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1. 发明专利

JP3546434B2 Video signal reproducing apparatus 失效
公开(公告)号：JP3546434B2
公开(公告)日：2004-07-28
申请号：JP5657693
申请日：1993-02-22
申请人：ソニー株式会社
发明人：由佳及川
IPC分类号： G11B15/467 , G11B5/008 , G11B5/53 , G11B15/12 , G11B15/18 , H04N5/782 , H04N5/7826 , H04N5/783 , H04N5/919 , H04N5/92 , H04N7/52 , H04N9/804 , H04N9/888 , H04N9/896 , H04N21/236 , H04N21/432 , H04N21/434
CPC分类号： H04N21/236 , G11B5/00878 , G11B5/53 , G11B15/125 , G11B15/1875 , G11B15/467 , H04N5/78263 , H04N5/78266 , H04N5/783 , H04N5/919 , H04N9/8047 , H04N9/888 , H04N9/896 , H04N19/85 , H04N21/4325 , H04N21/434

2. 发明专利

JP2925214B2 失效
公开(公告)号：JP2925214B2
公开(公告)日：1999-07-28
申请号：JP1397690
申请日：1990-01-24
申请人： KYANON KK
发明人： UDAGAWA YOSHIRO , MYAMOTO RYOSUKE , YAMAGATA SHIGEO , NAKAZATO SABURO , MISUMI HIROYOSHI
IPC分类号： H04N5/92 , G11B15/18 , G11B20/12 , G11B23/087 , G11B23/36 , G11B27/031 , G11B27/11 , G11B27/32 , H04N1/21 , H04N5/77 , H04N5/7826 , H04N5/919 , H04N5/926 , H04N9/877

3. 发明专利

JPH07153003A METHOD AND APPARATUS FOR RECORDING/REPRODUCING VIDEO SIGNAL 失效
公开(公告)号：JPH07153003A
公开(公告)日：1995-06-16
申请号：JP30068993
申请日：1993-11-30
申请人： SONY CORP
发明人： TAKAHASHI MITSUNORI , SADO TOSHIYUKI
IPC分类号： H04N5/7826 , G11B5/008 , G11B5/02 , G11B5/53 , G11B15/12 , G11B15/473 , G11B20/00 , G11B20/02 , G11B27/00 , H04N5/77 , H04N5/919 , H04N5/92
摘要： PURPOSE:To obtain a VTR usable with a high permeability by reducing noise and decreasing power consumption. CONSTITUTION:Number of revolutions of a rotary drum 2 is reduced by half without altering a diameter of the drum 2 and without altering a winding angle of a magnetic tape 4 on the drum 2, and number of magnetic heads disposed on the drum 2 is doubled. Further, a recording data rate of a video signal is doubled at a time base and recorded. Since the number of revolutions of the drum 2 is reduced by half, noise is reduced, and power consumption of a driving system such as a motor for rotatably driving the drum 2 is lowered. Further, since the rate is reduced, magnetic head characteristics of high permeability can be used.

4. 发明专利

JPH07501170A 失效
公开(公告)号：JPH07501170A
公开(公告)日：1995-02-02
申请号：JP50184694
申请日：1993-04-01
IPC分类号： G11B7/007 , G11B7/003 , G11B20/10 , H04N5/84 , H04N5/919 , H04N5/92

5. 发明专利

JPH06197313A MAGNETIC RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH06197313A
公开(公告)日：1994-07-15
申请号：JP28233092
申请日：1992-09-28
申请人： VICTOR COMPANY OF JAPAN
发明人： KOBAYASHI KAORU , SHIBAYAMA TAKECHIKA
IPC分类号： H04N5/92 , H04N5/919 , H04N5/937
摘要： PURPOSE:To allow a conventional home use VTR tape head system to record and reproduce a high definition video signal. CONSTITUTION:A high definition video signal bb relating to a broadcast system different from a conventional broadcast system having much information quantity than that of a conventional broadcast system video signal aa is recorded on a magnetic tape T through 1st-4th recording processing circuits 26-29 and FM modulators 30-33, etc., while being in quadri-secting by using 1st-8 memories 10-17. In the reproduction mode, the signals quadri-secting by using FM demodulators and 1st-4th regenerative signal processing circuits, etc., are reproduced and a high definition video signal bb is generated by using the 1st-8 memories 10-17.

6. 发明专利

JPH0477072A RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH0477072A
公开(公告)日：1992-03-11
申请号：JP18907290
申请日：1990-07-16
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SAKAUCHI TATSUJI , SHIBATA HIDEAKI , OTSU MASAMITSU , OKAMOTO HIROSHI
IPC分类号： G11B15/12 , G11B15/14 , G11B15/18 , G11B20/12 , G11B27/02 , G11B27/032 , G11B27/036 , H04N5/782 , H04N5/7826 , H04N5/919 , H04N9/797 , H04N9/802 , H04N9/804
摘要： PURPOSE:To prevent disturbance of a video signal and an audio signal at an edit point even in the case of narrow track recording by forming a non- recording track over a boundary track for a prescribed length adjacent to recording tracks in the track lengthwise direction and recording respective signals on completely independent areas on a recording medium. CONSTITUTION:Tracks consist of non-recording tracks 1,3, 37 sets of video recording subtracks 6-10 on which video signals of one frame are recorded and audio recording subtrack 2 for four channel audio signals for one field period each and the signals are recorded while being separated by the non- recording tracks at a prescribed length in the track lengthwise direction. When the video signal and the audio signal are recorded on a recording medium, the video signal in the unit of minimum edit and the audio signal in the unit of minimum edit are recorded on an independent area on a recording pattern and the recording track for the audio signal is widened by using the non- recording track area. Thus, even in the presence of discontinuity of a track center in the audio recording track caused in the case of audio signal insert edit, the effect is reduced more than the case with the same recording track width as that for the video signal.

7. 发明专利

JPH02250578A VIDEO SIGNAL REPRODUCTION PROCESSING CIRCUIT 失效
公开(公告)号：JPH02250578A
公开(公告)日：1990-10-08
申请号：JP7337189
申请日：1989-03-24
申请人： SONY CORP
发明人： KANEKO SHINJI
IPC分类号： H04N5/92 , G11B20/02 , H03M1/10 , H04N5/16 , H04N5/919 , H04N5/922 , H04N5/931
摘要： PURPOSE:To faithfully reproduce a high-definition TV signal by making use of the conversion characteristics of an A/D converter to compensate the characteristics of a demodulated signal and compensating the level difference and the linearity difference between the channels of a reproduction system. CONSTITUTION:A reference frequency signal REFIN including the frequencies f1-f3 corresponding to the 0%, 50% and 100% signal levels of a reference video signal respectively is put into a reproduced RF video signal PBIN via a switch circuit 11. Then the three-point compensation is given to the conversion characteristics of an A/D converter 14 with the demodulation output produced by an FM demodulation circuit 12 to a reference frequency signal PBIN. As a result, a demodulation processing system consisting of the FM modulation circuit 12, an amplifier 13, and the A/D converter 14 can totally compensate the signal levels and the linearity. Thus the signal level difference and the linearity difference are never produced between the channels of a reproduction system. In such a way, the reproduced video signals of high definition can be obtained.

8. 发明专利

JPS6146681A Recording and reproducing method of video signal 失效
标题翻译：视频信号的记录和再现方法
公开(公告)号：JPS6146681A
公开(公告)日：1986-03-06
申请号：JP16824584
申请日：1984-08-11
申请人： Matsushita Electric Ind Co Ltd
发明人： SAKAUCHI TATSUJI , CHIBA MITSUO
IPC分类号： G11B20/02 , G11B5/027 , G11B20/18 , G11B20/22 , H03G3/20 , H04N5/20 , H04N5/91 , H04N5/919 , H04N5/92 , H04N5/93 , H04N5/931
CPC分类号： H03G3/20 , G11B20/182 , G11B20/22 , H04N5/919 , H04N5/931 , H04N5/9315
摘要： PURPOSE: To prevent a deterioration in a reproduced picture quality such as contraction of white or black pattern and change in line crawling frequency characteristic by correcting automatically nonlinear distortion, gain fluctuation or DC fluctuation of a recording and reproducing device.
CONSTITUTION: A reproduced time axis expanding video signal is inputted to an input terminal 17 and a reproduce ramp signal within a vertical blanking period is inputted, then an address signal is outputted from an address generator 21 synchronously therewith. A reference ramp signal is outputted from a reference index signal generator 19 according to the said address signal and a subtractor 18 takes a level difference between the two signals. The level difference is stored in a storage device 20 to store a level correcting value corresponding to each reproducing level of the reproduced video signal. The level correcting value is read from the storage device 20, it is added with a reproducing time axis expanding reproduction signal at an adder 22 and a level correcting time axis expanding video signal is outputted from an output terminal 23.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：通过校正记录和再现装置的自动非线性失真，增益波动或DC波动来防止再现的图像质量的劣化，例如白色或黑色图案的收缩和线爬行频率特性的变化。构成：将再现的时间轴展开视频信号输入到输入端17，并输入垂直消隐期间内的再生斜坡信号，与地址发生器21同步地输出地址信号。参考斜坡信号根据所述地址信号从参考索引信号发生器19输出，减法器18取两个信号之间的电平差。电平差被存储在存储装置20中以存储对应于再现视频信号的每个再现电平的电平校正值。从存储装置20读取电平校正值，在加法器22中添加再现时间轴扩展再现信号，并从输出端子23输出电平校正时间轴扩展视频信号。

9. 发明专利

JPS60141088A RECORDING AND REPRODUCING DEVICE OF VIDEO SIGNAL 失效
公开(公告)号：JPS60141088A
公开(公告)日：1985-07-26
申请号：JP24745483
申请日：1983-12-28
申请人： VICTOR COMPANY OF JAPAN
发明人： MATSUO YASUTOSHI
IPC分类号： G11B20/02 , G11B5/027 , H04N5/919 , H04N5/92
摘要： PURPOSE:To obtain the high quality of reproduced picture by sampling input video signals independently with two sampling pulse having 180 deg. different phases, by storing them in a pair of tracks independently and adding and synthesizing them after they have been re-sampled with different two sampling pulses reproduced by reverse process at the time of reproducing. CONSTITUTION:Input video signals are separately sampled by the following frequency; it is twice or less upper limit frequency of an input video signal such as a luminance signal, higher than said upper limit frequency, the 1st and 2nd pulses of a sampling frequency fs as the equation shows, and their phases are different by 180 deg.. The 1st and 2nd sampling signals are supplied to recording system video signal processing circuits 5 and 6 independently. Then, after said signals are signal-processed independently, they are supplied to rotational heads 10 and 11, and stored in a magnetic tape 9. Recorded signals are simultaneously reproduced by a pair of rotational heads 10 and 11, and supplied to reproducing system video signal processing circuits 12 and 13. Then they receive the reverse signal processing at the time of recording, and they are converted into a reproduction sampling signal and taken out.

10. 发明专利

JPS57123777A Video signal recording and reproducing device 失效
标题翻译：视频信号记录和再现设备
公开(公告)号：JPS57123777A
公开(公告)日：1982-08-02
申请号：JP885081
申请日：1981-01-23
申请人： Victor Co Of Japan Ltd
发明人： TAKAHASHI TOSHINORI , TAKASHIMA SEIICHI
IPC分类号： H04N5/92 , G11B20/00 , H04N5/919
CPC分类号： H04N5/919
摘要： PURPOSE:To make the speed of multichannel readout lower than that of one- channel readout, and to decrease the frequency of a video signal by reading out a video signal out of solid-state image pickup elements by plural channels. CONSTITUTION:An image pickup device 1 consists of four channel solid image pickup elements 1a-1d. Video signals obtained by the elements 1a-1d are transferred, element by element, by using a clock from a clock-signal generaror 2 to readout to four channels. The frequencies of the video signals are supplied to preamplifiers 3a-3d, where they are amplified and corrected to be supplied to recording circuits 4a-4d. Further, the clock-signal generator 2 supplies a control signal to a recording circuit 4e. Recording circuits 4a-4e modulate and amplify supplied signals to shape waveforms suitable for recording, and supply them to recording heads 5a-5d, thereby recording the signals on a magnetic tape 6.
摘要翻译：目的：使多通道读数的速度低于单通道读数的速度，并通过从多个通道的固态图像拾取元件读出视频信号来降低视频信号的频率。构成：图像拾取装置1由四个通道的固体图像拾取元件1a-1d组成。通过元件1a-1d获得的视频信号通过使用来自时钟信号发生器2的时钟逐个传送到四个通道。视频信号的频率被提供给前置放大器3a-3d，在前置放大器3a-3d处被放大和校正以提供给记录电路4a-4d。此外，时钟信号发生器2向记录电路4e提供控制信号。记录电路4a-4e调制和放大提供的信号以形成适于记录的波形，并将其提供给记录头5a-5d，从而将信号记录在磁带6上。

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