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31. 发明授权

US4823387A Television tuning system with provisions for tuning RF signals with scrambled video information 失效
标题翻译：电视调谐系统，用于调整具有加扰视频信息的RF信号
公开(公告)号：US4823387A
公开(公告)日：1989-04-18
申请号：US47848
申请日：1987-05-08
申请人： Juri Tults
发明人： Juri Tults
IPC分类号： H03J1/00 , H04N5/50 , H04N7/171 , H04N7/167
CPC分类号： H04N7/1713 , H03J1/0041
摘要： A tuning system for tuning non-standard frequency RF signals which utilizes searches for non-standard RF signals by examining both a synchronization component and an AFT signal at each of a successive number of search frequencies. If the AFT signal indicates the detection of a carrier, the frequency at which this occurs is stored. However, this frequency is not caused to be tuned unless the search has been completed and the synchronization signal has not indicated the presence of a carrier. Thus, the reliability afforded by the synchronization component is maintained while adding the capability for tuning scrambled channels.
摘要翻译：一种用于调谐非标准频率RF信号的调谐系统，其通过在连续数量的搜索频率中的每一个检查同步分量和AFT信号来利用搜索非标准RF信号。如果AFT信号指示载波的检测，则存储发生该频率的频率。然而，除非搜索完成并且同步信号没有指示载波的存在，否则不会调谐该频率。因此，在增加用于调谐扰频信道的能力的同时，保持由同步分量提供的可靠性。

32. 发明授权

US4689685A Television tuning system with AFT provisions 失效
标题翻译：电视调谐系统与AFT规定
公开(公告)号：US4689685A
公开(公告)日：1987-08-25
申请号：US824602
申请日：1986-01-31
申请人： William J. Testin , Juri Tults
发明人： William J. Testin , Juri Tults
IPC分类号： H04N5/50
CPC分类号： H04N5/50
摘要： In a tuning control system for a television receiver, an analog AFT signal is sampled during blanking intervals when the amplitude of the video carrier is relative constant and therefore cannot affect the amplitude of the AFT signal significantly. This reduces the AFT filtering requirements.
摘要翻译：在电视接收机的调谐控制系统中，当视频载波的振幅相对恒定时，在消隐间隔期间对模拟AFT信号进行采样，因此不能显着影响AFT信号的幅度。这减少了AFT过滤要求。

33. 发明授权

US4623925A Television receiver having character generator with non-line locked clock oscillator 失效
标题翻译：带有字符发生器的电视接收机，带非锁定时钟振荡器
公开(公告)号：US4623925A
公开(公告)日：1986-11-18
申请号：US666862
申请日：1984-10-31
申请人： Juri Tults
发明人： Juri Tults
IPC分类号： H04N5/278 , G09G5/12 , H04N5/445 , H04N5/04 , H04N5/262
CPC分类号： G09G5/12 , H04N5/44504
摘要： A character generator in a receiver provides a character signal in raster scan form for display with a received video signal. An oscillator, not synchronized with the horizontal synchronizing component of the video signal, supplies a clock signal to the generator for controlling timing of character elements. A control unit provides a control signal representative of a time difference between the clock signal and the horizontal synchronizing component. A delay unit, interposed in the clock signal path, selectively imparts delay to the clock signal in response to the control signal for reducing line-to-line variations in the timing of displayed character elements.
摘要翻译：接收机中的字符发生器以光栅扫描形式提供字符信号，以便用接收到的视频信号进行显示。与视频信号的水平同步分量不同步的振荡器将时钟信号提供给发生器，以控制字符元件的定时。控制单元提供表示时钟信号和水平同步分量之间的时间差的控制信号。插入在时钟信号路径中的延迟单元响应于用于减少显示的字符元件的定时的线间变化的控制信号而选择性地向时钟信号施加延迟。

34. 发明授权

US4485404A Digital aft system which is activated during vertical retrace intervals 失效
标题翻译：数字后方系统在垂直回扫间隔期间被激活
公开(公告)号：US4485404A
公开(公告)日：1984-11-27
申请号：US413769
申请日：1982-09-01
申请人： Juri Tults
发明人： Juri Tults
IPC分类号： H03J7/06 , H04N5/50
CPC分类号： H03J7/065 , H04N5/50
摘要： A digital fine tuning system for a television receiver includes a counter arrangement for measuring the frequency of the IF picture carrier by counting cycles of the IF picture carrier during a measurement interval and comparing the count at the end of the measurement interval to a predetermined count related to the nominal frequency of the IF picture carrier. To prevent counting, and thereby frequency measurement errors, due to the overmodulation of the picture carrier during image intervals, the frequency measurement operation is enabled during a predetermined portion of the vertical retrace interval when the picture carrier is not overmodulated.
摘要翻译：一种用于电视接收机的数字微调系统包括：计数器装置，用于通过在测量间隔期间对IF图像载波的周期进行计数来测量IF图像载波的频率，并将测量间隔结束时的计数与预定计数相关到IF图像载体的标称频率。为了防止在图像间隔期间由于图像载体的过调制而引起的频率测量误差的计数，从而在图像载波未被过调制的情况下，在垂直回扫间隔的预定部分期间能够进行频率测量操作。

35. 发明授权

US4442547A Counter arrangement useful in a frequency locked loop tuning system for measuring the frequency of a local oscillator signal 失效
标题翻译：用于测量本地振荡器信号频率的锁频环调谐系统中的计数器布置
公开(公告)号：US4442547A
公开(公告)日：1984-04-10
申请号：US413768
申请日：1982-09-01
申请人： Juri Tults
发明人： Juri Tults
IPC分类号： H03L7/06 , H04B1/16 , H04N5/44
CPC分类号： H03L7/06
摘要： A counter arrangement for measuring the frequency of a local oscillator signal produced in a television tuning system includes a main down counter and an auxiliary down counter. Prior to a measurement interval, the channel number of the selected channel is loaded into the main down counter and a number which is related to the frequency separation, S, in mHz, between the channels by the relationship:PS+Pwhere P is an integer greater than zero, is loaded into the auxiliary down counter. During the measurement interval, the main counter is enabled to count down from the channel number in response to the local oscillator signal. Each time the count of the main counter equals zero, the count in the auxiliary counter is reduced by one and the channel number is again loaded into the main counter. When the count in the auxiliary counter equals P, a band dependent number is loaded into the main counter. Thereafter, each time the count of the main counter equals zero the band dependent number is again loaded into the main counter and the count of the auxiliary counter is again reduced by one until the count of the auxiliary counter equals one. After the end of the measurement interval the count in the main counter is examined to generate an error signal from which a tuning voltage for the tuning system is generated.
摘要翻译：用于测量在电视调谐系统中产生的本地振荡器信号的频率的计数器装置包括主向下计数器和辅助递减计数器。在测量间隔之前，所选通道的通道号被加载到主向下计数器中，并且与通道间的频率间隔S（以mHz为单位）相关联的数字通过下列关系：PS + P，其中P是整数大于零，被加载到辅助递减计数器。在测量间隔期间，主计数器能够响应本地振荡器信号从通道号倒数。每次主计数器的计数等于零时，辅助计数器的计数减1，通道号再次加载到主计数器。当辅助计数器中的计数等于P时，带宽依赖的数字被加载到主计数器中。此后，每当主计数器的计数等于零时，频带依赖号码再次加载到主计数器中，并且辅助计数器的计数再次减1，直到辅助计数器的计数等于1。在测量间隔结束后，检查主计数器中的计数以产生误差信号，从而产生用于调谐系统的调谐电压。

36. 发明授权

US4364094A Digital arrangement for detecting a correct television synchronization signal output useful in a signal seeking tuning system 失效
标题翻译：用于检测在信号寻找调谐系统中有用的正确电视同步信号输出的数字装置
公开(公告)号：US4364094A
公开(公告)日：1982-12-14
申请号：US261449
申请日：1981-05-08
申请人： Michael P. French , Juri Tults
发明人： Michael P. French , Juri Tults
IPC分类号： H04N5/44 , H03J7/18 , H04N5/50 , H04N7/02
CPC分类号： H03J7/18
摘要： A detector for determining the validity of a composite synchronization signal to indicate the presence of a picture carrier includes two threshold comparators set just below and just above the maximum and minimum amplitude excursions, respectively, of the synchronization pulses. The output pulses of the threshold comparators are counted during a reference interval to determine if the frequency of the synchronization pulses is correct. Due to the threshold comparators, noise transients are detected and counted so as to cause an incorrect frequency indication. In addition, reference pulses are counted during the duration of the output pulses generated by one of the threshold comparators to determine if the width of the synchronization pulses is correct. The number of incorrect counts of the frequency or width is counted during a measurement interval. If the number of incorrect counts exceeds a predetermined limit, the composite synchronization signal is not a valid one. Hysteresis is also provided to prevent sporadic transitions of sync presence indication.
摘要翻译：用于确定用于指示图像载体的存在的复合同步信号的有效性的检测器包括分别设置在同步脉冲的最大和最小幅度偏移之下的刚好在正上方的两个阈值比较器。在参考间隔期间对阈值比较器的输出脉冲进行计数，以确定同步脉冲的频率是否正确。由于阈值比较器，噪声瞬变被检测和计数，从而导致不正确的频率指示。此外，在由阈值比较器之一产生的输出脉冲的持续时间内对参考脉冲进行计数，以确定同步脉冲的宽度是否正确。频率或宽度的不正确计数的数量在测量间隔期间进行计数。如果错误计数的数量超过预定限制，则复合同步信号不是有效的。还提供迟滞以防止同步存在指示的偶发转变。

37. 发明授权

US4241450A Automatic turn-off apparatus for a radio or television receiver 失效
标题翻译：无线电或电视接收机的自动关机装置
公开(公告)号：US4241450A
公开(公告)日：1980-12-23
申请号：US70021
申请日：1979-08-27
申请人： Harold Blatter , Juri Tults
发明人： Harold Blatter , Juri Tults
IPC分类号： H03J7/18 , H03J7/06 , H03J7/28 , H04B1/16
CPC分类号： H04W52/0241 , H03J7/065
摘要： A television receiver includes a tuning system comprising a phase locked loop (PLL) configuration and an automatic fine tuning (AFT) configuration which are selectively enabled to operate in response to respective levels of a MODE signal to tune standard and nonstandard frequency RF carriers. In the absence of the RF carrier for a selected channel, the operations of PLL and AFT configurations are alternately enabled and the level of the MODE signal changes accordingly. The MODE signal is applied to a capacitor which develops a control voltage for turning the receiver "off" after the MODE signal has changed levels for a predetermined time because of the absence of a RF carrier.
摘要翻译：电视接收机包括调谐系统，该调谐系统包括锁相环（PLL）配置和自动微调（AFT）配置，其被选择性地能够响应于MODE信号的相应电平而工作以调谐标准和非标准频率RF载波。在没有用于所选通道的RF载波的情况下，PLL和AFT配置的操作被交替使能，并且MODE信号的电平相应地改变。 MODE信号被施加到电容器，该电容器在MODE信号由于没有RF载波而改变了预定时间的电平之后，产生用于使接收器“关闭”的控制电压。

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