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1.发明授权CARRIER INDEPENDENT TIMING RECOVERY SYSTEM FOR A VESTIGIAL SIDEBAND MODULATED SIGNAL 失效支持独立卒中恢复SYSTEM FOR A REST边带调制的信号
公开(公告)号：EP0752172B1
公开(公告)日：2003-05-21
申请号：EP95912905.7
申请日：1995-03-13
CPC分类号： H04L7/0278 , H03D1/24 , H04L25/0305 , H04L25/0307 , H04L25/061 , H04L25/067 , H04L27/02 , H04L27/066 , H04L2025/03382 , H04L2025/0363 , H04N5/211 , H04N5/4401 , H04N5/455
摘要： A television signal receiver for processing an HDTV signal transmitted in a vestigial sideband (VSB) format includes input complex filters shared by a timing recovery network (30) and a carrier recovery network (50). The filter network includes a pair of upper and lower band edge filters (20, 22) mirror imaged around the upper and lower band edges of the VSB signal for producing suppressed subcarrier AM output signals. The timing recovery network includes a phase detector (28, 38, 62) and responds to an AM signal derived from the two filters (via 26) for synchronizing a system clock (CLK). The carrier recovery network (50) also includes a phase detector (54, 60, 62, 64), and responds to outputs from one or both of the filters for producing an output error signal (Δ) representing a phase/frequency offset of the VSB signal. The error signal is used to reduce or eliminate the offset to produce a recovered baseband or near baseband signal. A subsequent equalizer eliminates any residual phase offsets in the recovered signal.
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公开(公告)号：EP1213930A3
公开(公告)日：2002-06-26
申请号：EP02005179.3
申请日：1995-04-03
发明人： Saeki, Tomoki , Kaneuchi, Toshio
IPC分类号： H04N9/804
CPC分类号： H04N21/4147 , G11B5/0086 , G11B15/125 , G11B15/1875 , G11B15/46 , G11B15/4671 , G11B27/005 , G11B2220/90 , H04N5/78263 , H04N5/78266 , H04N5/783 , H04N5/9262 , H04N5/9268 , H04N5/945 , H04N9/8042 , H04N9/8227
摘要： A digital video cassette recorder (350) records a high definition signal having an MPEG compatible structure, such as a proposed Grand Alliance signal. In the recorded format an advanced television frame occupies ten recorded tracks. Reproduction at speeds other than the recorded speed is termed "Trick Play". Reproduction in a "Trick Play" mode necessitates a reproducing head crossing a plurality of recorded tracks. However, since the advanced television signal is structured as groups of pictures comprising one intraframe coded frame and a plurality of predicted frames, many of the recorded tracks contain data representing predicted frames. Thus an advanced television signal reproduced in "Trick Play" may represent a jumble of unrelated data segments. Operation in "Trick Play" may be facilitated by the selection of predetermined replay speeds and the allocation of specific locations within each track from which data may be reproduced. These specific track locations are utilized during recording to place advanced television image data for reproduction during "Trick Play" operation. Upon reproducing from each track of the recorded tape one of the normal (131) and "Trick Play" (132) image data is disregarded and the other one is selected (150) and output for additional processing.
摘要翻译： 数字录像机（350）记录具有MPEG兼容结构的高清晰度信号，例如所提议的Grand Alliance信号。 在录制的格式中，高级电视帧占用十个录音轨道。 除记录速度以外的速度再现被称为“技巧播放”。 在“特技播放”模式中的再现需要重放头穿过多个记录的音轨。 然而，由于高级电视信号被构成为包括一个帧内编码帧和多个预测帧的图像组，所以许多记录道包含表示预测帧的数据。 因此，在“特技播放”中再现的高级电视信号可能代表无关数据段的混杂。 “特技播放”中的操作可以通过选择预定的重放速度和分配可从中再现数据的每个轨道内的特定位置来促进。 这些特定的轨道位置在记录期间被用来放置高级电视图像数据以在“特技播放”操作期间再现。 在从记录磁带的每个磁道中再现正常（131）和“特技播放”（132）图像数据中的一个时，忽略另一个，并选择另一个（150）并输出用于附加处理。
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公开(公告)号：EP0840936B1
公开(公告)日：2001-10-17
申请号：EP96925299.8
申请日：1996-07-12
CPC分类号： H01J29/07 , H01J29/81 , H01J2229/0722 , H01J2229/0761
摘要： The present invention relates to a color cathode-ray tube (10) having an evacutated envelope (11) with an electron gun (26) therein for generating at least one electron beam (28). The envelope (11) further includes a faceplate panel (12) having a luminescent screen (22) with phosphor lines on an interior surface thereof. A uniaxial tension focus mask (25), having a plurality of spaced-apart first metal strands (40), is located adjacent to an effective picture area of the screen. The spacing between the first metal strands defines a plurality of slots (42) substantially parallel to the phosphor lines of the screen. Each of the first metal strands across the effective picture area of the screen has a substantially continuous first insulator layer (64) on a screen-facing side thereof. A second insulator layer (66) overlies the first insulator layer. A plurality of second metal strands (60) are oriented substantially perpendicular to the first metal strands and are bonded thereto by the second insulator layer. The first insulating layer has a coefficient of thermal expansion substantially matching, or slightly lower than, that of the first strands. The second insulating layer has a coefficient of thermal expansion that is substantially identical to that of the first insulating layer.
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4.发明授权DIGITAL VIDEO TAPE RECORDER FOR DIGITAL HDTV 失效DIGITALER VIDEOREKORDERFÜRDIGITALES，HOCHAUFLÖSENDESFERNSEHEN
公开(公告)号：EP0713628B1
公开(公告)日：2001-07-11
申请号：EP94907849.7
申请日：1994-01-19
IPC分类号： H04N5/782
CPC分类号： H04N21/236 , H04N5/78266 , H04N5/783 , H04N9/8042 , H04N9/8066 , H04N9/888 , H04N21/434
摘要： A digital video tape record/playback apparatus (Fig. 10) for processing a high definition television signal includes provision for controlling the occurrence of high priority (HP) image information. Such information is selectively recorded at normal speed in tape tracks within predetermined regions (HP1-HP5) so as to appear along a tape head scanning path associated with predetermined tape playback speeds greater than normal (e.g., 20x normal). Input high priority data cells may be reordered or duplicated for recording in the predetermined tape regions in other than received order. In either case, the input datastream is massaged to produce a viewable image in a fast playback mode. In an illustrated system for receiving an MPEG coded datastream, an output datastream at greater than normal playback speed comprises either intracoded I-frame data cells only, or a whole Group of Pictures (GOP).
摘要翻译： 用于处理高分辨率电视信号的数字视频磁带记录/重放装置（图10）包括用于控制高优先级（HP）图像信息的发生的提供。 这些信息以预定区域（HP1-HP5）内的磁带轨道中的正常速度被选择性地记录，以便沿着与正常（例如，20倍正常）大的预定磁带播放速度相关联的磁带头扫描路径出现。 输入的高优先级数据单元可以被重排序或复制以便在除了接收到的顺序之外的预定磁带区域中进行记录。 在任一情况下，输入数据流被按压以在快速重放模式下产生可视图像。 在用于接收MPEG编码数据流的图示系统中，大于正常重放速度的输出数据流包括仅内插的I帧数据单元，或整个图像组（GOP）。
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公开(公告)号：EP0680225B1
公开(公告)日：2000-03-29
申请号：EP95105802.3
申请日：1995-04-19
发明人： Keller, Anton Werner
IPC分类号： H04N9/69
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公开(公告)号：EP0979575A1
公开(公告)日：2000-02-16
申请号：EP98914669.1
申请日：1998-04-10
摘要： An East-West switching transistor (Q1) is coupled between a flyback transformer primary winding (W1) and a horizontal deflection output transistor circuit (250) to control retrace energy to obtain an East-West modulation of the deflection current amplitude as required for East-West pincushion raster correction. A pair of series coupled first (C4) and second (C6, C7) capacitors forming a capacitive voltage divider are coupled to a retrace resonant circuit (100) that includes the deflection winding (LH) via a sampling switch (D8), during a first half of a retrace interval, to produce a first ramping capacitor voltage in the first capacitor from a portion of a retrace pulse voltage (V2). The first capacitor is coupled to an East-West pincushion raster correction current source (301) for producing a second ramping capacitor voltage in the first capacitor that ramps in an opposite direction. A comparator (Q4, Q5) is responsive to the capacitor voltage for controlling a conduction interval of the East-West switching transistor.
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公开(公告)号：EP0575824B1
公开(公告)日：2000-02-09
申请号：EP93109275.3
申请日：1993-06-09
发明人： Keller, Anton Werner
IPC分类号： H04N9/69
CPC分类号： H04N9/69
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公开(公告)号：EP0806082B1
公开(公告)日：1999-10-13
申请号：EP96900675.8
申请日：1996-01-23
发明人： ASCHWANDEN, Felix
CPC分类号： H03J1/0041 , H04N5/50
摘要： A tuner includes a conversion (or heterodyning) stage, including a local oscillator and a mixer, for converting an RF signal corresponding to a selected channel to an IF signal. The local oscillator has only one tunable oscillating portion for generating a signal, and a frequency converter, such as a controllable frequency divider, for converting the frequency of the signals generated by said oscillating portion, so that the receiver is able to tune through the UHF and VHF bands. The operation of the frequency converter is responsive to a digital controller, such as a microprocessor.
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公开(公告)号：EP0944999A1
公开(公告)日：1999-09-29
申请号：EP97949827.0
申请日：1997-12-13
摘要： A sample of the high voltage retrace pulse is modeled across the series connection of a coil and low voltage winding of the flyback transformer. The AC current of the high voltage winding is fed through the coil in order to obtain the same retrace voltage shape as across the high voltage winding. Thus in this manner modeled high voltage retrace pulse is rectified by a diode and a charge capacitor. The rectified voltage is loaded by the beam current by a load resistor. The loading produces excellent tracking between the high voltage and the high voltage sample.
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公开(公告)号：EP0938809A1
公开(公告)日：1999-09-01
申请号：EP97911391.0
申请日：1997-11-12
发明人： TRIPOD, Luc
摘要： A circuit for regulating an anode voltage (EHT) in an information display apparatus. A horizontal deflection circuit (10) has trace and retrace modes of operation. The horizontal deflection circuit further has a fixed retrace capacitance (CR1); and a series combination of a switched retrace capacitance (CR2) and a switch element (TR1), which combination is coupled in parallel with the fixed retrace capacitance. The switch element is in a closed position as the horizontal deflection circuit enters the retrace mode of operation. A voltage divider network (R1, R2) samples the anode voltage. A control circuit (20) is responsive to the sample voltage (V1) for controlling the switch element, such that the control circuit effects regulation of the anode voltage by selecting a time during the retrace period at which to place the switch element in an open position. The control circuit may also provide a raster width compensation voltage for an east-west pincushion correction circuit.
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