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31. 发明专利

JP2002305561A WIRELESS COMMUNICATION UNIT, WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICATION METHOD 审中-公开
公开(公告)号：JP2002305561A
公开(公告)日：2002-10-18
申请号：JP2002021485
申请日：2002-01-30
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NOMURA HIROYOSHI , YOSHIMURA YASUO , HORIIKE YOSHIO
IPC分类号： H04B1/40 , H04L1/16 , H04L29/08 , H04W28/06 , H04W92/08
摘要： PROBLEM TO BE SOLVED: To provide a wireless communication unit that can monitor reception of a wired signal and a wireless signal from equipment simultaneously at all times without making the configuration complicated and attain efficient communication at setup of a link. SOLUTION: The wireless communication unit is provided with an information attachment section 10 that attaches a response request flag, a consecutive transmission flag and an ACK request flag to a wireless message at transmission, a wireless message analysis section 17 that analyzes these pieces of the attached information and a communication procedure control section 3 that controls a communication procedure on the basis of it.

32. 发明专利

JP2002305408A ANTENNA 失效
公开(公告)号：JP2002305408A
公开(公告)日：2002-10-18
申请号：JP2001108168
申请日：2001-04-06
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HORIIKE YOSHIO , YOSHIKAWA YOSHISHIGE , NAKAGAWA MASAFUMI
IPC分类号： H01Q1/38 , H01Q1/24 , H01Q7/00
摘要： PROBLEM TO BE SOLVED: To provide an antenna which is compact and can obtain superior radiation characteristics and gain. SOLUTION: A line-type conductor foil, whose one end is open, is disposed on a printed board 11; a loop-type conductor foil, whose one end is connected with ground, is disposed on the opposite surface of the printed board or on a surface which interposes an insulating layer on the line-type conductor foil surface; the other end of the line-type conductor foil is electrically connected with the other end of the loop-type conductor foil; and the antenna is disposed on the printed board, where the end of the electrically connected side is set as a feeding point.

33. 发明专利

JP2002198888A PHS COMMUNICATION EQUIPMENT 失效
公开(公告)号：JP2002198888A
公开(公告)日：2002-07-12
申请号：JP2000394324
申请日：2000-12-26
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HORIIKE YOSHIO , NAKAGAWA MASAFUMI , SAKATA MASAAKI , ASANO KAZUTAKA
IPC分类号： H04M1/73 , H04B7/26
摘要： PROBLEM TO BE SOLVED: To reduce current and to prolong the life of a battery in PHS communication equipment where transmission and reception are performed by using PHS. SOLUTION: A DC/DC converter 9 and a time controller 10 are added to a PHS communication module 7 constituted of a high frequency transmission/ reception means 2, a (π/4)QPSK modulation/demodulation means 3, and a protocol controller 4. The PHS communication module 7 has a function for performing PHS communication at a public mode or a transceiver mode. The DC/DC converter 9 supplies power to the PHS communication module 7. The time controller 10 manages the operation schedule of the PHS communication module, operates the DC/DC converter 9 at time when the PHS communication module 7 is to start an operation, and transmits a timing signal for starting the operation to the PHS communication module 7. Thus, current can be reduced.

34. 发明专利

JP2002078027A WIRELESS NETWORK SYSTEM 失效
公开(公告)号：JP2002078027A
公开(公告)日：2002-03-15
申请号：JP2000268264
申请日：2000-09-05
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HONMA TSUGURO , HORIIKE YOSHIO
IPC分类号： H04L12/28 , H04W24/04 , H04W92/08 , H04Q7/38
摘要： PROBLEM TO BE SOLVED: To provide a wireless network system where a wireless unit relaying wireless communication of system component units can use a storage medium to simply register a unit identification code without any registration mistake. SOLUTION: In the case that a user configures a wireless network, the user connects wireless units 1a-1c respectively to terminals 6a-6c and no unit identification code to identify each wireless unit is yet set to the wireless units 1a-1c at this point of time. Then the user respectively inserts storage media 8a-8c storing unique unit identification codes not duplicate to each other to information read means 7a-7c of the wireless units 1a-1c. Thus, wireless mis-transmission resulting from setting of the same unit identification code to wireless units in the wireless network system can be prevented.

35. 发明专利

JP2001127829A COMMUNICATION SYSTEM 失效
公开(公告)号：JP2001127829A
公开(公告)日：2001-05-11
申请号：JP31056199
申请日：1999-11-01
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YOSHIMURA YASUO , HORIIKE YOSHIO , NOMURA HIROYOSHI
IPC分类号： H04L1/16 , H04L29/08
摘要： PROBLEM TO BE SOLVED: To transmit a data signal composed of a block group, in which data are divided into plural blocks, from a data transmitter and to enable a data receiver to immediately return a resending request signal, which contains a block number having a received error, after the end of the data transmitting signal when there is an error in a received block. SOLUTION: When dividing data into plural blocks, one block is made into variable length to M bits at a maximum, the first block is divided less than M bits and blocks after second one are divided into fixed length of M bits. When there is a received error in any block after second one, waiting time 51 until the transmission end of data blocks is calculated as (number of bits in bit synchronizing signal + number of bits in frame synchronizing signal 2 + number M of bits in data block) × (number of remaining non-received blocks). The data receiver previously has the transmitting time of a dummy signal 55, calculates the end time point of the data transmitting signal and transmits the resending request signal.

36. 发明专利

JP2000101554A SAMPLING CLOCK REPRODUCING CIRCUIT 失效
公开(公告)号：JP2000101554A
公开(公告)日：2000-04-07
申请号：JP26621298
申请日：1998-09-21
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HORIIKE YOSHIO , YOSHIKAWA YOSHISHIGE
IPC分类号： H03L7/06 , H04L7/033
摘要： PROBLEM TO BE SOLVED: To provide a sampling clock reproducing circuit in simple constitution for being easily made into an IC and reducing jitters. SOLUTION: This circuit is constituted of a receiver 2 for receiving and demodulating signals modulated by data, a reference oscillator 10 for oscillating near the frequency of the integral multiple of the modulation speed of reception signals, a frequency division means 11 for frequency-dividing the output of the reference oscillator 10, a phase shift means 12 for shifting the phase of the output of the frequency division means 11 and outputting a reference clock, a phase comparator 3 for comparing the phases of the demodulation output of the receiver 2 and the reference clock of the phase shift means 12 and generating the output corresponding to a phase difference and an integration means 4 for integrating the output of the phase comparator 3 and controlling the ratio of phase shift in the phase shift means 12. The clock which is the double of the reference clock from the phase shift means 12 is turned to a sampling clock for data discrimination.

37. 发明专利

JPH11136151A RECEIVER AND TRANSMITTER-RECEIVER 失效
公开(公告)号：JPH11136151A
公开(公告)日：1999-05-21
申请号：JP29387797
申请日：1997-10-27
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YOSHIKAWA YOSHISHIGE , HORIIKE YOSHIO
IPC分类号： H04B1/18 , H04B1/3822 , H04B1/40
摘要： PROBLEM TO BE SOLVED: To obtain a receiver which copes with both receiving sensitivity and an anti-interference wave characteristic by connecting a 1st high frequency filter element to the preceding stage of a high frequency amplifier and connecting a 2nd high frequency filter to the subsequent stage of the high frequency amplifier. SOLUTION: A high frequency signal that is inputted to an antenna terminal 12 is inputted to a 1st external terminal 4. A 1st high frequency filter element 1 partially eliminates an image frequency component and other interference wave components of the high frequency signal and an external terminal 5 that is connected to the other input-output terminal of the element 1 outputs the high frequency signal. It is amplified by a high frequency amplifier 8 and inputted to a 3rd external terminal 6 and outputted from a 4th external terminal 7 that is connected to the other input-output terminal of the 2nd high frequency filter element 2 with its image frequency component and other interference wave components further eliminated. A mixer 9 mixes an output of the terminal 7 with an output of a local oscillator 10 to be converted into an intermediate frequency signal.

38. 发明专利

JPH10112734A RECEIVER 失效
公开(公告)号：JPH10112734A
公开(公告)日：1998-04-28
申请号：JP26589196
申请日：1996-10-07
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YOSHIKAWA YOSHISHIGE , HORIIKE YOSHIO
IPC分类号： H04L27/14 , H04B1/16 , H04B1/26 , H04B1/30
摘要： PROBLEM TO BE SOLVED: To provide a receiver which is provided with a frequency converting means that can simultaneously suppress the effect of frequency deviation of a local signal and the production of a secondary distortion component. SOLUTION: The 1st local signal source 4 is frequencymodulated by a signal, source 5 for modulation, and the 1st intermediate frequency signal 8 which is frequency-spread by fixing a high frequency signal 3 with the 1st local signal 6 by the 1st mixer 7 is generated. The 2nd local signal whose frequency is almost equal to the one of a central frequency of the signal 8 is generated by the 2nd local signal source 9, the 2nd and 3rd intermediate frequency signals 15 and 16 are generated by mixing the 2nd local signal with the signal 8 by the 2nd and 3rd mixers 13 and 14, the frequency modulation is canceled by a canceling means 20 and the signals 15 and 16 are demodulated into a baseband signal by a demodulating means 21. The effect of frequency deviation of the 1st local signal is suppressed by frequency spread and the occurrence of a secondary distortion is suppressed by using the 2nd local signal of no modulation.

39. 发明专利

JPH1032566A SIGNAL DISCRIMINATOR AND RADIO EQUIPMENT USING THE SAME 失效
公开(公告)号：JPH1032566A
公开(公告)日：1998-02-03
申请号：JP18459696
申请日：1996-07-15
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAMOTO MASAHIRO , MATSUMURA TERUE , HORIIKE YOSHIO
IPC分类号： H04L7/00 , H04B1/10 , H04L7/02
摘要： PROBLEM TO BE SOLVED: To prevent current from being consumed so much even when data reception is disabled or regular data are discriminated to be error data. SOLUTION: A pulse measurement means 15 measures a pulse width of a signal. A 1-bit length stored in an ideal pulse storage means 16 is outputted to a comparison means 17. The comparison means 17 compares the pulse width sent from the pulse measurement means 15 with the 1-bit length sent from the ideal pulse storage means 16. A sampling clock generating means 18 generates a signal expressing a pulse width of the comparison result by the comparison means 17 to be one over a natural number.

40. 发明专利

JPH1032504A RADIO EQUIPMENT 失效
公开(公告)号：JPH1032504A
公开(公告)日：1998-02-03
申请号：JP18459796
申请日：1996-07-15
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MATSUMURA TERUE , HORIIKE YOSHIO , SUEMATSU TAKAYUKI
IPC分类号： H04B1/26 , H04B1/10 , H04L7/00
摘要： PROBLEM TO BE SOLVED: To improve receiving by starting the reception of a demodulated signal when the intensity of a radio signal becomes higher than a reference value and stopping signal reception when a period in which intensity is higher than the reference continues for more than a enough time to judge abnormality with respect to the abnormality of receiving at an early stage to stop receiving operation. SOLUTION: A carrier sensing means 34 measures the intensity of a received radio wave to compare a prescribed level (Es). When a receiving means comes into a receivable state and the means 34 detects a carrier, a signal judging means 35 analyzes a demodulated signal from the means 33 to execute bit synchronization detection, frame synchronization detection and request signal reception. When the means 35 confirms the request signal, an answering means 36 sends a meter inspecting value data from a meter 4 to a radio equipment 2 on a collecting side as a response signal. The equipment 2 receives this response signal and stores meter inspection value data in a data collecting device 5.

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