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1. 发明专利

JPH0367742A ON-BOARD VIDEO DEVICE FOR CAR 失效
公开(公告)号：JPH0367742A
公开(公告)日：1991-03-22
申请号：JP20279189
申请日：1989-08-07
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： SHIMIZU YOSHIO , SAKIKAWA TADASHI , SEKIGUCHI TSUTOMU
IPC分类号： B60R11/02 , G11B31/00 , G11B33/02
摘要： PURPOSE:To facilitate the operations of a video device and the exchange of a tape, and make a tape-window visible externally by arranging the video device body at the glove box part of a dashpanel on the assistant seat side in a room. CONSTITUTION:A on-board video device 3, a television 4 for video, and a speaker 5 for video are arranged respectively at the glove box part 2 of a dashpanel 1 on the assistant seat in a room. Necessary apparatuses except the above apparatuses are arranged at places specially not specified such as an audio mounting part 6, etc. Thus, the glove box part 2 is in easy-to-reach place to facilitate the exchange of a tape. The operation of a control button can be made easier, and further a tape-window can be made visible externally.

2. 发明专利

JPH04116590A ON-VEHICLE EQUIPMENT 失效
公开(公告)号：JPH04116590A
公开(公告)日：1992-04-17
申请号：JP23553190
申请日：1990-09-07
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： MIYAZAKI TADASHI , YANAGIBASHI TAKUJI , SAKIKAWA TADASHI
IPC分类号： G09G5/00 , H04N5/44
摘要： PURPOSE:To enjoy an image of specific input mode simultaneously even when an input mode of only a sound signal is reproduced by selecting an input terminal to which a video signal is connected automatically when the input terminal to which the video signal is connected is selected. CONSTITUTION:Whether or not the video output terminal of other on-vehicle equipment to an input terminal B2 is connected is detected by an external equipment connection detecting circuit 3 for the input terminal B2 and the detection result is sent to a microcomputer 4. The microcomputer 4 processes the information and information on the kind of the input terminal according to a flow chart. A video input switching circuit 5 is controlled according to the result and an input to a video processing circuit 6 is switched. The software program of the microcomputer 4 is so written that when the video output terminal is not connected to the input terminal B2, a video input switching circuit 5 is controlled to pass an input signal to an input terminal A1 if the input terminal B2 is selected. Consequently, even when the input mode of only the sound signal is reproduced, the image of the specific input mode is reproduced at the same time.

3. 发明专利

JPH0371798A ON-VEHICLE REPRODUCING DEVICE 失效
公开(公告)号：JPH0371798A
公开(公告)日：1991-03-27
申请号：JP20681089
申请日：1989-08-11
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： SHIMIZU YOSHIO , SAKIKAWA TADASHI , SEKIGUCHI TSUTOMU
IPC分类号： H04R5/02 , B60R11/02 , H04S5/02
摘要： PURPOSE:To locate sound in the middle in a front direction by outputting a sound retarded from a rear speaker by a difference signal between L and R and reproducing a monaural signal such as speech by an actor or a vocal especially from the front center. CONSTITUTION:The sum of electric signals L, R from a front central speaker 8C is formed at an L+R circuit of a synthesis section 2 and reproduced through a power amplifier 7L+R as a monaural signal of L+R. Since the monaural signal is the same in L and R, signals of L, R are cancelled by an L-R circuit of a comparison section 3, then no sound is reproduced from rear speakers 9L, 9R. In this case, the L and R signals are synthesized by the L+R circuit of the synthesis section 2 in the front center and reproduced from the front center speaker 8C. Thus, the sound located in the front center is obtained.

4. 发明专利

DE2853842A1 Electronically tuned receiver with oscillator drift correction - compares output of frequency monitor with stored output at end of channel selection operation to alter code signal 未知
公开(公告)号：DE2853842A1
公开(公告)日：1979-07-19
申请号：DE2853842
申请日：1978-12-13
申请人： HITACHI LTD
发明人： KUROSOWA MICHIAKI , SAKIKAWA TADASHI , HONDO ICHIRO
IPC分类号： H03J5/02 , H03J7/06 , H03J5/00
摘要： The electronically tuned reciever automatically corrects for changes in its local oscillator's frequency caused by variations in ambient temperature, power supply etc. The frequency correction system between a frequency monitor and channel selector has a first memory which holds an output signal of the monitor at the end of a channel selection operation as a reference value. A comparator compares the reference output of this memory with the output of the monitor during reception and alters the channel selector's code signal until the two outputs are the same.

5. 发明专利

JPS6331124B2 失效
公开(公告)号：JPS6331124B2
公开(公告)日：1988-06-22
申请号：JP9666181
申请日：1981-06-24
申请人： HITACHI LTD
发明人： SAKIKAWA TADASHI , PPONDO ICHIRO
IPC分类号： H03J7/18 , H03J1/00 , H03J7/28 , H04B1/16

6. 发明专利

JPS55162620A ELECTRONIC TUNING TYPE RECEIVER 失效
公开(公告)号：JPS55162620A
公开(公告)日：1980-12-18
申请号：JP6990979
申请日：1979-06-06
申请人： HITACHI LTD
发明人： KUROSAWA NAGAAKI , HONDOU ICHIROU , SAKIKAWA TADASHI
IPC分类号： H03J7/18 , H03J7/06 , H04B1/16
摘要： PURPOSE:To enable stabilization of reception frequency, even with ambient temperature and power supply voltage in variation, by correcting the variation of local oscillating frequency. CONSTITUTION:When the local oscillating frequency of the local oscillator 13 of the reception circuit 10 is changed due to change in ambient temperature, the output signal B of the frequency counter 33 is changed to B', the comparison signal of the comparator 53 is in the state of A B, and the channel selection control signal according to the difference is appeared at the output. This signal is fed to the code signal generator 2 via the tuning control signal generator 22. This output changes DC analog value of the D/A converter 24, controls the local oscillator 13, and frequency control is continued until the counter output signal of the counter 33 is in agreement with the content stored in the first memory circuit 511, before the frequency variation in the control loop of the oscillator 13 counter 20 frequency correector 50 channel selector 20, allowing to correct the local oscillating frequency into the frequency before variation.

7. 发明专利

JPH07271809A ON-VEHICLE DISPLAY DEVICE 失效
公开(公告)号：JPH07271809A
公开(公告)日：1995-10-20
申请号：JP6090794
申请日：1994-03-30
申请人： HITACHI LTD , ZANABUI INFORMATICS KK
发明人： YOSHIOKA KEIICHI , FUJIKI SUSUMU , SAKIKAWA TADASHI , NAKAMURA YOICHI , UEDA YOICHI , SAITO TORU , MORITA SHOICHIRO
IPC分类号： G09B29/10 , G01C21/00 , G06F17/30 , G08G1/0969
摘要： PURPOSE:To obtain an on-vehicle display device capable of improving operability for the selection of an item from a menu screen having hierarchical structure by displaying indexes corresponding to an item group in each hierarchy on the menu screen by a display means. CONSTITUTION:Indexes corresponding to an item group in each hierarchy obtained by hierarchically constituting the items of various information are displayed on the menu screen of each hierarchy. When a crew touches any one of selecting items displayed on a display 2, the selected item is detected by a touch panel 3 and display switching processing or item setting processing corresponding to the touched item is executed. Since the indexes corresponding to the item group of each hierarchy are displayed, which hierarchy where the selecting operation is applied at present can easily be grasped and a feeling of safeness can be obtained even in the case of selecting an item from a menu screen with a deep hierarchy.

8. 发明专利

JPS6230542B2 失效
公开(公告)号：JPS6230542B2
公开(公告)日：1987-07-02
申请号：JP6041779
申请日：1979-05-18
申请人： HITACHI LTD
发明人： SAKIKAWA TADASHI
IPC分类号： H03J7/18 , G08G1/09 , H03J7/20 , H04B1/16

9. 发明专利

JPS5816806B2 失效
公开(公告)号：JPS5816806B2
公开(公告)日：1983-04-02
申请号：JP12258878
申请日：1978-10-06
申请人： HITACHI LTD
发明人： SAKIKAWA TADASHI , PPONDO ICHIRO , KUROSAWA MICHIAKI
IPC分类号： H03J5/00 , H03J1/02 , H03J5/02

10. 发明专利

JPS55153433A RADIO RECEIVER 失效
公开(公告)号：JPS55153433A
公开(公告)日：1980-11-29
申请号：JP6041779
申请日：1979-05-18
申请人： HITACHI LTD
发明人： SAKIKAWA TADASHI
IPC分类号： H03J7/18 , G08G1/09 , H03J7/20 , H04B1/16
摘要： PURPOSE:To reduce the cost and to increase the easiness of the operation, by providing the control unit for selection and reception of traffic information station with the automatic tuning function, only when the traffic information reception swtich is ON. CONSTITUTION:The car radio receiver consists of the reception circuit 100, automatic tuning unit 200, traffic information station detecting circuit 300, shoot circuit 400, and control unit 500, and the control unit 500 performs automatic tuning with the operation of the traffic information reception switch 304 and selects the traffic information station and stops and outputs audio output of the radio receiver during the traffic information broadcast time only. That is, when the swtich 304 is ON, the swtich 304 signal is input to the gate 510g to set FF520 and also input to the gate 510S and further input to the automatic tuning sweep circuit 201 via the gate 510t to start sweep. Next, if the trigger signal is detected at the trigger detection circuit 203 during the sweep and only when the traffic information station is detected 301, the output of the gate 510b is at ''H'' to stop the sweep.

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