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公开(公告)号：US4494146A
公开(公告)日：1985-01-15
申请号：US515851
申请日：1983-07-21
CPC分类号： H04N5/148
摘要： A kinescope driver amplifier comprises a resistive feedback network coupled from the output to the input of the amplifier. The feedback network includes first and second series resistor of mutually different values. The larger value resistor is connected to amplifier output, and the smaller value resistor is connected to the amplifier input.
摘要翻译： 显像管驱动器放大器包括从输出端耦合到放大器的输入的电阻反馈网络。 反馈网络包括互不相同值的第一和第二串联电阻。 较大的值电阻连接到放大器输出，较小的值电阻连接到放大器输入。
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2.发明授权Method and apparatus for providing electronic program guide information from a single electronic program guide server 失效用于从单个电子节目指南服务器提供电子节目指南信息的方法和装置
公开(公告)号：US6020880A
公开(公告)日：2000-02-01
申请号：US795915
申请日：1997-02-05
IPC分类号： G06F13/00 , H04N7/025 , H04N7/03 , H04N7/035 , H04N7/16 , H04N21/258 , H04N21/262 , H04N21/2665 , H04N21/2668 , H04N21/45 , H04N21/454 , H04N21/84 , H04N7/173
CPC分类号： H04N21/2665 , H04N21/25883 , H04N21/26283 , H04N21/2668 , H04N21/4532 , H04N21/454 , H04N21/84 , H04N7/163
摘要： A method and apparatus for requesting, receiving, processing, and providing information from a single source to a television viewer. An information provider is accessed via a communications link and specific data, which is separate and distinct from video signals received by the television receiver, is downloaded to the television receiver. The data provided by the information provider is database information with minimal formatting and does not contain any graphical overhead. Requests for information from the information provider may be on demand or at a predetermined time. The information provided may be filtered by the information provider and/or television receiver based on selected program categories and/or a user provided profile.
摘要翻译： 一种用于从单个来源向电视观众请求，接收，处理和提供信息的方法和装置。 通过通信链路访问信息提供者，并将与电视接收机接收的视频信号分开且不同的特定数据下载到电视接收机。 信息提供者提供的数据是具有最小格式的数据库信息，不包含任何图形开销。 来自信息提供者的信息的请求可以是按需或在预定的时间。 所提供的信息可以由信息提供者和/或电视接收机根据所选择的节目类别和/或用户提供的简档来过滤。
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公开(公告)号：US5532748A
公开(公告)日：1996-07-02
申请号：US414334
申请日：1995-03-31
IPC分类号： H04N5/21 , H04N5/44 , H04N7/08 , H04N21/2368 , H04N21/434 , H04N21/438 , H04N7/015 , H04N7/06
CPC分类号： H04N21/4384 , H04N21/42638 , H04N5/4401 , H04N7/08 , H04N5/211
摘要： A system and method for providing a video signal during the delay time between when a new channel is selected and when the digital picture is acquired and displayed is disclosed. In particular, the system provides an NTSC-like analog video signal along with a conventional digital television signal such that when a user initially makes a new channel selection, the analog video signal, which can be quickly and easily decoded, is presented for display until the digital television signal is completely decoded and acquired. As soon as the digital television signal is ready for display, the displayed signal switches from the analog video signal to the digital television signal. For purposes of conserving frequency spectrum, the analog video signal is a simple NTSC-like monochrome (i.e., black and white) signal and limited to a 1 MHz band of the available 6 MHz spectrum allocated for each channel.
摘要翻译： 公开了在选择新频道和获取和显示数字图像之间的延迟时间期间提供视频信号的系统和方法。 特别地，该系统提供了类似于NTSC的模拟视频信号以及传统的数字电视信号，使得当用户最初进行新的频道选择时，呈现可快速且容易地解码的模拟视频信号用于显示直到 数字电视信号被完全解码和获取。 一旦数字电视信号准备好显示，显示的信号就从模拟视频信号切换到数字电视信号。 为了节省频谱，模拟视频信号是简单的NTSC制单色（即黑白）信号，并且限于分配给每个通道的可用6MHz频谱的1MHz频带。
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公开(公告)号：US4959716A
公开(公告)日：1990-09-25
申请号：US436521
申请日：1989-11-14
申请人： Anthony R. Bugni , Larry G. Phillips , Ted A. Darby , Saiprasad V. Naimpally , William S. Burdick
发明人： Anthony R. Bugni , Larry G. Phillips , Ted A. Darby , Saiprasad V. Naimpally , William S. Burdick
摘要： A T.V. input source identifying circuit for determining whether a video signal is from a videotape player or a broadcast signal by measuring jitter of vertical synchronization pulses and by measuring noise. The video signal includes a plurality of frames with each frame including a plurality of fields. In one embodiment of the present invention, timing data is generated corresponding to the period of at least one selected field in each of a plurality of selected frames. From this timing data, a maximum number is stored that corresponds to the greatest period and a minimum number is stored that corresponds to the least period of the selected fields. The minimum number is subtracted from the maximum number and the difference is compared to a threshold to determine the type of video signal. In an alternate embodiment, numbers corresponding to fields from successive frames are compared by a subtraction and the difference is compared to a threshold in order to make a decision as to the type of video signal. In both of the aforementioned embodiments, the noise level of the video signal is constantly monitored. When the noise is above a threshold, the local signal is generated regardless of the information derived from the timing data.
摘要翻译： T.V.输入源识别电路，用于通过测量垂直同步脉冲的抖动和测量噪声来确定视频信号是来自录像带播放器还是广播信号。 视频信号包括多个帧，每帧包括多个场。 在本发明的一个实施例中，对应于多个所选帧中的每一个中的至少一个所选场的周期来生成定时数据。 从该定时数据，存储对应于最大周期的最大数量，并且存储对应于所选字段的最小周期的最小数量。 从最大数字减去最小数量，并将差值与阈值进行比较，以确定视频信号的类型。 在替代实施例中，对应于来自连续帧的字段的数字通过减法进行比较，并将该差异与阈值进行比较，以便作出关于视频信号类型的决定。 在上述两个实施例中，不断地监视视频信号的噪声电平。 当噪声高于阈值时，无论从定时数据导出的信息如何，都会产生本地信号。
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公开(公告)号：US4682234A
公开(公告)日：1987-07-21
申请号：US815347
申请日：1985-12-31
CPC分类号： H04N5/45
摘要： When the second channel in a picture-in-picture (PIP) receiver is turned off by the user, it is automatically tuned to the station selected for the first channel. Both channels thus process a signal having the same picture information. After partial processing, the two signals are averaged, creating a signal which has the same picture signal components but substantially reduced noise components. This reduced noise signal is then subjected to the remaining standard processing in the first channel and applied to the picture tube.
摘要翻译： 当用户将画中画（PIP）接收机中的第二声道关闭时，会自动调谐到为第一声道选择的电台。 因此，这两个通道处理具有相同图像信息的信号。 在部分处理之后，对两个信号进行平均，产生具有相同图像信号分量但显着降低的噪声分量的信号。 然后将该降低的噪声信号在第一通道中进行剩余的标准处理并施加到显像管。
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公开(公告)号：US5926573A
公开(公告)日：1999-07-20
申请号：US624263
申请日：1996-03-29
IPC分类号： H04N7/30 , G06T3/40 , G06T9/00 , H04N1/387 , H04N1/41 , H04N5/14 , H04N7/26 , H04N7/46 , H04N7/50 , G06K9/36 , H04N7/12
CPC分类号： G06T3/4084 , H04N19/102 , H04N19/107 , H04N19/112 , H04N19/122 , H04N19/132 , H04N19/137 , H04N19/16 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/186 , H04N19/40 , H04N19/48 , H04N19/59 , H04N19/61 , H04N5/14
摘要： An apparatus or transforming the resolution of an image from a first image resolution to a second image resolution using operations in the spatial frequency domain. The apparatus converts the bit-stream format which defines the first image and can be used to, for example, change the resolution of an MPEG encoded video signal by converting the MPED bitstream. The apparatus generates converted macroblocks from original macroblocks. During conversion, the apparatus determines whether the converted macroblock is (1) intra or non-intra coded, (2) P-coded or B-coded, and (3) in field format or frame format. The apparatus may also include the selection of a motion vector for the converted macroblock from the original macroblocks. Further, the apparatus may also map a first group of transform values which represent the image at the first image resolution to a second group of transform values which represent the image the second image resolution in the spatial frequency domain.
摘要翻译： 一种装置，或者使用空间频域中的操作将图像的分辨率从第一图像分辨率转换为第二图像分辨率。 设备转换定义第一图像的比特流格式，并且可以用于例如通过转换MPED比特流来改变MPEG编码视频信号的分辨率。 该装置从原始宏块生成转换的宏块。 在转换期间，装置确定转换的宏块是（1）帧内还是非帧内编码，（2）P编码或B编码，以及（3）以场格式或帧格式。 该装置还可以包括从原始宏块中为转换的宏块选择运动矢量。 此外，设备还可以将表示第一图像分辨率的图像的第一组变换值映射到表示空间频域中的第二图像分辨率的图像的第二组变换值。
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7.发明授权Method and apparatus for sending private data instead of stuffing bits in an MPEG bit stream 失效用于发送专用数据而不是填充比特在MPEG比特流中的方法和装置
公开(公告)号：US5650825A
公开(公告)日：1997-07-22
申请号：US414526
申请日：1995-03-31
申请人： Saiprasad V. Naimpally , Ren Egawa
发明人： Saiprasad V. Naimpally , Ren Egawa
IPC分类号： H04N21/235 , H04N21/236 , H04N21/434 , H04N21/435 , H04N7/00 , H04N11/00
CPC分类号： H04N21/23608
摘要： An apparatus and method, applicable to variable bit rate video and constant bit rate video, is disclosed for replacing "stuffing bytes" with private data. The invention takes advantage of the otherwise wasted resources dedicated to "stuffing" in a data stream in order to insert private data. This is accomplished by inserting useful private data in a Transport Stream instead of the stuffing bits. That is, effectively, a re-multiplexing operation occurs where, based on the existence of certain conditions in a Transport Packet (e.g., stuffing bytes exist), the information necessary to replace stuffing bytes with private data yet still comply with established standards is accomplished. This data generally is referred to as privatestuff data in order to distinguish it from typical private data which may otherwise be encoded into a Transport Stream. The stuffing bytes removed from the Transport Packet may come from an adaptation field in the Transport Header or directly from the Transport Payload or both.
摘要翻译： 公开了适用于可变比特率视频和恒定比特率视频的装置和方法，用私有数据替换“填充字节”。 本发明利用专用于“填充”在数据流中的浪费的资源，以便插入专用数据。 这通过在传输流中插入有用的私有数据而不是填充位来实现。 也就是说，实际上，在基于传输分组中存在某些条件（例如，填充字节存在））的情况下，实现了用私有数据替换填充字节仍然符合既定标准所必需的信息 。 该数据通常被称为私有数据，以便将其与可能被编码为传输流的典型私有数据区分开来。 从传输分组中删除的填充字节可能来自传输报头中的自适应字段，或直接来自传输有效载荷或两者。
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8.发明授权System and method for transmitting digital data in the overscan portion of a video signal 失效在视频信号的过扫描部分中发送数字数据的系统和方法
公开(公告)号：US5309235A
公开(公告)日：1994-05-03
申请号：US951101
申请日：1992-09-25
CPC分类号： H04N7/081
摘要： A system and method for transmitting digital data in the horizontal overscan portion of a composite video signal is presented. A source supplies digital data which is encoded by a 32-state QAM encoder using a symbol clock having a frequency 4f.sub.sc, 4 times the color subcarrier frequency (f.sub.sc), then the encoded data is quadrature amplitude modulated using a carrier signal with a frequency of f.sub.sc /2. The modulated digital data replaces the video signal in the horizontal and vertical overscan portions of the baseband video signal. The video signal is received, the modulated digital data is extracted from the video signal, demodulated using QAM techniques, and decoded with a reconstructed version of the symbol clock.
摘要翻译： 提出了一种用于在复合视频信号的水平过扫描部分中发送数字数据的系统和方法。 源提供由32状态QAM编码器使用具有4倍于彩色副载波频率（fsc）的频率4fsc的符号时钟编码的数字数据，然后使用载波信号进行正交幅度调制，频率为 fsc / 2。 调制数字数据替代基带视频信号的水平和垂直过扫描部分中的视频信号。 接收视频信号，从视频信号中提取调制数字数据，使用QAM技术进行解调，并用符号时钟的重构版本进行解码。
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9.发明授权
公开(公告)号：US5294974A
公开(公告)日：1994-03-15
申请号：US920184
申请日：1992-07-24
CPC分类号： H04N11/044 , H04N19/126 , H04N19/176 , H04N19/186 , H04N19/60 , H04N19/61 , H04N19/146 , H04N19/149 , H04N19/15 , H04N19/152
摘要： A video signal encoder uses an encoding system such as that developed by the Moving Picture Experts Group (MPEG). A key component of this encoding system increases the quantization step size of image data, thus decreasing its quantization resolution, to reduce the number of bits used to encode the data. Apparatus according to the present invention, monitors the color information being encoded and inhibits or reduces any increase in quantization step size for the luminance component and the color component of the image when signals representing saturated or nearly saturated red image components are being encoded.
摘要翻译： 视频信号编码器使用诸如由运动图像专家组（MPEG）开发的编码系统。 该编码系统的关键部件增加图像数据的量化步长，从而降低其量化分辨率，以减少用于对数据进行编码的位数。 根据本发明的设备监视正被编码的颜色信息，并且当正在对表示饱和或接近饱和的红色图像分量的信号进行编码时，抑制或减少图像的亮度分量和图像的颜色分量的量化步长的任何增加。
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公开(公告)号：US4809069A
公开(公告)日：1989-02-28
申请号：US166279
申请日：1988-03-10
CPC分类号： H04N5/4448 , H04N5/21 , H04N5/45 , H04N7/012 , H04N9/646
摘要： A digital television processing section capable of picture enhancement, progressive scanning, and multiple picture-in-picture processing is provided. The preferred digital television processing section preferably comprises a picture enhancement processor (PEP), a progressive scan processor, a picture in picture processor, at least one multiplexing means, and a common memory means. The PEP broadly comprises a parameter control means, a memory input select means, and mixer for obtaining current video data, delayed video data from the common memory, and control information from the control means, and for processing the obtained data and information to provide a signal to the progressive scan processor. In various modes of operation, the mixer also provides the signal to the memory input select means which forwards the information to the common memory. The common memory is used as a field delay device and feeds a delayed signal forward to the progressive scan processor. The progressive scan processor then utilizes the current signal and the delayed signal to provide a non-interlaced display. The delayed signal from the common memory may also be fed back to the mixer of the PEP so that noise reduction and/or cross-color effect reduction may be accomplished or so that stored pictures may be displayed. The picture-in-picture (PIP) processor together with a first multiplexer permits main and secondary (PIP) video data to be supplied as current video data to the PEP. Or if desired, up to nine PIPs may constitute the video field.
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