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101. 实用新型

JPS60121351U 失效
公开(公告)号：JPS60121351U
公开(公告)日：1985-08-16
申请号：JP888984
申请日：1984-01-25
IPC分类号： H04H40/36 , H04H40/45 , H04H5/00

102. 发明专利

JPS60150343A METHOD AND APPARATUS FOR AM STEREO TRANSMISSION 失效
公开(公告)号：JPS60150343A
公开(公告)日：1985-08-08
申请号：JP617484
申请日：1984-01-17
申请人： SANSUI ELECTRIC CO
发明人： TAKAHASHI SUSUMU , IIDA HIROSHI
IPC分类号： H04H1/00 , H04H40/36 , H04H40/45 , H04H5/00
摘要： PURPOSE:To attain listening without no listening problem even with the reception by a conventional monaural receiver and also bringing the occupied band of a side band wave within a band being a similar degree to that of a conventional AB broadcast reception by transmitting a low frequency as the sum of left/right sound signals and a high frequency as a square mean value of the difference between the sum and the subtraction of the left/right sound signals. CONSTITUTION:The left/right sound signals L, R applied to input terminals 1, 1' are added/subtracted by a matrix circuit 2 and converted into a sum signal (L+R) and a difference signal (L-R). The sum signal (L+R) is modulated into a signal of (1+L+R)cosomegat at an amplitude modulator 3 and the difference signal (L-R) is modulated into a -(L-R)sinomegat at a balanced modulator 4. Outputs of the amplitude modulator 3 and the balanced modulator 4 are synthesized at an adder 5. An AM stereo signal S transmitted to the sound signal with a low frequency is S=(1+L+R)cos(omegat+phi) and an AM stereo signal S transmitted to a sound signal with a high frequency is S=[(1+L+R) +(L-R) ] .cos(omegat+phi).

103. 发明专利

JPS60114093A SOUND MULTIPLEX SYSTEM FOR TV SIGNAL 失效
公开(公告)号：JPS60114093A
公开(公告)日：1985-06-20
申请号：JP22142383
申请日：1983-11-26
申请人： FUJITSU LTD
发明人： SAKATA TAKASHI , HANABATAKE TOSHIO
IPC分类号： H04N5/60 , H04H1/00 , H04H40/36 , H04N7/025 , H04N7/03 , H04N7/035 , H04N7/08
摘要： PURPOSE:To multiplex sound signals within one horizontal scan period and transmit them without providing particular multiplex period for the sound signals by compressing time axes of a luminance signal Y and chrominance signal C, by phase-modulating synchronizing signals consisting of sine wave bursts of TV signals by a time-division multiplexed TCM system through digital sound signals, and multiplexing the sound signals. CONSTITUTION:PCM sound signals are read out from a buffer memory BM during synchronizing signal generation period, applied to a phase modulation circuit PM and the phase of synchronizing signals of the sine wave burst are phase- modulated by the read out PCM sound signals. The phase-modulated synchronizing signals are inserted for horizontal synchronization of a luminance signal Y and chrominance signal C, and their unnecessary higher harmonic components are eliminated by a low-pass filter LPF1 to be sent out as TV signals into which the sound signals are multiplexed by a TCM system. A receiving side separates synchronizing signals, and reproduces the sound signals by phase-demodulating the separated synchronizing signals.

104. 实用新型

JPS604074U 失效
公开(公告)号：JPS604074U
公开(公告)日：1985-01-12
申请号：JP9544183
申请日：1983-06-20
IPC分类号： H04N5/60 , H04H1/00 , H04H20/47 , H04H40/36 , H04H5/00

105. 发明专利

JPS60833B2 失效
公开(公告)号：JPS60833B2
公开(公告)日：1985-01-10
申请号：JP390179
申请日：1979-01-19
申请人： PIONEER ELECTRONIC CORP
发明人： MORIOKA KYOSHI
IPC分类号： H04H1/00 , H04H20/88 , H04H40/36 , H04N5/60

106. 发明专利

JPS5989047A AM STEREO RECEIVER 失效
公开(公告)号：JPS5989047A
公开(公告)日：1984-05-23
申请号：JP19934482
申请日：1982-11-11
申请人： MITSUBISHI ELECTRIC CORP
发明人： MIKURIYA MAKOTO
IPC分类号： H04H1/00 , H04H40/36 , H04H5/00
摘要： PURPOSE:To detect a display signal at a high speed by triggering a monostable multivibrator with an AM stereo display signal fed from a difference signal demodulated output, and setting the output pulse width of said multivibrator longer than the period of the stereo display signal to perform a stereo display with the output pulse. CONSTITUTION:A stereo display signal is extracted from a difference signal demodulated output through an LPF1 of an AM stereo receiver. This display signal is amplified by an amplifying circuit 2 and converted into a square wave which is applied with waveform shaping through a waveform shaping circuit 3. A triggerable monostable multivibrator 4 is triggered at the rise of the square wave, and the output pulse of the vibrator 4 is supplied to an output pulse display circuit 5. The time width of said output pulse is set longer than the cycle of the stereo display signal. The circuit 5 displays the stereo signal in response to the output pulse of the vibrator 4. Then a stereo display signal is detected at a high speed.

107. 发明专利

JPS5920211B2 失效
公开(公告)号：JPS5920211B2
公开(公告)日：1984-05-11
申请号：JP8315380
申请日：1980-06-19
申请人： PIONEER ELECTRONIC CORP
发明人： NUMATA TATSUO , NISHIOKA AKIRA , HIRATA HITOSHI
IPC分类号： H03G3/34 , H04B1/10 , H04H1/00 , H04H40/36

108. 实用新型

JPS5929855U JPS5929855U - 失效
公开(公告)号：JPS5929855U
公开(公告)日：1984-02-24
申请号：JP12631782
申请日：1982-08-20
IPC分类号： H04H1/00 , H04H40/36 , H04H5/00

109. 实用新型

JPS593639Y2 JPS593639Y2 - 失效
公开(公告)号：JPS593639Y2
公开(公告)日：1984-02-01
申请号：JP9293679
申请日：1979-07-04
IPC分类号： H04B1/10 , H04B1/16 , H04H1/00 , H04H40/36 , H04H5/00

110. 发明专利

JPS5917745A Signal generating circuit 失效
标题翻译：信号发生电路
公开(公告)号：JPS5917745A
公开(公告)日：1984-01-30
申请号：JP12718282
申请日：1982-07-20
申请人： Sanyo Electric Co Ltd , Tokyo Sanyo Electric Co Ltd
发明人： INOUE YASUAKI
IPC分类号： G06G7/14 , G06G7/22 , H04H1/00 , H04H40/36
CPC分类号： H04H20/88
摘要： PURPOSE:To integrate a signal generating circuit and apply it to the demodulating circuit of an AM stereo signal, by providing a circuit which uses the signal from a phase detecting circuit as the input and outputs a signal approximate to tan characteristics. CONSTITUTION:A current, which corresponds to a phase phi of a phase detecting circuit, from an input terminal 5 is applied to the first circuit consisting of the first and the second amplifying circuits 6 and 8 and a hyperbolic arc tangent circuit 7, and the output is added to an adder. The output of the second circuit consisting of the third amplifying circuit 9 is added to the adder, and the signal approximate to the tan characteristics is outputted from an output terminal 10. The circuit of the first circuit is constituted with a feedback differential amplifier having the tan characteristics, and an output signal of B, btanh (X/a) (B, a, and b are constants) is generated for an input signal X from the first circuit. An output signal of B(1-b/a) is generated from the second circuit 9 for the input signal X, and both output signals are added by the adder, and the signal approximate to the tan characteristics is outputted from the output terminal 10.
摘要翻译：目的：为了集成信号发生电路并将其应用于AM立体声信号的解调电路，通过提供使用来自相位检测电路的信号作为输入并输出接近于tan特性的信号的电路。构成：将来自输入端子5的对应于相位检测电路的相位phi的电流施加到由第一和第二放大电路6和8以及双曲线反正切电路7组成的第一电路，并且输出被加到加法器。由第三放大电路9构成的第二电路的输出被加到加法器中，从输出端子10输出接近于tan特性的信号。第一电路的电路由反馈差动放大器对于来自第一电路的输入信号X，产生具有B，btanh -1（X / a）（B，a和b为常数）的输出信号。从输入信号X的第二电路9生成B（1-b / a）的输出信号，由加法器相加两个输出信号，从输出端子10输出接近于tan特性的信号。

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