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1. 发明授权

US10461801B2 Using harmonics for fulfilling multiple jobs simultaneously 有权
公开(公告)号：US10461801B2
公开(公告)日：2019-10-29
申请号：US15851122
申请日：2017-12-21
申请人： Raytheon Company
发明人： William B. Noble , Kevin Yang , Christopher J. Behrens
IPC分类号： H04B1/66 , H04B14/08
摘要： A method can include determining whether, based on job data and in completing a first job of jobs with a transmission at a fundamental frequency, a harmonic frequency of the fundamental frequency satisfies a second job of the jobs, and transmitting the transmission with the fundamental frequency and the harmonic frequency to complete the first and second jobs, respectively and simultaneously.

2. 发明授权

US5201060A Baseband signal communication apparatus 失效
标题翻译：基带信号通信设备
公开(公告)号：US5201060A
公开(公告)日：1993-04-06
申请号：US509955
申请日：1990-04-16
申请人： Shinichi Haruyama , Fusao Sekiguchi , Yoshikazu Kawashima , Ko Ishikawa
发明人： Shinichi Haruyama , Fusao Sekiguchi , Yoshikazu Kawashima , Ko Ishikawa
IPC分类号： H04L27/32 , G01S13/82 , H04B14/08
CPC分类号： G01S13/82 , H04B14/08
摘要： A baseband signal communication apparatus includes a transmission unit and a reception unit. The transmission unit superposes a subcarrier on one value of a baseband signal consisting of binary values, modulates a carrier with the baseband signal on which the subcarrier is superposed, and transmits the baseband signal as a transmission signal wave. The reception unit demodulates the baseband signal having the subcarrier superposed thereon by using a demodulator upon reception of the transmission signal wave, extracts the subcarrier from the demodulated signal by using a bandpass filter, and demodulates the baseband signal by causing a detector to detect an envelope of the subcarrier.
摘要翻译：基带信号通信装置包括发送单元和接收单元。传输单元将副载波叠加在由二进制值组成的基带信号的一个值上，对副载波叠加的基带信号进行调制，发送基带信号作为发送信号波。接收单元在接收到发送信号波时通过使用解调器对具有叠加在其上的子载波的基带信号进行解调，通过使用带通滤波器从解调信号中提取副载波，并且通过使检测器检测到信封来解调基带信号的子载波。

3. 发明授权

US4417349A SCA Data transmission system with a raised cosine filter 失效
标题翻译： SCA具有升余弦滤波器的数据传输系统
公开(公告)号：US4417349A
公开(公告)日：1983-11-22
申请号：US92463
申请日：1979-11-08
申请人： Michael Hills , Clay Durret , William Von Meister
发明人： Michael Hills , Clay Durret , William Von Meister
IPC分类号： H04B14/08 , H04H20/34 , H04L25/49 , H04L27/10 , H04H5/00 , H04L25/03
CPC分类号： H04L27/10 , H04B14/08 , H04H20/34 , H04L25/4906
摘要： A system and method for transferring digital data via the sub-carrier of a commercial broadcast FM radio station. Digital data generated by an originating subscriber is shaped with substantially a raised cosine response in the time domain. The shaped signal is then pre-emphasized and used to frequency modulate (direct angle modulate) a sub-carrier. The sub-carrier in turn frequency modulates the carrier and the data is transmitted by the radio station along with its commercial program. A receiving subscriber detects the sub-carrier and decodes and displays the originated data.
摘要翻译：一种用于经由商用广播FM无线电台的子载波传送数字数据的系统和方法。由始发用户产生的数字数据在时域中基本上具有升余弦响应。然后将成形信号预先强调并用于对副载波进行频率调制（直角调制）。副载波又对载波进行频率调制，数据由无线电台与其商业程序一起发送。接收用户检测子载波并解码并显示发起的数据。

4. 发明授权

US3172047A Frequency-modulated signal detector 失效
标题翻译：频率调制信号检测器
公开(公告)号：US3172047A
公开(公告)日：1965-03-02
申请号：US8463761
申请日：1961-01-24
申请人： HAZELTINE RESEARCH INC
发明人： RONZHEIMER STEPHEN P
IPC分类号： H03D3/00 , H03D3/04 , H04B14/08 , H04H20/88 , H04J1/20
CPC分类号： H04H20/88 , H03D3/00 , H03D3/04 , H04B14/08 , H04J1/20

5. 发明授权

US3146402A Frequency-modulated subcarrier detector 失效
标题翻译：频率调制副载波检测器
公开(公告)号：US3146402A
公开(公告)日：1964-08-25
申请号：US8463661
申请日：1961-01-24
申请人： HAZELTINE RESEARCH INC
发明人： LOUGHLIN BERNARD D
IPC分类号： H03D3/00 , H03D3/04 , H04B14/08 , H04H20/88 , H04J1/20
CPC分类号： H04H20/88 , H03D3/00 , H03D3/04 , H04B14/08 , H04J1/20
摘要： 945,268. Frequency discriminators. HAZELTINE CORPORATION. Dec. 19, 1961 [Jan. 24, 1961], No. 45539/61. Heading H3A. Relates to apparatus for measuring the repetition rate of a repetitive signal which comprises a means for amplitude limiting the repetitive signal, a differentiating means including an inductor for developing from the limited signal a series of pulses which in comparison to differentiated pulses developed in the absence of the inductor have a faster terminal decay than such pulses and means for rectifying the said pulses developed by the differentiating means so as to retain a series of same polarity pulses whose average value is representative of the repetition rate of the repetitive signal. The invention is particularly described with reference to detecting the modulation of a frequency modulated subcarrier of a frequency modulated multiplex signal, wherein the subcarrier is used as one of the modulating signals of a main carrier. Such a technique may be used to provide background music to normal programme material, or in stereo broadcasting. The main carrier is received in a unit 10, where the main modulating signal is detected and reproduced at 12 while the detected subcarrier is fed via a buffer amplifier 13 and a filter 14 to an amplifier 15 and a limiter 16, after which the subcarrier is fed to a detector 17. The detector comprises in addition to the conventional differentiating components 22, 23 an inductor 21, which speeds the recovery period of the differentiated wave (see curve B of Fig. 2a). A diode 24 rectifies the differentiated pulses, which are then passed to an integrator 26, 27, arranged to produce an output voltage depending upon the repetition rate of the input pulses. This signal is fed to an amplifier 18 and thence to an output reproduction stage 19. The arrangement is said to minimize the degradation in linearity which occurs in a conventional detector due to the failure of the differentiated pulses to return to zero before the following pulse occurs.

6. 发明授权

US2712598A Wireless broadcasting systems 失效
标题翻译：无线广播系统
公开(公告)号：US2712598A
公开(公告)日：1955-07-05
申请号：US22734251
申请日：1951-05-21
申请人： VISWANATHAN PATT ELAVATHUR SUB
发明人： VISWANATHAN PATT ELAVATHUR SUB
IPC分类号： H04B14/08
CPC分类号： H04B14/08

7. 发明授权

US2653221A Suppressed carrier radio communication system 失效
标题翻译：载波无线电通信系统
公开(公告)号：US2653221A
公开(公告)日：1953-09-22
申请号：US13054749
申请日：1949-12-01
申请人： ZENITH RADIO CORP
发明人： CARNAHAN CHALON W
IPC分类号： H04B1/68 , H04B14/00 , H04B14/08
CPC分类号： H04B14/006 , H04B1/68 , H04B14/08

8. 发明授权

US2267120A Limiting device 失效
标题翻译：限制装置
公开(公告)号：US2267120A
公开(公告)日：1941-12-23
申请号：US33452340
申请日：1940-05-11
申请人： RCA CORP
发明人： MATHES RICHARD E
IPC分类号： H03G11/02 , H04B14/00 , H04B14/08 , H04N1/00 , H04N7/045
CPC分类号： H03G11/02 , H04B14/006 , H04B14/08 , H04N1/00103 , H04N7/045

9. 发明授权

US2175270A Reduction of noise 失效
公开(公告)号：US2175270A
公开(公告)日：1939-10-10
申请号：US13396237
申请日：1937-03-31
申请人： RCA CORP
发明人： KOCH WINFIELD R
IPC分类号： H04B7/04 , H04B14/08
CPC分类号： H04B7/04 , H04B14/08

10. 发明授权

US1907109A Radio signaling system 失效
公开(公告)号：US1907109A
公开(公告)日：1933-05-02
申请号：US50182530
申请日：1930-12-12
申请人： WESTERN ELECTRIC CO
发明人： TURNER HINTON LESLIE
IPC分类号： H03C1/52 , H04B7/005 , H04B14/00 , H04B14/08
CPC分类号： H04B14/08 , H03C1/52 , H04B7/005 , H04B14/004

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