子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 61 | MULTIPLEXED PULSE MODULATION USING SUPERPOSITION | US14002198 | 2012-01-10 | US20130336659A1 | 2013-12-19 | Partha S. Dutta; Sruthi Muralidharan |
| The present invention relates to an optical transmitter for transmitting data. The optical transmitter includes a pulse generator for generating N data streams overlapping in time from a de-multiplexed data source. Each respective data stream has pulses with shapes unique to that respective data stream. The transmitter also includes an optical source optically transmitting an output pulse that is generated by summing the uniquely shaped pulses from each respective data stream that are overlapping in time. Each output pulse represents N bits of the data source, where N>1. | ||||||
| 62 | METHOD FOR SYNCHRONIZING SENSORS | US13703979 | 2011-06-15 | US20130173200A1 | 2013-07-04 | Wolfgang Jöckel; Otmar Simon |
| The invention relates to a method for synchronizing sensors in a sensor array, including at least one electronic control unit and at least one sensor, which are connected to each other by a first and a second line, wherein the sensor is supplied with electric power by the first and second lines, and additionally at least one data signal (a) is transmitted by the first and second lines from the sensor to the electronic control unit, wherein the electronic control unit transmits a defined supply voltage signal having varying polarity as a synchronization signal (b, c) to the sensor, whereupon the sensor transmits at least one data signal (a) to the electronic control unit, after the polarity of the synchronization signal has been reversed. | ||||||
| 63 | SIGNAL AND DEVICES FOR WIRED NETWORKS | US12863815 | 2009-02-11 | US20110019748A1 | 2011-01-27 | Danny Burns; Steve Farmer |
| A signal for use on a wired network interconnecting electronic devices, comprising: a base voltage for conveying power to the electronic devices; a pulsed voltage signal bearing coded information for transfer between the electronic devices; and a digital signal superimposed onto selected portions of the pulsed voltage signal, wherein the digital signal comprises a carrier signal modulated by a data signal for transfer between the electronic devices. This is used in fire alarm networks, for example, to convey multimedia or other data such as control signals, whilst maintaining compatibility with existing protocols using the pulsed voltage signal. | ||||||
| 64 | Pulse density modulator | US09264244 | 1999-03-08 | US06317457B1 | 2001-11-13 | Tetsuya Naruse; Satoshi Konya |
| A pulse density modulator for performing a modulation process by changing a pulse density per unit time. The pulse density modulator includes a counting circuit for counting supplied clock signals, a first waveform data generating circuit for synthesizing count data outputted from the counting circuit to generate basic waveform data, a second waveform data generating circuit for synthesizing the basic waveform data outputted from the first waveform data generating circuit to generate pulse density modulated waveform data corresponding to digital data supplied externally, a clock correction signal generating circuit for generating a clock correction signal indicating the phase of an unequal cycle component included in the clock signals, and a waveform data correcting circuit for correcting the pulse density modulated waveform data based on the clock correction signal. Since the waveform data correcting circuit is provided for correcting the pulse density modulated waveform data based on the clock correction signal indicating the phase of the unequal cycle component included in the clock signal, the linearity can be achieved between the corrected pulse density modulated waveform data and its direct current component only by adding the waveform data correcting circuit. | ||||||
| 65 | Digital attenuator | US3752970D | 1971-12-22 | US3752970A | 1973-08-14 | AARON M; KANEKO H |
| Attenuation is performed directly on a compressed PCM code by means of a circuit which treats the characteristic bits and the mantissa bits in accordance with an attenuation algorithm. The characteristic bits are applied to a counter circuit whose output is used to produce a first term of the algorithm and the mantissa bits are applied to a shift register whose output is used to generate a second term of the algorithm. The two terms are added together and used to generate the characteristic bits of the attenuated signal.
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| 66 | Phase shift data transmission systems having auxiliary channels | US3603882D | 1969-04-16 | US3603882A | 1971-09-07 | WILSON BERNARD |
| In a data transmission system utilizing phase shift modulation of a carrier signal to transmit pulse coded data from one station to another an auxiliary low frequency signal is transmitted between said stations by frequency modulation of the carrier signal, the maximum phase shift of the carrier signal due to said frequency modulation during any one pulse interval of the data signals being much less than the minimum step phase shift utilized in transmitting said data.
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| 67 | Method and apparatus for the additional transmission of communications over lines | US3504118D | 1966-08-19 | US3504118A | 1970-03-31 | CHRISTIANSEN HANS-MARTIN |
| 68 | Time division multiplex system with prearranged carrier frequency shifts | US3471646D | 1965-02-08 | US3471646A | 1969-10-07 | MAGNUSKY HENRY; STEEL FRANCIS R JR |
| 69 | Method and system for communication of information utilizing pulse compression principles | US3469189D | 1966-04-01 | US3469189A | 1969-09-23 | MILLER PARK H JR |
| 70 | Four-wire/two-wire converter | US39679964 | 1964-09-08 | US3267218A | 1966-08-16 | ADELAAR HANS HELMUTH |
| 71 | Signal processing system and method | US3991560 | 1960-06-30 | US3256389A | 1966-06-14 | EHRICH WILLIAM G |
| 72 | Laser pulse communication system | US27351863 | 1963-04-16 | US3243592A | 1966-03-29 | KIYO TOMIYASU; WHITTEN JAMES R |
| 73 | Phaseproof pulse signal transmission system utilizing binary to quaternary conversion means | US84554859 | 1959-10-09 | US3183442A | 1965-05-11 | FILIPOWSKY RICHARD F J |
| 74 | Pulse modulation communication system | US19573162 | 1962-05-18 | US3176225A | 1965-03-30 | RANSOM JAMES R; OLMSTEAD MERLIN E |
| 75 | Pulse communication system | US6123960 | 1960-10-07 | US3134855A | 1964-05-26 | CHASEK NORMAN E |
| 76 | Mixed base code generation | US75082858 | 1958-07-24 | US3132334A | 1964-05-05 | WILLIAMS RICHARD E |
| 77 | Variable pitch propeller | US25138063 | 1963-01-14 | US3116794A | 1964-01-07 | WALKER HARRY M; BECK CARL E |
| 78 | Pulse code modulation transmission | US65648546 | 1946-03-22 | US3075147A | 1963-01-22 | LLEWELLYN FREDERICK B |
| 79 | Simultaneous pam-pdm multiplexer | US8593861 | 1961-01-30 | US3037169A | 1962-05-29 | BISHOP BRUCE E |
| 80 | Electric signal communication systems | US26007351 | 1951-12-05 | US2871290A | 1959-01-27 | WILLIAM EARP CHARLES |
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