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1. 发明专利

JPH08221693A NAVIGATION SYSTEM 失效
公开(公告)号：JPH08221693A
公开(公告)日：1996-08-30
申请号：JP2275995
申请日：1995-02-10
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KAWASAKI AKIHISA , TATEDA YOSHIFUMI
IPC分类号： G09B29/00 , G01C21/00 , G01S5/02 , G01S19/14 , G08G1/0962 , G08G1/0969
摘要： PURPOSE: To obtain real-time information concerned in facilities by retrieving the communication number corresponding to the facilities which need information, from a storage device and communicating with the facilities directly through a communication equipment according to the communication number. CONSTITUTION: This system has an arithmetic unit 15 which retrieves the number of communication with the facilities specified by an input device 12, communicates with the facilities through the communication equipment 13 according to the retrieved communication number, and outputs the information obtained by the communication with the facilities through an output device 14. Then, a user specifies the facilities which need information, through the input device 12. The communication number corresponding to the specified facilities is retrieved from the storage device 11, and a communication with the facilities is made through the communication device 13 according to the retrieved communication number to output the information obtained by the communication with the facilities to the output device 14. Therefore, by communicating with the facilities specified on a mobile station side through the communication equipment 13 according to the communication number, the communication with the target facilities becomes possible through easy operation, and information on the facilities can be obtained in real time.

2. 发明专利

JPH08136636A SATELLITE SIGNAL TRACKING METHOD OF GPS RECEIVER 失效
公开(公告)号：JPH08136636A
公开(公告)日：1996-05-31
申请号：JP27912894
申请日：1994-11-14
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TATEDA YOSHIFUMI , KAWASAKI AKIHISA
IPC分类号： G01S19/24 , G01S5/14
摘要： PURPOSE: To make an inexpensive reference oscillator and inexpensive microprocessor usable so as to reduce the power consumption of a GPS receiver by dividing the frequency conversion performed by means of numerically controlled oscillators into a plurality of stages. CONSTITUTION: Carrier tracking is performed in two stages by performing frequency conversion 35 and 40 by using numerically controlled oscillators 34 and 39. In the frequency conversion 35, the frequencies of signals having frequencies of about 100kHz can be accurately converted, because the signal sampling period is as short as about 3.79μsec. The oscillator 34 can be constituted of a simple circuit and the operating speed of the oscillator 34 can be easily increased, because the oscillator 34 does not require any higher accuracy than 3bits while the output period is as short as about 0.379μsec. In the frequency conversion 40, the frequencies of signals having frequencies of about

3. 发明专利

JPH0854246A MAP MATCHING METHOD FOR NAVIGATION SYSTEM 失效
公开(公告)号：JPH0854246A
公开(公告)日：1996-02-27
申请号：JP18949294
申请日：1994-08-11
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TATEDA YOSHIFUMI , KAWASAKI AKIHISA , SATO IZUMI
IPC分类号： G01C21/00 , G01S5/02 , G01S19/14 , G01S19/40 , G01S19/50 , G08G1/0969 , G01S5/14
摘要： PURPOSE:To obtain a map matching method for navigation system of automobile employing a GPS receiver in which the positional reliability is enhanced while prolonging the matching internal by solving such problem as mistaking the road in an urban area or having little chance for matching. CONSTITUTION:Positioning results are inputted from a GPS receiver to a result input 1 and the matching state is judged at the step 10. In case of mismatching, conditions for starting the matching are evaluated at the step A4. In case of matching, conditions for sustaining the matching is evaluated and a position is estimated at the step B11 thus realizing a map matching where a highly reliable matching interval is long.

4. 发明专利

JPH05100007A DIFFUSION SYMBOL CAPTURING CIRCUIT 失效
公开(公告)号：JPH05100007A
公开(公告)日：1993-04-23
申请号：JP26445791
申请日：1991-10-14
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KUWATSURU KEIICHIRO , IKEDA TAKESHI , TATEDA YOSHIFUMI
IPC分类号： G01S19/30 , G01S19/37
摘要： PURPOSE:To shorten the time required in capturing in a dispersion symbol capturing circuit, which is used to synchronously capture the dispersion symbol of a GPS satellite electric wave. CONSTITUTION:A shift register 20 emits dispersion symbol signals P1-Pn, which are phase delayed bit by bit. These are entered into a sensing part 30, and the error etc., in the Doppler shift frequency, etc., between the satellite signal and the dispersion symbol signal of the satellite is removed according to the exclusion theory with the signals NI, NQ, etc., given from an NC transmitter 60 and the dispersion symbol signal of the satellite. The remaining signal components are counted by a sampling clock CK, and the correlation result is emitted. A control part judges capture of the dispersion symbol of the satellite signal by searching the maximum among the output data. In case nothing is captured, the search is made while the phase of the dispersion symbol signal PA is shifted in conformity to the control signal given by the control part 70, which is made repetitively until capturing takes place. Thus the dispersion symbol can be captured at a high speed by performing simultaneous searching using sensors in 'n' pieces.

5. 发明专利

JPH0420889A METHOD FOR MEASURING PSEUDO NOISE CODE OF GPS RECEIVER 失效
公开(公告)号：JPH0420889A
公开(公告)日：1992-01-24
申请号：JP12725990
申请日：1990-05-16
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TATEDA YOSHIFUMI , IKEDA TAKESHI
IPC分类号： G01S1/00 , G01S19/29 , G01S19/30
摘要： PURPOSE:To obtain the highly accurate measured value of the phase of a pseudo noise code without tracking and drawing the pseudo noises by obtaining the change in phase of the pseudo noise code based on the change in phase of a carrier wave, and performing subtraction between the phase errors of the estimated value of the pseudo noise code and the received signal. CONSTITUTION:In a demodulator part 9 of a GPS receiver, the phase errors of a pseudo noise code and a carrier wave are independently measured. The measured results are delivered into a control part 8. When the radio wave from a satellite is interrupted, a pseudo-noise-code generating part 10 is controlled, and the pseudo noise code is scanned. Then the satellite signal is detected with the demodulator part 9. The phase of the pseudo noise code when the signal is detected at the next time is set in the generator 10. The phase of the pseudo noise code is measured with the demodulator part 9. Thereafter, whether the signal of the satellite is received or not is confirmed. Then, the phase of the pseudo noise code is changed. Then, the phase of the pseudo noise code of the satellite signal is computed by the operation based on the preset value and the changed value of the pseudo noise code and the frequency of the regenerated carrier wave. The value is outputted as the measured value.

6. 发明专利

JPH0226500B2 失效
公开(公告)号：JPH0226500B2
公开(公告)日：1990-06-11
申请号：JP2069583
申请日：1983-02-10
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TATEDA YOSHIFUMI , HAYAKAWA YOSHIHIRO , NAKAMURA TAKAHIRO , KAWABUCHI MASAMI
IPC分类号： A61B8/00 , A61B8/14 , A61B10/00

7. 发明专利

JPH0224533B2 失效
公开(公告)号：JPH0224533B2
公开(公告)日：1990-05-29
申请号：JP13357780
申请日：1980-09-24
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TATEDA YOSHIFUMI , YANO TSUTOMU , HAYAKAWA YOSHIHIRO , IRIOKA KAZUYOSHI , FUKUKITA HIROSHI , FUKUMOTO AKIRA
IPC分类号： A61B8/00 , A61B8/14 , A61B10/00 , G01S15/89

8. 发明专利

JPH02100525A POWER LINE CARRIER SYSTEM COMMUNICATION EQUIPMENT 失效
公开(公告)号：JPH02100525A
公开(公告)日：1990-04-12
申请号：JP25405088
申请日：1988-10-07
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： FUJIMORI YASUHIRO , TERANISHI AKIO , TATEDA YOSHIFUMI
IPC分类号： H04B3/54
摘要： PURPOSE:To attain communication by means of a lighting line by transmitting transmission data '0' and '1' by means of turning on and off a diffusion signal, inversely diffusing data by means of a square detector and discriminating data according to whether it has exceeded a threshold level or not. CONSTITUTION:Data to be transmitted is converted into a prescribed digital signal in a transmission data part 1, and is transmitted to a multiplier 3. In the multiplier 3, a data signal inputted from the transmission data part 1 is diffused by a pseudo noise signal. Furthermore, the signal is mixed by the carrier signal of a 225KHz band sin wave, which a carrier signal generation part 4 transmits. Then, a band pass filter 6 band-filters only the signal of 50K-450KHz band and transmits it to the lighting line. The reception signal transmitted from the lighting line is inversely diffused by the square detector 9, and a tuning circuit 10 fetches the frequency twice as much as the carrier signal of the carrier signal generation part 4. The fetched signal performs the discrimination of '0' or '1' by a comparator 11.

9. 发明专利

JPH0213979B2 失效
公开(公告)号：JPH0213979B2
公开(公告)日：1990-04-05
申请号：JP21455684
申请日：1984-10-12
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TERANISHI AKIO , TATEDA YOSHIFUMI
IPC分类号： H04J13/00 , H04B1/713

10. 发明专利

JPS649012B2 失效
公开(公告)号：JPS649012B2
公开(公告)日：1989-02-16
申请号：JP10680281
申请日：1981-07-07
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HAYAKAWA YOSHIHIRO , YANO TSUTOMU , TATEDA YOSHIFUMI , FUKUKITA HIROSHI , FUKUMOTO AKIRA
IPC分类号： A61B8/00 , G01N29/44 , G01S7/52 , G10K11/30 , G10K11/34

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