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1. 发明专利

JPH07225902A MAGNETIC RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH07225902A
公开(公告)日：1995-08-22
申请号：JP1806994
申请日：1994-02-15
申请人： HITACHI LTD , HITACHI VIDEO & INF SYST
发明人： MARUYAMA AKIHIKO , TSUKADA TAKEO , FUJIWARA NAOKI , MIZOGUCHI KENJI , TAMURA AKIRA , HOJO KEN , FUKUDA HIROKI , TSUKAMOTO TOSHIHIKO
IPC分类号： H04N5/7826 , G11B5/008 , G11B5/027 , G11B5/53 , H04N5/91 , H04N9/84
摘要： PURPOSE:To record and reproduce plural video signals at the same time by possessing a rotary head drum arranged with an m heads (m>=2) at equal intervals having each set of two heads opposite to each other by 180 deg.. CONSTITUTION:Head output signals of video heads 10A, 10B and 10C are outputted in turn from a video head changeover circuit 8 to an amplifier circuit by a video head changeover signal outputted from a servo circuit 3. The amplified head output signals are inputted to a video signal processing circuit. Then, the head output signals processed to be video signals by the video signal processing circuit are outputted to a video signal output circuit. In this case, plural video signals can simultaneously be recorded and reproduced by one device with one magnetic tape without detriment to the interchangeability with the conventional magnetic recording and reproducing device.

2. 发明专利

JPH06326913A CAMCODER WITH MULTI-FUNCTION ZOOM KEY 失效
公开(公告)号：JPH06326913A
公开(公告)日：1994-11-25
申请号：JP10907093
申请日：1993-05-11
申请人： HITACHI LTD , HITACHI VIDEO & INF SYST
发明人： TSUKAMOTO TOSHIHIKO , TSUKADA TAKEO
IPC分类号： H04N5/225 , H04N5/232
摘要： PURPOSE:To provide a zoom key with a multi-function to obtain a zooming function and a reproducing function by inputting signals generated by a zoom key and a record temporary stop key to a microcomputer in a CAMCODER. CONSTITUTION:When the record temporary stop button 1 is depressed, a switch 3 is turned on, and when the zoom key 2 is depressed, switches 4, 5 are independently turned on. Signals from the three switches 3 to 5 are inputted to the microcomputer 6 to judge the three input states of the switches 3 to 5. The reproducing function can be obtained by pressing both the ends of the key 2 and the microcomputer 6 switches the key 1 to a reproducing/stop function and switches the key 2 to fast-feeding and rewinding. In the priority order of the switches 3 to 5 when the microcomputer judges reproduction, the switch 3 is stopped when either one of the switches 4, 5 is depressed fast and reproduction, and release are repeated in each depression of the switch. Provided that when a stopped state is continued for 5 minutes or more, the reproducing function is released.

3. 发明专利

JPH05103254A CAMCORDER 失效
公开(公告)号：JPH05103254A
公开(公告)日：1993-04-23
申请号：JP26354791
申请日：1991-10-11
申请人： HITACHI LTD , HITACHI VIDEO & INF SYST
发明人： TSUKAMOTO TOSHIHIKO , SATO TAKASHI , TSUKADA TAKEO
IPC分类号： G01H1/00 , H04N5/232 , H04N5/765 , H04N5/782
摘要： PURPOSE:To detect a large vibration generated while moving with a camcorder in a hand, and to prevent a useless recording or the consumption of a battery due to forgetting to press a temporary stop button, or a misoperation at the time of recording. CONSTITUTION:A vibration detecting mechanism 1 is attached to the top end of the camera with integrated VTR, and a vibration detection signal is inputted to a microcomputer 4 so that the movement with the camera with integrated VTR in a hand can be judged. Thus, the forgetting to press the temporary stop button, or the misoperation at the time of recording can be prevented, and the useless recording and the consumption of the battery can be prevented.

4. 发明专利

JPH0581837A VTR INTEGRAL CAMERA WITH PRINTING FUNCTION 失效
公开(公告)号：JPH0581837A
公开(公告)日：1993-04-02
申请号：JP24107691
申请日：1991-09-20
申请人： HITACHI LTD , HITACHI VIDEO & INF SYST
发明人： SATO TAKASHI , TSUKAMOTO TOSHIHIKO , TAMURA AKIRA , MOTOKI SATORU
IPC分类号： G11B27/28 , G11B23/38 , H04N5/765 , H04N5/782
摘要： PURPOSE:To make arranging and editing easier without attaching an index label by providing a printing device constituted of a printing head and an ink ribbon on the back part of a video cassette and printing a date, time, the title of a photographing content, etc. CONSTITUTION:The character signal of the data and the title of the date of photographing, time, etc., is generated inside the camera, superimposed with a video signal, displayed on a screen and recorded on a tape. And at the same time, the character signals of them are sent to a printing head operation circuit and the printing device constituted of a printing head 1 and an ink ribbon 2 provided on the back part of a cassette case attached to the inside of the deck is operated. By this operation, the above-mentioned date, the time and the title are printed on a part for attaching an index label at the back surface of a case 4. Thus, without attaching the index label, the arranging and the editing are made easier.

5. 发明专利

JPH09214814A VIDEO CAMERA 失效
公开(公告)号：JPH09214814A
公开(公告)日：1997-08-15
申请号：JP1723696
申请日：1996-02-02
申请人： HITACHI LTD , HITACHI VIDEO IND INF SYST INC
发明人： MARUYAMA AKIHIKO , MIZUTANI KEIICHI , TSUKAMOTO TOSHIHIKO
IPC分类号： H04N5/225 , H04N5/66
摘要： PROBLEM TO BE SOLVED: To display an easy-to-observe image on a view finder without being affected by surrounding light by providing a back light emission amount control means that changes automatically the light emission amount of a back light depending on the surrounding lightness. SOLUTION: A video signal processed by a digital signal processing circuit 3 is fed to a main control circuit 4 consisting mainly of a microprocessor. The main control circuit 4 acquires information of the lightness of an object based on a mean level of a video signal and applies feedback control to an aperture 1b of a lens section 1 so as to bring the video signal to a prescribed level. The main control circuit 4 acquires the surrounding lightness based on the video signal to control the light emission amount of the back light of the view finder and uses a luminance sensor 10 to acquires luminance information of a display image on a liquid crystal display panel 7. Then the main control circuit 4 obtains proper light emission amount information of the back light based on the information sets above and controls an output voltage of an inverter 5 to change the light emission amount of a fluorescent tube 6.

6. 发明专利

JPS62209990A SERVO CONTROL OSCILLATION CIRCUIT 失效
公开(公告)号：JPS62209990A
公开(公告)日：1987-09-16
申请号：JP5135486
申请日：1986-03-11
申请人： HITACHI LTD , HITACHI VIDEO ENG
发明人： TSUKAMOTO TOSHIHIKO , KUDO HIROSHI
IPC分类号： H04N9/64 , H04N9/65
摘要： PURPOSE:To stabilize the operation of a VCO by applying on/off control periodically to the oscillation of a voltage controlled variable frequency oscillation circuit (VCO). CONSTITUTION:The VCO 3 uses a control pulse SCB from an input terminal 14B to apply on/off control of its oscillation in a servo control oscillation circuit 12B. The control pulse SCB consists of a pulse PB at a high level for a prescribed period including a sampling pulse SP in the vertical blanking period VBLK and a pulse PB' at a high level during each other line including a video line LB of a B-Y signal. The VCO 3 is oscillated during a high level period of the control pulse SCB and the oscillation is stopped at a low level period. The phases of reference pulses Sb at the leading point of time of the pulse PB of the control pulse SCB are set so that they are always equal at all the vertical blanking periods VBLK, the VCO 3 stops the oscillation at a low level period of the control pulse SCB at the low level period of the control pulse SCB and starts the oscillation at the leading from the low to the high level, and the phase of an output signal VR-Y is always kept constant at the oscillation start point of time.

7. 发明专利

JPH07336569A CAMCORDER WITH FIELD ANGLE INSTANTANEOUS SWITCHING FUNCTION 失效
公开(公告)号：JPH07336569A
公开(公告)日：1995-12-22
申请号：JP12607294
申请日：1994-06-08
申请人： HITACHI LTD , HITACHI VIDEO ENG
发明人： TSUKAMOTO TOSHIHIKO , MIZOGUCHI KENJI , TAMURA AKIRA
IPC分类号： H04N5/225
摘要： PURPOSE:To easily find out a lost object by using optical zooming and electronic zooming in mixture and selecting the 'wide angle' mode without electronic zooming for a sight of an electronic view finder instantaneously at any time. CONSTITUTION:When a button 'T' of a zoom button 7 is depressed while the 'M X' is selected by a zoom setting button 10, for example, a zoom lens 1 is in operation in the 'telescopic' mode and the video signal of optical zooming is fed to a recording and reproducing device 17 via a D/A converter 14 till the optical zooming reaches its maximum state, and the video signal magnified further by an electronic zoom circuit 12 is fed to the recording and reproducing device 17 at the magnification over it. In both the cases, the same video signal is fed to an electronic view finder (EVF) 18. When a field angle changeover button 19 is operated, since the output of the D/A converter without electronic zooming is fed to the EVF 18, the sight is obtained as if the 'wide angle' mode were selected.

8. 发明专利

JPH0479578A INTEGRATED TYPE VTR CAMERA 失效
公开(公告)号：JPH0479578A
公开(公告)日：1992-03-12
申请号：JP19052290
申请日：1990-07-20
申请人： HITACHI LTD , HITACHI VIDEO ENG
发明人： TSUKAMOTO TOSHIHIKO , MARUYAMA AKIHIKO , SATO TAKASHI , TAMURA AKIRA
IPC分类号： H04N5/225
摘要： PURPOSE:To prevent a battery being consumed wastefully and to solve innconvenience such as turning on and off a light by synchronizing the lighting of the light with the temporary stopping operation of a VTR, and attaching time difference by setting the lighting time of the light when starting recording at early stages, and putting it off with delay after the recording is completed. CONSTITUTION:When a switch 8 is turned on and a low level is inputted to a microcomputer 5, the microcomputer 5 supplies a signal to turn on a switch 4 by the above input, and input from a temporary stopping button 9 is prohibited, and the lighting and turning off of the light 3 is performed only by operating a manual switch 1. Thence, when the switch 8 is turned off, a signal from the temporary stopping switch 9 is accepted, since the operation of the switch 4 is synchronized with that of the temporary stopping switch 9, the manual switch 1 is operated. Therefore, the lighting and turning off of the light 3 can be controlled by the temporary stopping switch 9. Thereby, it is possible to prevent the battery being consumed wastefully, and to solve the inconvenience such as to turn the light 3 on and off.

9. 发明专利

JPS5168148A Keisankideetanyuryokuhoho 失效
公开(公告)号：JPS5168148A
公开(公告)日：1976-06-12
申请号：JP14160274
申请日：1974-12-11
申请人： Unitika Ltd , Hitachi Ltd
发明人： OKADA TAKUJI , TSUKAMOTO TOSHIHIKO , SAKAMOTO JUJI , WATANABE TSUYOSHI , USUI TOSHIO
IPC分类号： G06F3/02 , G06F3/00 , G06F3/05 , G06F17/40

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