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1. 发明专利

JP2001045430A VIDEO RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JP2001045430A
公开(公告)日：2001-02-16
申请号：JP21632999
申请日：1999-07-30
申请人： HITACHI LTD
发明人： YATSUGI FUMISHIGE , SHIMIZU HIROSHI
IPC分类号： H04N5/765 , H04N5/232 , H04N5/262 , H04N5/781 , H04N5/91
摘要： PROBLEM TO BE SOLVED: To attain rendering such as special effects altogether by superimposing a code denoting a special effect onto a reproduced video signal after photographing is finished in the case of using a video recording and reproducing device that records digitally encoded signals resulting from a photographed moving picture video image. SOLUTION: A system control microcomputer section 13 reads a 'FADE- CONT' file from a DVD-RAM 1 and stores it in a buffer area together with a 'RTR.IFO' file. A serial number is given to all moving picture cuts and VOBs in the 'RTR.IFO' file. Then the necessity of applying a fade effect to a displayed image of moving picture data read at present is discriminated at a prescribed time by comparing a VOB number for requiring fading in attribute data in the 'FADE-CONT' file with that in the 'RTR.IFO' file. when the discrimination of the VOB number indicates the necessity of fading, the system control microcomputer section 13 gives an instruction of a FADE effect to a microcomputer 10.

2. 发明专利

JPH11176083A IMAGE FOUND RECORDING/REPRODUCING DEVICE 失效
公开(公告)号：JPH11176083A
公开(公告)日：1999-07-02
申请号：JP34331397
申请日：1997-12-12
申请人： HITACHI LTD
发明人： IMAI TSUTOMU , CHIBA HIROSHI , YATSUGI FUMISHIGE
IPC分类号： H04N5/91 , G11B20/10 , H04N5/92 , H04N7/24 , H04N19/00 , H04N19/48 , H04N19/70 , H04N19/85
摘要： PROBLEM TO BE SOLVED: To realize a file division almost not using a work area by dividing and processing a file with a GOP header or an AAU header and making the open part of a cluster a padding. SOLUTION: The size from the GOP header 902 to a rift 903 of cluster is obtained, and the length of a padding packet attached to the top of a file B is calculated, and a padding header and a system header are attached to the top 907 of the file B. Then, the size of the padding packet length is made to be a the padding packet. The part up to the rift 903 of cluster of a retrieved file A is copied to the file B, and the part after the rift of cluster is attached to the file B by revising arrangement information. The video packet length, the time stamp, etc., of the top of the file B are revised, a part after the GOP header 902 of the file A is cut off, finally, a sequence end and an end code are attached and the file A and the file B after the division are completed.

3. 发明专利

JPH10116401A MAGNETIC RECORDING/REPRODUCING DEVICE 失效
公开(公告)号：JPH10116401A
公开(公告)日：1998-05-06
申请号：JP29271497
申请日：1997-10-24
申请人： HITACHI LTD
发明人： YAMAUCHI HIROTO , YATSUGI FUMISHIGE
IPC分类号： G11B5/027 , G11B5/02
摘要： PROBLEM TO BE SOLVED: To keep the recording current to an optimum value regardless of the change of ambient temp. in a magnetic recording/reproducing device by which plural information signals are classified in the thickness direction and superpasedly recorded by providing an amplitude control circuit for controlling the recording current supplied to a magnetic head. SOLUTION: A recording FM signal outputted from a recording signal processing circuit 20 is inputted to the amplitude control circuit 30, and the amplitude control circuit 30 changes the amplitude of a video recording signal according to the ambient temp. to control the recording current flowing through the magnetic head 60. For instance, when the ambient temp. is raised, and the video recording current is raised, the circuit 30 brings the video recording current close to the optimum value by reducing the video recording current by change much of an optimum recording current according to the rise of the ambient temp., and prevents a change in a regenerative sound FM output voltage. Thus, since the level value of the recording current is set in the optimum value always regardless of the change in the ambient temp., a regenerative signal with an excellent regenerative characteristic having an excellent S/N ratio is obtained.

4. 发明专利

JPH08327976A IMAGE DISPLAY DEVICE 失效
公开(公告)号：JPH08327976A
公开(公告)日：1996-12-13
申请号：JP13634695
申请日：1995-06-02
申请人： HITACHI LTD , HITACHI VIDEO IND INF SYST INC
发明人： TSUKADA TAKEO , NAGAYAMA KEIJI , FUKUDA HIROKI , YATSUGI FUMISHIGE , TOMIOKA YASUHIRO
IPC分类号： G02F1/133 , G09G3/18
摘要： PURPOSE: To automatically make a back light put out after a fixed timer has elapsed when the back light is lighted and to save the power by integrating a function automatically putting on or putting out the back light. CONSTITUTION: An operation reception circuit 4 receives the data from an operation button 1 or a remote control light receiving part 3 to bring a device into a reproducing mode. A counter function part 5 receives the signal of the reproduction start of the operation reception circuit 4 to start count, and turns on a switch circuit 8. A power feeding circuit 7 receives the signal of the turning-on of the switch circuit 8, and supplys power to the back light 10 to light up it. At this time, the counter function part 5 starts the count from the point of time receiving the signal of the reproduction start of the operation reception circuit 4, and makes the number of counts increase with the passing of the time. Further, the part 5 compares the number of counts with a data value beforehand written in a memory 6, and turns off the switch circuit 8 when the number of counts reaches the data value in the memory 6 to put out the back light.

5. 发明专利

JP2542070B2 失效
公开(公告)号：JP2542070B2
公开(公告)日：1996-10-09
申请号：JP32805488
申请日：1988-12-27
申请人： HITACHI LTD
发明人： NISHIJIMA HIDEO , OKAMOTO CHIKAYUKI , WATANABE KATSUYUKI , YATSUGI FUMISHIGE
IPC分类号： H04N5/7826 , G11B5/588 , G11B15/467 , G11B15/473 , G11B20/20

6. 发明专利

JPH07143518A MAGNETIC RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH07143518A
公开(公告)日：1995-06-02
申请号：JP28931993
申请日：1993-11-18
申请人： HITACHI LTD , HITACHI VIDEO & INF SYST
发明人： TABATA AKIFUMI , WATANABE KATSUYUKI , ONO KOICHI , YATSUGI FUMISHIGE , OTSUKA SUSUMU
IPC分类号： H04N5/922 , H04N9/80
摘要： PURPOSE:To enable satisfactory time base correction even in the case of reproduction at high-speed as several tens or several hundreds times of high as the recording speed of two kinds of recording modes, a standard mode and a wide band mode having different carrier frequencies of an FM modulated luminance signal. CONSTITUTION:A time base correcting circuit 15 performs time base correction to a reproduced signal from a magnetic tape 3 at the time of high-speed reproduction, the FM modulated luminance signal in that regenerative signal is processed by a luminance signal processing circuit 29, and the luminance signal of a base band is provided at an output terminal 35. The FM modulated luminance signal processed by an FM equalizing circuit 27 of the luminance signal processing circuit 29 is supplied to a mode discriminating circuit 28 and corresponding to the difference of the carrier frequency, the standard and wide band modes are discriminated. A horizontal synchronizing signal for time base correction processing is detected from the reproduced signal by a synchronizing signal detection circuit 18 but the characteristics of this synchronizing signal detection circuit 18 is switched so as to match the respective recording modes corresponding to a mode discriminate signal from the mode discriminating circuit 28.

7. 发明专利

JPH06150538A MAGNETIC RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH06150538A
公开(公告)日：1994-05-31
申请号：JP30247392
申请日：1992-11-12
申请人： HITACHI LTD
发明人： YATSUGI FUMISHIGE , WATANABE KATSUYUKI
IPC分类号： G11B5/035 , G11B5/02 , G11B20/02 , G11B20/06 , G11B20/16 , H04N5/93
摘要： PURPOSE:To optimize an equalizer characteristic by heightening a peak point frequency in an amplitude frequency characteristic when the amplitude of a reproduced signal is higher than a standard reproduced value and lowering the peak point frequency when lower. CONSTITUTION:The reproduced FM signal obtained from a magnetic tape 1 and a magnetic recording and reproducing head 2 is amplified to a level capable of signal processing by a preamplifier 3. The FM signal is inputted to an HPF 4, and the dependency of the amplitude of the regenerative FM signal for an FM carrier frequency is canceled. Then, a DC voltage in proportion to the amplitude of the regenerative FM signal is taken out by an envelope detection circuit 5, and the peak value of the equalizer characteristic is controlled. At this time, the peak point frequency in the amplitude frequency characteristic is lowered when the amplitude of the regenerative signal is higher than the standard reproducing value, and the peak point frequency is heightened when the amplitude of the regenerative signal is lower than the standard reproducing value. Then, the optimum equalizer characteristic is obtained since the peak frequency of the equalizer characteristic is varied according to a reproduced output.

8. 发明专利

JPH0574123B2 失效
公开(公告)号：JPH0574123B2
公开(公告)日：1993-10-15
申请号：JP24740786
申请日：1986-10-20
申请人： HITACHI LTD
发明人： YATSUGI FUMISHIGE , TOEDA HIROSHI , TAKAMYA MASASHI
IPC分类号： G11B5/027 , H04N5/93

9. 发明专利

JPH04207376A VIDEO SIGNAL RECORDING AND REPRODUCING DEVICE WITH PCM SOUND 失效
公开(公告)号：JPH04207376A
公开(公告)日：1992-07-29
申请号：JP32910290
申请日：1990-11-30
申请人： HITACHI LTD
发明人： YATSUGI FUMISHIGE , USUDA YUKISHIGE
IPC分类号： H04N5/91 , G11B20/00
摘要： PURPOSE:To facilitate the arbitrary formation of the character video signals corresponding to character codes by providing an ID code decoder which extracts character information to the ID code output of a PCM data signal processing circuit of a reproduction system and adding the output thereof to a character pattern generating circuit, thereby forming video information. CONSTITUTION:The identification code(ID code) which is the additive information of a reproduced sound signal and video signal is divided into the code indicating the state at the time of PCM sound recording and the code indicating the character information by an ID code decoder 6. The code indicating the recording state is outputted to a microcomputer 12 for control and controls the reproducing state of a VTR and is displayed on the outside of the VTR. The code indicating the character information is rearranged in order of the codes by the 6 and is added to a character pattern generating circuit 7, from which the character information as the video signal is taken out. The character signal is added by a superimposing circuit 11 which superposes character signal on the reproduced video signal. The character signal is arbitrary displayed on a screen in this way only when a user requires the character information.

10. 发明专利

JPH04188990A YC SEPARATION CIRCUIT 失效
公开(公告)号：JPH04188990A
公开(公告)日：1992-07-07
申请号：JP31593790
申请日：1990-11-22
申请人： HITACHI LTD
发明人： TOOTAKE YASUHIRO , YATSUGI FUMISHIGE , YAMAUCHI HIROTO
IPC分类号： H04N9/78
摘要： PURPOSE:To make the equipment inexpensive and to miniaturize it by digitizing BPF and performing YC separation in the same circuit in the two systems, NTSC and PAL. CONSTITUTION:A band pass filter(BPF) 11 is a non-cyclic type digital filter composed of 4 delay elements D 50, three factor devices 51 and an adder 52. When an input clock frequency is selected to integral multiple of the color sub-carrier frequency 3.58MHz of NTSC, this BPF 11 separates the color signal of NTSC signal from input composite signal. When the input clock frequency is selected to integral multiple of the chrominance sub-carrier frequency 4.43MHz in PAL system, the BPF 11 separates the chrominance signal of PAL signal from input composite signal. Thus, the providing of each YC separation circuit for each composite signal in the two systems, NTSC and PAL, is unnecessary and the inexpensive and miniaturized equipment is obtained.

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