| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 1 | JPS6366107B2 - | JP20901982 | 1982-11-29 | JPS6366107B2 | 1988-12-19 | WATANABE KYOJI |
| 2 | Transmission and reception system | JP13120483 | 1983-07-18 | JPS6022832A | 1985-02-05 | NAGAMOTO SHIYUNICHI; UEKI KOUICHI; SHIRASAWA TADANORI |
| PURPOSE:To simplify the circuit and to attain less need of adjustment in a carrier generating circuit by providing a switching circuit turning on/off a data signal outputted from a microcomputer to a transceiver and plural remote controllers. CONSTITUTION:A carrier signal is transmitted always among the transceiver 1 and the remote controllers 2a, 2b and 2c by the carrier generating circuit 6 of the transceiver 1. When the level of a data signal outputted from the microcomputer 4 is at H level, a transistor (TR)21 is turned on and no carrier signal is fed to the remote controllers 2a, 2b and 2c. On the other hand, when the level of the data signal outputted from the microcomputer 4 is at L, the TR21 is turned off and the carrier signal is transmitted to the remote controllers 2a, 2b and 2c. In case of the transmission of the signal from the remote controller 2a conversely, a TR23 is turned on/off by a signal outputted from a microcomputer 16 similarly as above and the signal is transmitted. Thus, the circuit constitution is made simple and only one portion of adjustment is required for the carrier generating circuit. | ||||||
| 3 | Radiotelephony using intermittent electric wave | JP4665975 | 1975-04-16 | JPS51121206A | 1976-10-23 | OGURA RIICHI |
| PURPOSE:Radiotelephony using narrow band width. | ||||||
| 4 | Transmission system for telephone communication or data transfer | EP88121664.2 | 1988-12-24 | EP0324975A2 | 1989-07-26 | Myllymäki, Matti |
The invention concerns a transmission system for telephone communications comprising at least two telephone sets, each incorporating a microphone (9) and a receiver and/or loudspeaker, a telephone line connecting the telephone sets by at least two conductors in order to form a current loop. Connected to the current loop is an alternating-current generator (2) and current-steering switch elements (11), arranged to steer the current to be routed during the positive half-cycles generated by the generator via the microphone circuit (9) of the first set and the receiver and/or loudspeaker circuit (10′) of the second set as well as to steer the current during the negative half-cycles via the receiver and/or loudspeaker circuit (10′) of the first set and the microphone circuit (9) of the second set, whereby voice transmission takes place by sampling the microphone signals of the inter-connected telephone sets and transmitting the alternate signal samples superimposed on the generator signal so that the microphone signal of the first set is superimposed on the positive half-cycles of the generator signal while the microphone signal of the second set is superimposed on the negative half-cycles of the generator signal. The invention is also applicable to data transmission, wherein the telephone sets are replaced by modems of a simple construction. |
||||||
| 5 | Burst signal transmission system | EP83111906.0 | 1983-11-28 | EP0110368B1 | 1987-03-04 | Watanabe, Kyoji |
| 6 | Method of transmitting information according to which the signals are coded by the amplitude size of the half waves or the periods of a sinusoidally shaped alternating current | EP83112239 | 1983-12-06 | EP0110427A3 | 1985-12-04 | Dirr, Josef |
| 7 | Burst signal transmission system | EP83111906 | 1983-11-28 | EP0110368A3 | 1984-10-03 | Watanabe, Kyoji |
A signal control circuit for a burst signal transmission system has a comparator for receiving a burst control signal from a burst control signal generator and an output signal from an envelope detector and for generating a difference signal therebetween. The difference signal is supplied to an attenuator, a preamplifier or a nonlinear power amplifier for receiving a modulated carrier wave so as to control attenuation of the attenuator or gain of the preamplifier or nonlinear power amplifier whereby a waveform of the output signal from the nonlinear amplifier is made analogous to that of the burst control signal from the burst control signal generator. |
||||||
| 8 | Communication system on telephone talk or information transmission | JP1094189 | 1989-01-18 | JPH01245662A | 1989-09-29 | MATSUCHI MIRIIMAKI |
| PURPOSE: To simplify the circuit of analog and digital telephones by connecting a current controller between a current loop, and a microphone circuit of a telephone and a receiver circuit so as to allow current to flow in only a single direction of a current loop. CONSTITUTION: An alternating current generator 2 which generates a square wave supplies a sampling frequency on distribution, an exchanging device controls switches 3 and 4, and on the other hand, a band filter 5 of a telephone controls switches 6 and 7. About an input transmitting talk direction from the exchange device to the telephone, a positive half cycle of a sampling frequency switches an output transmitting signal amplifier of the exchanging device and an input supplying signal amplifier of the telephone to the distribution side. For an input supplying talk direction from the telephone to the exchanging device, a negative half cycle of the sampling frequency is used in the same manner where a talk signal sample is transmitted. Thus, voice transmission is carried out by transmitting alternate signal samples which are overlapped on a signal of the generator. COPYRIGHT: (C)1989,JPO | ||||||
| 9 | JPS59502169A - | JP50042084 | 1983-11-21 | JPS59502169A | 1984-12-27 | |
| 10 | Signal control circuit | JP20901982 | 1982-11-29 | JPS5999851A | 1984-06-08 | WATANABE KIYOUJI |
| PURPOSE: To attain large power of a communication system by preventing unnecessary spread of a spectrum of a carrier under the burst switching to an output waveform of a nonlinear amplifier of a radio device of the phase shift modulating system so as to provide an excellent characteristics to the spectrum. CONSTITUTION: A burst carrier signal of rectangular wave is inputted to an input terminal 6 and a burst control signal is outputted from a control signal generating circuit 3 at the same time. The carrier signal from the terminal 6 is amplified by a preamplifier 1 and inputted to a class C amplifier 2. A part of the carrier signal outputted to an output terminal 7 from the amplifier 2 is applied to an envelope deteting circuit 5 to detect the envelope of the output signal. The output of the detecting circuit 5 and the control signal from the circuit 3 are compared by a comparator 4 to output an error signal. The error signal controls the gain of the amplifier 1 to make the output waveform of the amplifier 2 similar to that of the control signal from the circuit 3 so as to provide the excellent characteristics to the spectrum, allowing to attain large power to the communication system. COPYRIGHT: (C)1984,JPO&Japio | ||||||
| 11 | 변조레벨 및 비트율 결정 방법 | KR1020140075661 | 2014-06-20 | KR1020140098718A | 2014-08-08 | 김기원; 경종민 |
| The present invention relates to a method to determine a modulation level and a bit rate and, more specifically, to a method to acquire and encode image information to store in a memory and determine a modulation level and a bit rate for the image information by a device which transmits the image information to the other devices. The prevent invention has the effects of satisfying the encoding distortion levels and time limit of the transmission mode or an operation of a transmitter to determine a modulation level and a bit rate; and achieve a minimum energy consumption. | ||||||
| 12 | 마스킹 효과를 고려한 음파 통신 시스템 및 방법, 그리고 이에 적용되는 장치 | KR1020100111522 | 2010-11-10 | KR1020120050155A | 2012-05-18 | 김문기; 김동건; 유재황; 김민석; 김남수; 윤환식; 조기호 |
| PURPOSE: A sound wave communication system and a method thereof are provided to minimize errors for detecting information within a sound source of audio content due to masking effect. CONSTITUTION: A transmission unit(100) generates a modulation audio signal which amplitude size is controlled based on a masking threshold value. The transmission unit determines sound variation of the audio signal. The transmission unit re-controls amplitude of a signal band. A reception unit(200) receives an output audio signal. The reception unit outputs information data of the output audio signal. | ||||||
| 13 | TRANSPOSITIONAL MODULATION | US15880766 | 2018-01-26 | US20180302263A1 | 2018-10-18 | Harvey C. Woodsum; Richard C. Gerdes |
| Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for modulating and demodulating transpositional modulated (TM) signals. One aspect features a method of modulating a carrier signal that include the actions of generating a TM signal by generating a sinusoidal signal, and modulating the sinusoidal signal based on a data signal to provide the TM signal. Inserting the TM signal into a carrier signal to provide a TM modulated carrier signal. Modulating the TM modulated carrier signal with a non-TM signal to provide a combined signal. Transmitting the combined signal. | ||||||
| 14 | Adaptive Symbol Mapping | US15670142 | 2017-08-07 | US20170338898A1 | 2017-11-23 | Nadav Fine; Ran Soffer |
| The continuous demand for capacity and the limited available spectrum in wireless and wired communication has led to reliance on advanced modulation techniques to dramatically increase the number of bits per hertz per second. This demand in capacity and using the higher order constellations shorten the link range, and as a result, system gain becomes an important characteristic. The modulation techniques described here improve the system gain by, e.g., as much as 2.5 dB in high order modulations such as 4096-QAM. The modulation techniques include reducing the peak to average ratio and adding shaping gain. These techniques dramatically improve the system capacity, system gain, power consumption and system cost. | ||||||
| 15 | Adaptive Symbol Mapping Modulation | US15670137 | 2017-08-07 | US20170338897A1 | 2017-11-23 | Nadav Fine; Ran Soffer |
| The continuous demand for capacity and the limited available spectrum in wireless and wired communication has led to reliance on advanced modulation techniques to dramatically increase the number of bits per hertz per second. This demand in capacity and using the higher order constellations shorten the link range, and as a result, system gain becomes an important characteristic. The modulation techniques described here improve the system gain by, e.g., as much as 2.5 dB in high order modulations such as 4096-QAM. The modulation techniques include reducing the peak to average ratio and adding shaping gain. These techniques dramatically improve the system capacity, system gain, power consumption and system cost. | ||||||
| 16 | OPTICAL COMMUNICATION INTERFACE UTILIZING N-DIMENSIONAL DOUBLE SQUARE QUADRATURE AMPLITUDE MODULATION | US15170843 | 2016-06-01 | US20160277113A1 | 2016-09-22 | Jamal RIANI; Sudeep BHOJA |
| The present invention is directed to data communication system and methods. More specifically, various embodiments of the present invention provide a communication interface that is configured to transfer data at high bandwidth using nDSQ format(s) over optical communication networks. In certain embodiments, the communication interface is used by various devices, such as spine switches and leaf switches, within a spine-leaf network architecture, which allows large amount of data to be shared among servers. | ||||||
| 17 | Optical communication interface utilizing n-dimensional double square quadrature amplitude modulation | US14511087 | 2014-10-09 | US09020083B2 | 2015-04-28 | Jamal Riani; Sudeep Bhoja |
| The present invention is directed to data communication system and methods. More specifically, various embodiments of the present invention provide a communication interface that is configured to transfer data at high bandwidth using nDSQ format(s) over optical communication networks. In certain embodiments, the communication interface is used by various devices, such as spine switches and leaf switches, within a spine-leaf network architecture, which allows large amount of data to be shared among servers. | ||||||
| 18 | OPTICAL COMMUNICATION INTERFACE UTILIZING N-DIMENSIONAL DOUBLE SQUARE QUADRATURE AMPLITUDE MODULATION | US14511087 | 2014-10-09 | US20150023452A1 | 2015-01-22 | Jamal RIANI; Sudeep BHOJA |
| The present invention is directed to data communication system and methods. More specifically, various embodiments of the present invention provide a communication interface that is configured to transfer data at high bandwidth using nDSQ format(s) over optical communication networks. In certain embodiments, the communication interface is used by various devices, such as spine switches and leaf switches, within a spine-leaf network architecture, which allows large amount of data to be shared among servers. | ||||||
| 19 | SWITCHED-LOAD RESONATING TRANSMITTER FOR PASSBAND POWER LINE COMMUNICATION | US13696486 | 2011-05-05 | US20130208830A1 | 2013-08-15 | David W. Rieken |
| A switched-load, resonant transmitter (T2) for inbound signaling in a two-way automatic communications system (TWACS). The load is purely reactive containing both inductive (L) and capacitive (C) elements. When connected in a power transmission network, the transmitter generates signals useful for passband communications. The transmitter consumes, on average, 100 times less power than resistive switched-load transmitters currently in use in TWACS networks. Signal strength is comparable to that produced by the transmitters currently in use at frequencies near 1 kHz, but is very low otherwise. | ||||||
| 20 | Guard tone capture method | US448457 | 1982-12-10 | US4554542A | 1985-11-19 | Arman V. Dolikian |
| A decoder for receiving and decoding a coded signal includes a particular frequency f.sub.o with a first and second amplitude. The first amplitude of the frequency f.sub.o is associated with the end of a first coded message while the second amplitude of the frequency f.sub.o is associated with the beginning of a second coded message. The decoder includes a receiver for receiving the coded signal, a tone detector circuit for detecting the frequency f.sub.o, a level sensor responsive to the receiver output, a function block for performing a command and a control unit responsive to the tone detector circuit and the sensor means. The tone detector and control unit operate in one of at least two possible states. In the first state the control unit causes the tone detector to respond to the first amplitude of the frequency f.sub.o. When the level sensor senses the second amplitude of the frequency f.sub.o the control unit responds by placing the tone detector circuit into its second state. In its second state, the tone detector circuit detects whether the level sensor was tripped by the frequency f.sub.o or by some other frequency. If the tone detector circuit detects the frequency f.sub.o, the control unit causes the decoder to end its decoding of the first message and begin the decoding of a second message. If the tone detector circuit in its second state fails to detect the frequency f.sub.o, the control unit returns the tone detector circuit to its first state so it may continue to decode the first amplitude of the frequency f.sub.o associated with the first coded message. | ||||||
QQ群二维码
意见反馈
意见反馈