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JPH0884128A |
PURPOSE: To evade a competitive access at the time of complementing a line by allocating a control band to each subscriber. CONSTITUTION: A master-slave communicating band and a master-slave controlling bands are formed in a frequency ba...
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JPH08501675A |
The availability and location of a multiplicity of multiplexed digital information streams, transmitted over one of a multiplicity of channels, are identified by transmitting a Global Channel Map which includes a version number, one Band...
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JPH0823318A |
PURPOSE: To obtain data transmission with less transmission delay by using one kind of block identification code and one kind of block code for the transmission of data. CONSTITUTION: Input data are divided into the unit of 22 bytes at a...
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JPH07327006A |
PURPOSE: To improve the data transmission efficiency and to prevent the throughput and the system efficiency from being reduced without accompanying complicated configuration of a communication equipment with respect to the increase in n...
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JPH07307716A |
PURPOSE: To provide a circuit for realizing frequency hopping in a time-division multiple access system. CONSTITUTION: A microprocessor 21 decides a frequency to be transmitted and received in a specific multi-address communication frame...
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JPH07303090A |
PURPOSE: To provide a system and a method for optimizing the usage of a communications transmission media. CONSTITUTION: In order to generate time-frequency slices to be assigned to various access rates and user's application requirement...
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JPH07101865B2 |
A frequency setting system for a radio transmission apparatus of the type transmitting a signal in the form of bursts and changing transmission frequency burst by burst. A frequency division data generator (30) feeds both a frequency div...
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JPH0799815B2 |
PURPOSE:To make a terminal station to always be subordinate to a nearby repeater station whose reception level is the highest by sequentially comparing the reception levels of transmission synchronizing signals from the respective repeat...
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JPH07221738A |
PURPOSE: To provide a method for transmitting and switching packets in an optical communication network by which synchronized time division multiplexing can be realized. CONSTITUTION: Packets C1, C2, C3, and C4 are transmitted at a presc...
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JPH07212342A |
PURPOSE: To reduce the spurious waves generated by the switching of a local oscillator. CONSTITUTION: In the transmission circuit of a radio telephone system performing communication by a time division, an attenuator 5 where the attenuat...
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JPH07506711A |
A method and apparatus are provided for use in a multi-channel digital transmitter and receiver. A filtering process is accomplished by conditioning portions of a digitized signal during digital signal processing by integrating, taking t...
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JPH07162940A |
PURPOSE: To stably continue communication without receiving interference from another radio system by dividing frame time longer than carrier sense time into short sub frame times. CONSTITUTION: Data for communication are transmitted in ...
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JPH0752867B2 |
In multi-channel PCM music broadcasting system, a plurality of blocks are time division multiplexed, each block having at least one music channel for a PCM formatted music signal and having an independent operation mode information. The ...
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JPH0752866B2 |
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JPH0744512B2 |
In a space-division multiplex communication method of executing multiplex communication according to this invention, a plurality of radio beams a-a' to d-d' radiated at same frequency in different directions and rotated at same rotationa...
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JPH07111482A |
PURPOSE: To attain frequency stabilization quickly after channel changeover by applying automatic frequency control with other frequency and storing the result for a period when a required signal is not received. CONSTITUTION: A signal i...
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JPH0728273B2 |
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JPH0766798A |
PURPOSE: To make it possible to separate a sub-information signal even at the time of optionally changing a set speed by a main station in a system consisting of the main station having a function capable of setting up plural kinds of sp...
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JPH0722277B2 |
A method and apparatus for use in a digital radio transmission system comprising stationary radio stations arranged in a cellular network and to which are assigned a plurality of mobile radio stations. Transmission of digital messages fr...
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JPH06326683A |
PURPOSE: To eliminate the need of receiving burst number informing signals and level measurement timing signals from a terminal equipment and to reduce the number of signal lines between the terminal equipment and an automatic level cont...
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JPH06284107A |
PURPOSE: To provide a simultaneous transmission reception communication method and to realize a method as the simultaneous transmission reception communication equipment at a low cost in which the increase in a speech frequency band due ...
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JPH06232836A |
PURPOSE: To simplify the configuration of a hardware and further to suppress carrier frequencies to one frequency by constituting the plural filter groups of a MODEM with transform multiplexer(TMUX) or transform demultiplexer(TDMUX). CON...
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JPH06216871A |
PURPOSE: To execute digital branching and insertion simply at a low cost by using an audio in-band signal of each channel as a branch signal used to identify branching. CONSTITUTION: A changeover section 13 allocates digital transmission...
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JPH0659045B2 |
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JPH06504413A |
(57) [Summary] Since this publication is application data before electronic filing, summary data is not recorded.
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JPH0616612B2 |
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JPH0653937A |
PURPOSE: To simultaneously attain a digital transmission and an analog transmission by superimposing a digital modulated signal transmitted in the same frequency band on an FM modulated signal of an arbitrary transmission level. CONSTITU...
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JPH05504876A |
PCT No. PCT/EP91/01847 Sec. 371 Date May 27, 1992 Sec. 102(e) Date May 27, 1992 PCT Filed Sep. 25, 1991 PCT Pub. No. WO92/06545 PCT Pub. Date Apr. 16, 1992.A device in which the frequency band (W) of a multiple carrier signal (MCS) is di...
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JPH05136717A |
PURPOSE: To improve the TDMA frame utilizing efficiency by allowing a center station to receive a reference burst(RB) once for several frames and receiving a line connection element burst (CSC) from other frames. CONSTITUTION: The system...
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JPH0517731B2 |
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JPH04357727A |
PURPOSE: To realize a signal transmission/reception system by a CATV line in which massive information is easily sent. CONSTITUTION: A time division multiplexer 1 multiplexes input digital signals of lots of channels into time division m...
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JPH04506729A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPH0439813B2 |
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JPH0315796B2 |
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JPH0334645A |
PURPOSE: To use this system by combining time-division multiplexing with frequency division multiplexing by communicating burst information in a partial response configuration with zero energy in response to a zero value input, and recei...
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JPH02276323A |
PURPOSE: To evade the raising of a bit rate and to prevent the activity efficiency of a radio frequency from being lowered by performing line switching by effectively utilizing a space diversity receiver. CONSTITUTION: The switching of a...
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JPH02276325A |
PURPOSE: To execute line switching without cutting off the output signal of a channel in current use by deciding the presence/absence of a null channel with out generating the deterioration of quality by switching the frequency of the lo...
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JPH02210925A |
PURPOSE: To carry a voice, data, and video channel, and to simultaneously transmit a basic digital signal and a multiple microwave carrier wave/sub-carrier wave by providing a means for generating a light beam and a means for intensely m...
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JPH02122736A |
PURPOSE: To construct a system with high availability of frequency by dividing one radio channel into plural time slot systems in point of time, and performing communication by selecting one or plural time slot systems. CONSTITUTION: One...
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JPH02104042A |
PURPOSE: To attain the communication of a central station to lots of terminal stations within a prescribed time by raising a carrier having the 2nd frequency when the terminal station receives a transmission signal from the central stati...
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JPH0216069B2 |
A method for digital frequency conversion of audio signals or PCM signals into signals of a frequency-division multiplex system in which the original signals exist in a channel of limited band width. All channels are brought into their d...
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JPH0233236A |
PURPOSE: To attain effective utilization of a radio channel by selecting a time unit receptible of multiple address communication and selecting the time units in the order of maximizing receptible slave station number from the selected t...
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JPH024179B2 |
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JPH02904B2 |
A multiplex system has an inverse Fourier transformer that is unequal to its forward one, therefore an optimum distribution of elements is possible.
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JPH0151103B2 |
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JPH01268321A |
PURPOSE: To simultaneously use two or more terminal equipments in one earth station by providing a first modulating circuit for executing a modulation output by changing a transmission frequency band, and a second demodulating circuit fo...
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JPH01208042A |
PURPOSE: To obtain compact constitution suitable for a communication satellite by performing the frequency control of a local oscillator in a period multiplied by integer times the time slot in case of transmitting a signal to a time-div...
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JPH01200841A |
PURPOSE: To lower a loss probability and to set a communication line with a high using efficiency by switching the oscillation frequency of a frequency variable type frequency oscillation when the number of oscillators which one transmit...
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JPH01194621A |
PURPOSE:To decrease a circuit size by constituting a converting circuit which consists of a nonlinear/linear converting circuit, a monitor signal generating circuit and an inserting circuit with special reading elements. CONSTITUTION:In ...
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JPH01181344A |
PURPOSE:To miniaturize the transmitter of a peripheral station by devising the peripheral station such that the station transmitting a data signal and a voice signal in parallel simultaneously processes the voice signal into a burst sign...
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