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1. 发明专利

JPH01232891A CATV RECEPTION CONVERTER 失效
公开(公告)号：JPH01232891A
公开(公告)日：1989-09-18
申请号：JP5843388
申请日：1988-03-14
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAJIN HIRONORI , ISHIDA TOAO
IPC分类号： H03H7/48 , H04B1/26 , H04N7/16
摘要： PURPOSE:To stabilize descrambling and to improve isolation by using a 1:4 or 1:2 impedance transformer employing a ferrite core so as to constitute a distributer. CONSTITUTION:A scrambled CATV signal is subjected to frequency conversion by a frequency converter 2 and its output signal is distributed by a distributer 3 comprising a 1:4 or 1:2 impedance transformer employing a ferrite core. The distributed one output is inputted to a descramble circuit 5 and the other output is inputted to a descrambler control signal extraction circuit 4. The descrambling of the descrambler circuit 5 is controlled by a descrambler control signal extracted by the descrambler control signal extraction circuit 4. Moreover, the signal with an interception disturbing signal released therefrom by the descrambler circuit 5 is inputted to a television receiver or an intermediate frequency signal processing circuit 101.

2. 发明专利

JPH0548356A HIGH FREQUENCY POWER AMPLIFIER 失效
公开(公告)号：JPH0548356A
公开(公告)日：1993-02-26
申请号：JP20088191
申请日：1991-08-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAJIN HIRONORI
IPC分类号： H03G3/30
摘要： PURPOSE:To operate the high frequency power amplifier at an optimum efficiency by decreasing the control voltage of the amplifier up to a voltage at which the output is not reduced and keeping the voltage in a device controlling the power of the high frequency power amplifier. CONSTITUTION:A high frequency signal inputted to an input terminal 11 is amplified by a power amplifier 12 and sent to an output terminal 14 through a signal transmission line 13. Part of the signal is extracted as a detection output 15 and converted into a DC at a detection circuit 16 and its DC voltage 17 is inputted to a voltage control circuit 18 and a monitor circuit 19. The monitor circuit 19 stores the detection DC voltage 17 representing it that the output power of the power amplifier 12 reaches a prescribed value to a memory 20 and decreases the detection DC voltage 17 after the control voltage of the voltage control circuit 18 is decreased by a prescribed quantity by a degree not lower than the voltage stored in the memory 20. The power amplifier 12 is operated by the final voltage.

3. 发明专利

JPH0214692A CATV CONVERTER 失效
公开(公告)号：JPH0214692A
公开(公告)日：1990-01-18
申请号：JP16428888
申请日：1988-06-30
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KAWAMOTO NOBORU , YAJIN HIRONORI
IPC分类号： H04N7/16
摘要： PURPOSE:To attain monolithic circuit integration by providing a differential amplifier and a voltage source controlled by a timing pulse to a synchronizing signal reproduction circuit. CONSTITUTION:An amplifier 43 having a couple of differential pairs and a voltage source 58 controlled by a timing pulse are provided to the synchronizing signal reproduction 61, the gain of the differential amplifier 43 is increased/ decreased to recover the synchronizing signal component. Thus, a switching diode and a coil not easily subject to monolithic linear integrated circuit processing are not in use, the synchronizing signal reproduction circuit 61 are subject to monolithic linear circuit integration, the number of components is reduced remarkably and small sized and low cost device is realized.

4. 发明专利

JPH0548696A CLOCK DEVICE OF AUTOMOBILE TELEPHONE 失效
公开(公告)号：JPH0548696A
公开(公告)日：1993-02-26
申请号：JP22637791
申请日：1991-08-13
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAJIN HIRONORI
IPC分类号： H04B7/26 , H04M1/21
摘要： PURPOSE:To automatically express the time display of a clock device in an automobile telephone in terms of spot time so as to display it through the use of country code information transmitted from the base station of the automobile telephone. CONSTITUTION:Input time and the country code which is transmitted from the base station are inputted in an input circuit 11 and a clock circuit 12 displays time in a display part 13 in accordance with succeeding time change. The country codes transmitted from the base station of the shifted destination areas are detected in the input circuit 11 so as to be transmitted to a compensating circuit 14 and the compensating circuit 14 expresses time display in terms of spot time from the information and initial time information so as to display it in the display part 13.

5. 发明专利

JPH0555911A PLL OSCILLATOR 失效
公开(公告)号：JPH0555911A
公开(公告)日：1993-03-05
申请号：JP20918091
申请日：1991-08-21
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAJIN HIRONORI
IPC分类号： H03L7/107
摘要： PURPOSE:To make the improvement of convergence time at the start of the oscillation of the PLL oscillator compatible with the improvement of the C/N after convergence. CONSTITUTION:The phase of the frequency of an output 15 of a voltage controlled oscillator 14 passing through a frequency divider 17 is compared with the phase of a reference frequency 11 at a phase comparator 12, its output is filtered by a low frequency band pass circuit 13 to control the control voltage of the voltage controlled oscillator 14. A control circuit 19 outputting the start of the oscillation and issuing the revision instruction controls the cut-off frequency of the low frequency band pass circuit 13 to be high at the time of the convergence of the oscillating frequency and to be low after the convergence.

6. 发明专利

JPH0555844A POWER AMPLIFIER DEVICE 失效
公开(公告)号：JPH0555844A
公开(公告)日：1993-03-05
申请号：JP20917891
申请日：1991-08-21
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAJIN HIRONORI
IPC分类号： H03F3/60 , H04B1/04
摘要： PURPOSE:To remove variation in the control power of a power amplifier which is generated due to the load and mismatching of the power amplifier. CONSTITUTION:In a signal line 12 for transmitting the output of the power amplifier 11, a control circuit 19 is driven based upon the average value of detection outputs obtained from two coupling capacitors 13, 20 arranged at optional positions mutually separated only by 1/4 wavelength to control the power amplifier 11. Since the two capacitors 13, 20 are mutually separated by 1/4 wavelength even when they are arranged at any position on the signal line 12, the control circuit 19 is not easily influenced by a standing wave on the line 12.

7. 发明专利

JPS62219823A MICROWAVE CIRCUIT DEVICE 失效
公开(公告)号：JPS62219823A
公开(公告)日：1987-09-28
申请号：JP6223786
申请日：1986-03-20
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NAKAJIMA YOSHIHIRO , YAJIN HIRONORI
IPC分类号： H04B1/08 , H01P1/00 , H04B1/26
摘要： PURPOSE:To maintain the desired oscillation output of local oscillation, oscillating frequency stability and oscillating mode by connecting the rear face of a metallic base plate in contact with a local oscillation circuit board high frequency ground potential pattern via a metallic thin plate with the recess of a metallic chassis and an RF mixing circuit board high frequency ground potential pattern with the rear face of the metallic base plate of the local oscillation circuit block respectively to ground in terms of high frequencies. CONSTITUTION:The RF mixed circuit input side high frequency ground part 18 of a metallic thin plate 15 is clipped between the input part of the RF mixing circuit board 2 and a metallic chassis 1 and they are tightened by a screw. While the local oscillation circuit output side high frequency ground part 17 of the metalic thin plate 15 is being deformed at the end face of the metalic base plate 11 and the output part of the local oscillation circuit board 9 and the input part of the RF mixing circuit board 2 are being butted, the local oscillation circuit block 4 is fitted to the recess 5 of the metallic chassis 1 and they are tightened. Thus, the projection 16 is in contact with the metalic base 11 and the recess 5 at the same time. Then the high frequency grounding level of the output section of the local oscillation circuit block 4 with respect to the high frequency grounding level of the RF mixing circuit board 2 is stabilized, the impedance matching between the local oscillation circuit and the RF mixing circuit is made stable, the output of the local oscillation is kept to a desired oscillation output so as to facilitate the stability of oscillation frequency and the oscillation mode.

8. 发明专利

JPS62219697A MICROWAVE APPARATUS 失效
公开(公告)号：JPS62219697A
公开(公告)日：1987-09-26
申请号：JP6224086
申请日：1986-03-20
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAJIN HIRONORI , YAMADA TAKASHI , TAMURA YOSHIFUMI , KAWAMOTO NOBORU
IPC分类号： H01P3/08 , H01P1/00 , H05K9/00

9. 发明专利

JP2005223802A Mobile communication terminal device 审中-公开
标题翻译：移动通信终端设备
公开(公告)号：JP2005223802A
公开(公告)日：2005-08-18
申请号：JP2004031782
申请日：2004-02-09
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： WATANABE SATOSHI , YAJIN HIRONORI
IPC分类号： H04B1/40 , H04B7/08 , H04B7/26 , H04M1/00
摘要： PROBLEM TO BE SOLVED: To provide a portable telephone set in which an antenna of high reception sensitivity can be selected in accordance with the inclination of a mobile communication terminal.
SOLUTION: A mobile communication terminal is provided with: a plurality of antennas; a case which incorporates a radio unit including an antenna selection section for selecting one of the plurality of antennas; a sensor for detecting the inclination of the case; and a control section for controlling the radio unit. The inclination of the case is recognized by the control section on the basis of a signal of the sensor during a voice call, and the antenna of high reception sensitivity is selected out of the plurality of antennas depending on the inclination, so that the deterioration of antenna gains caused by the head of a human body or any other obstacle is reduced and speaking quality can be ensured.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种便携式电话机，其中可以根据移动通信终端的倾斜度来选择具有高接收灵敏度的天线。解决方案：移动通信终端设置有：多个天线; 一种包括用于选择多个天线之一的天线选择部的无线电单元的情况; 用于检测壳体的倾斜度的传感器; 以及用于控制无线电单元的控制部分。控制部根据语音通话期间的传感器的信号识别出该情况的倾斜度，根据倾斜度从多个天线中选择高接收灵敏度的天线，使得劣化由人体头部或任何其他障碍引起的天线增益降低，能够保证说话质量。版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JP2005192055A Opening and closing type radio communication equipment 审中-公开
标题翻译：打开和关闭类型无线电通信设备
公开(公告)号：JP2005192055A
公开(公告)日：2005-07-14
申请号：JP2003433065
申请日：2003-12-26
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： YAMAKAWA TOSHIKI , YAJIN HIRONORI
IPC分类号： H01Q1/48 , H01Q1/08 , H01Q1/24 , H04M1/02
摘要： PROBLEM TO BE SOLVED: To provide opening and closing type radio communication equipment stabilizing antenna characteristics and SAR characteristics by easy structure.
SOLUTION: Projected connection parts 9a, 9b for connecting grounds formed on a first circuit substrate 5 and a second circuit substrate 6 are provided in a state in which a cabinet is closed. Thus, high frequency current to be generated by receiving electromagnetic waves by an antenna part 7 flows in the same directions of both circuit substrate 5, 6, evenly and with well balance. Consequently, distribution of the high frequency current is stabilized.
COPYRIGHT: (C)2005,JPO&NCIPI

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