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公开(公告)号：EP0169013A2
公开(公告)日：1986-01-22
申请号：EP85304825.4
申请日：1985-07-05
IPC分类号： H04N5/12
CPC分类号： H04N9/797
摘要： A video signal recording and reproducing apparatus comprises a circuit (12) for generating a first signal having a sampling frequency f s which is approximately a natural number multiple of a horizontal scanning frequency f H of an input composite video signal and satisfies F s ≒ f L + fu and having a phrase which differs by 180° for every one field, where f L represents a constant frequency in the range of 0.5 to 1 MHz and fu represents an upper limit frequency of a band required for a reproduced composite video signal a circuit (13) for sampling a signal part of the input composite video signal at least exluding synchronizing signal intervals thereof by the first signal, a circuit (14, 15) for recording and reproducing the sampled signal on and from a recording medium, a circuit (16) for obtaining from the reproduced signal first and second reproduced sampled signals having a mutual time difference of one field, a circuit (17) for generating from the reproduced signal a second signal having the frequency f s and having a phase which differs by 180° for every one field, and a circuit (18) supplied with the second signal for alternately and selectively passing the first and second reproduced sampled signals for every 1/2 period of the second signal so as to obtain a reproduced composite video signal which has been re-sampled.
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2.发明授权Synchronizing signal separating circuit for a colour video signal recording and reproducing apparatus 失效用于彩色视频信号记录和再现设备的同步信号分离电路同步
公开(公告)号：EP0132140B1
公开(公告)日：1991-01-30
申请号：EP84304810.9
申请日：1984-07-13
发明人： Nishimoto, Naomichi
CPC分类号： H04N9/81
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公开(公告)号：EP0312362A2
公开(公告)日：1989-04-19
申请号：EP88309611.7
申请日：1988-10-13
CPC分类号： H04N5/7826 , H04N5/928 , H04N9/8216
摘要： A magnetic tape is wound on a rotary drum through a predetermined angular range greater than a standard tape winding angle. The predetermined angular range has a first portion corresponding to the standard tape winding angle and a second portion exending outward of the first portion. A main information signal is recorded into a main information recording track (111, 112) on the magnetic tape which extends in a region corresponding to the first portion of the predetermined angular range. A sub information signal is recorded into a sub information recording track (121-127) on the magnetic tape which extends along an extension line of the main information recording track and which extends in a region corresponding to the second portion of the predetermined angular range. A plurality of magnetic heads (212-216) have different track widths respectively and are mounted on the rotary drum. The magnetic heads form respective different tracks which together constitute the sub information recording track.
摘要翻译： 磁带通过大于标准磁带缠绕角度的预定角度范围缠绕在旋转磁鼓上。 预定角度范围具有对应于标准带缠绕角度的第一部分和从第一部分向外延伸的第二部分。 主信息信号被记录到磁带上的主信息记录磁道（111,112）上，磁带在对应于预定角度范围的第一部分的区域中延伸。 子信息信号被记录到磁带上的子信息记录道（121-127）中，该信息沿着主信息记录道的延长线延伸并且在对应于预定角度范围的第二部分的区域中延伸。 多个磁头（212-216）分别具有不同的磁道宽度并安装在旋转磁鼓上。 磁头形成各自不同的轨道，它们一起构成副信息记录轨道。
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公开(公告)号：EP0169013A3
公开(公告)日：1987-11-04
申请号：EP85304825
申请日：1985-07-05
IPC分类号： H04N05/12
CPC分类号： H04N9/797
摘要： A video signal recording and reproducing apparatus comprises a circuit (12) for generating a first signal having a sampling frequency f s which is approximately a natural number multiple of a horizontal scanning frequency f H of an input composite video signal and satisfies F s ≒ f L + fu and having a phrase which differs by 180° for every one field, where f L represents a constant frequency in the range of 0.5 to 1 MHz and fu represents an upper limit frequency of a band required for a reproduced composite video signal a circuit (13) for sampling a signal part of the input composite video signal at least exluding synchronizing signal intervals thereof by the first signal, a circuit (14, 15) for recording and reproducing the sampled signal on and from a recording medium, a circuit (16) for obtaining from the reproduced signal first and second reproduced sampled signals having a mutual time difference of one field, a circuit (17) for generating from the reproduced signal a second signal having the frequency f s and having a phase which differs by 180° for every one field, and a circuit (18) supplied with the second signal for alternately and selectively passing the first and second reproduced sampled signals for every 1/2 period of the second signal so as to obtain a reproduced composite video signal which has been re-sampled.
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5.发明公开Jitter-immune time expansion for time-compressed line-sequential video signals 失效Zeitdekompression不响应时基的波动符合时间压缩顺序视频信号。
公开(公告)号：EP0140706A2
公开(公告)日：1985-05-08
申请号：EP84307476.6
申请日：1984-10-30
发明人： Nishimoto, Naomichi
IPC分类号： H04N9/81
摘要： In an apparatus for time-compression video recording and time-expansion reproduction, first and second memory address counters are initialized in response to there being a simultaneous presence of vertical and horizontal sync pulses. Until the next vertical blanking period the counters are continuously incremented at different rates during mutually exclusive times for successively writing and reading the luminance component of a composite color television signal. A third memory address counter operable in recyclically variable count modes is provided for writing and reading the color-difference components at sequentially varying rates during a count cycle and generating an output pulse at the end of the count cycle. A phase comparator detects the phase difference between the horizontal sync pulse and the output pulse of the third address counter. A variable frequency oscillator is responsive to the phase difference for incrementing the third address counter at a rate corresponding to the phase difference.
摘要翻译： 在用于时间压缩视频录制和时间扩展再现，装置的第一和第二存储器地址计数器响应于存在垂直和水平同步脉冲的同时存在初始化。 直到下一个垂直消隐周期的计数器被连续以不同的速率在互斥倍递增，用于连续地写入和读出一个复合彩色电视信号的亮度分量。 可操作recyclically变量计数模式的第三存储器地址计数器在循环计数的端部设置用于写入和计数循环期间读取以循序变化的速率的色差分量，并产生在输出脉冲。 相位比较器检测到水平同步脉冲和第三地址计数器的输出脉冲之间的相位差。 一种可变频率振荡器响应于用于以一定的速率对应于该相位差递增第三地址计数器的相位差。
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公开(公告)号：EP0312362A3
公开(公告)日：1990-08-29
申请号：EP88309611.7
申请日：1988-10-13
CPC分类号： H04N5/7826 , H04N5/928 , H04N9/8216
摘要： A magnetic tape is wound on a rotary drum through a predetermined angular range greater than a standard tape winding angle. The predetermined angular range has a first portion corresponding to the standard tape winding angle and a second portion exending outward of the first portion. A main information signal is recorded into a main information recording track (111, 112) on the magnetic tape which extends in a region corresponding to the first portion of the predetermined angular range. A sub information signal is recorded into a sub information recording track (121-127) on the magnetic tape which extends along an extension line of the main information recording track and which extends in a region corresponding to the second portion of the predetermined angular range. A plurality of magnetic heads (212-216) have different track widths respectively and are mounted on the rotary drum. The magnetic heads form respective different tracks which together constitute the sub information recording track.
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7.发明公开Jitter-immune time expansion for time-compressed line-sequential video signals 失效用于时间压缩的线性序列视频信号的抖动 - 免疫时间扩展
公开(公告)号：EP0140706A3
公开(公告)日：1986-03-05
申请号：EP84307476
申请日：1984-10-30
发明人： Nishimoto, Naomichi
IPC分类号： H04N09/81
摘要： In an apparatus for time-compression video recording and time-expansion reproduction, first and second memory address counters are initialized in response to there being a simultaneous presence of vertical and horizontal sync pulses. Until the next vertical blanking period the counters are continuously incremented at different rates during mutually exclusive times for successively writing and reading the luminance component of a composite color television signal. A third memory address counter operable in recyclically variable count modes is provided for writing and reading the color-difference components at sequentially varying rates during a count cycle and generating an output pulse at the end of the count cycle. A phase comparator detects the phase difference between the horizontal sync pulse and the output pulse of the third address counter. A variable frequency oscillator is responsive to the phase difference for incrementing the third address counter at a rate corresponding to the phase difference.
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8.发明公开Synchronizing signal separating circuit for a colour video signal recording and reproducing apparatus 失效电路，用于对用于记录的装置中提取同步信号和再现彩色视频信号。
公开(公告)号：EP0132140A2
公开(公告)日：1985-01-23
申请号：EP84304810.9
申请日：1984-07-13
发明人： Nishimoto, Naomichi
CPC分类号： H04N9/81
摘要： A synchronizing signal separating circuit comprises an input terminal (60) for receiving a composite color video signal to be recorded at the time of a recording, and for receiving a time-division-multiplexed signal at the time of a reproduction, a measuring circuit (62-66) for measuring atime interval between a time when a horizontal synchrozing signal within an input signal received through the input terminal assumes a first predetermined value and a time when the horizontal synchronizing signal assumes a second predetermined value, a memory circuit (67) having various correcting data pre-stored therein, for producing one correcting data in accordance with thetime interval measured by the measuring circuit, and a signal generating circuit (68) for generating the separated horizontal synchronizing signal at a time position in accordance with the one correcting data which is produced from the memory circuit. The various correcting data are pre-stored in the memory circuit for each of various time intervals required for the horizontal synchronizing signal to reach the second predetermined value from the first predetermined value, and contain data for constantly generating a separated horizontal synchronizing signal at a time position which is approximately constant in each of the various time intervals.
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公开(公告)号：EP0312362B1
公开(公告)日：1994-03-23
申请号：EP88309611.7
申请日：1988-10-13
CPC分类号： H04N5/7826 , H04N5/928 , H04N9/8216
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