公开(公告)号：US20050044322A1

公开(公告)日：2005-02-24

申请号：US10501530

申请日：2002-12-23

Applicant: Reiner Noske

Inventor： Reiner Noske

IPC: G06F12/00 ,  G06F12/04 ,  H04N5/907 ,  H04N9/896

CPC classification number: H04N9/896

Abstract: The invention provides a method for storing video signals at a first rate and reading the stored video signals at a second rate. According to an embodiment of the method, the video signals to be stored are compressed. The compressed video signals are stored in a memory at a first rate. The compressed video signals a read from the memory into a buffer at the first rate. The video signals stored in the buffer are read from the buffer at a second rate such that the video signals are decompressed.

Abstract translation: 本发明提供一种用于以第一速率存储视频信号并以第二速率读取所存储的视频信号的方法。 根据该方法的实施例，要存储的视频信号被压缩。 压缩的视频信号以第一速率存储在存储器中。 压缩视频以从第一速率向存储器读取缓冲器。 存储在缓冲器中的视频信号以第二速率从缓冲器读取，使得视频信号被解压缩。

公开(公告)号：US20040234233A1

公开(公告)日：2004-11-25

申请号：US10874073

申请日：2004-06-22

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lee Jesuk

IPC: H04N009/89 ,  H04N005/95

CPC classification number: H04N9/896 ,  H04N5/78263

Abstract: A jitter correcting apparatus and method for a video signal in a video signal reproduction system includes a digital video decoder for demodulating an externally-applied video signal and a phase-locked loop for generating a first clock signal synchronized with the video signal. The system includes an address generator, a comparator and a dual port memory device. The address generator generates a write address for writing the video signal in response to the first clock signal, generates a read address for reading the video signal in response to a second clock signal having a fixed frequency, and corrects the write and read addresses in response to a head switching signal and first and second comparison signals. The comparator compares the write address with the read address and generates the first comparison signal and the second comparison signal according to a result of the comparison. The dual port memory device stores the video signal at a location corresponding to the write address in response to the first clock signal and outputs a video signal stored at a location corresponding to the read address in response to the second clock signal. Accordingly, the jitter of a video signal, which may occur while processing an analog video signal in a digital mode, is corrected using a memory device having a small capacity, thereby allowing a video image to be stably output.

公开(公告)号：US5673356A

公开(公告)日：1997-09-30

申请号：US378105

申请日：1995-01-26

Applicant: Arie Marinus Wijnen

Inventor： Arie Marinus Wijnen

IPC: H04N5/913 ,  H04N9/896 ,  H04N5/76 ,  H04N7/167

CPC classification number: H04N5/913 ,  H04N2005/91314 ,  H04N2005/91385 ,  H04N9/896

Abstract: A method and apparatus are provided for preventing unauthorized recording of video programs on tape, in which the frame repetition frequency of the signals to be transmitted is changed in such a manner that, on the one hand, the operation of a television apparatus used for reproducing said signals will not be disturbed, but that, on the other hand, the cooperation between the driving means for the tape and the recording head displacement in the tape recording apparatus will be disturbed. The apparatus comprises an input stage (4) for digitalizing the video signals, a shift memory (5), an output stage (8) for converting the video signals to be used into analog form, an input control stage (6) for the memory (5) and an output control stage (7) for the memory (5). The control frequency of the input control stage (6) is adapted to the frame repetition frequency of the digitalized video signals to be stored in the memory (5). The control frequency of the output control stage (7) is different from the control frequency of the input control stage (6), and the capacity of the memory (5) is sufficient to compensate the differences between the signal input and output.

Abstract translation: 提供一种方法和装置，用于防止在磁带上的视频节目的未经授权的记录，其中要发送的信号的帧重复频率以这样的方式改变：一方面，用于再现的电视设备的操作 所述信号不会受到干扰，但另一方面，磁带驱动装置与磁带记录装置中的记录头位移之间的协调将受到干扰。 该装置包括用于数字化视频信号的输入级（4），移位存储器（5），用于将要使用的视频信号转换为模拟形式的输出级（8），用于存储器的输入控制级（6） （5）和用于存储器（5）的输出控制级（7）。 输入控制级（6）的控制频率适合要存储在存储器（5）中的数字化视频信号的帧重复频率。 输出控制级（7）的控制频率与输入控制级（6）的控制频率不同，存储器（5）的容量足以补偿信号输入和输出之间的差异。

公开(公告)号：US5412481A

公开(公告)日：1995-05-02

申请号：US839542

申请日：1992-02-24

Applicant: Jung W. Ko ,  Alvin R. Balaban ,  Christopher H. Strolle

Inventor： Jung W. Ko ,  Alvin R. Balaban ,  Christopher H. Strolle

IPC: H04N5/956 ,  H04N5/935 ,  H04N9/79 ,  H04N9/797 ,  H04N9/82 ,  H04N9/83 ,  H04N9/84 ,  H04N9/896 ,  H04N9/898

CPC classification number: H04N9/797 ,  H04N9/7904 ,  H04N9/84 ,  H04N9/896 ,  H04N5/935 ,  H04N9/7921 ,  H04N9/8205 ,  H04N9/83 ,  H04N9/898

Abstract: A video recording/playback system includes in its recording electronics time-base correctors both for luma signal and for color-under signal, the time-base corrector for luma signal being used to facilitate comb filtering and the time-base corrector for chroma signal being used to maintain luma/chroma tracking during recording. The video recording/playback system includes in its playback electronics time-base correctors both for played-back luma signal and for played-back color-under signal, the time-base corrector for played-back luma signal being used to facilitate comb filtering and the time-base corrector for played-back chroma signal being used to maintain luma/chroma tracking during playback. With appropriate switching, the same pair of time-base correctors can be used in both the recording and the playback electronics of a video recording/playback system. A detector in the recording electronics determines when there is substantial time-base error in the video signal received for recording and conditions the comb filtering of the luma signal during recording to be carried out in just the spatial domain and not in the frame-to-frame time domain. The recording electronics includes circuitry for signaling the playback electronics, via a recorded signal, that the comb filtering of the luma signal during recording was carried out in just the spatial domain and not in the frame-to-frame time domain. The playback electronics responds to such signaling to adapt the comb filtering of the played-back luma signal to suit.

Abstract translation: 视频记录/回放系统在其记录电子装置中包括用于亮度信号和彩色信号的时基校正器，用于亮度信号的时基校正器用于促进梳状滤波，并且色度信号的时基校正器 用于在录制过程中维持亮度/色度跟踪。 视频记录/回放系统在其回放电子装置中包括用于回放亮度信号和回放彩色信号的时基校正器，用于回放亮度信号的时基校正器用于促进梳状滤波， 播放色度信号的时基校正器用于在播放期间保持亮度/色度跟踪。 通过适当的切换，可以在视频记录/回放系统的记录和回放电子设备中使用同一对时基校正器。 记录电子装置中的检测器确定何时在接收的用于记录的视频信号中存在实质的时基误差，并且在记录期间对亮度信号的梳状滤波进行调节，以便仅在空间域中执行，而不是在帧 - 帧时域。 记录电子装置包括用于通过记录信号发信号通知回放电子器件的电路，即在记录期间，仅在空间域而不是在帧到帧的时域中进行亮度信号的梳状滤波。 播放电子设备响应于这种信令以适应回放亮度信号的梳状滤波。

公开(公告)号：US5258851A

公开(公告)日：1993-11-02

申请号：US631686

申请日：1990-12-21

Applicant: Takayoshi Yamaguchi

Inventor： Takayoshi Yamaguchi

IPC: H04N9/81 ,  H04N9/873 ,  H04N9/896 ,  H04N9/89 ,  H04N7/04 ,  H04N9/79 ,  H04N11/06

CPC classification number: H04N9/81 ,  H04N9/873 ,  H04N9/896

Abstract: In a VTR for TCI signals, horizontal synchronizing signal with different time width is inserted for identifying the chrominance signal component multiplexed in each recording line at the time of recording. At the time of reproduction, this horizontal synchronizing signal is separated to generate a signal identifying the chrominance signal component in the corresponding recording line. The chrominance signal sequence in the reproduced TCI signal indicated by the identification signal and the proper sequence of the chrominance signal process are compared, where both sequences are made to coincide with each other when there is discrepancy between both sequences to prevent the generation of hue error on a monitor.

公开(公告)号：US5218449A

公开(公告)日：1993-06-08

申请号：US861580

申请日：1992-04-01

Applicant: Jung W. Ko ,  Alvin R. Balaban ,  Christopher H. Strolle

Inventor： Jung W. Ko ,  Alvin R. Balaban ,  Christopher H. Strolle

IPC: H04N9/83 ,  H04N5/935 ,  H04N9/79 ,  H04N9/797 ,  H04N9/82 ,  H04N9/84 ,  H04N9/896 ,  H04N9/898

CPC classification number: H04N9/797 ,  H04N9/84 ,  H04N9/896 ,  H04N5/935 ,  H04N9/7921 ,  H04N9/8205 ,  H04N9/898

Abstract: A video recorder for recording composite video signals includes an analog to digital converter for digitizing samples of the composite video signal being recorded. A sync separator separates horizontal synchronizing information from the composite video signal being recorded. Filtering separates the chrominance information portion of the composite video signal being recorded, and a down-converter mixes that separated chrominance information with a nervous carrier signal thereby to generate a color-under signal. A controlled oscillator generates a succession of pixel clock signals at a rate the frequency and phase of which are determined in accordance with an oscillator control signal, the rate being more than twice the frequency of the nervous carrier signal and setting the rate of the sampling by the analog to digital converter. A counter counts the number of pixel clock signals supplied by the controlled oscillator, and a frequency divider divides the count by a prescribed factor. A discriminator determines when the resulting submultiple of the count differs in frequency or phase from the horizontal synchronization separated from the composite video signal being recorded, to develop an error signal that is low-pass filtered to generate the oscillator control signal. This completes a phase-lock loop connection including the controlled oscillator, the counter, the frequency divider, the discriminator and the low-pass filter, which loop governs sampling during the analog to digital conversion of the composite video signal being recorded. The nervous carrier signal is derived from this same phase-lock loop.

Abstract translation: 用于记录复合视频信号的视频记录器包括用于数字化所记录的复合视频信号的样本的模数转换器。 同步分离器从正在记录的复合视频信号中分离出水平同步信息。 滤波分离正在记录的复合视频信号的色度信息部分，下变频器将分离的色度信息与神经载波信号进行混合，从而产生彩色信号。 受控振荡器以其频率和相位根据振荡器控制信号确定的速率产生一系列像素时钟信号，速率大于神经载波信号频率的两倍，并将采样速率设置为 模数转换器。 计数器对由受控振荡器提供的像素时钟信号的数量进行计数，并且分频器将计数器除以规定的因子。 鉴别器确定所得到的计数的次数与频率或相位与正在记录的复合视频信号分离的水平同步的差异，以产生低通滤波以产生振荡器控制信号的误差信号。 这完成了包括受控振荡器，计数器，分频器，鉴频器和低通滤波器的锁相环路连接，该回路控制在被记录的复合视频信号的模数转换期间的采样。 神经载波信号来源于同一个锁相环。

公开(公告)号：US5206726A

公开(公告)日：1993-04-27

申请号：US694412

申请日：1991-05-01

Applicant: Yoshiyuki Okuda

Inventor： Yoshiyuki Okuda

IPC: H04N5/956 ,  G11B20/02 ,  H04N9/896

CPC classification number: H04N9/896

Abstract: A time base corrector of composite video signal using memory. In the back porch and front porch of a composite video signal, offset voltages having polarities opposite to each other and a level corresponding to the level of a phase error signal are added to the phase error signal and are used as an input signal of a VCO for generating a writing clock. As the result, jitter components which cannot be removed by the PLL only can be eliminated.

Abstract translation: 使用存储器的复合视频信号的时基校正器。 在复合视频信号的后沿和前沿中，具有彼此相反极性的偏移电压和与相位误差信号的电平相对应的电平被加到相位误差信号中，并被用作VCO的输入信号 用于产生写入时钟。 结果，可以消除仅由PLL除去的抖动分量。

公开(公告)号：US5164838A

公开(公告)日：1992-11-17

申请号：US687247

申请日：1991-04-18

Applicant: Yoshiyuki Okuda

Inventor： Yoshiyuki Okuda

IPC: H04N5/95 ,  G11B19/28 ,  G11B20/02 ,  G11B20/22 ,  H04N5/932 ,  H04N9/89 ,  H04N9/896

CPC classification number: G11B19/28 ,  G11B20/225 ,  H04N5/932 ,  H04N9/89 ,  H04N9/896

Abstract: A time base error signal generating apparatus which outputs a phase difference signal representing a phase difference between a horizontal sync signal and a reference signal as a time base error signal. In accordance with the phase status of a vertical sync signal with respect to the reference signal, supply of the horizontal sync signal or reference signal to a phase comparator is inhibited. Therefore, a single, phase comparator can detect the phase difference while avoiding problems such as a phase offset.

公开(公告)号：US4959825A

公开(公告)日：1990-09-25

申请号：US209812

申请日：1988-06-22

Applicant: Takashi Okano

Inventor： Takashi Okano

IPC: G11B20/02 ,  H04N5/956 ,  H04N9/896

CPC classification number: H04N9/896

Abstract: A recorded information reproducing apparatus, such as a video disk player, has a memory for storing video data of one field. The reproducing apparatus generates an address access detection signal when the absolute value of the difference between a generated write address and a generated read address of the memory decreases less than a predetermined value. The address access detection signal serves to change the phase difference between the synchronous signal in the read video signal and a standard synchronous signal which is synchronized with the read clock signal, thereby finely adjusting the time axis and changing the synchronization.

Abstract translation: 诸如视频盘播放器的记录信息再现装置具有用于存储一场视频数据的存储器。 当生成的写入地址和生成的存储的读取地址之间的差异的绝对值减小到小于预定值时，再现装置产生地址访问检测信号。 地址访问检测信号用于改变读视频信号中的同步信号与与读时钟信号同步的标准同步信号之间的相位差，从而精细调整时间轴并改变同步。

公开(公告)号：US4907070A

公开(公告)日：1990-03-06

申请号：US355034

申请日：1989-05-16

Applicant: Jan S. Wesolowski

Inventor： Jan S. Wesolowski

IPC: H04N9/896

CPC classification number: H04N9/896

Abstract: A time base corrector is comprised of a plurality of system function modules implementing the functions for time base correcting an analog composite color video signal with a stable reference video signal. The system function modules obtain control data and communicate status data to a system control through a plurality of module function registers located in each module. The module function registers are connected to and selectable by a system bus of a microprocessor. The microprocessor has the module function registers mapped as addresses in its memory space to provide an architecture for communication and control of each function module by the system control.

Abstract translation: 时基校正器由多个系统功能模块构成，该多个系统功能模块实现用于对具有稳定参考视频信号的模拟复合彩色视频信号进行时基校正的功能。 系统功能模块通过位于每个模块中的多个模块功能寄存器获取控制数据并将状态数据传送给系统控制。 模块功能寄存器通过微处理器的系统总线连接和选择。 微处理器将模块功能寄存器映射为其存储器空间中的地址，以提供通过系统控制来对每个功能模块进行通信和控制的架构。