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公开(公告)号：US4402089A
公开(公告)日：1983-08-30
申请号：US302853
申请日：1981-09-16
CPC分类号： H03J3/28 , H03J5/0263
摘要： A television (TV) receiver tuning system for selecting one of a plurality of receivable TV channels comprises a frequency selective radio frequency device including trimming elements for receiving TV signals, a local oscillator controlled by a first control signal and a mixer in which the TV signals and the local oscillator signal are heterodyned to develop an intermediate frequency signal. A first control device develops the first control signal in response to the selection of a TV channel to control the local oscillator frequency so that the mixer shifts the selected TV channel signal to the IF frequency. A second control device including a PROM trims the frequency selectivity of the RF device using its trimming elements unaffected by selection of the TV channel whereby mechanical alignment of the TV tuning system can be avoided. In other aspects of the invention, the second control device develops signals for adjusting tunable circuits in the IF amplifier, for adjusting the tracking of the local oscillator frequency in relation to its control signal, and, in a double-conversion tuner, for adjusting the frequency of a second local oscillator.
摘要翻译： 用于选择多个可接收TV频道中的一个的电视（TV）接收机调谐系统包括：频率选择性射频设备，包括用于接收TV信号的修整元件，由第一控制信号控制的本地振荡器和其中TV信号 并且本地振荡器信号被外差以产生中频信号。 第一控制装置响应于选择TV信道来开发第一控制信号以控制本地振荡器频率，使得混频器将所选择的TV信道信号移位到IF频率。 包括PROM的第二控制装置使用其修整元件修改RF装置的频率选择性，而不受TV选择的影响，从而可以避免TV调谐系统的机械对准。 在本发明的其他方面，第二控制装置产生用于调整IF放大器中的可调谐电路的信号，用于相对于其控制信号调整本地振荡器频率的跟踪，并且在双转换调谐器中，用于调整 第二本地振荡器的频率。
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公开(公告)号：US4390902A
公开(公告)日：1983-06-28
申请号：US315617
申请日：1981-10-28
IPC分类号： H04N5/50
CPC分类号： H04N5/50
摘要： A television (TV) receiver which receives TV signals in a plurality of TV frequency bands includes apparatus for developing an accentuated and uncontaminated on-screen tuning indication. Specifically, a blanking device is responsive to a tuning signal for eliminating the display of a portion of the TV picture for the duration of a pulse signal. The pulse signal is delayed in time relative to a deflection signal by a time related to the tuning signal so that a blanked bar is generated in the TV picture. A tuning indicator device causes a predetermined display unaffected by the TV picture during the blanked portion of the TV picture.
摘要翻译： 在多个TV频带中接收电视信号的电视（TV）接收机包括用于开发突出和未受污染的屏幕上调谐指示的装置。 具体地，消隐装置响应于调谐信号，以消除在脉冲信号的持续时间内的TV图像的一部分的显示。 脉冲信号相对于偏转信号在时间上延迟与调谐信号相关的时间，使得在TV图像中产生消隐的条。 调谐指示器装置在电视画面的空白部分期间引起不受TV图像影响的预定显示。
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公开(公告)号：US4181916A
公开(公告)日：1980-01-01
申请号：US890883
申请日：1978-03-27
申请人： John G. N. Henderson
发明人： John G. N. Henderson
摘要： The channel number display apparatus for a television receiver includes a liquid crystal device. A lamp is positioned with respect to the liquid crystal display device to selectively illuminate it under low ambient light conditions. The lamp is automatically turned on in response to a signal generated by an ambient light sensing circuit which is also utilized to control the contrast and color level characteristics of the receiver in response to ambient light conditions.
摘要翻译： 电视接收机的频道号显示装置包括液晶装置。 相对于液晶显示装置定位灯，以在低环境光条件下选择性地照亮它。 响应于由环境光检测电路产生的信号，灯被自动地接通，其也被用于响应于环境光条件来控制接收器的对比度和色彩水平特性。
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公开(公告)号：US20100045528A1
公开(公告)日：2010-02-25
申请号：US12612483
申请日：2009-11-04
申请人： John G. N. Henderson , Carl Scarpa
发明人： John G. N. Henderson , Carl Scarpa
IPC分类号： H01Q3/00
CPC分类号： H01Q1/007 , H01Q1/24 , H01Q3/2611 , H01Q7/005
摘要： Antennas with steerable antenna patterns and techniques for using such antennas are described. In accordance with the invention, antenna patterns with one or more NULLs are used. Through the use of digital control signals the antenna pattern is steered so that a source of signal interference, e.g., a multipath signal, will be located in a NULL. In this manner the received signal's S/N ratio can be maximized thereby facilitating demodulation. The techniques of the invention can be applied to television, computer devices, mobile devices and a wide range of other systems. Digital commands to control an antenna may include multiple information fields, e.g., a direction field, a channel field, a gain field and a polarity field. Antennas incapable of supporting the specified fields disregard information in fields which are not supported. Information in each supported field is decoded and used to adjust the corresponding antenna characteristic.
摘要翻译： 描述了具有可导向天线方向图和使用这种天线的技术的天线。 根据本发明，使用具有一个或多个NULL的天线方向图。 通过使用数字控制信号，导航天线方向图，使得诸如多路径信号的信号干扰源将位于空值中。 以这种方式，可以使接收信号的S / N比最大化，从而便于解调。 本发明的技术可以应用于电视，计算机设备，移动设备以及各种其他系统。 用于控制天线的数字命令可以包括多个信息字段，例如方向字段，信道字段，增益字段和极性字段。 无法支持指定字段的天线无视不支持的字段中的信息。 每个支持的字段中的信息被解码并用于调整相应的天线特性。
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5.发明授权Method and apparatus directed to processing trick play video data to compensate for intentionally omitted data 失效针对处理特技播放视频数据以补偿有意省略的数据的方法和装置
公开(公告)号：US5576902A
公开(公告)日：1996-11-19
申请号：US333097
申请日：1994-11-01
IPC分类号： H04N5/92 , G11B5/008 , G11B15/12 , G11B15/18 , G11B15/467 , G11B20/12 , G11B27/00 , H04N5/00 , H04N5/7826 , H04N5/783 , H04N7/26 , H04N7/52 , H04N7/54 , H04N9/804 , H04N9/82 , H04N9/888 , H04N5/78
CPC分类号： H04N21/4147 , G11B15/125 , G11B15/1875 , G11B15/4675 , G11B27/005 , G11B5/0086 , H04N19/00 , H04N19/184 , H04N19/37 , H04N19/61 , H04N19/895 , H04N21/236 , H04N21/434 , H04N7/54 , H04N9/8042 , H04N9/888 , G11B15/4673 , G11B2220/90 , H04N19/30 , H04N5/78263 , H04N5/783 , H04N9/8227
摘要： Digital video tape recorder apparatus that generates commands to instruct a television receiver to perform special processing, e.g., processing designed to enhance image quality, on video data received from the digital video tape recorder during trick play operation is disclosed. The commands from the video tape recorder inform the television receiver that the video tape recorder is operating in trick play mode and that video processing not performed on normal play video data output by the video tape recorder during normal play operation should be performed on the trick play video data which is output during trick play operation. The video data output during trick play operation is a subset of the normal play video data. The video processing commands output during trick play operation instruct a receiver to perform video processing intended to compensate for normal play data intentionally omitted by the video tape recorder from the trick play video data because of, e.g., data limitations resulting from the limited amount of data that can be accurately read from a tape during trick play operation. Method of generating the video processing commands which are output to a receiver during trick play video tape recorder operation are also disclosed.
摘要翻译： 公开了在特技播放操作期间产生用于指示电视接收机执行特殊处理（例如，旨在提高图像质量的处理）的视频数据的数字录像机装置。 磁带录像机的命令通知电视接收机，磁带录像机正在特技播放模式下操作，并且在正常播放操作期间，由磁带录像机输出的普通播放视频数据不进行视频处理，应在特技播放 在特技播放操作期间输出的视频数据。 在特技播放操作期间输出的视频数据是普通播放视频数据的子集。 在特技播放操作期间输出的视频处理命令指示接收机进行旨在补偿由录像带录像机故意忽略的特技播放视频数据的正常播放数据的视频处理，因为例如由有限数据量产生的数据限制 在特技播放操作期间可以从磁带准确地读取。 还公开了在特技播放录像机操作期间产生输出到接收机的视频处理命令的方法。
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6.发明授权Signal-seeking tuning system with automatic bandswitching for a television receiver 失效信号调谐系统，具有电视接收机的自动频带切换功能
公开(公告)号：US4398303A
公开(公告)日：1983-08-09
申请号：US326173
申请日：1981-11-30
摘要： A signal-seeking tuning system for a television receiver scans the VHF and UHF signal bands until a present TV channel signal is detected. Tuning voltage is developed by a digital-to-analog converter in response to a binary word stored in an up/down counter. The value of the binary word increases when a scan-up signal is applied and decreases when a scan-down signal is applied. Band signals are automatically sequenced to the next higher frequency band when the binary word "rolls-over" from a maximum to a minimum value, or to the next lower frequency band when the binary word rolls-over from its minimum to its maximum value. Scanning is stopped by inhibiting changing of the binary word when a valid sequence of AFT signals is detected.Thereafter, the tuning voltage is compensated for drifts by incrementing or decrementing the binary word whenever the AFT signal departs from a predetermined condition. This correction is inhibited, however, when the binary word is at its minimum or maximum value so that unwanted bandswitching is avoided.
摘要翻译： 用于电视接收机的信号寻找调谐系统扫描VHF和UHF信号频带，直到检测到当前TV信道信号。 响应于存储在上/下计数器中的二进制字，由数 - 模转换器开发调谐电压。 当施加扫描信号时，二进制字的值增加，并且当施加扫描信号时，该值减小。 当二进制字从最大值转换到最小值时，当二进制字“滚转”时，频带信号自动排序到下一个较高频带，或者当二进制字从最小值翻转到最大值时，到下一个较低频带。 当检测到AFT信号的有效序列时，禁止二进制字的改变来停止扫描。 此后，只要AFT信号偏离预定条件，通过递增或递减二进制字来对调谐电压进行补偿。 然而，当二进制字处于其最小值或最大值时，该校正被禁止，从而避免了不期望的频带切换。
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公开(公告)号：US4339827A
公开(公告)日：1982-07-13
申请号：US210247
申请日：1980-11-25
摘要： Tuning circuitry for a VHF television (TV) antenna tunes such antenna for signals corresponding to the TV channel selected and couples those signals to the tuning system of a television receiver. An antenna has a pair of signal terminals across which the tuning circuitry connects to form a resonance circuit therewith for tuning the antenna. A variable capacitance responds to a control voltage to develop the appropriate value of tuning capacitance. Impedances, e.g. inductors or capacitors or resistors, are coupled to the resonance circuit at least at selected times by switches. An amplifier couples signals from the resonance circuit to the tuning system of the TV receiver.
摘要翻译： 用于VHF电视（TV）天线的调谐电路针对与所选择的TV频道相对应的信号来调谐这样的天线，并将这些信号耦合到电视接收机的调谐系统。 天线具有一对信号端子，调谐电路连接在一起，以形成谐振电路，用于调谐天线。 可变电容响应于控制电压以产生适当的调谐电容值。 阻抗，例如 电感器或电容器或电阻器至少在选择的时刻由开关耦合到谐振电路。 放大器将来自谐振电路的信号耦合到电视接收机的调谐系统。
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公开(公告)号：US08125386B2
公开(公告)日：2012-02-28
申请号：US12612483
申请日：2009-11-04
申请人： John G. N. Henderson , Carl Scarpa
发明人： John G. N. Henderson , Carl Scarpa
CPC分类号： H01Q1/007 , H01Q1/24 , H01Q3/2611 , H01Q7/005
摘要： Antennas with steerable antenna patterns and techniques for using such antennas are described. In accordance with the invention, antenna patterns with one or more NULLs are used. Through the use of digital control signals the antenna pattern is steered so that a source of signal interference, e.g., a multipath signal, will be located in a NULL. In this manner the received signal's S/N ratio can be maximized thereby facilitating demodulation. The techniques of the invention can be applied to television, computer devices, mobile devices and a wide range of other systems. Digital commands to control an antenna may include multiple information fields, e.g., a direction field, a channel field, a gain field and a polarity field. Antennas incapable of supporting the specified fields disregard information in fields which are not supported. Information in each supported field is decoded and used to adjust the corresponding antenna characteristic.
摘要翻译： 描述了具有可导向天线方向图和使用这种天线的技术的天线。 根据本发明，使用具有一个或多个NULL的天线方向图。 通过使用数字控制信号，导航天线方向图，使得诸如多路径信号的信号干扰源将位于空值中。 以这种方式，可以使接收信号的S / N比最大化，从而便于解调。 本发明的技术可以应用于电视，计算机设备，移动设备以及各种其它系统。 用于控制天线的数字命令可以包括多个信息字段，例如方向字段，信道字段，增益字段和极性字段。 无法支持指定字段的天线无视不支持的字段中的信息。 每个支持的字段中的信息被解码并用于调整相应的天线特性。
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公开(公告)号：US07633441B2
公开(公告)日：2009-12-15
申请号：US11839202
申请日：2007-08-15
申请人： John G. N. Henderson , Carl Scarpa
发明人： John G. N. Henderson , Carl Scarpa
CPC分类号： H01Q1/007 , H01Q1/24 , H01Q3/2611 , H01Q7/005
摘要： Antennas with steerable antenna patterns and techniques for using such antennas are described. In accordance with the invention, antenna patterns with one or more NULLs are used. Through the use of digital control signals the antenna pattern is steered so that a source of signal interference, e.g., a multipath signal, will be located in a NULL. In this manner the received signal's S/N ratio can be maximized thereby facilitating demodulation. The techniques of the invention can be applied to television, computer devices, mobile devices and a wide range of other systems. Digital commands to control an antenna may include multiple information fields, e.g., a direction field, a channel field, a gain field and a polarity field. Antennas incapable of supporting the specified fields disregard information in fields which are not supported. Information in each supported field is decoded and used to adjust the corresponding antenna characteristic.
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10.发明授权Digital recording and playback device error correction methods and apparatus for use with trick play data 失效用于特技播放数据的数字记录和播放设备纠错方法和设备
公开(公告)号：US5583650A
公开(公告)日：1996-12-10
申请号：US462877
申请日：1995-06-05
申请人： Frank A. Lane , Jill M. Boyce , Jack S. Fuhrer , John G. N. Henderson , Katsuo Mohri , Masafumi Nakamura , Takaharu Noguchi , Hiroo Okamoto , Masuo Oku , Michael A. Plotnick
发明人： Frank A. Lane , Jill M. Boyce , Jack S. Fuhrer , John G. N. Henderson , Katsuo Mohri , Masafumi Nakamura , Takaharu Noguchi , Hiroo Okamoto , Masuo Oku , Michael A. Plotnick
IPC分类号： G11B5/008 , G11B5/09 , G11B15/12 , G11B15/18 , G11B20/12 , G11B27/00 , G11B27/30 , H04N5/44 , H04N5/775 , H04N5/7826 , H04N5/783 , H04N5/93 , H04N5/945 , H04N7/015 , H04N7/26 , H04N7/52 , H04N9/78 , H04N9/79 , H04N9/804 , H04N9/806 , H04N9/82 , H04N9/888 , H04N19/89 , H04N5/76 , H04N5/78
CPC分类号： H04N21/4147 , G11B15/1875 , G11B20/1207 , G11B27/005 , G11B27/3027 , H04N19/37 , H04N19/89 , H04N21/4334 , H04N5/4401 , H04N5/93 , H04N7/015 , H04N7/52 , H04N9/78 , H04N9/8042 , H04N9/8047 , G11B15/125 , G11B2220/90 , G11B5/0086 , G11B5/09 , H04N5/775 , H04N5/78263 , H04N5/78266 , H04N5/783 , H04N5/945 , H04N9/7921 , H04N9/8066 , H04N9/8227 , H04N9/888
摘要： Methods of operating a digital video recording and playback device, such as a video tape recorder, to arrange trick play data into one or more groups, to generate error correction bits for each group of trick play data, e.g., a group of trick play data blocks, and to correct the data after being read back using the error correction bits is disclosed. The trick play data blocks are made to be smaller than normal play data blocks with multiple trick play data blocks being equal in size to a single normal play data block. By making a group of trick play data blocks equal in size to a single normal play data block, the group of trick play data blocks may be processed as a unit by the same error correction circuitry and in the same manner used to process individual normal play data blocks. In accordance with one embodiment, the error correction bits for a group of trick play data blocks are calculated treating the data in the group of trick play data blocks as a single unit. The error correction bits are appended to the last data block in the group of trick play data blocks. During trick play operation the trick play data blocks are read back and combined according to trick play data groups. Each group of trick play blocks is then processed using the same error correction circuitry used to process a normal play data block.
摘要翻译： 操作诸如磁带录像机的数字视频记录和回放设备的方法来将特技播放数据排列到一个或多个组中，以为每组特技播放数据生成纠错位，例如一组特技播放数据 块，并且在使用误差校正位读取之后校正数据被公开。 使特技播放数据块小于具有与单个正常播放数据块大小相等的多个特技播放数据块的普通播放数据块。 通过使一组特技播放数据块的大小与单个正常播放数据块相等，该特技播放数据块组可以通过相同的纠错电路以与用于处理各个正常播放相同的方式作为一个单元来处理 数据块。 根据一个实施例，计算一组特技播放数据块的纠错位，将特技播放数据块组中的数据作为一个单位处理。 误差校正位附加到特技播放数据块组中的最后一个数据块。 在特技播放操作期间，根据特技播放数据组读取并组合特技播放数据块。 然后使用用于处理正常播放数据块的相同的纠错电路处理每组特技播放块。
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