1
Lawrence H Zuckerman: Apparatus and method for receiving a modulated radio frequency signal by converting the radio frequency signal to a very low intermediate frequency signal. Advanced Micro Devices, Foley & Lardner, September 1, 1998: US05802463 (168 worldwide citation)

A very low intermediate frequency (IF) transceiver is described for use in a wireless LAN, cellular telephone, cordless telephone, and other radio transceiver applications. The transceiver preferably directly down-converts the RF signal to lower frequency such as a very low IF signal, which can be h ...


2
Richard E Nichols, Hans Scharla Nielsen, Dale H Delaruelle, Dennis B Dahlman: Railroad communication system. Harris Corporation, Antonelli Terry & Wands, April 15, 1986: US04582280 (113 worldwide citation)

A radio communication control system for a lead unit and a plurality of remote units is disclosed. The system has a protocol for establishing a communication link between the lead unit and the one or more remote units in the system which prevents any of the units in that system from processing messa ...


3
Mutsumi Kojima, Toshio Masaki: Communication control system using an asynchronous transfer mode network. Kabushiki Kaisha Toshiba, Oblon Spivak McClelland Maier & Neustadt, January 18, 1994: US05280476 (98 worldwide citation)

A communication control system using an ATM network and constructed by a small number of virtual connections. Fixed or semi-fixed virtual connection connect each user interface and a corresponding connectionless service processor and interconnect the connectionless service processors. A data packet ...


4
Takanori Utano, Masayuki Sakamoto, Yoshikazu Takayama: Mobile radio communication control system for preventing erroneous reception of control signals. Nippon Telegraph and Telephone Public Corporation, Nippon Electric, Sughrue Rothwell Mion Zinn and Macpeak, March 13, 1979: US04144409 (64 worldwide citation)

A mobile radio communication system utilizes message channels of the same frequencies in separate geographic zones. Also, zones utilizing the same message channels are assigned distinguishing control codes which are transmitted with control signals to prevent control signals related to one zone from ...


5
Richard E Nichols, Dale H Delaruelle: Railroad air brake system. Harris Corporation, Antonelli Terry & Wands, November 19, 1985: US04553723 (58 worldwide citation)

A radio communication control system for a lead unit and a plurality of remote units is disclosed. The system has a protocol for establishing a communication link between the lead unit and the one or more remote units in the system which prevents any of the units in that system from processing messa ...


6
Richard E Nichols, Hans Scharla Nielsen, Dale H Delaruelle, Dennis B Dahlman: Railroad communication system. Harris Corporation, Evenson Wands Edwards Lenahan & McKeown, August 13, 1991: US05039038 (57 worldwide citation)

A radio communication control system for a lead unit and a plurality of remote units is disclosed. The system has a protocol for establishing a communication link between the lead unit and the one or more remote units in the system which prevents any of the units in that system from processing messa ...


7
Makoto Tsuji, Yuichi Saito: Facsimile communication control system. Ricoh Company, David G Alexander, April 15, 1986: US04583124 (52 worldwide citation)

A facsimile communication control system for setting up a modem rate appropriate for a remote receiving station within a short period of time. A modem rate used for communication last time is stored in a nonvolatile memory so that a modem training at the time of the next communication begins with th ...


8
Takeshi Horie, Morio Ikesaka, Hiroaki Ishihata: System for controlling communication between parallel computers. Fujitsu, Staas & Halsey, October 20, 1992: US05157692 (51 worldwide citation)

A communication control system controls communication between parallel computers using a wormhole routing. The system comprises units for connecting a plurality of computer nodes by relay channels within a network to continuously transfer a message divided into a plurality of minimum data units for ...


9
Yoshihiro Naruse, Hideharu Kato, Yoshifumi Iwata: Secure communication control system. Aisin Seiki Kabushiki Kaisha, Sughrue Mion Zinn Macpeak & Seas, January 15, 1991: US04985919 (48 worldwide citation)

Encoder/decoders are associated with conventional local and far-end communications equipment such as facsimile machines. Information to be faxed is encoded at one end, transmitted to the other end, and decoded, without affecting normal communications protocol or requiring other specialized equipment ...


10
Yoshihisa Sato, Yuji Hirabayashi, Susumu Akiyama, Katsunori Ito, Takao Saito: Communication control system. Nippondenso, Toyota Jidosha Kabushiki Kaisha, Cushman Darby & Cushman, September 5, 1989: US04864568 (44 worldwide citation)

Control units are mutually connected by separate common signal lines. A data link is provided between the control units via a preselected one of the common signal lines. A check is made as to whether the preselected common signal line is operating normally or abnormally. When the preselected common ...



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