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    • 76. 发明授权
    • Method of providing video on demand with VCR like functions
    • 按需提供VCR视频功能的方法
    • US5357276A
    • 1994-10-18
    • US984038
    • 1992-12-01
    • Robert O. BankerJeffrey B. HuppertzMichael T. HayashiDavid B. LettVoytek E. GodlewskiMichael W. Raley
    • Robert O. BankerJeffrey B. HuppertzMichael T. HayashiDavid B. LettVoytek E. GodlewskiMichael W. Raley
    • H04N7/173H04N21/2543H04N21/472H04N21/84H04N7/16
    • H04N21/2543G06K7/0086H04N21/47202H04N21/84H04N7/17318
    • A near video on demand time shifting feature for a subscriber terminal emulates the video cassette recorder functions of pause, fast forward, and rewind for a NVOD service subscription. The subscriber terminal stores global transactions concerning NVOD events in an event portion of memory. The subscriber terminal provides an on screen display feature for assisting in ordering the NVOD service and a user interface which provides the functions of pause, fast forward and rewind. When viewing a NVOD event, if the subscriber selects the pause function, the subscriber terminal causes a pause on screen display to be viewed for one time increment. After the elapse of the time increment, the subscriber terminal will tune the channel of the next showing which is one time increment earlier than that presently viewed. If the subscriber selects the rewind function, the subscriber terminal will tune the channel of the next showing which is one time increment earlier than that presently viewed. If the subscriber selects the fast forward function, the subscriber terminal will tune the channel of the previous showing which is one time increment later than that presently received.
    • 用户终端的近视频点播时移功能模拟NVOD服务订阅的暂停,快进和快退的录像机录像机功能。 用户终端在存储器的事件部分中存储关于NVOD事件的全局事务。 用户终端提供用于协助订购NVOD服务的屏幕显示功能和提供暂停,快进和倒带功能的用户界面。 当查看NVOD事件时,如果用户选择了暂停功能,则用户终端在屏幕显示上暂停一个时间增量。 在经过时间增量之后,用户终端将调整下一个显示的频道,该频道比当前观看的更早一个时间增量。 如果用户选择倒带功能,则用户终端将调谐下一个显示的频道,其比现在观看的更早一个时间增量。 如果用户选择快进功能,则用户终端将对先前显示的频道进行调谐,该频道比当前接收的频道晚一个时间增量。
    • 78. 发明授权
    • Sync suppression scrambling of television signals for subscription TV
    • 用于订阅电视的电视信号的同步抑制加扰
    • US4523228A
    • 1985-06-11
    • US466698
    • 1983-02-15
    • Robert O. Banker
    • Robert O. Banker
    • H04N7/171H04N7/16H04K1/04
    • H04N7/1713
    • Sync suppressed television signals transmitted with timing pulses in dynamically variable time delayed relationship with respect to the suppressed sync pulses are descrambled with a high degree of noise immunity by decoding tag pulses transmitted with the timing pulses into a digital signal representing the dynamically variable time delay relationship in terms of the number of such tag pulses during a predetermined period of time during each field of the TV signal, into a digital signal. The decoding is carried out to provide the digital signal with different values for different groups, each containing a different number of tag pulses. The pulses which restore the sync pulses in the TV signal in each field are timed with respect to the timing pulses in accordance with the value of the digital signal. Dynamic delay variations which vary from field to field or for any selected number of fields, during any selected period of time, may be accommodated in the descrambling of the TV signals and with high noise immunity due to the use of groups of tagging pulses in the decoding of the dynamically varying delays.
    • 通过将以定时脉冲发送的标签脉冲解码为表示动态可变时间延迟关系的数字信号,以相对于被抑制的同步脉冲的动态可变时间延迟关系发送的同步抑制电视信号被以高度的抗噪声性解扰 在TV信号的每个场期间的预定时段期间的这种标签脉冲的数量方面,变成数字信号。 执行解码以为不同组提供具有不同值的数字信号,每个包含不同数量的标签脉冲。 根据数字信号的值,在每个场中恢复TV信号中的同步脉冲的脉冲相对于定时脉冲定时。 在任何选择的时间段内,从场到场或任何选定数量的场变化的动态延迟变化可以被适应于电视信号的解扰和具有高抗噪声性,这是由于使用组中的标记脉冲 解码动态变化的延迟。