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1. 发明专利

JPS5761240B2 失效
公开(公告)号：JPS5761240B2
公开(公告)日：1982-12-23
申请号：JP7529677
申请日：1977-06-24
申请人： SANSUI ELECTRIC CO
发明人： IIDA HIROSHI , YOSHIDA AKEMASA
IPC分类号： H04S3/02 , H04H20/89 , H04R5/00

2. 发明专利

JPS5452458A RECEIVER USING PHASE SYNCHRONOUS LOOP CIRCUIT 失效
公开(公告)号：JPS5452458A
公开(公告)日：1979-04-25
申请号：JP11855577
申请日：1977-10-04
申请人： SANSUI ELECTRIC CO
发明人： IIDA HIROSHI , TAKAHASHI SUSUMU
IPC分类号： H03D1/22 , H03D1/00 , H03D1/24

3. 发明专利

JPS5286701A DEMODULATOR 失效
公开(公告)号：JPS5286701A
公开(公告)日：1977-07-19
申请号：JP341876
申请日：1976-01-14
申请人： SANSUI ELECTRIC CO
发明人： KURATA HIROTAKA , IIDA HIROSHI , TAKAHASHI SUSUMU
IPC分类号： H04H20/89

4. 发明专利

JPS5261402A DEMODULATING SYSTEM 失效
公开(公告)号：JPS5261402A
公开(公告)日：1977-05-20
申请号：JP13701175
申请日：1975-11-14
申请人： SANSUI ELECTRIC CO
发明人： KURATA HIROTAKA , IIDA HIROSHI , TAKAHASHI SUSUMU
IPC分类号： H04H20/89

5. 发明专利

JPH0287759A INFORMATION TRANSMISSION SYSTEM 失效
公开(公告)号：JPH0287759A
公开(公告)日：1990-03-28
申请号：JP23904088
申请日：1988-09-26
申请人： NIPPON TELEGRAPH & TELEPHONE , SANSUI ELECTRIC CO
发明人： OSAKA KEN , TANIDA TOSHIO , UCHINO SHINJI , TAKAHASHI SUSUMU , SATO KIYOSHI , IIDA HIROSHI
IPC分类号： H04M3/42 , H04M11/00
摘要： PURPOSE:To continue the transmission service and to improve the service performance even if communication at a voice band via a telephone exchange during the transmission of various information such as broadcast, music or data by executing the transmission of telephone information and the transmission of various information in frequency division. CONSTITUTION:When an incoming or outgoing telephone call exists while information is sent from an information source 29 or information is outputted from an information output section 30, the system is operated as shown in the following: That is, in the case of a subscriber call, when the subscriber hooks off a telephone set 24, a DC loop is formed by a coil L3, a subscriber line, a coil L1, a relay of an exchange 21 and coils L2, L4. Thus, a signal generated from the telephone set 24 is not given to information selection control sections 25, 26 because capacitors C3, C4 give a high impedance. In the case of the arrival of a call, the information is not given to the control sections 25, 26 but flows through the exchange 21, the coil L1, the subscriber circuit, the coil L3, the telephone set 24 and the coils L4, L12, then no effect is given to the signal from the information source 29.

6. 发明专利

JPS61277218A TRACKING ERROR CORRECTING SIGNAL GENERATING CIRCUIT FOR ELECTRONIC TUNING TYPE AM RECEIVER 失效
公开(公告)号：JPS61277218A
公开(公告)日：1986-12-08
申请号：JP11934785
申请日：1985-05-31
申请人： SANSUI ELECTRIC CO
发明人： IIDA HIROSHI , MISAWA YOSHIHARU
IPC分类号： H03J3/28
摘要： PURPOSE:To prevent the tracking error by providing an orthogonal wave detector, a phase shifter, a multiplier which multiplies two signals having the same phase or phases opposite to each other, and a low pass filter from which a tracking error correcting signal is obtained. CONSTITUTION:A tracking error correcting signal generating circuit consists of an orthogonal wave detector 5 which detects synchronously an intermediate frequency signal, a phase shifter 6 which gives in-phase or anti-phase relations to two output signals of said detector, a multiplier 7 which multiplies these two signals, and a low pass filter 8 which takes out the tracking error compensating signal as a DC component from the output of the multiplier. The detector 5 generates an output in case of the tracking error, and the output is different in phase by 180 deg. between the frequency of a received wave higher than the tuning point of a tuning circuit and that lower than the tuning point of the tuning circuit. Consequently, a DC voltage different in polarity between the frequency of the wave higher than the tuning point of the tuning circuit and that lower than the tuning point of the tuning circuit is obtained when two output signals are multiplied and pass the low pass filter. Thus, the tracking error is eliminated.

7. 发明专利

JPS5821937A DEMODULATING CIRCUIT OF AM STEREO SIGNAL 失效
公开(公告)号：JPS5821937A
公开(公告)日：1983-02-09
申请号：JP12015381
申请日：1981-07-31
申请人： SANSUI ELECTRIC CO
发明人： IIDA HIROSHI
IPC分类号： H04H1/00 , H04H40/36 , H04H5/00
摘要： PURPOSE:To reduce the effect of contiguous disturbance signals, by giving synchronous wave detection to AM stereo broadcast waves by means of the signals of the same phase and the signals having the phases shifted by 90 deg. to each other and accordingly ensuring the reception of the signal in a wide range. CONSTITUTION:Synchronous wave detection is given to the AM stereo signal which received the modulation of amplitude and phase by means of the synchronizing signals having the same phase as and a 90 deg. phase shift to an input AM wave. The output signals of the synchronous wave detection are defined as Ev cosphi and Evsinphi. These two signals are fed to a square sum subduplicate circuit 8 to obtain a amplitude modulation component Ev. While a tangent of the phase modulation component is obtaind by feeding the above-mentioned two signals to a divider circuit. The difference component between the left and right channels is extracted out of the product of the tangent and the amplitude modulation component. Then the left channel is separated from the right channel by a matrix circuit.

8. 发明专利

JPS5566147A FREQUENCY SYNTHESIZER 失效
公开(公告)号：JPS5566147A
公开(公告)日：1980-05-19
申请号：JP13878778
申请日：1978-11-13
申请人： SANSUI ELECTRIC CO
发明人： IIDA HIROSHI , YOSHIDA AKEMASA
IPC分类号： H04B1/26 , H03L7/18 , H03L7/185
摘要： PURPOSE:To secure selection and output of the necessary and steady frequency by counting the output frequency of the variable frequency oscillator via the signal which gives the necessary gate time and then giving the count value as the division ratio of the programmable divider. CONSTITUTION:The output of voltage control oscillator 1 is divided by programmable divider 2, and the phase comparison is performed at phase comparator 4 between the division output and the reference oscillation output of reference oscillator 3. Then the output of comparator 4 is fed back to oscillator 1 via the LPF and DC amplifier 5 to give control to the frequency of oscillator 1. Frequency counter 7 which counts the output frequency of variable frequency oscillator 6 is installed to such circuit along with latch circuit 9 which latches the output of counter 7. Then the count value of counter 7 is controlled by the timing signal of timing circuit 8 which uses the reference oscillation output of oscillator 3 as the input, and the output of counter 7 is applied as the division ratio of divider 2. Thus the frequency of oscillator 6 is altered, and the frequency of oscillator 1 is selected to the necessary frequency.

9. 发明专利

JPS5279601A DEMODULATOR 失效
公开(公告)号：JPS5279601A
公开(公告)日：1977-07-04
申请号：JP15692975
申请日：1975-12-25
申请人： SANSUI ELECTRIC CO
发明人： KURATA HIROTAKA , IIDA HIROSHI , TAKAHASHI NOBORU
IPC分类号： H04H20/89

10. 发明专利

JPS5928706A Demodulation circuit 失效
标题翻译：解调电路
公开(公告)号：JPS5928706A
公开(公告)日：1984-02-15
申请号：JP13739682
申请日：1982-08-09
申请人： Sansui Electric Co
发明人： IIDA HIROSHI , IWASAKI EIICHIROU
IPC分类号： H03D1/22 , H04H1/00 , H04H40/45 , H04H40/54
CPC分类号： H04H40/54 , H03D1/2236
摘要： PURPOSE:To simplify the constitution of a demodulation circuit without using an analog multiplier or the like, by switching synchronizingly an input amplitude modulation signal by a switching wave not including the 3rd harmonic for demodulating the signal. CONSTITUTION:A composite signal is inputted to a signal input terminal 1 of an FM stereo demodulation circuit and a clock signal produced in synchronizing with a pilot signal is inputted to a clock signal input terminal 2. This clock signal is frequency-divided at 1/3 and 1/2 frequency division circuits 3, 4 to output a couple of outputs Q1, Q1', Q2, Q2' having opposite phase, and the outputs are applied to AND gates 5, 6 and a pulse Q3 where 120 deg. period being 1/3 of one period is at H level and the rest is L level is outputted from the gate 5 and a pulse Q4 of opposite phase difference is outputted from the gate 6. The pulses Q3, Q4 control switches 9, 10 switching the composite signal of a switching circuit 7. Further, the input amplitude modulation wave is demodulated by the switching wave not including the 3rd harmonic and a difference signal L-R is outputted from the circuit 7.
摘要翻译：目的：为了简化解调电路的结构，不使用模拟乘法器等，通过不包括用于解调信号的三次谐波的开关波同步地切换输入幅度调制信号。构成：复合信号被输入到FM立体声解调电路的信号输入端子1，并且与导频信号同步产生的时钟信号被输入到时钟信号输入端子2.该时钟信号被分频为1 / 3和1/2分频电路3,4，以输出具有相反相位的一对输出Q1，Q1'，Q2，Q2'，并将输出施加到与门5,6和120度的脉冲Q3。一个周期的1/3是H电平，其余的L电平从门5输出，反相位差的脉冲Q4从门6输出。脉冲Q3，Q4控制开关9,10的开关转换电路7的复合信号。此外，输入幅度调制波由不包括三次谐波的开关波解调，差分信号LR从电路7输出。

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