination equipment and destination equipment, in which switching signal information is received from a calling party telephone network. Additionally, information is also received from origination equipment for use by destination equipment for displaying calling party numbers. A display for use with the destination equipment receives the information from the calling party telephone network. From the plurality of information received, a first code from the calling party telephone network identifies calling party number information, and a second code from the calling party telephone network identifies partitioning and delineation information of the first code relating to a convention of parsing of telephone numbers associated with the calling party telephone network.
    Type: Grant
    Filed: December 16, 1998
    Date of Patent: March 20, 2001
    Assignee: Siemens Information and Communication Networks, Inc.
    Inventors: Dennis L. Kucmerowski, David A. Vander Meiden
  • Patent number: 6201534
    Abstract: A side-mounted cursor pointing device 108 for a wireless terminal 100 including a sliding cover 110. The sliding cover 110 slides over the cursor pointing device 108 in an off position. When the cover 110 is slid off the cursor pointing device 108, a biasing member 212 upon which the cursor pointing device 108 rests allows the cursor pointing device 108 to pop into position and allows the user to press down on the cursor pointing device 108 in order to make a selection. The sliding cover is preferably an on-off switch for the wireless terminal.
    Type: Grant
    Filed: October 3, 1997
    Date of Patent: March 13, 2001
    Assignee: Siemens Information and Communications Networks, Inc.
    Inventors: Ben Steele, Leopold Bömer, William Beyda
  • Patent number: 6202188
    Abstract: A data transmission device comprises a transmitter device and a receiver device. The transmitter device divides a data string to be transmitted into an original data string requiring protection against code error and a data string requiring no protection. The transmitter device then carries out an error detection code adding operation and error correction coding at a redundancy code rate of 1/N on the original data string to generate a coded data string. The transmitter device divides the coded data string by N, and outputs the N divided coded data strings and the data string requiring no protection on a communication line under a time division multiplexing control. The receiver device receives the N coded data strings and the data string requiring no protection.
    Type: Grant
    Filed: July 2, 1997
    Date of Patent: March 13, 2001
    Assignee: NTT Mobile Communication Network Inc.
    Inventors: Takashi Suzuki, Toshio Miki, Tomoyuki Ohya, Toshiro Kawahara, Satoru Adachi