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1. 发明专利

JPS60107925A SOUND RECORDER FOR PERSONAL RATIO CALL 失效
公开(公告)号：JPS60107925A
公开(公告)日：1985-06-13
申请号：JP21701683
申请日：1983-11-16
申请人： MITSUBISHI ELECTRIC CORP
发明人： MITSUI HIDEO , YANABE JIYUNJI
IPC分类号： G11B31/00 , H04B1/40
摘要： PURPOSE:To record the calling from opponent-side radio equipment automatically by detecting an recording the signal from an external speaker output terminal, and resetting radio equipment a specific time later and setting in a reception ready state. CONSTITUTION:The external speaker output terminal SP of radio equipment is provided with a signal detecting circuit 1, and the 1st the 2nd timer circuits 2 and 3 are connected to the detecting circuit 1. When the radio equipment enter a speech channel and the calling from the opponent side is induced at the external speaker output terminal SP as a speech signal (a), the detecting circuit 1 detects that and the 1st timer circuit 2 and the 2nd relay circuit 5 operate. Consequently, a sound recording circuit 6 operates to record said speech signal (a). When the speech signal (a) is not outputted any more, the 2nd timer circuit 3 operates and the 1st relay circuit 4 is driven a specific time later to reset and switch the radio equipment into the reception ready state.

2. 发明专利

JPS5941604B2 JPS5941604B2 - 失效
公开(公告)号：JPS5941604B2
公开(公告)日：1984-10-08
申请号：JP6916179
申请日：1979-05-30
申请人： Mitsubishi Electric Corp
发明人： MITSUI HIDEO
IPC分类号： H03G3/20 , H03J7/18 , H04B1/16
CPC分类号： H03J7/18

3. 发明专利

JPS55159618A RECEIVING METHOD OF ELECTRONIC TUNING TYPE AND ITS UNIT 失效
公开(公告)号：JPS55159618A
公开(公告)日：1980-12-11
申请号：JP6916179
申请日：1979-05-30
申请人： MITSUBISHI ELECTRIC CORP
发明人： MITSUI HIDEO
IPC分类号： H03G3/20 , H03J7/18 , H04B1/16
摘要： PURPOSE:To avoid mischannel selection even with faster channel operation speed, by lowering the sharpness of tuning circuit than that listening of signal during channel selective operation only. CONSTITUTION:During channel selective operation for automatically and manually broadcast signal wave, a driving circuit 13 is operated and the tuning circuit sharpness Q including a high frequency amplifying circuit 12 and an intermediate frequency amplifier 14 is made lower than listening the signal. When the variable gain circuit is at a maximum gain, the level appeared at the output point B of the amplifier 14 is varied. But, in this case, since the Q of tuning circuit including the circuits 12 and the amplifier 14 is made lower, the level change at the instance of channel change-over is less. Accordingly, the leading of the AGC voltage of the gain control time constant circuit 11 including the detection circuit is made faster. That is, the circuit 11 including the detection circuit can be followed and the mischannel selection due to the saturation of the signal circuit can be avoided.

4. 发明专利

JPH03112222A ON-VEHICLE TYPE RADIO RECEIVER 失效
公开(公告)号：JPH03112222A
公开(公告)日：1991-05-13
申请号：JP24934089
申请日：1989-09-27
申请人： MITSUBISHI ELECTRIC CORP
发明人： MITSUI HIDEO
IPC分类号： H04B1/16
摘要： PURPOSE:To easily select a receivable broadcast station and to easily judge the requirement of switching of the broadcast station by displaying the receivable broadcast station or a correspondent frequency and its reception level on a display. CONSTITUTION:A frequency exceeding a prescribed reception level and the reception level corresponding to it are stored in a memory part 9 in the sweeping operation of a reception frequency. The content of the memory can be called with an operation from the outside, and also, a frequency or correspondent broadcast station name, the reception level, and a button number to be operated, etc., are displayed on the appropriate parts of a display part 10A and a reception intensity display part 10B. All the targeted reception frequencies are swept while a vehicle travels, and frequency information with a low reception level is replaced by frequency information with a high reception level. When desired frequency information out of the frequency information being displayed is selected, the switching of the reception frequency is performed by depressing a desired number button for frequency.

5. 发明专利

JPS6432535A ON-VEHICLE AUDIO EQUIPMENT 失效
公开(公告)号：JPS6432535A
公开(公告)日：1989-02-02
申请号：JP18652187
申请日：1987-07-28
申请人： MITSUBISHI ELECTRIC CORP
发明人： MITSUI HIDEO
IPC分类号： H04B1/08 , H04B1/16
摘要： PURPOSE:To properly grasp the state of the outside of a vehicle in terms of sound without imposing a burden on a driver by applying required sound volume attenuation when an alarm tone is sensed from an ambulance car at the outside of its own vehicle. CONSTITUTION:The driver operates properly an operation section 25A in a radio function section 2A to apply channel selection. In this state, when an alarm sound from, for example, an ambulance car is sensed by a specific tone sensor section 26, a prescribed condition signal is fed to a mute section 22 via a switch 27A. Thus, the output sound from the speaker 3 is reduced remarkably to listen to the alarm tone clearly.

6. 发明专利

JPS63177607A ON-VEHICLE ELECTRONIC TUNING TYPE RADIO RECEIVER 失效
公开(公告)号：JPS63177607A
公开(公告)日：1988-07-21
申请号：JP821787
申请日：1987-01-19
申请人： MITSUBISHI ELECTRIC CORP
发明人： MITSUI HIDEO
IPC分类号： H03J7/18 , H03J5/02 , H04B7/12
摘要： PURPOSE:To select and receive a desired broadcast station by comparing the intensity of radio waves which are being received, judging whether the frequency of the radio wave which is being received coincides with that of a designated station, and controlling whether the radio wave is to be received continuously or not. CONSTITUTION:When an NHK the first selecting button 10J is pushed, a signal is sent to a microcomputer controlling circuit 70 from a radio operating part 10. From the circuit 70, a signal is sent to a tuning voltage generating circuit 6, and when a voltage of the circuit 6 is varied, a tuning frequency and a local oscillation frequency of a tuning circuit 2 are varied simultaneously. The local oscillation frequency sends a signal to the circuit 70 through an amplifying circuit 8. The circuit 70 judges whether the local oscillation frequency which is being operated corresponds to a receiving frequency of the NHK the first or not. When it corresponds, when a receiving level sent simultaneously from a receiving radio wave level deciding circuit 5 exceeds a prescribed value, the reception is continued by fixing a receiving frequency. In such a way, the broadcast station can be selected by one operation of a selecting button of a broadcast station which a user desires to listen to.

7. 发明专利

JPS56141606A ANTENNA CIRCUIT OF RADIO RECEIVER 失效
公开(公告)号：JPS56141606A
公开(公告)日：1981-11-05
申请号：JP4633280
申请日：1980-04-08
申请人： MITSUBISHI ELECTRIC CORP
发明人： OKAMOTO HARUKI , MITSUI HIDEO
IPC分类号： H01Q23/00 , H04B1/18 , H04B1/40
摘要： PURPOSE:To negate a reactance component of the antenna against an FM signal extending over a wide band, and elevate the receiving sensitivity, by suitably selecting the length of a feeder for AM use, in the circuit which has connected two feeders for both AM and FM use, to one antenna. CONSTITUTION:This circuit is constituted of a vertical pole antenna 1, an AM feeder 2 and an FM feeder 3, and as for these feeders 2, 3, two coaxial lines coated with the sheathed inside conductors 4, 4' form a cable 5 in one body. To this cable 5 are connected a distribution branching filter 9 and a compound branching filter 12. An AM signal which has been received by the antenna 1 is cut off by the capacitors 8, 11, passes through the feeder 2, and on the other band, an FM signal is cut off by the coil 10, passes through the feeder 3, and they are input to the plug 6. According to this constitution, when electric length of the antenna 1 and electric length l1 of the feeder 2 one regulated to (l) and (l+lambda n/2), respectively, a reactance component of the antenna 1 against the FM signal is negated extending over a wide band. In this way, the receiving sensitivity of AM and FM signals is elevated.

8. 发明专利

JPS5614729A IMPULSIVE NOISE SUPPRESSING CIRCUIT OF AM RECEIVER 失效
公开(公告)号：JPS5614729A
公开(公告)日：1981-02-13
申请号：JP9122679
申请日：1979-07-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： MITSUI HIDEO
IPC分类号： H04B1/10
摘要： PURPOSE:To eliminate the discontinuance of a reproduced signal by inserting pulses in a fixed waveform in a period when a demodulated signal is cut off by a gate method. CONSTITUTION:Noise detecting circuit 10 generates differential pulse (b) in accordance with a noise pulse. This differential pulse (b) is supplied to pulse generating circuit 11, which generates fixed pulse signal (c). This pulse signal (c) is supplied to pulse generating circuit 12 and also to delay circuit 14.A signal amplified by amplifier 1, on the other hand, is applied to gate circuit 3 by way of delay circuit 2 to obtain signal (g) that has a part, including a noise component, removed. Since signal (h) obtained by sampling the above-mentioned signal (g) at its leading edge and trailing edge appears at the output of gate circuit 7, this is supplied to mean- value signal generating circuit 8 to generate averaged pulses, which are inserted as a supplement signal into the part that has the signal removed.

9. 发明专利

JPH0731843B2 失效
公开(公告)号：JPH0731843B2
公开(公告)日：1995-04-10
申请号：JP21633986
申请日：1986-09-12
申请人： MITSUBISHI ELECTRIC CORP
发明人： MITSUI HIDEO
IPC分类号： G11B15/02 , G11B15/10 , G11B33/10

10. 发明专利

JPH0364130A AUTOMOBILE RADIO WITH PLAYBACK FUNCTION 失效
公开(公告)号：JPH0364130A
公开(公告)日：1991-03-19
申请号：JP19802189
申请日：1989-08-01
申请人： MITSUBISHI ELECTRIC CORP
发明人： MITSUI HIDEO
IPC分类号： G11B31/00 , H04B1/16
摘要： PURPOSE:To reproduce the content of other commercial broadcast broadcasting while listening to traffic information and to listen to it thereafter by selecting a ratio between sound recording speed and reproduction speed to be less than the unity when stored information is reproduced. CONSTITUTION:When a playback switch 8 is closed after listening to required traffic information, an output changeover switch 10 is thrown to the position of a D/A converter 6, a voice signal by 8sec stored in a digital memory 5 is read and outputted from a speaker 12 via the D/A converter 6 and an AF amplifier 11. Then the ratio of sound recording speed and reproduction speed at the reproduction thereafter is controlled to be smaller than the unity, the reproduction speed is increased and the timewise delay between a reproduction signal and a signal of a current broadcast is eliminated, resulting that the playback switch 8 is opened when both the signals are coincident. Thus, it is possible to reproduce the content of the other commercial broadcast broadcasting while the traffic information is listened to is reproduced and listened to again.

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