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81. 发明授权

US5289278A Duo-binary and/or binary data slicer 失效
标题翻译：二进制和/或二进制数据切片器
公开(公告)号：US5289278A
公开(公告)日：1994-02-22
申请号：US838049
申请日：1992-02-19
申请人： Philip H. Bird
发明人： Philip H. Bird
IPC分类号： H03K5/08 , H04N7/083 , H04N7/08
CPC分类号： H03K5/084 , H03K5/082 , H04N7/083
摘要： A duo-binary and/or binary data slicer has a data input (10) coupled via a capacitor (C1) to a d.c. restoring circuit (A2 to Q6 and Q9 to Q13) d.c. reference level is superimposed on the data signal. A sample and hold circuit (C2, Q15 to Q22) is arranged to sample the data signal and provide a voltage related to the upper and lower peak value. A divider (R16-R19) is coupled between the d.c. reference level and the voltage related to the upper and lower peak value and provides intermediate output voltages (DU, DL, B) relating to duo-binary and/or binary level for determining the slicing levels.
摘要翻译：二进制和/或二进制数据限幅器具有经由电容器（C1）耦合到直流电的数据输入端（10）。恢复电路（A2至Q6和Q9至Q13）d.c. 参考电平叠加在数据信号上。采样和保持电路（C2，Q15至Q22）被布置为对数据信号进行采样并提供与上下峰值相关的电压。分频器（R16-R19）耦合在直流电源参考电平和与上下峰值相关的电压，并提供与二进制和/或二进制电平相关的中间输出电压（DU，DL，B）以确定限幅电平。

82. 发明授权

US5068729A Compatible extended-definition television 失效
公开(公告)号：US5068729A
公开(公告)日：1991-11-26
申请号：US413881
申请日：1989-10-02
申请人： Ron D. Katznelson , Edward A. Krause
发明人： Ron D. Katznelson , Edward A. Krause
IPC分类号： H04N7/015 , G09G1/16 , H04N7/083 , H04N7/087 , H04N7/088 , H04N11/24
CPC分类号： H04N11/008
摘要： A wide-aspect-ratio television signal is encoded for transmission within a standard-television-signal-compatible format is encoded by dividing the television signal into center-panel segments from which the horizontally central portion of a television picture produced from said wide-aspect-ratio television signal is displayed in accordance with a standard-television-signal aspect ratio, and side panel segments from which the left and right side portions of the television picture produced from said wide-aspect-ratio television signal are displayed in accordance with the wide aspect ratio; arranging the center panel segments for transmission in the standard-television-signal-compatible format; reducing the spatial frequency extent of at least a portion of said side-panel segments by vertically expanding said portion; and inserting said vertically expanded portion of the side-panel segments for transmission during transmission of said center-panel segments in a manner that enables said inserted portion of the side panel segments to be separated from the center panel segments. The center-panel segments are transmitted in a temporal-vertical-frequency domain that includes Fukinuki holes; and the vertically expanded portion is inserted within said Fukinuki holes. The signal is further encoded by producing an augmentation signal from the side panel segments, which includes side-panel chrominance information and low-horizontal-frequency and low-vertical-frequency side-panel luminance information; modulating the side-panel chrominance information of said augmentation signal within a predetermined frequency band that does not overlap said low-horizontal-frequency and low-vertical-frequency side-panel luminance information; and inserting said modulated augmentation signal within the vertical blanking interval for transmission. Different encoding and separation modes are used when the source is 24 frame per second film exploiting the 3:2 pull down scheme.

83. 发明授权

US5053859A High definition B-MAC television signal transmission system 失效
标题翻译：高清晰度B-MAC电视信号传输系统
公开(公告)号：US5053859A
公开(公告)日：1991-10-01
申请号：US255317
申请日：1988-10-11
申请人： Keith Lucas
发明人： Keith Lucas
IPC分类号： H04N11/10 , H04N7/015 , H04N7/083 , H04N7/26 , H04N11/24
CPC分类号： H04N7/083 , H04N11/006 , H04N7/015
摘要： A method for encoding a high definition television signal comprising a first frequency spectrum portion for standard resolution and a second high frequency spectrum portion for high resolution consistent with the B-MAC composite signal format comprises the steps or orthogonally sampling the high definition signal, diagonally filtering diagonal resolution information, and decimating alternate samples of alternate lines for folding in high frequency horizontal resolution information by means of a skew-symmetric low-pass filter. A method at a standard television resolution receiver for decoding the high-definition television signal uses a simple low pass filter to recover the baseband television spectrum at standard television resolution. A method at a high-definition television receiver comprises the steps of unfolding the high frequency horizontal resolution information and thereafter line doubling the unfolded high frequency resolution informtion to improve vertical resolution of the high-definition television signal. Thus, the encoding method is compatible for reception at either a standard resolution or high-definition television receiver.
摘要翻译：一种用于编码包括用于标准分辨率的第一频谱部分和与B-MAC复合信号格式一致的高分辨率的第二高频频谱部分的高清晰度电视信号的方法包括以下步骤或正交采样高分辨率信号，对角线滤波对角分辨率信息，并且通过偏斜对称低通滤波器抽取用于在高频水平分辨率信息中折叠的交替行的交替样本。用于解码高分辨率电视信号的标准电视分辨率接收机的方法使用简单的低通滤波器来以标准电视分辨率恢复基带电视频谱。高清晰度电视接收机的方法包括以下步骤：展开高频水平分辨率信息，然后将展开的高频分辨率信息加倍，以改善高分辨率电视信号的垂直分辨率。因此，编码方法兼容于标准分辨率或高分辨率电视接收机的接收。

84. 发明授权

US4975928A Device for deriving a clock signal using a gated phase-locked loop having means for suspending the gating at device turn-on 失效
标题翻译：用于使用门控锁相环导出时钟信号的装置，具有用于在装置开启时暂停门控的装置
公开(公告)号：US4975928A
公开(公告)日：1990-12-04
申请号：US362531
申请日：1989-06-07
申请人： Johannes B. Horsten
发明人： Johannes B. Horsten
IPC分类号： H04N5/06 , H03L7/08 , H04N5/91 , H04N5/93 , H04N5/932 , H04N7/083
CPC分类号： H04N7/083 , H04N5/932
摘要： A device for deriving a clock signal from an electric signal made up of consecutive signal blocks (B.sub.i), each signal block having a first block section (EBD.sub.i) containing a first signal and a second block section (TBD.sub.i) containing a second signal. The input terminal (1) is coupled to two parallel circuits via a switch (3), one of the parallel circuits including a high-pass filter (8). The circuits have their outputs coupled to the inputs of a phase-locked loop (5) and a code-word detector (6). The output (13) of the code-word detector (6) is coupled to a control signal generator (15). The control signal generator (15) generates control signals which are applied to a control signal input (9) of the switch. During normal operation, the switch (3) defines a time window for the electric signal, so that only the first block sections are applied to the code-word detector (6) and the phase-locked loop (5) to derive the clock signal from the signal information in these first block sections. When the device is switched on, the time window function is disabled. The complete signal is applied to the inputs of the phase-locked loop (5) and the code-word detector (6) via the high-pass filter (8). When the code-word detector (6) has detected a code-word, the timing of the device is in step and changing over to normal gated operation is possible.

85. 发明授权

US4866522A Television transmission system with multiplexed components 失效
标题翻译：具有复用组件的电视传输系统
公开(公告)号：US4866522A
公开(公告)日：1989-09-12
申请号：US157820
申请日：1988-02-19
申请人： John C. Beckley
发明人： John C. Beckley
IPC分类号： H04N7/015 , H04N7/083
CPC分类号： H04N7/083
摘要： A component television signal is transmitted as a sequence of television frames with each frame having a plurality of television lines substantially all of which have first and second time multiplexed portions. The first portion (DB) forms the data burst and conveys sound/data information in digital form at a given bit rate while the second portion of each line outside the vertical blanking intervals (VBI) conveys vision information (U/V, Y). The second portion of at least some of the lines in the verical blanking intervals (VBI) convey additional information in digital form at a higher bit rate than the given bit rate and which may be twice the given bit rate. This additional information can be the digital channel information for a digitally assisted television signal.
摘要翻译：分量电视信号作为电视帧序列发送，每个帧具有多个电视线，其基本上都具有第一和第二时间复用部分。第一部分（DB）形成数据脉冲串，并以给定比特率以数字形式传送声音/数据信息，而垂直消隐间隔（VBI）外的每行的第二部分传送视觉信息（U / V，Y）。在空白消隐间隔（VBI）中的至少一些行的第二部分以比给定比特率更高的比特速率以数字形式传送附加信息，并且其可以是给定比特率的两倍。该附加信息可以是用于数字辅助电视信号的数字频道信息。

86. 发明授权

US4794447A Method and apparatus for transmitting and receiving a high definition NTSC compatible television signal over a single DBS channel in time division multiplex form 失效
标题翻译：用于以时分复用形式在单个DBS信道上发送和接收高分辨率NTSC兼容电视信号的方法和装置
公开(公告)号：US4794447A
公开(公告)日：1988-12-27
申请号：US931756
申请日：1986-11-17
申请人： Mikhail Tsinberg
发明人： Mikhail Tsinberg
IPC分类号： H04N7/01 , H04N7/015 , H04N7/083 , H04N11/24 , H04N11/18 , H04N7/12
CPC分类号： H04N7/0155 , H04N11/004 , H04N11/006 , H04N7/0112 , H04N7/083
摘要： A high definition television signal having 525 lines per frame, a sequential scan, and 59.94 frames per second is encoded into a time multiplex signal for transmission. The encoder drops alternate line, but creates line difference signals which allow reconstruction of the dropped lines at the receiver. The line difference signals are time compressed, while the luminance signals of the alternate, transmitted lines are time expanded. The encoder can accept programs from any one of a plurality of program originators, as long as the frame and line rates are multiples of one another. The time multiplex signal carries luminance and chrominance components in each line, but update signals such as high frequency luminance, high frequency chrominance and the line difference signals in a predetermined pattern in sequential frames. At the receiver, the time multiplex signal is decoded into the original high definition signal and is further encoded directly into two channels, the first being compatible with NTSC, the second being an augmentation channel. The two channels can latter be recombined, for example at a cable receiver, to create the high definition signal, while the first channel signal can be directly received on an NTSC receiver.
摘要翻译：具有每帧525行，顺序扫描和59.94帧每秒的高分辨率电视信号被编码为时间复用信号以进行传输。编码器掉线，但产生线差信号，允许在接收机重建掉线。线差信号被时间压缩，而交替发送线的亮度信号被时间扩展。编码器可以接受来自多个节目发起者中的任何一个的节目，只要帧速率和线速率是彼此的倍数即可。时间复用信号在每行中承载亮度和色度分量，但是在连续帧中以预定模式更新诸如高频亮度，高频色度和线差信号的信号。在接收机处，时间复用信号被解码为原始高清晰度信号，并进一步直接编码成两个信道，第一个与NTSC兼容，第二个是增强信道。后两者可以例如在电缆接收机上重新组合以产生高分辨率信号，而第一信道信号可以在NTSC接收机上直接接收。

87. 发明授权

US4780708A Display control system 失效
标题翻译：显示控制系统
公开(公告)号：US4780708A
公开(公告)日：1988-10-25
申请号：US805901
申请日：1985-12-06
申请人： Shigenori Tokumitsu
发明人： Shigenori Tokumitsu
IPC分类号： H04N7/083 , G06F3/153 , G09G5/00 , G09G5/02 , G09G5/36 , G09G5/39 , G09G5/391 , H04N7/084 , H04N7/085 , G09G1/14
CPC分类号： G09G5/391 , G09G5/024 , G09G5/026
摘要： A predetermined display period is divided into a plurality of shorter display periods. Image data is stored in an image memory and read in accordance with a period for reading the data from the memory. An accessing period is also provided, and access to the memory is made when the addressing mode is being set in a mode register during the accessing period, whereby the data is displayed by raster scanning.
摘要翻译：预定的显示周期被分成多个较短的显示周期。图像数据存储在图像存储器中，并根据用于从存储器读取数据的周期进行读取。还提供访问周期，并且当在访问周期期间在模式寄存器中设置寻址模式时进行存储器的访问，从而通过光栅扫描来显示数据。

88. 发明授权

US4750036A Interactive television and data transmission system 失效
标题翻译：互动电视和数据传输系统
公开(公告)号：US4750036A
公开(公告)日：1988-06-07
申请号：US863101
申请日：1986-05-14
申请人： Louis Martinez
发明人： Louis Martinez
IPC分类号： H04N7/025 , G01S13/87 , H04B7/26 , H04L5/02 , H04L27/20 , H04N7/03 , H04N7/035 , H04N7/08 , H04N7/081 , H04N7/083 , H04N7/084 , H04N7/085 , H04N7/173 , H04N7/093 , H04N7/00
CPC分类号： H04N7/08 , G01S13/878 , H04B7/2621 , H04L27/2071 , H04L5/02 , H04N7/085 , H04N7/173 , H04N7/17309 , H04N2007/17372
摘要： A spread spectrum system provides bidirectional digital communication on a vacant television (TV) channel for simultaneous use by more than 75,000 subscribers using time and frequency division multiplex signals locked to horizontal and vertical sync pulses of an adjacent channel Host TV station. The system, whose operation is analogous to a radar system, comprises: (1) the Host TV station to send down-link sync and data pulses to subscribers during the horizontal blanking interval (HBI), (2) subscriber "transponders" which detect those signals and transmits up-link "echo" data pulses only during the HBI to eliminate interference to TV viewers, and (3) a central receiver which also uses the host TV sync pulses to trigger range gates to detect the up-link data pulses. In a preferred embodiment the central receiver employs directional antennas to determine direction to transponders and to define angular sectors partitioning the service area into pie-link "cells" which permit frequency re-use in non-contiguous sectors (like cellular radio). The system thus operates like a radar to measure elapsed time between receipt of TV sync pulses and receipt of transponder response pulses and measures bearing to transponders to thereby determine the location of fixed or mobile subscribers as well as provide data links to them. Transponders may share user's existing TV antenna or may operate on cable TV and could be packaged and "RF modems" for personal computers, as transceivers for mobile or portable use, or they may be integrated with a TV receiver to provide "interactive television".
摘要翻译：扩展频谱系统在空闲电视（TV）频道上提供双向数字通信，用于由超过75,000个用户同时使用使用锁定在相邻信道主机电视台的水平和垂直同步脉冲的时间和频分复用信号。该系统的操作类似于雷达系统，包括：（1）主机电视台在水平消隐间隔（HBI）期间向订户发送下行链路同步和数据脉冲，（2）检测到的用户“应答器” 那些信号并且仅在HBI期间发送上行链路“回波”数据脉冲，以消除对电视观众的干扰，以及（3）中央接收机，其也使用主机TV同步脉冲来触发范围门以检测上行链路数据脉冲。在优选实施例中，中央接收机使用定向天线来确定对应答器的方向，并且将定义服务区域的角度扇区定义为允许在非连续扇区（如蜂窝无线电）中频率重新使用的像素链路“小区”。因此，该系统像雷达一样操作以测量接收到电视同步脉冲之间的经过时间以及接收转发器响应脉冲之间的经过时间，以及对转发器的承受力，从而确定固定或移动用户的位置以及提供与它们的数据链接。应答器可以共享用户现有的电视天线，或者可以在有线电视上操作，并且可以将个人计算机的“RF调制解调器”作为移动或便携式使用的收发器打包，或者可以与电视接收机集成以提供“交互式电视”。

89. 发明授权

US4706109A Television transmission system 失效
公开(公告)号：US4706109A
公开(公告)日：1987-11-10
申请号：US739333
申请日：1985-05-30
申请人： Bruce Murray
发明人： Bruce Murray
IPC分类号： H04N7/045 , H04N7/08 , H04N7/081 , H04N7/083 , H04N7/10 , H04N7/20 , H04N7/26 , H04N7/54
CPC分类号： H04N7/045 , H04N7/083 , H04N7/10 , H04N7/54
摘要： In television transmitter equipment for a television transmission system having a time multiplexed signal in component form, the vision components are derived from a vision source (1), encoded in a MAC encoder (2) and the encoded vision signals are modulated in a frequency modulator (3) which also receives oscillations from an oscillator (4). The modulated output of the frequency modulator (3) is applied through a multiplexer (5) to a transmitter (6) whose modulated carrier is applied to a dish aerial (7) for transmission to a satellite. The equipment contains a number of sources (8 to 15) of sound/data information which are separated into two groups, an `A` group of sources (8 to 11) and a `B` group of sources (12 to 15). Digital signals from the `A` group sources are applied to an `A` packet multiplexer (17) where the signals are assembled packet-by-packet into a given time area at a bit rate of 10.125 MHz. Corresponding signals from the `B` group sources are applied to a `B` packet multiplexer (18) where these signals are similarly assembled into a corresponding time area at the same bit rate. The outputs of the `A` and `B` packet multiplexers (17, 18) are applied to respective inputs of a further multiplexer (19) to produce within the time area bits derived from the two packet multiplexers. This data, the appropriate line sync words from a sync word generator (21) and data from a source (23) for lines 624 and 625 of each frame are assembled in a data assembler (20) to produce the data burst containing the sound/data components for the time multiplexed signal. This is modulated in a 2-4 PSK modulator (22) and the modulated output applied to a further input of the multiplexer (5). The data burst of the signal produced may be readily separated into its two groups to produce a data burst at the lower bit rate from one group for the transmission of a time multiplexed television signal over a medium of narrow bandwidth such as a cable channel.

90. 发明授权

US4665427A Method and apparatus for converting C-MAC television signals for transmission over a limited bandwidth medium 失效
标题翻译：用于转换C-MAC电视信号以在有限带宽介质上传输的方法和装置
公开(公告)号：US4665427A
公开(公告)日：1987-05-12
申请号：US585705
申请日：1984-03-02
申请人： John C. Beckley , Peter R. Brennand , Bruce Murray
发明人： John C. Beckley , Peter R. Brennand , Bruce Murray
IPC分类号： H04N7/06 , H04N7/083 , H04N11/08 , H04N11/00
CPC分类号： H04N11/08 , H04N7/06 , H04N7/083
摘要： A wide-band frequency modulated DBS signal of the type having time sequential compressed chrominance and luminance (video) components is received by an aerial (1), frequency converted in a down converter (2) and applied to the input (4) of a conversion unit. The conversion unit has a tuner (5), i.f. stage (9,10) and a frequency demodulator (11) to produce baseband video which is applied after de-emphasis at (12) to a modulator (27) where the video is amplitude modulate onto a vision carrier from an oscillator (28). The modulated carrier is applied through a vestigial sideband filter (29) and an adder (30) to an output (31). Sound/data bursts present in the DBS signal are recovered in a stage (13) and processed in a processor (14) where the sound/data bursts are expanded to occupy approximately a line period at a bit rate which is an integral sub-multiple of the bit rate for the sound/data bursts in the received DBS signal. The expanded sound/data and clock frequency are digitally modulated in a modulator (32 ) onto a sound carrier from an oscillator (33), the modulated sound carrier being applied through a bandpass filter (34) and the adder (30) to the output (31). The output (31) is connected to a cable distribution system for which the narrow band signals produced by the conversion unit are suited as such systems cannot cope with high bit-rates. The processing of the sound/data bursts such that their bit rate is substantially reduced also simplifies the handling and demodulation processes for these bursts.
摘要翻译：具有时间顺序压缩色度和亮度（视频）分量的类型的宽带调频DBS信号由天线（1）接收，在下变频器（2）中进行频率转换，并被施加到输入（4）转换单位。转换单元具有调谐器（5），即（9,10）和频率解调器（11），以产生在（12）的去加重之后施加到调制器（27）的基带视频，其中视频被振幅调制到来自振荡器（28）的视频载波上，。调制载波通过残留边带滤波器（29）和加法器（30）施加到输出端（31）。存在于DBS信号中的声音/数据突发在阶段（13）中被恢复，并在处理器（14）中进行处理，其中声音/数据脉冲串被扩展以占据大约一个行周期，比特率是整数子倍数的接收到的DBS信号中的声音/数据脉冲串的比特率。扩展的声音/数据和时钟频率在调制器（32）中从振荡器（33）被数字调制到声音载波上，经调制的声音载波通过带通滤波器（34）和加法器（30）施加到输出端（31）。输出（31）连接到由转换单元产生的窄带信号适合的电缆分配系统，因为这样的系统不能应付高比特率。声/数据脉冲串的处理使得它们的比特率显着降低也简化了这些脉冲串的处理和解调处理。

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