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1. 发明专利

JPS6120925B2 JPS6120925B2 - 失效
公开(公告)号：JPS6120925B2
公开(公告)日：1986-05-24
申请号：JP8713278
申请日：1978-07-19
申请人： Japan Broadcasting Corp
发明人： NAKAGAWA SHOZO , YOKOYAMA KATSUYA , KATAYAMA HIROMOTO
IPC分类号： G11B5/008 , G11B5/09 , G11B5/53 , G11B15/14 , G11B20/18 , H04N5/7826 , H04N5/783 , H04N5/926 , H04N9/89
CPC分类号： H04N5/9268 , G11B5/534 , G11B15/14 , G11B20/1813 , H04N5/7826 , H04N5/783 , H04N9/89

2. 发明专利

JPS59175007A Head switching device 失效
标题翻译：头开关装置
公开(公告)号：JPS59175007A
公开(公告)日：1984-10-03
申请号：JP4983983
申请日：1983-03-24
申请人： Matsushita Electric Ind Co Ltd
发明人： KATAOKA KAZUHIRO , KITAMURA SADAFUMI , BABA TASUKU
IPC分类号： G11B5/027 , G11B15/14 , H04N5/93
CPC分类号： G11B15/14
摘要： PURPOSE:To attain the switching between a normal reproduction head and a still picture head by providing a switching transistor (TR) which controls the bias to the base of a TR of the first stage connected to the still picture reproduction head as well as another TR of the first stage connected to the normal reproduction head. CONSTITUTION:In a normal reproduction mode an H signal is applied to an input terminal 17. Thus both TRs Q5 and Q6 are turned on, and the DC voltage fed back by resistances R6 and R10 is applied to the base of a TRQ1 connected to a head 1. Thus the TRQ1 is turned on, and the reproduction signal is supplied to a following amplifier circuit. In a still picture reproduction, an L signal is applied to the terminal 17 to cut off both TRs Q5 and Q6 with a TRQ7 turned on. Therefore the TRs Q1 and Q2 are turned off and on respectively, and only the still picture reproducing signal is amplified. The normal or still picture signal reproduced by a head switch circuit 14 is switched for every field and extracted as a head amplifier output. Thus it is possible to switch heads with no variation of a resonance point nor a contact defect.
摘要翻译：目的：通过提供控制与连接到静止图像再现头的第一级的TR的基极的偏置的开关晶体管（TR）以及另一TR（TR）来实现正常再现头与静止图像头之间的切换的第一级连接到正常的再现头。构成：在正常再现模式中，H信号被施加到输入端子17.因此，两个TRs Q5和Q6导通，并且由电阻R6和R10反馈的DC电压被施加到连接到TRQ1的TRQ1的基极头1.因此，TRQ1导通，并且再现信号被提供给后续的放大器电路。在静止图像再现中，将L信号施加到终端17，以在TRQ7导通的情况下切断两个TRs Q5和Q6。因此，TRs Q1和Q2分别关闭和接通，并且只有静止图像再现信号被放大。由头开关电路14再现的正常或静止图像信号针对每个场进行切换并作为头放大器输出提取。因此，可以不产生谐振点的变化和接触缺陷来切换磁头。

3. 发明专利

JPS59107405A Video recorder having recording section of voice carrier 失效
标题翻译：具有语音载体录音部分的录像机
公开(公告)号：JPS59107405A
公开(公告)日：1984-06-21
申请号：JP21636783
申请日：1983-11-18
申请人： Telefunken Fernseh & Rundfunk
发明人： ERUNSUTO SHIYUREEDAA , HANSUUYURUGEN KURUTO , BUERUNAA SHIYORUTSU
IPC分类号： G11B15/14 , G11B20/06 , G11B20/24 , H04N5/91 , H04N5/93 , H04N9/835
CPC分类号： H04N5/93 , G11B15/14 , G11B20/06 , G11B20/24 , H04N9/8355

4. 发明专利

JPS5979404A Switching noise eliminator 失效
标题翻译：切换噪音消除器
公开(公告)号：JPS5979404A
公开(公告)日：1984-05-08
申请号：JP19035482
申请日：1982-10-29
申请人： Nakamichi Corp
发明人： YAMADA FUMIAKI
IPC分类号： G11B20/02 , G11B15/14
CPC分类号： G11B15/14
摘要： PURPOSE:To eliminate the switching noises of a rotary head type magnetic recording/reproducing device by using an LPF which secures synchronism between the joint position of a continuous reproduction signal and the non-sampling time of a sampling means and then filters the sampling signal. CONSTITUTION:A change from H to L is slightly delayed by a delay circuit 6 for the control signal S1 which connects a mobile contact 43 of a switching circuit 4 to a fixed contact 42 from another fixed contact 41. Thus a noise is produced at a time point t3 after a time point t2. Therefore the signal at the joint part between demodulated waveforms Sa and Sb synchronizes with the non- sampling time of a sampling means and is grounded. While in case a rotary head 12 is changed to another rotary head 11, a mobile contact 83 of a switching circuit 8 is first connected to the switching side of the head 11. Then a switching connection is carried out for the circuit 4, that is, the waveform Sa is joined to a demodulated waveform Sb. Thus the joint position synchronizes with the non- sampling time. Then the sampling signal of the sampled demodulated waveform is filtered by an LPF9 and extracted out of an output terminal t3. Thus it is possible to obtain a sound signal which is free from switching noises and has high fidelity to an original sound through the terminal t3.
摘要翻译：目的：通过使用固定连续再现信号的联合位置与采样装置的非采样时间之间的同步的LPF来消除旋转磁头式磁记录/再现装置的切换噪声，然后对采样信号进行滤波。构成：对于将开关电路4的移动触点43与固定触点42连接的控制信号S1的延迟电路6，从H向L的变化稍微延迟。因此，在时间点t2之后的时间点t3。因此，解调波形Sa和Sb之间的接合部分处的信号与采样装置的非采样时间同步并接地。在旋转磁头12改变为另一个旋转磁头11的情况下，开关电路8的移动触点83首先连接到磁头11的切换侧。然后对于电路4进行切换连接，也就是说，，波形Sa与解调波形Sb相连。因此，联合位置与非采样时间同步。然后采样解调波形的采样信号由LPF9滤波，并从输出端t3抽出。因此，可以获得没有切换噪声的声音信号，并且通过端子t3具有对原始声音的高保真度。

5. 发明专利

JPS5941987A Track jump detecting device 失效
标题翻译： TRACK JUMP检测设备
公开(公告)号：JPS5941987A
公开(公告)日：1984-03-08
申请号：JP15076282
申请日：1982-09-01
申请人： Hitachi Ltd
发明人： KOJIMA NOBORU , AZEYANAGI TOMOMITSU , TERADA AKIMICHI , SHIBATA AKIRA
IPC分类号： H04N5/783 , G11B5/588 , G11B15/14 , G11B15/18 , G11B15/467 , H04N5/93
CPC分类号： G11B15/14 , G11B15/1808
摘要： PURPOSE:To detect exactly a jump point, by detecting from a pilot signal a fact that a reproducing head jumps a video track, in case of reproducing a magnetic tape in which the pilot signal is multi-recorded in each video track. CONSTITUTION:In a VTR, an FM-modulated luminance signal, a low band-converted chroma signal and a pilot signal are mixed and are recorded on a magnetic tape. A reproducing pilot signal led to an input terminal 10 is led to a frequency converter 12, and is subjected to frequency conversion with respect to pilot signals f1-f4 from a pilot signal generating circuit 8. It is switched to each channel in a selecting circuit 18 by a pulse synchronizing with switching of a head from an input terminal 11. Difference frequency of the reproducing pilot signal and a carrier signal among outputs of the converter 12 is provided to a differential amplifier 15 through tank circuits 13, 14 having tank frequencies fH, f3H, and by making an output of the amplifier 15 pass through a limiter 16, a signal for indicating a track jump point can be obtained in a terminal 17.
摘要翻译：目的：通过从导频信号中检测重放头跳视频轨道的事实，在再现其中导频信号被多记录在每个视频轨道中的磁带的情况下，正好检测跳跃点。构成：在VTR中，FM调制亮度信号，低频带转换色度信号和导频信号混合并记录在磁带上。被引导到输入端子10的再现导频信号被引导到变频器12，并且相对于来自导频信号发生电路8的导频信号f1-f4进行频率转换。切换到选择电路中的每个通道通过与来自输入端子11的头的切换同步的脉冲，通过转换器12的输出之间的再现导频信号和载波信号的差频被提供给差分放大器15，通过具有槽频率fH的箱电路13,14 ，f3H，并且通过使放大器15的输出通过限幅器16，可以在终端17中获得用于指示轨道跳转点的信号。

6. 发明专利

JPS5936487A Magnetic reproducer 失效
标题翻译：磁性复制器
公开(公告)号：JPS5936487A
公开(公告)日：1984-02-28
申请号：JP14710682
申请日：1982-08-24
申请人： Matsushita Electric Ind Co Ltd
发明人： MATSUMOTO TOKIKAZU , HONJIYOU MASAHIRO , KOBAYASHI MASAAKI
IPC分类号： G11B5/027 , G11B5/53 , G11B15/14 , G11B20/20 , H04N5/783 , H04N5/93 , H04N5/95 , H04N5/953
CPC分类号： G11B15/14 , G11B5/531 , G11B20/20 , H04N5/783 , H04N5/953
摘要： PURPOSE: To prevent the production of noise bar and skew, by compensating a decreased output reproducing signal level of a main head with the switching of the signal into an output reproducing signal of an auxiliary rotary head and eliminating the skew generated for the case with a variable delay line.
CONSTITUTION: Suppose that a head switch signal goes to an H level, then a reproduced output is obtained from a main rotary head M1 and an auxiliary rotary head S1. Further, when the head switch signal goes to an L level, a reproduced output is obtained from a main rotary head M2 and an auxiliary rotary head S2. The switch 23 is changed over so as to compensate the reproduced output from the main rotary heads M1, M2 with that from the auxiliary rotary heads S1, S2 if the reproduced output of the heads M1, M2 is decreased. The skew generated when the main rotary heads M1, M2 and the auxiliary rotary heads S1, S2 are changed over is corrected at a skew correcting circuit 25.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：为了防止产生噪音条和歪斜，通过将信号切换为辅助旋转头的输出再现信号来补偿主头的输出再现信号电平降低，并消除了对于具有辅助旋转头的情况产生的偏斜可变延迟线。构成：假设头开关信号变为H电平，则从主旋转磁头M1和辅助旋转磁头S1获得再现输出。此外，当磁头开关信号变为L电平时，从主旋转磁头M2和辅助旋转磁头S2获得再现的输出。切换开关23，以便如果磁头M1，M2的再现输出减小，则补偿来自辅助旋转磁头S1，S2的主旋转磁头M1，M2的再现输出。当主旋转磁头M1，M2和辅助旋转磁头S1，S2被切换时产生的偏斜在偏斜校正电路25被校正。

7. 发明专利

JPS58220581A Video tape recorder 失效
标题翻译：录像机
公开(公告)号：JPS58220581A
公开(公告)日：1983-12-22
申请号：JP10421782
申请日：1982-06-16
申请人： Matsushita Electric Ind Co Ltd
发明人： MATSUMOTO TOKIKAZU , IKATA KOUICHI , KOBAYASHI MASAAKI
IPC分类号： H04N5/93 , G11B5/027 , G11B15/14 , G11B27/00
CPC分类号： G11B15/14 , G11B27/005
摘要： PURPOSE:To obtain a good reproduction picture in variable reproduction speed from still to 3 times, by combining a still, two-time speed, and three-time speed with a normal reproduction speed to realize a variable speed reproduction, and by switching properly a main and an auxiliary rotary heads at the time of special reproduction. CONSTITUTION:The figure (a) shows the state in which track patterns are repeatedly arranged, and a heavy line in the figure shows a head locus at the time of reproduction with 0.5-time speed. Movable pieces of switches 44 and 45 are connected to an X side when a switching pulse is of an H level, and to a Y side when being of an L level. They are connected to the Y side when a main and auxiliary rotary heads switching signal shown in the figure (d) is at the H level, and connected to the X side at the L level. Thus, a track of even number is reproduced when the switching pulse does not agree with the head switching signal, and a track of an odd number is reproduced if they agree each other. To realize 0.5-time speed, a speed switching signal generator 10 receives a signal from a waveform processing circuit 20 to outut a normal indication signal shown in the figure (e) and a still indication signal shown in the figure (f). Since the main and auxiliary rotary heads are timely switched by the head switching signal (d), a reproduction envelope shown in the figure (b) at this moment does not lower, and a picture is in good state.
摘要翻译：目的：为了通过将正常再现速度与静止速度，两倍速度和三倍速度进行组合，以可变再现速度从3倍提高到良好的再现画面，实现变速再现，通过正确切换主要和辅助旋转头在特殊复制时。构成：图（a）示出了重复排列轨迹图案的状态，图中的粗线在0.5倍速度再现时显示出头部轨迹。当开关脉冲为H电平时，开关44和45的可移动片连接到X侧，当L电平连接到Y侧。当图（d）所示的主旋转头切换信号处于H电平并且连接到X侧的L电平时，它们连接到Y侧。因此，当开关脉冲与磁头开关信号不一致时，再现偶数磁迹，如果它们彼此相符，则奇数轨道被再现。为了实现0.5次速度，速度切换信号发生器10接收来自波形处理电路20的信号，以消除图（e）所示的正常指示信号和图（f）所示的静止指示信号。由于通过磁头切换信号（d）及时地切换主旋转磁头和辅助旋转磁头，所以此时图b所示的再现包络不会降低，图像处于良好状态。

8. 发明专利

JPS5750179A Video signal reproducing device 失效
标题翻译：视频信号再现设备
公开(公告)号：JPS5750179A
公开(公告)日：1982-03-24
申请号：JP12544680
申请日：1980-09-10
申请人： Sony Corp
发明人： SONODA MASAKAZU
IPC分类号： H04N5/783 , G11B15/14
CPC分类号： G11B15/14
摘要： PURPOSE:To obtain a slow motion reproducing picture, by feeding magnetic tape intermittently by one track pitch, and making the switching of each head of the 1st and 2nd rotating head pairs according to the output signal of the 1st and 2nd control signal reproducing heads. CONSTITUTION:A head switching pulse A is inputted from a terminal 11, and an intermittent drive pulse (b) is formed via monostable multi-vibrators 12, 13. The pulse (b) is applied to a drive circuit 14, where a capstan motor 15 is driven intermittently. On the other hand, the pulse A is applied to a differentiation circuit 30 and applied to gates 28, 29 via an inverter. Gate pulses (h) and (i) are given to the gate circuits 28, 29 to form differentiation pulses (j) and (k). The pulses (j) and (k) are applied to a F/F32 to form head switching pulse (l). In case of slow playback mode, (m) is at high level, and the inversion (l) signal is applied to a selector switch 35 and the (l) signal is to the selector switch 38 respectively. When the (l) is at high level, the switch 38 is selected to H side and the switch 35 is to L side to select heads A and A'.
摘要翻译：目的：为了获得慢动作再现图像，通过以一个轨道间距间歇地馈送磁带，并根据第一和第二控制信号再现头的输出信号进行第一和第二旋转磁头对的每个磁头的切换。构成：从端子11输入磁头开关脉冲A，并且通过单稳态多重振动器12,13形成间歇驱动脉冲（b）。脉冲（b）被施加到驱动电路14，其中主导轴电动机 15间歇地驱动。另一方面，脉冲A被施加到微分电路30，并通过反相器施加到门28,29。栅极脉冲（h）和（i）被提供给栅极电路28,29以形成微分脉冲（j）和（k）。将脉冲（j）和（k）施加到F / F32以形成磁头切换脉冲（l）。在慢播放模式的情况下，（m）处于高电平，并且反相（1）信号被施加到选择器开关35，并且（1）信号分别连接到选择器开关38。当（l）处于高电平时，开关38被选择为H侧，并且开关35为L侧以选择磁头A和A'。

9. 发明专利

JPS5737705A Rotary magnetic head device 失效
标题翻译：旋转磁头设备
公开(公告)号：JPS5737705A
公开(公告)日：1982-03-02
申请号：JP11304180
申请日：1980-08-19
申请人： Hitachi Denshi Ltd
发明人： KASAI SUSUMU
IPC分类号： G11B5/02 , G11B5/52 , G11B15/14 , G11B33/12
CPC分类号： G11B33/122 , G11B15/14
摘要： PURPOSE:To supply operating power for a head amplifier for a monitoring playback head in a rotary drum, by obtaining electric power from the rotation motion energy of the rotary drum by an AC generator. CONSTITUTION:A rotary drum 2 having a rotating shaft 14 pivoted on a guide drum 13 by a ball bearing 15 is driven by a driving motor 16 to rotate. The rotary drum 2 is incorporated with a monitoring playback head and its head amplifier 12 in addition to a recording and playback head, and the signals of the recording and playback head and head amplifier 12 are coupled with external equipments through rotary transformers 6-8. The output of an AC generator 21 which has an armature fitted to the rotary shaft 14 and a field system fitted to a fixed member is supplied to the head amplifier 12 through a rectifying circuit and a voltage stabilizing circuit on the same substrate with the head amplifier 12 by a lead wire 20.
摘要翻译：目的：通过由交流发电机从旋转磁鼓的旋转运动能量获得电力，为旋转磁鼓中的监视重放头提供头放大器的工作电源。构成：具有通过滚珠轴承15在导向鼓13上枢转的旋转轴14的旋转滚筒2由驱动马达16驱动旋转。旋转鼓2除了记录和重放头之外还与监视重放头及其头放大器12结合，并且记录和重放头和头放大器12的信号通过旋转变压器6-8与外部设备耦合。具有装配到旋转轴14的电枢和安装到固定部件的现场系统的交流发电机21的输出通过整流电路和与顶部放大器在同一基板上的稳压电路提供给头放大器12 12通过导线20。

10. 发明专利

JP2004246949A Magnetic recording head and rotating drum device and magnetic recording/reproducing method and apparatus using them 审中-公开
公开(公告)号：JP2004246949A
公开(公告)日：2004-09-02
申请号：JP2003034043
申请日：2003-02-12
申请人： Sony Corp , ソニー株式会社
发明人： SUZUKI KYOKO , OSUE TADASHI , FUKUDA SHINICHI , SHIRAI TOSHIO
IPC分类号： G11B5/008 , G11B5/02 , G11B5/39 , G11B5/48 , G11B5/53 , G11B15/14 , G11B15/467
CPC分类号： G11B5/3951 , G11B5/0086 , G11B5/00865 , G11B5/3967 , G11B5/4893 , G11B5/534 , G11B15/14 , G11B15/4673
摘要： PROBLEM TO BE SOLVED: To obtain a helical scan type magnetic recording/reproducing apparatus having high recording density.
SOLUTION: In the helical scan type magnetic recording/reproducing apparatus in which input data are encoded and recorded by recording heads W1-W4 as signals of n system (e.g. n=4), reproduced by 2n pieces of reproduction heads R1-R8 and subjected to non-tracking process to decode them, each of the recording heads W1-W4 is constituted as one head having four multi-gaps with lower magnetic poles 31 and upper magnetic poles 33 arranged thereon through a gap 32. Core widths CW of the recording heads W2, W3, W4 are each made to be a track pitch TP +α1 and formed to be overlapped with the track pitch TP of the W1-W3 by α1, so that the specified recording width TP can be surely obtained, and the core width CW of the W1 is formed into the track pitch TP +α2 (α2>α1) while taking the fluctuation of the head position one round after into account, then the recording pattern without gap is obtained.
COPYRIGHT: (C)2004,JPO&NCIPI

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