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公开(公告)号：US4575650A
公开(公告)日：1986-03-11
申请号：US518461
申请日：1983-07-29
IPC分类号： H03H11/04 , H03K5/1252 , H03K19/003 , H03K5/00
CPC分类号： H03K5/1252 , H03H11/04 , H03K19/00353
摘要： A signal voltage from a signal processing path is coupled via an interfacing terminal to an input port of a filter, the output port of which is connected to the base input of a current source transistor to supply thereto a signal voltage which exhibits the filter transfer function. The collector output of the current source transistor is also coupled to the interfacing terminal and conducts a current exhibiting the filter transfer function to the signal path via the interfacing terminal. The base input of the current source transistor is driven with filter output sigals via a low output impedance voltage source (e.g., an emitter follower stage). The impedance presented to the base of the transistor is primarily determined by the low output impedance of the voltage source.
摘要翻译： 来自信号处理路径的信号电压经由接口端子耦合到滤波器的输入端口，滤波器的输出端口连接到电流源晶体管的基极输入端以向其提供呈现滤波器传递函数的信号电压 。 电流源晶体管的集电极输出也耦合到接口端子，并且经由接口端子将表现出滤波器传递函数的电流传导到信号路径。 电流源晶体管的基极输入通过低输出阻抗电压源（例如，射极跟随器级）由滤波器输出信号驱动。 呈现给晶体管基极的阻抗主要取决于电压源的低输出阻抗。
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公开(公告)号：US4536787A
公开(公告)日：1985-08-20
申请号：US489302
申请日：1983-04-28
CPC分类号： H04N9/64
摘要： A filter network suitable for processing a signal such as the demodulated "I" chrominance component of a composite color television signal is disclosed. The filter network comprises plural cascaded mutually interactive resonant LC sections for providing wideband filtering, amplitude peaking over a prescribed range of signal frequencies, and signal delay. Mismatched resistors terminate the filter network and constitute the primary DC impedance of the filter network, and the LC sections exhibit selected impedances at frequencies within the peaking frequency range.
摘要翻译： 公开了一种适用于处理诸如复合彩色电视信号的解调“I”色度分量之类的信号的滤波器网络。 滤波器网络包括多个级联的相互交互的谐振LC部分，用于提供宽带滤波，在规定的信号频率范围内的幅度峰化以及信号延迟。 不匹配的电阻器终止滤波器网络并构成滤波器网络的主要直流阻抗，LC部分在峰值频率范围内的频率处呈现选定的阻抗。
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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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24.发明授权Combined phase shift filter network in a color video signal processing system employing dynamic flesh tone control 失效在彩色视频信号处理系统中采用动态肤色控制的组合相移滤波器网络
公开(公告)号：US4207590A
公开(公告)日：1980-06-10
申请号：US20337
申请日：1979-03-14
CPC分类号： H04N9/643
摘要： A combined phase shift and bandpass filter circuit in a color television receiver including color signal demodulators, and an automatic flesh tone correction network which provides a reference signal for the color demodulators, is disclosed. The circuit comprises an integral bandpass filter and phase shift network coupled between the output of the flesh tone correction network and the reference signal inputs of the demodulators. The circuit filters unwanted frequency components of the reference signal from the flesh correction network, and provides phase shifting of the reference signal as appropriate for proper operation of the demodulators. The circuit exhibits good phase stability, does not require alignment from receiver to receiver, and requires a minimum of connecting terminals to the flesh correction network and color demodulators.
摘要翻译： 公开了一种包括彩色信号解调器的彩色电视接收机中的组合相移和带通滤波器电路以及为彩色解调器提供参考信号的自动肤色校正网络。 电路包括一个整合的带通滤波器和相移网络，它耦合在脏音校正网络的输出端和解调器的参考信号输入端之间。 该电路滤除来自肉体校正网络的参考信号的不需要的频率分量，并且适当地提供参考信号的相移以用于解调器的正确操作。 该电路具有良好的相位稳定性，不需要从接收器到接收器的对准，并且需要最少的连接端子到肉体校正网络和颜色解调器。
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25.发明授权Method and apparatus for providing a variety of information from an information server 失效用于从信息服务器提供各种信息的方法和装置
公开(公告)号：US6130720A
公开(公告)日：2000-10-10
申请号：US797922
申请日：1997-02-10
IPC分类号： G06F13/00 , H04N7/08 , H04N7/088 , H04N7/10 , H04N7/173 , H04N17/00 , H04N21/426 , H04N21/435 , H04N21/488 , H04N21/61 , H04N21/81 , H04N7/00 , H04N5/445 , H04N11/00
CPC分类号： H04N21/42653 , H04N21/4355 , H04N21/4884 , H04N21/6137 , H04N21/8126 , H04N7/08 , H04N7/0884 , H04N7/10 , H04N7/17318
摘要： A method and apparatus for requesting, receiving, processing, and providing local information from a single local source to a television viewer. A local 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 local source is minimally formatted without any graphical overhead. Requests for information from the local source may be on demand or at a predetermined time.
摘要翻译： 一种用于从单个本地源向电视观众请求，接收，处理和提供本地信息的方法和装置。 通过通信链路访问本地信息提供者，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。 由本地源提供的数据是最小的格式，没有任何图形开销。 来自当地来源的信息的请求可以是按需或在预定时间。
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26.发明授权System and method for updating a system time constant (STC) counter following a discontinuity in an MPEG-2 transport data stream 失效用于在MPEG-2传输数据流中的不连续性之后更新系统时间常数（STC）计数器的系统和方法
公开(公告)号：US5818539A
公开(公告)日：1998-10-06
申请号：US626184
申请日：1996-03-29
CPC分类号： H04N21/4305 , H04N19/423 , H04N19/61 , H04N21/434 , H04N7/52
摘要： A transport decoder 110, for receiving and processing a transport data stream using MPEG-2 formats, includes connections to a physical layer channel interface (channel interface) 112, a buffer memory 114, a host microprocessor 116, audio and video decoders 118/120, and clock signal circuitry 122. Upon receipt of a discontinuity indicator, the transport packet headers are parsed and transport packet payloads are stored in memory. Subsequently, upon receipt of a next program counter reference (PCR) value, a counter is loaded with the received program counter reference value. Next, the data stored in memory is searched for a time stamp and, when one is found, the time stamp is retrieved. Finally, a timer interrupt is set for a point in time approximately one frame time before the time stamp value, and, when the timer interrupt occurs, the program counter reference value is sent to the decoders, thereby providing sufficient time for the decoders to process data.
摘要翻译： 用于使用MPEG-2格式接收和处理传输数据流的传输解码器110包括到物理层信道接口（信道接口）112，缓冲存储器114，主微处理器116，音频和视频解码器118/120 和时钟信号电路122.在接收到不连续指示符时，分析传输分组报头，并将传输分组有效载荷存储在存储器中。 随后，在接收到下一个程序计数器参考（PCR）值时，计数器加载接收到的程序计数器参考值。 接下来，搜索存储在存储器中的数据的时间戳，并且当找到一个时间戳时，检索时间戳。 最后，在时间标记值之前大约一帧时间的时间点设置定时器中断，并且当定时器中断发生时，将程序计数器参考值发送到解码器，从而为解码器提供足够的时间来处理 数据。
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27.发明授权
公开(公告)号：US5619337A
公开(公告)日：1997-04-08
申请号：US380262
申请日：1995-01-27
IPC分类号： G11B20/12 , H04N7/52 , H04N7/56 , H04N9/804 , H04N21/234 , H04N21/2365 , H04N21/4147 , H04N21/43 , H04N21/432 , H04N21/433 , H04N21/4385 , H04N21/482 , H04N5/76 , G11B5/02 , G11B5/09 , G11C15/18
CPC分类号： H04N21/23406 , G11B20/1201 , H04N21/23655 , H04N21/4147 , H04N21/4305 , H04N21/4325 , H04N21/4334 , H04N21/4385 , H04N7/52 , H04N7/56 , H04N9/8042 , H04N21/482
摘要： A system records a single program from a multi-program transport stream that is encoded according to the MPEG-2 standard. The system demultiplexes transport packets from the multi-program transport stream and records the demultiplexed packets on a digital video cassette recorder (DVCR). The system includes circuitry in the encoder which emulates a buffer in the digital recorder that is used to hold the packets to convert the bursty packet data into constant rate data for recording. This emulated buffer controls the overall rate at which packets of the selected program are inserted into the multi-program transport stream by the encoder. As each packet is recorded, a time stamp value, representing when the packet was demultiplexed and a clock count value, representing a number of pulses of a high-frequency system clock signal that occurred during a predetermined number of bytes of the demultiplexed packet are recorded with the demultiplexed packet. These values are used to regenerate timing signals for a single program transport stream when the recorded packet data is replayed from the tape.
摘要翻译： 系统从根据MPEG-2标准编码的多节目传输流记录单个节目。 该系统从多节目传输流中解复用传输分组，并将解复用的分组记录在数字录像机（DVCR）上。 该系统包括编码器中的电路，其仿真数字记录器中用于保持分组以将突发分组数据转换为恒定速率数据以用于记录的缓冲器。 该仿真缓冲器控制编码器将所选程序的分组插入到多程序传输流中的总速率。 当记录每个分组时，记录表示分组分解时间的时间戳值和表示在解复用的分组的预定字节数期间发生的高频系统时钟信号的脉冲数的时钟计数值 与解复用的数据包。 当记录的数据包从磁带重放时，这些值用于重新生成单个节目传输流的定时信号。
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28.发明授权Method and apparatus for improving temporal video signal processing using motion vectors transmitted with the video signal 失效用于利用与视频信号一起发送的运动矢量改进时间视频信号处理的方法和装置
公开(公告)号：US5430487A
公开(公告)日：1995-07-04
申请号：US954508
申请日：1992-09-30
IPC分类号： H04N7/32 , G06T9/00 , H04N5/14 , H04N5/21 , H04N5/44 , H04N7/08 , H04N7/081 , H04N7/26 , H04N11/02 , H04N11/14 , H04N21/2383 , H04N21/438 , H04N11/06
CPC分类号： H04N11/14 , H04N11/02 , H04N19/80 , H04N21/2383 , H04N21/4382 , H04N5/144 , H04N5/211 , H04N7/08 , H04N7/081 , H04N5/44
摘要： A system for improving motion-sensitive processing in a television receiver generates motion vectors for video images in a studio environment, encodes the motion vectors and then combines the encoded motion vectors with the video signal for transmission. A receiver decodes the motion vectors and applies them to the motion-sensitive processing apparatus to improve its performance. The motion vector information is encoded during the active portion of the video signal in a manner that does not produce significant distortion when the video signal is processed for display. According to one embodiment of the invention, the motion vectors are encoded in a band of frequencies surrounding the color subcarrier signal as a 16 quadrature amplitude modulated (QAM) signal using Fukinuki-type modulation. According to another embodiment of the invention the motion vectors are encoded using conventional 16 QAM modulation and then used to modulate a carrier signal which is quadrature phase related to the picture carrier signal.
摘要翻译： 用于改善电视接收机中的运动敏感处理的系统在演播室环境中生成用于视频图像的运动矢量，对运动矢量进行编码，然后将编码运动矢量与视频信号组合以进行传输。 接收机解码运动矢量并将其应用于运动敏感处理装置以提高其性能。 运动矢量信息在视频信号的有效部分被编码，当视频信号被处理以进行显示时，不会产生显着的失真。 根据本发明的一个实施例，使用Fukinuki型调制，将运动矢量以围绕彩色副载波信号的频带编码为16正交调幅（QAM）信号。 根据本发明的另一个实施例，使用传统的16QAM调制对运动矢量进行编码，然后用于调制与图像载波信号有关的正交相位的载波信号。
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公开(公告)号：US4845547A
公开(公告)日：1989-07-04
申请号：US173955
申请日：1988-03-28
CPC分类号： H04N9/78
摘要： A comb filter for separating chrominance and luminance signals for each sample of a video signal adaptively selects exactly one line above or one line below for processing with the sample of interest. In the process, luminance and chrominance signals are obtained for both processing modes and coupled to a switch. Selection logic utilizes the chrominance signals established for each mode to sequentially check vertical correlation of the video signal, chrominance variations, and vertical detail to position the switch to choose the proper luminance and chrominance signal pair.
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30.发明授权Method and apparatus for reducing analog/digital converter requirements in picture-in-picture television circuits 失效用于减少画中画电视电路中模拟/数字转换器要求的方法和装置
公开(公告)号：US4827343A
公开(公告)日：1989-05-02
申请号：US104325
申请日：1987-10-02
CPC分类号： H04N5/45
摘要： In the PIP circuit of a television receiver, the resolution of the analog-to-digital converter is improved by one bit. This is done by adding a dither signal, having an amplitude equal to one-half the least significant bit at the converter output to the analog input signal throughout specific lines of the input signal. If the converter output signal is filtered by a piecewise recursive filter, in which every third line is a valid line, the other two being discarded in the subsequent PIP processor, then the dither signal is applied during the valid line and the line two lines removed from the valid line, i.e. the line following the previous valid line. If the filter is a FIR filter then the dither signal is applied during alternate lines.
摘要翻译： 在电视接收机的PIP电路中，模数转换器的分辨率提高了一位。 这通过在输入信号的特定线路上添加具有等于转换器输出端的最低有效位的二分之一的抖动信号到模拟输入信号。 如果转换器输出信号被分段递归滤波器滤波，其中每第三行是有效行，则另外两个在后续PIP处理器中被丢弃，则在有效行期间施加抖动信号，并且将第二行移除 从有效行，即跟随上一行有效行的行。 如果滤波器是FIR滤波器，则在交替行期间应用抖动信号。
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