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1. 发明公开

EP0210867A3 Video and audio signal recording and/or reproducing apparatus 失效
标题翻译：视频和音频信号记录和/或复制设备
公开(公告)号：EP0210867A3
公开(公告)日：1988-10-19
申请号：EP86305860
申请日：1986-07-30
申请人： VICTOR COMPANY OF JAPAN, LIMITED
发明人： Higurashi, Seiji
IPC分类号： H04N09/83 , H04N05/92
CPC分类号： H04N9/802
摘要： A video and audio signal recording apparatus comprises a video block (12), a digital audio signal producing circuit (24), a modulating circuit (25, 26, 27) for generating an n-value frequency modulated signal, where n is an integer greater than or equal to three, and a recording circuit (17, 18, 32, 33) for recording the n-value frequency modulated signal and a frequency division multiplexed signal from the video block. A video and audio signal recording and reproducing apparatus comprises a first video block (12), a digital audio signal producing circuit (24), a modulating circuit (25, 26, 27) for generating an n-value frequency modulated signal, a recording and reproducing circuit (17, 18, 32, 33), first and second demodulating circuits (58, 59, 60), a decoder (61, 62R, 62L, 63R, 63L, 64R, 64L), and a second video block (52) for obtaining a reproduced video signal.

2. 发明公开

EP0172991A3 Method and device for recording and reproducing colour video signals with data lines 失效
标题翻译：用数据线记录和再现彩色视频信号的方法和装置
公开(公告)号：EP0172991A3
公开(公告)日：1987-11-11
申请号：EP85104904
申请日：1985-04-23
申请人： GRUNDIG E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co. KG.
发明人： Opelt, Christian
IPC分类号： H04N09/83 , H04N07/087
CPC分类号： H04N9/83
摘要： Eine Aufzeichnung von Farbvideosignalen mit Daten zeilen, wobei die obere Grenzfrequenz der digitalen Daten signale innerhalb der Datenzeilen die durch frequenzband begrenzende Einrichtungen bestimmte Grenzfrequenz der Luminanzanteile des Farbvideosignals überschreitet, auf Heimvideorecordern wird dadurch ermöglicht, dass der für die Frequenzmodulation des Luminanzsignals vorgesehene Hubbereich so gewählt wird, daß die Momentanfrequenz für den Weißpegel größer ist als die obere Grenzfrequenz der digitalen Signale, daß die frequenzbandbegrenzenden Ein richtungen im Luminanzkanal für die Zeit, in der die digita len Datensignale eintreffen, auf eine höhere Durchlaßband breite umgeschaltet werden, und daß der Chrominanzkanal für die Zeit, in der die digitalen Datensignale eintreffen, gesperrt wird.
摘要翻译：利用数据线记录彩色视频信号，其中数据线内的数字数据信号的上限截止频率超过由频带限制装置确定的彩色视频信号的亮度分量的截止频率，在国内视频可以通过选择提供用于亮度信号的频率调制的频率偏差范围使得白电平的瞬时频率大于数字信号的上限截止频率的事实来实现记录器，频带限制在接收数字数据信号的时间期间，亮度通道中的器件被切换到更宽的通带宽度，并且在接收数字数据信号的时间期间色度通道被阻挡。

3. 发明申请

WO1991016793A1 PROCESS AND DEVICE FOR IMAGE SIGNAL RECORDING OR REPRODUCTION 审中-公开
标题翻译：图像信号记录或复制的过程和设备
公开(公告)号：WO1991016793A1
公开(公告)日：1991-10-31
申请号：PCT/EP1991000676
申请日：1991-04-10
申请人： DEUTSCHE THOMSON-BRANDT GMBH , PLANTHOLT, Martin , KLUTH, Hans-Jürgen
发明人： DEUTSCHE THOMSON-BRANDT GMBH
IPC分类号： H04N09/83
CPC分类号： H04N9/7921 , H04N7/007 , H04N7/015 , H04N9/832
摘要： Letter-box television signals of 16:9 image format compatible with 4:3 receivers may contain, in the two edge strips above and below the active image, additional information needed by a 16:9 receiver in order to reproduce an image with a resolution close to that of the source signal. This additional information may be modulated on the colour carrier and therefore become unusable when recorded on a video recorder (approx. 600 kHz chrominance bandwidth). If the additional information is recorded in the edge strip lines, e.g. in S-VHS video recorders in combination with corresponding switchovers via the luminance channel, the entire bandwidth (about 5 MHz) of the additional information is retained.
摘要翻译：与4：3接收器兼容的16：9图像格式的信箱电视信号可以在活动图像上方和下方的两条边缘条带中包含16：9接收机所需的附加信息，以便以分辨率再现图像接近源信号。该附加信息可以在彩色载体上调制，因此当记录在录像机上（约600kHz色度带宽）时变得不可用。如果附加信息被记录在边缘条纹线中，例如，在S-VHS视频录像机中结合通过亮度通道的相应切换，保留附加信息的整个带宽（约5MHz）。

4. 发明申请

WO1991003910A1 VIDEO RECORDER FOR A TELEVISION SIGNAL WITH A NICAM SOUND CARRIER 审中-公开
标题翻译：视频记录仪用于电视信号与NICAM声音载体
公开(公告)号：WO1991003910A1
公开(公告)日：1991-03-21
申请号：PCT/EP1990001475
申请日：1990-09-03
申请人： DEUTSCHE THOMSON-BRANDT GMBH , SEEGERT, Bernhard
发明人： DEUTSCHE THOMSON-BRANDT GMBH
IPC分类号： H04N09/83
CPC分类号： H04N9/835
摘要： The aim is to obtain, with a video recorder, a NICAM sound carrier television signal which circuit-wise is simple and is free from distortion. The carrier is separated by frequency selection fromthe overall signal and recorded, without decoding, in addition with the frequency-modulated carrier. Application in particular for VHS video recorders for use with a television signal having a NICAM sound carrier.

5. 发明申请

WO1994026070A1 METHOD FOR COMPATIBLE RECORDING OR PLAYBACK OF TELEVISION SIGNALS 审中-公开
标题翻译：方法兼容的记录或电视信号再现
公开(公告)号：WO1994026070A1
公开(公告)日：1994-11-10
申请号：PCT/EP1994001125
申请日：1994-04-12
申请人： DEUTSCHE THOMSON-BRANDT GMBH
发明人： DEUTSCHE THOMSON-BRANDT GMBH , PLANTHOLT, Martin
IPC分类号： H04N09/83
CPC分类号： H04N5/913 , H04N9/7925 , H04N9/8233 , H04N9/832 , H04N9/877 , H04N2005/91321 , H04N2005/91328
摘要： A code word for signal type is provided for the transmission of PALplus signals. A partial decoding of the additonal PALplus information is provided for the recording of PALplus signals on S-VHS recorders such that the additional information is recorded as baseband signals. The code word can take into account a partial decoding that has already taken place. When PALplus signals are recorded on S-VHS recorders, the color signal can still only be reproduced in standard form. The playback process for PALplus signals with a reduction of cross effects is known as colour-plus and requires visual storage in the playback device. However, the capacity of this visual storage in a PALplus receiver-decoder is generally available during the playback of PALplus signals recorded on S-VHS recorders and can be advantageously used for quality-enhancing measures. For recorded PALplus signals the signal type code word is made to carry additional information which indicates to the playback device that a recorder PALplus signal is present and thus that a partial decoding, i.e. transposing of the additonal information into the baseband, has taken place. On the basis of this information a corresponding part of the signal decoding in the playback device will then no longer be activated. This expanded code word must now, for reasons of compatibility, be provided also for rerecorded PALplus signals of at least the second generation as well as for PALplus software placed on the market through cassettes. For such prerecorded software it is then possible, using the expanded code word in PALplus recorders, to initiate a lockout that ensures better copy protection.

6. 发明申请

WO1990000337A1 IMAGE STORAGE AND RETRIEVAL APPARATUS 审中-公开
标题翻译：图像存储和检索设备
公开(公告)号：WO1990000337A1
公开(公告)日：1990-01-11
申请号：PCT/US1988002224
申请日：1988-06-29
申请人： GODDARD, Larry, D.
IPC分类号： H04N09/83
CPC分类号： G11B27/11 , G11B19/28 , G11B27/029 , G11B27/105 , G11B2220/20 , G11B2220/65 , H04N1/2175 , H04N1/646 , H04N9/7973 , H04N9/83 , H04N9/89
摘要： There is disclosed a still image storage and retrieval apparatus that is capable of storing and retrieving a large number of images from a magnetic disk storage medium (12, 44). The apparatus uses a color under recording format, and the disk speed is synchronized to the video sync signal. The recording and playback signals (64, 66, 68, 70) are time base compensated to offset the effect of jitter in the disk speed by using reference frequencies (46) from the disk drive (18) to down-convert and up-convert the color signal. In another embodiment a reference signal from the disk (12, 14) is used to modulate the color signals. In another embodiment a digital ''wall along'' memory (420) stores time base error information during recording for time base error correction during playback. A one image memory (602) is also provided to allow for transition between images during playback.
摘要翻译：公开了能够从磁盘存储介质（12,44）存储和检索大量图像的静止图像存储和检索装置。该装置使用记录格式的颜色，并且磁盘速度与视频同步信号同步。通过使用来自磁盘驱动器（18）的参考频率（46）来对记录和重放信号（64,66,68,70）进行时基补偿，以抵消磁盘速度中的抖动的影响，以降低转换和上转换颜色信号。在另一个实施例中，来自盘（12,14）的参考信号用于调制彩色信号。在另一个实施例中，数字“沿”存储器（420）在记录期间存储时基误差信息，以便在回放期间进行时基误差校正。还提供一个图像存储器（602）以允许在重放期间图像之间的转换。

7. 发明公开

EP0209380A3 Recording and/or reproducing apparatus 失效
标题翻译：记录和/或再现装置
公开(公告)号：EP0209380A3
公开(公告)日：1988-11-23
申请号：EP86305485
申请日：1986-07-16
申请人： SONY CORPORATION
发明人： Nakamura, Shinji Patents Division , Oshima, Tomohiro Patents Division , Moriwake, Katsuakira Patents Division
IPC分类号： H04N09/82 , H04N09/83
CPC分类号： B82Y15/00 , H04N9/8355
摘要： A helical-scan video tape recorder records time-axis-compressed PCM audio signals on auxiliary recording tracks on a recording medium and has a synthesisation circuit (30) which mixes normal frequency-modulated audio signals, recorded on video tracks with the video signals, with the time-axis-compressed PCM audio signals before reproduction. The PCM audio signals require digital processing for time-axis compression before recording and subsequent expansion upon reproduction, and so are recorded and reproduced later than the frequency-modulated audio signals. Thus, when reproduced, the PCM audio component lags behind the frequency-modulated audio component, resulting in an echo effect. Adjustment of the relative amplitude levels of the two types of audio signals during synthesisation produces acoustical effects that can simulate the acoustics of a concert hall.
摘要翻译：一种螺旋扫描的磁带录像机将时间轴压缩的PCM音频信号记录在记录介质上的辅助记录磁道上，并具有一个合成电路（30），用于将记录在视频磁道上的正常频率调制音频信号与视频信号混合，与再现之前的时间轴压缩PCM音频信号。 PCM音频信号需要在记录之前进行时间轴压缩的数字处理，并在再现时进行随后的扩展，并且比频率调制音频信号晚记录和再现。因此，当再现时，PCM音频分量滞后于调频音频分量，导致回声效应。在合成期间调节两种类型的音频信号的相对幅度水平产生可以模拟音乐厅的声学效果的声学效果。

8. 发明公开

EP0159871A3 Magnetic recording and playback apparatus for teletext signals 失效
标题翻译：用于电话信号的磁记录和播放装置
公开(公告)号：EP0159871A3
公开(公告)日：1987-11-04
申请号：EP85302565
申请日：1985-04-12
申请人： Matsushita Electric Industrial Co., Ltd.
发明人： Honjo, Masahiro , Hashima, Akio
IPC分类号： H04N09/82 , H04N09/83
CPC分类号： H04N9/83 , H04N9/8238
摘要： A magnetic recording and playback apparatus for teletext signal which accurately records and reproduces the teletext signal superposed within the vertical blanking period of television signal, comprising at least one wide band filter (2), at least one narrow band filter (3), a filter selection switch (4, 17) which switches at least one filter for a luminance signal processing system to the wide band filter (2) and at least one filter for a chrominance signal processing system to the narrow band filter (15), and a control circuit (18) which generates a control signal for controlling the filter selection switch (4, 17). The control circuit generates the control signal only during a specified period where the teletext signal is superposed. In case a comb filter is used, a switch for selectively passing an output of the comb filter and an input video signal to the succeeding stages and a control circuit for producing a control signal to allow the input video signal to pass during a specified period where the teletext signal is superposed are provided.

9. 发明公开

EP0154221A3 Video signal reproducing circuit for a video tape recorder 失效
标题翻译：视频信号再生录像机的录像带
公开(公告)号：EP0154221A3
公开(公告)日：1987-08-19
申请号：EP85101579
申请日：1985-02-13
申请人： SONY CORPORATION
发明人： Sato, Ichitaro c/o Sony Corporation
IPC分类号： H04N09/83
CPC分类号： H04N9/832 , H04N5/9205 , H04N9/7921 , H04N9/833
摘要： An apparatus for reproducing from a magnetic tape (T) first and second video signals (S cv .S sp ) which are frequency modulated on a carrier, the first video signal having the center frequency of the carrier lower than that of the second video signal is disclosed, which includes a demodulator (3) for demodulating the first and second video signals, a first low-pass filter (4) for filtering the first video signal demod- utated by the demodulator, the first low-pass filter having a first cut-off frequency (F 2 ), a second low-pass filter (5) for filtering the second video signal demodulated by the demod- utator (3), the second low-pass filter having a second cut-off frequency (F 1 ) which is lower than the first cut-off frequency (F 2 ), a detector (20) connected prior to the demodulator (3) for detecting whether reproduced video signal is the first or second video signal and for generating a control signal in reeponse thereto and a switching circuit (6) for sypplying the cideo signals to an output terminal in accordance with the connteol signal from the detector. There is also disclosed an apparatus for recording and reproducing a video signal, which includes a first modulator for frequency modulating a video signal with a first frequency carrier to produce a first video signal, a second modulator for frequency-modulating the video signal with a second frequency carrier to produce a second video signal, a recording head for recording the first and second video signals frequency-modulated by the first and second mod- ulafors on a magnetic tape, a reproducing head for reproducing the first and second video signals recorded on the magnetic tape, a detector for detecting whether the video signal reproduced from the magnetic tape is frequency-modulated with the first frequency carrier or with the second frequency carrier, and for generating a control signal, and a first switching circuit of selectively activating the first and second modulator in accordance with the control signal, a frequency of the carrier used in recording subsequent to reproducing being coincident with a frequency of the carrier used in the reproducing.

10. 发明公开

EP0140716A3 Method and apparatus for reproducing a chrominance signal 失效
标题翻译：用于再现色彩信号的方法和装置
公开(公告)号：EP0140716A3
公开(公告)日：1986-06-25
申请号：EP84307529
申请日：1984-11-01
申请人： Matsushita Electric Industrial Co., Ltd.
发明人： Nakagawa, Yukio , Tomita, Masao , Matsumoto, Tokikazu
IPC分类号： H04N09/83
CPC分类号： H04N9/8707 , H04N9/831
摘要： A low-range-converted carrier chrominance signal (C L ) is demodulated (17) and a base-band signal is passed through a holding circuit and a comb filter (18a, 18b) in converting the low-range-converted carrier chrominance signal into a base-band chrominance signal or a carrier chrominance signal having a prescribed subcarrier frequency, for thereby removing an unwanted side band component and a crosstalk from adjacent tracks, which are produced upon demodulation, so that a low-pass or bandpass filter (21) for removing a side band produced by the conversion may be dispensed with or may have less strict characteristics. Furthermore, the carrier chrominance signal is generated by a means (22, 23, 24) for synchronising the low-range-converted chrominance signal (62) in phase with the low-range conversion carrier, sampling (16) the low-range-converted i chrominance signal with a first clock signal (eF c ) having a frequency which is a multiple of that of the low-range conversion carrier, converting the sampled data into two color difference signal sampled data (e, f) and synthesizing the two color difference signal sampled data (e, f) for issuance with a reference clock signal (4Fsc) which is n times the carrier frequency of the carrier chrominance signal. With this arrangement, the number of circuit components required is reduced and the circuit components can easily be made as a a semiconductor device.

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