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1. 发明专利

JPH06224947A MODULATOR 失效
公开(公告)号：JPH06224947A
公开(公告)日：1994-08-12
申请号：JP878893
申请日：1993-01-22
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HORIUCHI AKITO , HORIIKE YOSHIO , YAMAMOTO MASAHIRO
IPC分类号： H03C3/00 , H04L27/12
摘要： PURPOSE:To attain frequency modulation even for an NRZ code by taking a difference between an output signal from a level adjustment device and an output signal from a phase comparator so as to control an oscillating frequency of a voltage controlled oscillator with an output of the phase comparator. CONSTITUTION:A modulation signal fS is inputted to an input terminal 1, an output of a 1st frequency divider 6 is a signal frequency-modulated by the signal fS and a phase comparator 7 produces a phase error signal afS(x) proportional to the signal fS On the other hand, a level adjustment circuit 13 adjusts the level of the signal fS and a phase adjustment circuit 14 adjusts the phase and the circuit 14 outputs a signal bfS(y). A subtractor 12 subtracts the signal bfS(y) from the signal afS(x) to output a signal (signal afS(x)-signal bfS(y)) The output of the subtractor 12 is unchanged by allowing the circuit 13 to make level adjustment of a=b and allowing the circuit 14 to make phase adjustment of x=y. Thus, the oscillating frequency of a VCO 2 is modulated by the signal fS including a frequency component lower than a cut-off frequency of an LPF 10.

2. 发明专利

JPH06291689A WAVEFORM SHAPING DEVICE 失效
公开(公告)号：JPH06291689A
公开(公告)日：1994-10-18
申请号：JP7931293
申请日：1993-04-06
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HORIIKE YOSHIO , YAMAMOTO MASAHIRO , HORIUCHI AKITO
IPC分类号： H04B1/10 , H04L27/14
摘要： PURPOSE:To remove a spike noise which is characteristic to a frequency demodulation system by interpolating a delayed demodulated signal to a certain value when a spike noise detection signal is present. CONSTITUTION:The frequency-modulated radio wave signal from an antenna 1 is passed through a receiver 2, and a demodulating means 3 imposes frequency demodulation. Only a noise component higher than a data signal is extracted by an HPF 6 from the signal from a demodulation output signal (a) and sent to a spike noise detecting means 7, which detects the spike noise and sends the corresponding pulse to an interpolating means 9. The signal from the terminal (a), on the other hand, is sent to the means 9. The means 9 is controlled with the output pulse signal of the means 7 to outputs the output signal of the means 8 as it is unless there is the pulse signal, but holds the signal level from the means 8 at the time of the generation of the pulse signal when there is the pulse signal. The output signal of the means 9 is sent to a binarization circuit 5 through an LPF 4, binarized with a specific threshold value, and outputted.

3. 发明专利

JPH06244873A RECEIVER 失效
公开(公告)号：JPH06244873A
公开(公告)日：1994-09-02
申请号：JP3102793
申请日：1993-02-22
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAMOTO MASAHIRO , HORIIKE YOSHIO , HORIUCHI AKITO
IPC分类号： H03M5/12 , H04L25/49
摘要： PURPOSE:To provide the receiver for receiving a transmitted signal, to which Manchester encoding is performed, without degrading the S/N. CONSTITUTION:Since the band of a band limit filter 10 is set double as high as NRZ signal reception at the receiver for receiving the Manchester encoded signal, the S/N is degraded for 3dB rather than the time of NRZ signal reception but a signal, which S/N is improved for 3dB rather than a source signal, is provided by inputting a signal passed through the filter 10 to a data arithmetic means 11, inverting that signal at a signal inverting means 12, delaying it for one bit at a signal delay means 13 and adding the source signal and the output of the signal delay means 13 at a signal adding means 14. By detecting data from this signal, the degradation of the S/N for 3dB at the filter 10 is canceled and as a result, the degradation of the S/N is turned to 0dB.

4. 发明专利

JPH06244757A TRANSMITTER-RECEIVER 失效
公开(公告)号：JPH06244757A
公开(公告)日：1994-09-02
申请号：JP2873293
申请日：1993-02-18
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HORIIKE YOSHIO , YAMAMOTO MASAHIRO , HORIUCHI AKITO
IPC分类号： H04B1/40
摘要： PURPOSE:To shorten a lock-up time as much as possible and to perform FSK modulation to the oscillation frequency of a VCO directly with code strings by varying the signal transmission characteristics of an LPF at the time of lock-up and transmission. CONSTITUTION:For a reception operation, the radio waves of 429.75MHz, inputted to an antenna 1 are amplified through a transmission/reception switching means 2 in a high-frequency amplifier means 3 and then converted to 450kHz of an intermediate frequency in a frequency conversion means 4. Then, FSK demodulation is performed by a detection means 6. The signals of the VCO 8 are 34344-frequency-divided by a frequency divider means 9 and the reference signals of 12.5kHz are outputted at a reference frequency oscillation means 10. The phases of the 12.5kHz reference signals and the 34344-frequency-divided signals from the means 9 are compared and a phase difference is outputted in a phase comparator means 11 and the high-frequency components of the 12.5kHz signals are removed in the LPF 15. Then, the VCO 8 is controlled so as to make the phase difference '0' and the oscillation frequency is turned to 12.5kHzX34344=429.3MHz. The frequency dividing number 34344 of the frequency divider means 9 is set by the signals from a control means 16.

5. 发明专利

JPH06216951A FREQUENCY SHIFT KEYING RECEPTION EQUIPMENT 失效
公开(公告)号：JPH06216951A
公开(公告)日：1994-08-05
申请号：JP463693
申请日：1993-01-14
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HORIIKE YOSHIO , MURAMATSU TAKESHI , YOSHIMURA YASUO , YAMAMOTO MASAHIRO , HORIUCHI AKITO
IPC分类号： H04L27/14
摘要： PURPOSE:To receive a signal of large frequency shift or a signal of high code change speed to reproduce the code string of transmission data without error. CONSTITUTION:A phase difference detecting means 11 which detects the phase difference between signals from first and second mixing means 3 and 8 and a frequency correcting means 15 which detects the difference between a carrier signal frequency to be received and the signal frequency from an oscillating means 6 and controls the oscillation frequency of the oscillating means 6 in the frequency error eliminating direction are provided. A multiplying means 16 is provided which multiplies the signal by the signal of a pulse signal generating means 18 which generates a pulse signal from the signal of the phase difference detecting means 11 synchronously with a bit synchronizing signal. Thus, an angular frequency error (x) between the carrier frequency to be received and the oscillation frequency of the oscillating means 6 is corrected, and the code change speed is reduced to accurately reproduce a code string p(t).

6. 发明专利

JPH07318243A VENTILATING DRYER FOR BATHROOM 失效
公开(公告)号：JPH07318243A
公开(公告)日：1995-12-08
申请号：JP10964994
申请日：1994-05-24
申请人： MATSUSHITA ELECTRIC IND CO LTD , MATSUSHITA SEIKO KK
发明人： TAKEUCHI SHINICHI , HORIUCHI AKITO , MURAMATSU ATSUSHI
IPC分类号： F24F7/10 , D06F58/10 , F26B9/02
摘要： PURPOSE:To provide a ventilating dryer for a bathroom in which installing conditions and bathroom interior limit due to fire prevention ordinance laws of districts are alleviated. CONSTITUTION:A ventilating dryer body 15 which has a fan, a heater, a suction port for sucking the air from a bathroom, a discharge port for discharging the air to the bathroom and an exhaust port for exhausting the air out of the bathroom is provided at the outer wall of a building. The body 15 is mounted in a mounting frame 20 via a mounting plate 16. An air suction unit 24 and an air discharge unit 25 for connecting a suction duct 17, and a discharge duct 18 are provided in the bathroom. Thus, the installing conditions and bathroom interior limit due to the fire prevention ordinance laws of districts are almost eliminated. Since the frame 20 is provided, the dryer can be installed at the same season as a bathroom installing season, thereby improving executability.

7. 发明专利

JPH06217027A TRANSMITTING/RECEIVING DEVICE 失效
公开(公告)号：JPH06217027A
公开(公告)日：1994-08-05
申请号：JP729393
申请日：1993-01-20
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HORIIKE YOSHIO , YAMAMOTO MASAHIRO , HORIUCHI AKITO
IPC分类号： H04B1/38 , H04B7/26 , H04M11/00 , H04Q9/00 , H04W52/04
摘要： PURPOSE:To know the reception state of a transmitting/receiving device at low cost and with small electric power by connecting a test jig incorporated with a display device in an input/output terminal and showing the reception state on the display device. CONSTITUTION:A test jig provided with a display means is connected to a transmitting/receiving device. At the same time, the radio waves received from the transmitting/receiving device are selectively amplified by an antenna 6 and a receiver means 7. The test data are demodulated by an FSK demodulator means 8 and supplied to a data output means 9. Thus an A/D 15 starts its operation. Then the signal received from the means 7 is taken out as a digital signal in proportion to the level of the signal received from the transmitting/ receiving device. This digital signal is sent to a data output means 9. The means 9 outputs the received data and the A/D conversion data to an output terminal 13 and at the same time starts an answer means 16 to apply the FSK modulation to the carrier wave based on the A/D conversion data and to transmit the modulated carrier wave as a radio wave via a transmitter means 12 and the antenna 6.

8. 发明专利

JPH06216949A TRANSMITTER 失效
公开(公告)号：JPH06216949A
公开(公告)日：1994-08-05
申请号：JP810293
申请日：1993-01-21
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAMOTO MASAHIRO , HORIIKE YOSHIO , HORIUCHI AKITO
IPC分类号： H04B1/04 , H04L27/12
摘要： PURPOSE:To transmit accurate data by controlling and modulating the oscillation frequency of a VCO by the signal, which is obtained by allowing a signal corresponding to the phase difference between the frequency divided signal of the oscillation frequency and a reference signal to pass a filter, and the signal obtained by allowing a modulation signal to pass a waveform correcting means. CONSTITUTION:A phase comparing means 10 compares the signal obtained in a frequency dividing means 8 by dividing the oscillation frequency of a voltage controlled oscillation means 7 selecting a transmission frequency with the reference signal generated by a reference signal generating means 9. The signal corresponding to the phase difference outputted from the means 10 as the comparison result is allowed to pass a filter 11, and a transmission code string outputted from a modulation signal generating means 12 is allowed to pass a waveform correcting means 13, and both of them are inputted to the means 7. The means 13 has preliminarily determined frequency characteristic and phase characteristic, and the means 7 controls the oscillation frequency by both signals, and it is modulated by the code string and is amplified by a transmission signal amplifying means 6 and is transmitted from an antenna 1. Thus, accurate data is transmitted without the threshold level change to improve the reliability.

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