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    • 5. 发明申请
    • SELECTIVE COMPRESSION NETWORK IN AN MPEG COMPATIBLE DECODER
    • MPEG兼容解码器中的选择性压缩网络
    • WO1998027743A1
    • 1998-06-25
    • PCT/US1997023075
    • 1997-12-15
    • THOMSON CONSUMER ELECTRONICS, INC.SCHULTZ, Mark, AlanKRANAWETTER, Greg, Alan
    • THOMSON CONSUMER ELECTRONICS, INC.
    • H04N07/50
    • H03M7/40G06T9/007H04N5/4401H04N5/46H04N11/044H04N19/13H04N19/186H04N19/40H04N19/42H04N19/423H04N19/428H04N19/436H04N19/439H04N19/59H04N19/60H04N19/61H04N19/895H04N19/90H04N19/91H04N21/4305
    • An MPEG decoder (14, 18, 22) in a high definition television receiver decodes and decompresses MPEG coded data to produce decompressed image pixel blocks, and includes a motion compensation network (90, ...) coupled to a frame memory (60) to produce finally decoded pixel data for display. The decompressed MPEG data is recompressed by plural parallel recompressors (40, 42) prior to storage in frame memory. Each recompressor receives a datastream of interleaved pixel data (24, 27; Fig. 5), and predicts and compresses interleaved pixel values (a, c) during each clock cycle, respectively (Fig. 20, 27). One of the recompressors (42) is de-energized in a reduced data processing mode when pixel data is subsampled (36, 38) prior to recompression. Subsampled data is re-ordered (43) prior to recompression. Multiple parallel decompressors (80, 82, 84) coupled to the frame memory provide pixel data to the motion processing network. A control unit (356, 360, 364, Fig. 23) insures an uninterrupted interleaved data flow to the decompressors by repeating last valid data when source data is interrupted.
    • 高分辨率电视接收机中的MPEG解码器(14,18,22)对MPEG编码数据进行解码和解压缩以产生解压缩的图像像素块,并且包括耦合到帧存储器(60)的运动补偿网络(90,...) 以产生用于显示的最终解码的像素数据。 解压缩的MPEG数据在存储在帧存储器中之前由多个并行的再压缩器(40,42)重新压缩。 每个再压缩器接收交错像素数据(24,27;图5)的数据流,并分别在每个时钟周期期间预测和压缩交错像素值(a,c)(图20,27)。 当在再压缩之前对像素数据进行二次采样(36,38)时,其中一个再压缩器(42)在减小的数据处理模式中被断电。 在重新压缩前重新排序(43)采样数据。 耦合到帧存储器的多个并行解压缩器(80,82,84)向运动处理网络提供像素数据。 当源数据被中断时,控制单元(356,360,364,图23)通过重复最后的有效数据来确保不间断的交错数据流到解压缩器。
    • 7. 发明申请
    • VIDEO SIGNAL PROCESSING SYSTEM PROVIDING INDEPENDENT IMAGE MODIFICATION IN A MULTI-IMAGE DISPLAY
    • 在多图像显示器中提供独立图像修改的视频信号处理系统
    • WO1998027724A1
    • 1998-06-25
    • PCT/US1997022722
    • 1997-12-10
    • THOMSON CONSUMER ELECTRONICS, INC.
    • THOMSON CONSUMER ELECTRONICS, INC.RUMREICH, Mark, Francis
    • H04N05/45
    • H04N5/45H04N21/4316H04N21/4318H04N21/4542H04N21/4755H04N21/84
    • Video signal processing apparatus provides for blanking main and auxiliary images in a multi-image display, e.g., a PIP or POP display, independently. The blanking may be part of a V-chip feature in which blanking occurs in response to auxiliary information, such as XDS data, that is included in a video signal to indicate the content of television programming. Main image blanking occurs only during active video intervals to prevent corrupting sync information. In a system that produces the main image from various types of video signals, e.g., composite video and s-video, that require separate signal processing paths, main image blanking capability is provided in one signal path only, such as the composite video path. The blanking capability is activated and the associated signal path is selected to provide main picture blanking regardless of which type of signal is providing the main picture.
    • 视频信号处理装置独立地提供在多图像显示器(例如PIP或POP显示器)中消隐主图像和辅助图像。 消隐可以是V芯片特征的一部分,其中响应于包括在视频信号中的辅助信息(例如XDS数据)发生消隐以指示电视节目的内容。 主图像消隐仅在活动视频间隔期间发生,以防止损坏同步信息。 在从需要单独的信号处理路径的各种类型的视频信号(例如,复合视频和S-视频)产生主图像的系统中,仅在一个信号路径中提供主图像消隐能力,例如复合视频路径。 消隐功能被激活,并且选择相关联的信号路径以提供主画面消隐,而不管哪种类型的信号提供主画面。
    • 8. 发明申请
    • A DECODING APPARATUS/METHOD AND DATA FORMAT FOR PROCESSING AND STORING ENCRYPTED VIDEO DATA
    • 解码设备/用于处理和存储加密视频数据的方法和数据格式
    • WO1998024237A1
    • 1998-06-04
    • PCT/US1997019375
    • 1997-10-28
    • THOMSON CONSUMER ELECTRONICS, INC.
    • THOMSON CONSUMER ELECTRONICS, INC.BLATTER, HaroldHORLANDER, Thomas, EdwardBRIDGEWATER, Kevin, ElliottDEISS, Michael, Scott
    • H04N07/167
    • H04N21/4181H04N5/4401H04N7/1675H04N21/4147H04N21/42646H04N21/4345H04N21/4405H04N21/4623
    • A decoder (25) conditional access system (115, 130, 50) incorporates different encryption systems for providing access to programs derived from different sources. A conditional access processor (115, 130, 50) for processing encrypted program data and an associated encryption code includes a first algorithm means (130, 115) for decrypting the encryption code to provide an encryption key. The conditional access processor also includes a second algorithm means (115, 130) for encrypting the encryption key and the second encryption algorithm is different to the first encryption algorithm. A datastream representing the program is generated (33, 115, 110, 60, 65, 50) from encrypted program data and an associated encryption code. The encryption code is decrypted (115, 130) to provide an encryption key using a first algorithm. The encryption key is encrypted (115, 130) using a second algorithm different to the first encryption algorithm and the program datastream is formed from the encrypted program data and the encrypted encryption key. The program datastream is decrypted by selecting between a first and a second decryption algorithm and by decrypting (115, 130) the encryption code to provide an encryption key. The encryption key is used to decrypt (50, 115) the encrypted program. A storage medium (105) data format for recording encrypted program data is also disclosed.
    • 解码器(25)条件访问系统(115,130,50)包括用于提供对从不同来源导出的节目的访问的不同加密系统。 用于处理加密程序数据和相关联的加密代码的条件访问处理器(115,130,50)包括用于解密加密代码以提供加密密钥的第一算法装置(130,115)。 条件访问处理器还包括用于加密加密密钥的第二算法装置(115,130),第二加密算法与第一加密算法不同。 从加密程序数据和相关联的加密代码生成表示程序的数据流(33,115,110,60,65,50)。 加密代码被解密(115,130)以使用第一算法提供加密密钥。 使用与第一加密算法不同的第二算法对加密密钥进行加密(115,130),并且从加密的程序数据和加密的加密密钥形成程序数据流。 通过在第一和第二解密算法之间进行选择并解密(115,130)加密代码以提供加密密钥来解密程序数据流。 加密密钥用于解密(50,115)加密程序。 还公开了用于记录加密程序数据的存储介质(105)数据格式。
    • 9. 发明申请
    • ELECTRON BEAM FOCUS VOLTAGE CIRCUIT
    • 电子束聚焦电压电路
    • WO1998021883A1
    • 1998-05-22
    • PCT/US1997020249
    • 1997-11-10
    • THOMSON CONSUMER ELECTRONICS, INC.
    • THOMSON CONSUMER ELECTRONICS, INC.FERNSLER, Ronald, Eugene
    • H04N03/26
    • H04N3/27H04N3/26
    • There is provided a circuit and method for generating a focus voltage having a predetermined waveform and magnitude for application to an electron beam focus means of a cathode ray tube having a display surface. A horizontal deflection current having a predetermined waveform and a frequency which is selectable over a predetermined range of frequencies is used to generate substantially horizontal scan lines on the display surface of the cathode ray tube by causing at least one electron beam to sweep across the display surface. The circuit has an input for receiving a signal having a current waveform representative of the waveform and frequency of the horizontal deflection current. In response to the received signal, the circuit produces a focus voltage output, the waveform and magnitude of which remain substantially constant over the range of selected frequencies of the horizontal deflection current.
    • 提供了一种产生具有预定波形和幅度的聚焦电压的电路和方法,用于应用于具有显示表面的阴极射线管的电子束聚焦装置。 使用具有预定波形的水平偏转电流和在预定频率范围内可选择的频率,以通过使至少一个电子束扫过显示表面而在阴极射线管的显示表面上产生基本水平的扫描线 。 电路具有用于接收具有代表水平偏转电流的波形和频率的电流波形的信号的输入。 响应于接收到的信号,电路产生聚焦电压输出,其波形和幅度在水平偏转电流的选定频率的范围内保持基本恒定。
    • 10. 发明申请
    • FAULT CONTROL CIRCUIT FOR SWITCHED POWER SUPPLY
    • 用于开关电源的故障控制电路
    • WO1998021811A1
    • 1998-05-22
    • PCT/US1997021009
    • 1997-11-12
    • THOMSON CONSUMER ELECTRONICS, INC.
    • THOMSON CONSUMER ELECTRONICS, INC.WILLIAMS, Kevin, MichaelGEORGE, John, Barrett
    • H02M01/00
    • H02M1/32H02M3/33523
    • A voltage source (RAW B ), a transformer (T1) and a switching controller (U1) are coupled for switched mode generation of a regulated output supply voltage. A switching circuit (R5, R6, R7, Q3, Q4, Z3, U3) responsive to an on/off signal (+23 v-RUN) turns the power supply on and off by establishing a conductive condition in a conductive path. A fault detector (42) establishes a non conductive condition in a part of the conduction path responsive to an overload condition. A delay circuit (40) establishes a conductive condition in an auxiliary conduction path for a period of time after the power supply is turned on. The auxiliary conduction path becomes non-conductive when the fault detector establishes a conductive condition in the part of the conduction path. The part of the conduction path remains conductive absent an overload condition. A latch arrangement including the delay circuit maintains the non-conductive condition in the auxiliary conduction path until the power supply is turned off.
    • 耦合电压源(RAW B +),变压器(T1)和开关控制器(U1),用于产生调节输出电源电压的开关模式。 响应于开/关信号(+23V-RUN)的开关电路(R5,R6,R7,Q3,Q4,Z3,U3)通过在导电路径中建立导电条件来打开和关闭电源。 故障检测器(42)响应于过载条件在导通路径的一部分中建立非导通状态。 延迟电路(40)在电源接通之后的一段时间内在辅助导电路径中建立导电状态。 当故障检测器在导电路径的一部分中建立导电状态时,辅助导电路径变得不导通。 传导路径的一部分在没有过载条件的情况下保持导通。 包括延迟电路的锁存装置保持辅助传导路径中的非导通状态,直到电源关闭。