Bizarre Patents
Mouse device with a built-in printer
A mouse device for use as an input device of a computer is provided that includes a housing in which recording paper is loadable, and a printer unit provided within the housing for printing on the recording paper print information received from the computer.
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| Number | Title | Issue Date |
| 5025442 | TDM/FDM communication system with pseudo-duplex capability A communication system that provides pseudo-duplex communications between communication units. A control slot is used to allow a receiving unit to transmit a request to interrupt, and to instruct a transmitting unit to interrupt its transmissions and to b... | 06/18/1991 |
| 5022050 | Serial data communication device A serial data communication device of a half-duplex communication system includes two communication units. One of the communication units has a counter for measuring a length of a remaining time during one sending/receiving period set for one-way data tra... | 06/04/1991 |
| 5020051 | Duplex communications method and system A method of establishing a digital time-division duplex radio communication link between one of a plurality of portable units and a base unit in a cordless telephone system, transmissions from the base unit are allowed only on a ping-pong basis with trans... | 05/28/1991 |
| 5007050 | Bidirectional digital serial interface for communication digital signals including digitized audio between microprocessor-based control and transceiver units of two-way radio communications equipment A digital serial interface system is provided for communicating digital signals including digitized audio between microprocessor-based Control and Transceiver Units of two-way radio communications equipment. The system of the invention essentially compris... | 04/09/1991 |
| 5001742 | Baseband signal processing unit and method of operating the same A baseband processing unit (10) for use in a cellular telephone cell site includes a digital signal processor (20) which serves to process forward voice signals intended for transmission to a mobile unit (12) as well as process the reverse voice signals r... | 03/19/1991 |
| 5001703 | Spectrally efficient TDM duplex communication system An improved duplex time division multiplexed (TDM) communication system is provided while conserving spectrum and efficiency. To accommodate two voice signals on one channel, the time allocated in a channel for brief listener voice acknowledgements is sho... | 03/19/1991 |
| 4970506 | Method and apparatus for controlling the start of data transmission In a method of controlling the start of data communication between two LSIs (master and slave) effecting a ping-pong transmission and the configuration of those LSIs, both the master and slave LSIs receive and detect a start instruction signal before star... | 11/13/1990 |
| 4949335 | A TDM quasi-duplex system An improved quasi-duplex time division multiplexed (TDM) communication system provides for transmission by a talker until an interrupt command for role reversal is transmitted by a listener. Preferably, the time allocated for voice transmission is greater... | 08/14/1990 |
| 4903257 | Digital two-way radio-communication system using single frequency A digital two-way radio communication system including first and second radio stations. Each radio station includes an antenna, a data transmission unit, a data reception unit, and a switching circuit. Both radio stations are radio-connected by a single f... | 02/20/1990 |
| 4839923 | Method and apparatus for time companding an analog signal A method and apparatus to compand an analog message to afford a two-to-one improvement in spectral efficiency, while contemporaneously minimizing distortion in the received signal. According to the invention, an analog message such as a voice message is d... | 06/13/1989 |
| 4817089 | Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels A system for the wireless transmission of multiple information signals utilizing digital time division circuits between a base station and a plurality of subscriber stations. The subscriber stations may be fixed or movable. The number of time division cir... | 03/28/1989 |
| 4815073 | Accessing of transmission channels of a communication system In a communications system with a plurality of subscriber stations independent of each other, where each subscriber station can access a joint duplex transmission channel according to a multiple access method, the probability of simultaneous attempts to g... | 03/21/1989 |
| 4811195 | Electronic control system with improved communications An electronic control system and an electronic control are disclosed. The electronic control system comprises a plurality of electronic controls communicating in a half-duplex mode. Each of the electronic controls has a computer with a store program and c... | 03/07/1989 |
| 4811394 | Variable starting state scrambling circuit PN sequence generators used in the scrambling and descrambling circuits at remote locations are periodically preset to the same value in order to maintain synchronism, with the preset value being also periodically changed. The preset value can be transmit... | 03/07/1989 |
| 4783780 | Method and apparatus for selecting a free channel in a mobile radio system In a mobile radio system, a method and apparatus for enabling a mobile station (M) to select a free duplex communication channel for communication with a fixed station (F). The fixed stations in the system detect duplex channels which are engaged in their... | 11/08/1988 |
| 4764939 | Cable system for digital information A cable system for supplying information contained in a plurality of parallel signals on a first set of plug contacts of a first plug at a modem, to a second set of plug contacts of a second plug at a CPU, a remote terminal or the like, without requiring ... | 08/16/1988 |
| 4754450 | TDM communication system for efficient spectrum utilization A time division multiplexed (TDM) communication system is disclosed, which apportions radio frequency communication channels into at least two time slots. Voice signals for transmission on this system are analyzed and vo-coded into a digital signal that i... | 06/28/1988 |
| 4748621 | TDMA/TDM interfacing An interface for connecting a station using a time division multiplex format to a time division multi-access system comprising (a) a first channel for converting time division multiplexed signals (112) into bursts (119), (b) a duplex channel for re-consti... | 05/31/1988 |
| 4742514 | Method and apparatus for controlling a TDM communication device A time division multiplexed (TDM) communication device controller is disclosed, which controls all signalling, synchronization and supervisory functions. In one embodiment, the invention operates to control a remote communication device having a vo-coder ... | 05/03/1988 |
| 4720827 | Optical communication set In an optical communication set a local transmission equipment, in which a call switch is previously pressed, becomes a master side. The local transmission equipment at the other side automatically becomes a slave side in response to a burst digital signa... | 01/19/1988 |
| 4707782 | Method for effecting one timer interrupt for multiple port communication A method for effecting full duplex communications through a plurality of ports of a processing apparatus having one timer. Each output and input signal is expressed as a plurality of bit time intervals. The timer is operated to establish cycles of duratio... | 11/17/1987 |
| 4644524 | Simultaneous communication system using time delays A communication system for simultaneous exchange of signals between first and second stations in which a timing signal of low frequency alternately switches a first station between receive and transmit with equal time periods and simultaneously switches a... | 02/17/1987 |
| 4630257 | Duplex speech transmission method and a system therefor A duplex speech transmission method is disclosed wherein a limited bandwidth transmission channel is divided in a plurality of successive time slots, alternate time slots being available for each of two parties to call in Speech signals from either of the... | 12/16/1986 |
| 4618932 | Control device for at least two circulating shelving systems In facilities having several systems of circulating shelving, because of the multiplicity of parts to be stored the regular use of a data processing system is required. For controlling the systems of circulating shelving by means of the data processing sy... | 10/21/1986 |
| 4525835 | Duplex radio system utilizing time compression expansion A multichannel duplex radio system for cordless telephone in which digital information is sent between the two ends. The data is divided into blocks which are transmitted in a fraction of the original block length. The other time slots are used for the du... | 06/25/1985 |
| 4510595 | Modified time-division transmission technique for digital mobile radio systems The present invention relates to a time-division radio transmission technique which uses a modified full-duplex arrangement where two channels are assigned to each two-way link. Simultaneous two-way transmission includes sequential digital symbol bursts b... | 04/09/1985 |
| 4499455 | Alarm circuit interface units Bidirectional communications between an alarm loop, comprising one or more alarm transmitters, and a remote receiver is provided through a digital transmission facility by a pair of interface units (201,301). Each interface unit, disposed at an end of the... | 02/12/1985 |
| 4484028 | Digital loop transceiver having a power up/down circuit In a digital telephone system, a digital private automatic branch exchange (PABX) has a plurality of digital line cards for coupling the PABX to respective digital subscriber sets via subscriber lines. In each digital line card, a digital loop transceiver... | 11/20/1984 |
| 4394760 | Process for monitoring analog and digital mobile radio connections A process for monitoring analog and digital mobile radio connections is disclosed within the framework of a mobile radio network comprising a number of radio base stations in a mutual spatial arrangement in the form of a cellular system having overlapping... | 07/19/1983 |
| 4287588 | Multiple access, time-division multiplex, satellite communications system A multiple-access, time-division multiplex, satellite communications system n which the uplink and downlink frequencies are the same. In each ground station, the outgoing information (be it data, encoded data or digitized samples of the voice frequency signals)... | 09/01/1981 |
| 4267592 | Anti-jam radio Disclosed is a method and apparatus for transceiving full duplex anti-jam radio signals in a burst of audio data on a carrier frequency that is pseudorandomly selected.... | 05/12/1981 |
| 4239934 | Means and an apparatus for synchronizing an orthogonal diphase code receiver Orthogonal-diphase coded digital signals are transferred in bursts on a transmission line. In order to facilitate synchronization of the signal receiver to the incoming signal bursts an extra pulse is added at the beginning of each transmitted burst, the ... | 12/16/1980 |
| 4159448 | Communication systems A pulse modulation system in which both ends of the pulses of a train can be modulated in time relative to time marker signals, permits establishment of a four-channel, time division, duplex communication system on a single radio frequency carrier. The mo... | 06/26/1979 |
| 4145657 | Radio transmission system for two subscribers to have a mutual connection on one of several frequency channels and having time multiplex interlace of preferred channels A radio transmission system in which two subscribers use only one of possibly several frequency channels for a mutual connection is characterized in that in the individual frequency channel which is provided for the connection of the two subscribers the i... | 03/20/1979 |
| 4129749 | Radio telephone communications system A radio telephone system comprising a base station and a plurality of portable units. The base station transmits information to portable units on a first frequency and the portable units transmit information to the base station on a second frequency. Each... | 12/12/1978 |
| 4112252 | Multi-terminal serially communicating shared logic text editing system A text editing system is provided in which a central station communicates a video signal, timing signals, and control signal to a remote station by way of a single communication pathway for subsequent display on a cathode ray tube at the remote station an... | 09/05/1978 |
| 4086429 | Synchronizing system for use in telecommunication A synchronizing circuit for use in time division simultaneous telecommunication for attaining synchronized alternate transmission and reception of aural signal between a calling station and a called station at a predetermined rate of time division. The sy... | 04/25/1978 |
| 4062016 | Simultaneous telecommunication between radio stations A radio communication system for simultaneous telecommunication between a calling station and a called station using a carrier of single frequency for carrying audio information, in which a time division pulse signal within the audio frequency range is ge... | 12/06/1977 |
| 4037158 | Two-way FM radio system operating on a single channel and providing simulated duplex operation A two-way FM radio transmitter-receiver operates on a single channel and automatically samples the channel during transmissions to sense the presence of a carrier wave. The transmitter is actuated by use of a transmit key which starts timing means to prod... | 07/19/1977 |
| 4034295 | Radio communication system for simultaneous telecommunication between radio stations A radio communication system for simultaneous telecommunication between a calling station and a called station, in which an aural signal to be transmitted from the calling station is divided by sampling pulses in the form of clock pulses of low frequency ... | 07/05/1977 |
