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1. 发明专利

JPS6367259B2 失效
公开(公告)号：JPS6367259B2
公开(公告)日：1988-12-23
申请号：JP3981982
申请日：1982-03-12
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TOMITA MASAO , TAKEUCHI AKIHIRO , HASHIMA AKIO
IPC分类号： G11B9/06 , G11B21/20

2. 发明专利

JPS62603B2 失效
公开(公告)号：JPS62603B2
公开(公告)日：1987-01-08
申请号：JP8858379
申请日：1979-07-11
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HASHIMA AKIO , KOYAMA ICHIRO
IPC分类号： H03C3/00 , H03B5/02 , H03C3/40

3. 发明专利

JPS6126904A Magnetic recording and reproducing device 失效
标题翻译：磁记录和再现设备
公开(公告)号：JPS6126904A
公开(公告)日：1986-02-06
申请号：JP14643984
申请日：1984-07-13
申请人： Matsushita Electric Ind Co Ltd
发明人： TOMITA MASAO , HASHIMA AKIO
IPC分类号： G11B5/02 , G11B5/008 , G11B5/09
CPC分类号： G11B5/008
摘要： PURPOSE:To improve the quality of sound signals by using an exclusive having a different azimuth from those of a pair of heads which record video signals to record the code modulated sound signals to a guard band and using different heads to reproduce the video and sound signals respectively. CONSTITUTION:The video signals are applied to a terminal 17 and amplified by a recording amplifier 27 via a video signal processing circuit 26 set at the recording side. These amplified video signals are recorded to a magnetic tape through rotary heads 4 and 5. While the sound signals applied to a terminal 28 are amplified by a recording amplifier 30 via a signal processing circuit 29 at the recording side and recorded to the magnetic tape through rotary heads 6 and 7. Heads 4 and 5 are set at adverse azimuth 180 deg. to each other, and heads 6 and 7 have different azimuths from those of heads 4 and 5. Then heads 6 and 7 performs the PCM recording to a guard band between video signal tracks. In a reproduction mode the video signals are reproduced by heads 4 and 5; while the sound signals are reproduced by heads 6 and 7 respectively. This can improve the quality of the sound signals for recording and reproducing.
摘要翻译：目的：通过使用具有与记录视频信号的记录方式不同的方位来提高声音信号的质量，以将代码调制的声音信号记录到保护频带并使用不同的头再现视频和声音信号分别。构成：视频信号通过设置在记录侧的视频信号处理电路26被施加到终端17并被记录放大器27放大。这些放大的视频信号通过旋转磁头4和5被记录到磁带上。当通过记录侧的信号处理电路29，通过记录放大器30放大施加到终端28的声音信号，并将其记录到磁带旋转头6和7.头部4和5被设置在不利的方位角180度。并且磁头6和7具有与磁头4和5的方位不同的方位角。然后磁头6和7对视频信号磁道之间的保护带执行PCM记录。在再现模式中，视频信号由磁头4和5再现; 而声音信号分别由磁头6和7再现。这可以提高用于记录和再现的声音信号的质量。

4. 发明专利

JPS603248B2 失效
公开(公告)号：JPS603248B2
公开(公告)日：1985-01-26
申请号：JP298078
申请日：1978-01-13
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HASHIMA AKIO
IPC分类号： H03J5/24

5. 发明专利

JPS59207793A 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：JPS59207793A
公开(公告)日：1984-11-24
申请号：JP8203683
申请日：1983-05-10
申请人： Matsushita Electric Ind Co Ltd
发明人： TOMITA MASAO , HASHIMA AKIO
IPC分类号： H04N9/83
CPC分类号： H04N9/831
摘要： PURPOSE:To eliminate the necessity of adjustment of a device used for recording and reproducing video signals and to constitute the device with LSIs so as to minaturize the device and reduce the cost, by fixing the signal processing form in such a way that luminance signals are processed by analog process and chrominance signals are processed by digital process after low-frequency converted carrier chrominance signals are converted into digital signals. CONSTITUTION:A luminance signal is separated by an LPF4 from a color video signal impressed upon a terminal 3 and supplied to a mixer 13 after it is converted 5 in terms of frequency. A carrier chrominance signal which is the output of a BPF6 is low-frequency converted to the low frequency side of the recordable and reproduceable band of a recording and reproducing medium 14, for example, to a band of 629KHz+ or - 500KHz, by means of a balanced modulator 7, oscillator 8, and LPF9. The low-frequency converted carrier chrominance signal is converted into a digital signal by an AD converter 10. The digitized low- frequency converted carrier chrominance signal is given to a chroma processing circuit 11 at the recording side which executes processings required at the recording side in the form of digital signals, and processed. The output of the processing circuit 11 is returned to the analog signal by an AD converter. Then the analog signal is mixed with the luminance signal at a mixer 13 and recorded on the recording and reproducing medium 14.
摘要翻译：目的：为了消除对用于记录和再现视频信号的设备的调整的必要性，并且为了使设备小型化并降低成本，通过将信号处理形式固定为亮度信号为通过模拟处理处理和色度信号在低频转换载波色度信号被转换为数字信号后通过数字处理进行处理。构成：亮度信号由LPF4与施加在端子3上的彩色视频信号分开，并且在频率转换5之后提供给混频器13。作为BPF6的输出的载波色度信号被低频转换成记录和再现介质14的可记录和可再现的频带的低频侧，例如通过以下方式通过：629KHz +或 - 500KHz的频带平衡调制器7，振荡器8和LPF9。低频转换的载波色度信号由AD转换器10转换为数字信号。数字化的低频转换载波色度信号被提供给记录侧的色度处理电路11，其执行记录侧所需的处理数字信号的形式，并处理。处理电路11的输出由AD转换器返回到模拟信号。然后将模拟信号与混合器13处的亮度信号混合并记录在记录和再现介质14上。

6. 发明专利

JPS59151314A Magnetic recording and reproducing method 失效
标题翻译：磁记录和再现方法
公开(公告)号：JPS59151314A
公开(公告)日：1984-08-29
申请号：JP1997883
申请日：1983-02-09
申请人： Matsushita Electric Ind Co Ltd
发明人： TOMITA MASAO , HASHIMA AKIO
IPC分类号： H04N5/91 , G11B20/00 , G11B20/06 , H04N5/92
CPC分类号： H04N5/92
摘要： PURPOSE:To improve the recording and reproducing quality of a sound signal of a VTR by recording a video signal and a sound signal applied with code modulation by frequency multiplex on the identical track, separating the frequency of the video signal from that of the code modulated sound signal at reproduction and demodulating respectively the signals. CONSTITUTION:A luminance signal frequency-modulated, a chrominance carrier signal converted into a low frequency and the code modulated sound signal are inputted to a synthesizer 15 in the form that they occupy individual band respectively. Each signal subject to frequency multiplex at the synthesizer 15 is given to a rotary head 17 via a recording amplifier 16 and recorded on a video track on a magnetic tape 18. A signal recorded on the magnetic tape 18 is picked up by the rotary head 17 of the reproducing system, amplified at a head amplifier 19, and then given to filter groups 20, 23, 27 for frequency separation. The luminance signal being an output of a low pass filter 22 and the chrominance carrier signal being an output of a band pass filter 25 are mixed to form a color video signal. The signal obtained by the high pass filter (HPF)27 is restored into the sound signal and outputted to a terminal 30.
摘要翻译：目的：通过在相同的轨道上记录通过频率复用应用代码调制的视频信号和声音信号来提高VTR的声音信号的记录和再现质量，将视频信号的频率与编码的码声音信号在再现和分别解调信号。构成：频率调制的亮度信号，转换成低频的色度载波信号和码调制声音信号分别以它们占据各个频带的形式输入到合成器15。在合成器15处进行频率复用的每个信号经由记录放大器16被提供给旋转磁头17并被记录在磁带18上的视频磁道上。记录在磁带18上的信号由旋转磁头17拾取的再现系统，在头放大器19处被放大，然后被给予用于频率分离的滤波器组20,23,27。作为低通滤波器22的输出的亮度信号和作为带通滤波器25的输出的色度载波信号被混合以形成彩色视频信号。由高通滤波器（HPF）27获得的信号被恢复到声音信号中并输出到端子30。

7. 发明专利

JPS59151310A Magnetic recording and reproducing device 失效
标题翻译：磁记录和再现设备
公开(公告)号：JPS59151310A
公开(公告)日：1984-08-29
申请号：JP1997683
申请日：1983-02-09
申请人： Matsushita Electric Ind Co Ltd
发明人： TOMITA MASAO , HASHIMA AKIO
IPC分类号： G11B20/00 , G11B27/029 , H04N5/92
CPC分类号： H04N5/92 , G11B27/029
摘要： PURPOSE:To improve the quality of recording and reproduction of a sound signal and to attain long time design of a VTR by incorporating the 1st recording means applying frequency multiplex to the sound signal at a high frequency side of a video signal and recording the signal on the same track and the 2nd recording means erasing and re-recording only the sound signal having high frequencies. CONSTITUTION:A sound signal processing circuit 10 at recording side processes a sound input with FM or PCM so as to obtain a high reproducing sound quality and so as to bring the input to a high frequency side of a video signal. Thus, the frequency allocation where the sound signal subject to frequency multiplex processing is allocated at the high frequency side of the video signal is realized in an output of an adder 12. Further, in rewriting sound information of a tape recorded already, the mode has only to be switched into the recording mode after a switch 11 is opened. A new sound input given to a terminal 8 is recorded by rotary magnetic heads 15, 16 via a sound signal processing circuit 10, the adder 12 and a recording amplifier 13. The sound signal on a magnetic tape is rewritten into the new information by setting only the sound signal to a value to be erased and re-recorded in this case.
摘要翻译：目的：为了提高声音信号的记录和再现的质量，并且通过将针对视频信号的高频侧的声音信号应用频率多路复用的第一记录装置并且将信号记录在一起来实现VTR的长时间设计相同的轨道和第二记录装置仅擦除和重新记录具有高频率的声音信号。构成：记录侧的声音信号处理电路10用FM或PCM处理声音输入，以获得高的再现声音质量，并将输入输入到视频信号的高频侧。因此，在加法器12的输出中实现在视频信号的高频侧分配频率复用处理的声音信号的频率分配。此外，在重写已经记录的磁带的声音信息时，该模式具有只有在开关11打开之后才被切换到记录模式。通过旋转磁头15,16通过声音信号处理电路10，加法器12和记录放大器13记录给端子8的新的声音输入。磁带上的声音信号通过设置被重新写入新的信息在这种情况下，只有声音信号才能被擦除并重新记录。

8. 发明专利

JPS5981984A VIDEO SIGNAL RECORDING DEVICE 失效
公开(公告)号：JPS5981984A
公开(公告)日：1984-05-11
申请号：JP19291882
申请日：1982-11-01
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MATSUO TADAAKI , KOBAYASHI MASAAKI , HASHIMA AKIO
IPC分类号： H04N5/922 , H04N9/79
摘要： PURPOSE:To increase the resolution of a video tape recorder by selecting a clamping circuit which suits to a carrier frequency selected by a control circuit through a switch circuit. CONSTITUTION:A video signal is inputted from an input terminal 1 and separated by an LPF2 into a luminance and a carrier chrominance signal and the separated luminance signal is inputted to the clamping circuit 3. Then, a control circuit 6 generates a control signal for switching a clamping voltage corresponding to the selected carrier frequency and this signal is inputted to the circuit 3. Thus, the clamping voltage of the circuit 3 is selected and the luminance signal is clamped by this clamping voltage. The luminance signal outputted from the circuit 3 is pre-emphasized and inputted to a clipping circuit 4. Further, the output of the control circuit 6 is inputted to the circuit 4 to clip the luminance signal by a selected clipping voltage and the resulting luminance signal is sent from the circuit 4 to an FM modulating circuit 5, whose output signal is recorded through a magnetic head 9.

9. 发明专利

JPS5977784A Video tape recorder 失效
标题翻译：录像机
公开(公告)号：JPS5977784A
公开(公告)日：1984-05-04
申请号：JP18797682
申请日：1982-10-25
申请人： Matsushita Electric Ind Co Ltd
发明人： HONJIYOU MASAHIRO , HASHIMA AKIO
IPC分类号： G11B20/06 , H04N5/91 , H04N5/93 , H04N9/79 , H04N9/82 , H04N9/83
CPC分类号： H04N9/83 , H04N5/9305 , H04N9/8238
摘要： PURPOSE:To record and reproduce a character broadcasting signal by detecting the vertical synchronizing signal in a composite video signal, and recording or reproducing only a luminance signal in the specific section in a vertical blanking period based upon the detected signal information. CONSTITUTION:A recording system is provided with switches SW1-SW5 so that an LPF2 is switched to an LPF3 with a high cutoff frequency, an HPF5 is placed in a through state, and a low frequency color signal CLOW is not sent to a mixer 6. A VH detecting circuit 12 detects a vertical and a horizontal pulse and a control circuit 13 outputs a control signal according to the information to turn SW1, SW3, and SW5 on and SW2 and SW4 off in a section wherein the band of a luminance signal Y is expanded. A reproduction side, on the other hand, has SW6-SW10 which places an HPF17 in a through state, switch an LPF19 to an LPF20 with a high cutoff frequency, and cutting off the signal CLOW to a mixer 21. Then, the SW7 and SW9 are turned on in a section wherein the band of the signal Y is expanded.
摘要翻译：目的：通过检测复合视频信号中的垂直同步信号来记录和再现字符广播信号，并且基于检测到的信号信息在垂直消隐期间仅记录或再现特定部分中的亮度信号。构成：记录系统设置有开关SW1-SW5，使得LPF2切换到具有高截止频率的LPF3，HPF5被置于通过状态，并且低频彩色信号CLOW不发送到混频器6 VH检测电路12检测垂直和水平脉冲，并且控制电路13根据该信息输出控制信号以使SW1，SW3和SW5接通，SW2和SW4断开，其中亮度信号的频带 Y扩展。另一方面，再现侧具有将HPF17置于通状态的SW6-SW10，将LPF19切换到具有高截止频率的LPF20，并将信号CLOW切换到混频器21.然后，SW7和 SW9在信号Y的频带被扩展的部分被接通。

10. 发明专利

JPS5930211A Magnetic recording and reproducing device 失效
标题翻译：磁记录和再现设备
公开(公告)号：JPS5930211A
公开(公告)日：1984-02-17
申请号：JP14054682
申请日：1982-08-12
申请人： Matsushita Electric Ind Co Ltd
发明人： KOBAYASHI MASAAKI , HONJIYOU MASAHIRO , HASHIMA AKIO
IPC分类号： G11B5/02 , G11B5/00
CPC分类号： G11B5/00
摘要： PURPOSE:To perform conversion into a signal sequence having alternate signal and nonsignal periods and to carry out recording and reproduction with remarkably short wavelength by setting the gap length direction of a magnetic head to its relative movement direction, and imposing time-axis compression at intervals of unit time during recording operation. CONSTITUTION:The direction of the effective gap length L of the magnetic head 21 is set to its running direction. When its relative speed is V and the signal and nonsignal periods are M and N, an input signal is compressed on time-axis basis to have a recorded section with M/V and an unrecorded section T with N/V. A playback signal includes a signal P, nonsignal part E, signal Q, and nonsignal part F. The signal P is a signal reproduced by the front end part 22 of the magnetic head 22 and the signal Q is a signal reproduced by the rear end part 23. When M/V
摘要翻译：目的：通过将磁头的间隙长度方向设定为其相对移动方向，执行具有交替信号和非信号周期的信号序列的转换，并以非常短的波长执行记录和再现，并且间隔地施加时间轴压缩在记录操作期间的单位时间。构成：将磁头21的有效间隙长度L的方向设定为其行进方向。当其相对速度为V并且信号和非信号周期为M和N时，输入信号在时间轴上被压缩以具有M / V的记录部分和具有N / V的未记录部分T. 重放信号包括信号P，非信号部分E，信号Q和非信号部分F.信号P是由磁头22的前端部分22再现的信号，信号Q是由后端再现的信号对于信号记录部分M / V和磁道5的未记录部分N / V，当M / V

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