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1. 发明公开

EP0232446A1 Wireless transmission from the television set to the televison station 失效转让
标题翻译： DrahtloseÜbertragungvomFernsehgerätzur Fernsehstation。
公开(公告)号：EP0232446A1
公开(公告)日：1987-08-19
申请号：EP86101763.0
申请日：1986-02-12
申请人： TV ANSWER INTERNATIONAL, INC.
发明人： Morales-Garza, Fernando , Morales-Garza, Oscar , Ortiz-Salinas, Jorge E.
IPC分类号： H04N7/173 , H04H9/00
CPC分类号： H04N7/17309 , H04H60/33 , H04H60/44 , H04H60/90 , H04N7/002 , H04N7/085 , H04N21/4758 , H04N21/6112 , H04N21/6162 , H04N2007/17372
摘要： Query signals are transmitted by wireless means from the television station to the television set. Response units at receiver locations have a radio frequency transmitter send a response to the station inquiry sent on horizontal lines of the T.V. signal at controlled times identifying each station. This response is a simple r-f beep synchronized with the T.V. signal, in such a way that each set transmitter emits the beep only in its unique time slot. Simplified response units are tuned to the standard intermediate frequency of the T.V. sets and thus need not be wired in and need not have a channel selector.
摘要翻译：查询信号通过无线方式从电视台传输到电视机。接收机位置处的响应单元具有一个射频发射器发送一个响应，发送在T.V.信号的水平线上发送的台站询问，在受控时间标识每个站。该响应是与T.V.信号同步的简单的r-f蜂鸣声，使得每个发送器仅在其唯一的时隙中发出蜂鸣声。简化的响应单元被调谐到T.V.集合的标准中间频率，因此不需要连接并且不需要具有频道选择器。

2. 发明授权

EP0269094B1 Control of rf answer pulses in a tv answer back system 失效转让
标题翻译：电视回答系统中RF解答脉冲的控制
公开(公告)号：EP0269094B1
公开(公告)日：1993-07-14
申请号：EP87117414.0
申请日：1987-11-25
申请人： TV ANSWER INTERNATIONAL, INC.
发明人： Morales-Garza, Fernando , Morales-Garza, Oscar , Ortiz-Salinas, Jorge E.
IPC分类号： H04N9/00
CPC分类号： H04N7/17309 , H04H20/72 , H04H60/33 , H04H60/90 , H04N2007/17372
摘要： In a TV answer back system where many receiver stations communicate with a TV transmitter station by means of rf pulses generated by rf oscillators at the receiver station, the requirement for keeping all oscillators on frequency is achieved without crystal control by automatically controlling the rf oscillator frequency using synchronization signals carried in the video signal received from the TV studio. By this invention it has been possible to control the frequency of multiple megahertz oscillator as accurately as desired from relatively low frequency synchronizing signals such as the vertical and horizontal video sync pulses. Thus an oscillations counter is gated for a very accurate time period by the sync pulses, and the oscillation count is compared with a datum count representing the desired oscillation frequency. The requirement to prevent receiver stations from answering with rf pulses in response to queries contained in home video recordings of previously broadcast signals is achieved by encoding broadcast time on all query containing TV transmissions, and by comparing at receiver stations broadcast time information from received signal with time from a local battery backed clock contained at each receiver station, thus discrimination of video recordings is possible by comparing received video broadcast time with local time.

3. 发明授权

EP0232446B1 Wireless transmission from the television set to the televison station 失效转让
标题翻译：从电视机到电视台的无线传输
公开(公告)号：EP0232446B1
公开(公告)日：1992-04-22
申请号：EP86101763.0
申请日：1986-02-12
申请人： TV ANSWER INTERNATIONAL, INC.
发明人： Morales-Garza, Fernando , Morales-Garza, Oscar , Ortiz-Salinas, Jorge E.
IPC分类号： H04N7/173 , H04H9/00
CPC分类号： H04N7/17309 , H04H60/33 , H04H60/44 , H04H60/90 , H04N7/002 , H04N7/085 , H04N21/4758 , H04N21/6112 , H04N21/6162 , H04N2007/17372

4. 发明公开

EP0269094A3 Control of rf answer pulses in a tv answer back system 失效转让
标题翻译：电视回答系统中RF解答脉冲的控制
公开(公告)号：EP0269094A3
公开(公告)日：1990-04-04
申请号：EP87117414.0
申请日：1987-11-25
申请人： TV ANSWER INTERNATIONAL, INC.
发明人： Morales-Garza, Fernando , Morales-Garza, Oscar , Ortiz-Salinas, Jorge E.
IPC分类号： H04N9/00
CPC分类号： H04N7/17309 , H04H20/72 , H04H60/33 , H04H60/90 , H04N2007/17372
摘要： In a TV answer back system where many receiver stations communicate with a TV transmitter station by means of rf pulses generated by rf oscillators at the receiver station, the requirement for keeping all oscillators on frequency is achieved without crystal control by automatically controlling the rf oscillator frequency using synchronization signals carried in the video signal received from the TV studio. By this invention it has been possible to control the frequency of multiple megahertz oscillator as accurately as desired from relatively low frequency synchronizing signals such as the vertical and horizontal video sync pulses. Thus an oscillations counter is gated for a very accurate time period by the sync pulses, and the oscillation count is compared with a datum count representing the desired oscillation frequency. The requirement to prevent receiver stations from answering with rf pulses in response to queries contained in home video recordings of previously broadcast signals is achieved by encoding broadcast time on all query containing TV transmissions, and by comparing at receiver stations broadcast time information from received signal with time from a local battery backed clock contained at each receiver station, thus discrimination of video recordings is possible by comparing received video broadcast time with local time.

5. 发明公开

EP0269094A2 Control of rf answer pulses in a tv answer back system 失效转让
标题翻译： Kontrolle von hochfrequenten Antwortimpulsen in einem Fernsehumfragesystem。
公开(公告)号：EP0269094A2
公开(公告)日：1988-06-01
申请号：EP87117414.0
申请日：1987-11-25
申请人： TV ANSWER INTERNATIONAL, INC.
发明人： Morales-Garza, Fernando , Morales-Garza, Oscar , Ortiz-Salinas, Jorge E.
IPC分类号： H04N9/00
CPC分类号： H04N7/17309 , H04H20/72 , H04H60/33 , H04H60/90 , H04N2007/17372
摘要： In a TV answer back system where many receiver stations communicate with a TV transmitter station by means of rf pulses generated by rf oscillators at the receiver station, the requirement for keeping all oscillators on frequency is achieved without crystal control by automatically controlling the rf oscillator frequency using synchronization signals carried in the video signal received from the TV studio. By this invention it has been possible to control the frequency of multiple megahertz oscillator as accurately as desired from relatively low frequency synchronizing signals such as the vertical and horizontal video sync pulses. Thus an oscillations counter is gated for a very accurate time period by the sync pulses, and the oscillation count is compared with a datum count representing the desired oscillation frequency.
The requirement to prevent receiver stations from answering with rf pulses in response to queries contained in home video recordings of previously broadcast signals is achieved by encoding broadcast time on all query containing TV transmissions, and by comparing at receiver stations broadcast time information from received signal with time from a local battery backed clock contained at each receiver station, thus discrimination of video recordings is possible by comparing received video broadcast time with local time.
摘要翻译：在电视应答系统中，许多接收机站通过在接收机站的rf振荡器产生的rf脉冲与电视发射台进行通信，通过自动控制射频振荡器频率来实现保持所有振荡器频率的要求，而无需晶体控制使用从电视演播室接收的视频信号中携带的同步信号。通过本发明，可以从诸如垂直和水平视频同步脉冲的相对低频同步信号中精确地控制多兆赫兹振荡器的频率。因此，振荡计数器通过同步脉冲选通非常精确的时间周期，并且将振荡计数与表示期望的振荡频率的数据计数进行比较。通过在包含TV传输的所有查询上对广播时间进行编码，并且通过在接收站处比较来自接收信号的广播时间信息与来自接收信号的广播时间信息的比较，来实现防止接收站响应包含在先前广播信号的家庭视频记录中的查询的接收站应答的要求从每个接收站处包含的本地电池支持的时钟的时间，因此通过将接收到的视频广播时间与本地时间进行比较来识别视频记录。

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