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公开(公告)号：EP0069213A3
公开(公告)日：1983-02-09
申请号：EP82103929
申请日：1982-05-06
申请人： Blaupunkt-Werke GmbH
CPC分类号： G08G1/0962 , G08G1/093 , H04B1/1646 , H04B1/20 , H04R2499/13
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公开(公告)号：EP0141431A3
公开(公告)日：1987-06-24
申请号：EP84113562
申请日：1984-11-09
申请人： SONY CORPORATION
摘要： A digital signal transmitting system includes a signa' generator (22 to 24) for producing a time division multiplexed ditigal audio signals and service bit signals, modulator (26) for modulating a carrier in accordance witt the time division-multiplexed signals and a transmitter (20) to transmit the modulated carrier through a CATV (cable television) transmission line. At a receiver side, the service bit signals are decoded so as to control the channel change-over of a television receiver (30) when an emergency broadcast signal is transmitted. A muting control circuit is also provided so as to mute an audio signal from a D/A (digital-to-analog) converter (52).
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3.发明公开
公开(公告)号：EP0035230A3
公开(公告)日：1981-12-30
申请号：EP81101355
申请日：1981-02-25
发明人： Alvarez, Joseph Anthony, III , Brennen, John Francis , Krug, Robert William , Gobioff, Bruce Dean , Shabe, John
CPC分类号： H04B7/18523 , H04B7/2643
摘要： A method and apparatus are disclosed for conducting broadcast, multipoint, and conference communications in a TDMA network at various data rates while simultaneously conducting point-to-point communications at other data rates, either between local ports or between geographically remote ports during time intervals within a TDMA burst, which are not necessarily predefined. The disclosed apparatus appends a direct destination address to each point-to-point port communication for transmission over a communications link, to directly address the intended destination port. The disclosed invention appends an indirect destination address to each broadcast communication transmitted over the communications link. A broadcast memory (375) is provided at the receiving end of the communications link, for storing correlated direct addresses which are accessed by the indirect destination addresses, to directly address a plurality of intended destination ports. In this manner, both point-to-point and broadcast-type communications can be carried out for a variety of data rates, during time intervals which are not predetermined within the TDMA burst, and with a high degree of connectivity.
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公开(公告)号：EP0188364A3
公开(公告)日：1988-01-13
申请号：EP86300198
申请日：1986-01-14
IPC分类号： H04H01/00
CPC分类号： H04H60/27 , Y10S379/908
摘要： A broadcasting station transmits in succession many independent information packets to a plurality of receiving sets. An information packet comprises a text, a classification code and a distinction code. Text is a sequence of words and symbols which can be converted to recognisable speech information. The classification code indicates the substance of text. A distinction code can be annexed to each different text. A receiving set with registered classification codes selects and accumulates only required information packets according to their code. A receiver can view or listen to the speech informations at a convenient time.
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公开(公告)号：EP0135192A3
公开(公告)日：1987-04-29
申请号：EP84110927
申请日：1984-09-13
申请人： Audicom Corporation
发明人： Howard, Jonathan M.
CPC分类号： H04H20/31
摘要： An audio program is encoded with a subaudible binary code. A first value bit (mark) is a first frequency signal and a second value bit (space) is a second frequency signal. The coded message includes an initialization period constituted by a signal having the mark frequency. In decoding, the mark and space signals are detected through first and second band pass filters specific to the mark and space signal frequencies. The mark and space frequencies are sufficiently different to permit separate filtering. The time duration for each bit of the code is substantial. The decoder through a phase locked loop and integrator reads the bit on the basis of the average value of the bit over the duration of the bit. A synchronization signal provides for synchronous reading of the code. This signal that initiates the decoding operation is generated only in response to the coincident detection of the initialization signal, the notch and a mark response at the phase locked loop.
摘要翻译： 一个音频节目用一个可听的二进制码编码。 第一值位（mark）是第一频率信号，第二值位（空格）是第二频率信号。 编码消息包括由具有标记频率的信号构成的初始化周期。 在解码中，通过专用于标记和空间信号频率的第一和第二带通滤波器来检测标记和空间信号。 标记和空间频率是完全不同的，以允许单独的过滤。 代码的每个位的持续时间是很大的。 通过锁相环和积分器的解码器在位的持续时间内基于位的平均值读取该位。 同步信号提供代码的同步读取。 只有响应于初始化信号的一致检测，陷波和锁相环路上的标记响应才产生启动解码操作的信号。
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公开(公告)号：EP0140224A3
公开(公告)日：1988-01-07
申请号：EP84112068
申请日：1984-10-09
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公开(公告)号：EP0144801A3
公开(公告)日：1987-06-16
申请号：EP84113563
申请日：1984-11-09
申请人： SONY CORPORATION
发明人： Toyoshima, Masakatsu c/o SONY CORPORATION , Hideshima, Yasuhiro c/o SONY CORPORATION , Fujita, Etsumi c/o SONY CORPORATION
摘要： A digital signal transmitting system produces digital signals of up to four different modes for transmission over an unused television channel in an existing cable television transmission line and which requires no more bandwidth than that normally required by a single existing television channel, the various modes of digital signals all include synchronizing signals and service bit signals which are used to address any of the numerous terminals at the receiving side to control access to the various modes of digital signals transmitted over the single channel. By controlling the transmission of the modes to have constant time intervals, which can be selected based upon different sampling times, high quality audio signals may be transmitted or/and data channels or monaural audio signals, all of which may be transmitted over the single cable television transmission line.
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8.发明公开
公开(公告)号：EP0195989A3
公开(公告)日：1988-09-14
申请号：EP86103472
申请日：1986-03-14
申请人： Blaupunkt-Werke GmbH
CPC分类号： H04L27/2338 , H04H40/18 , H04H2201/13 , H04L7/0331
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公开(公告)号：EP0162461A3
公开(公告)日：1987-12-23
申请号：EP85106302
申请日：1985-05-22
申请人： SONY CORPORATION
摘要： A digital signal transmitting system includes a digital signal generator, such as, an A/D (analog-to-digital) converter, for producing digital information signals representing music or data, and a control signal generator for producing a frame synchronizing signal and service bit signals which are time division-multiplied with the digital information signals for producing a composite digital signal. Further, a terminal number and a scramble key code are time division-multiplexed on the service bits within each different frame of the composite digital signal so as to make available the scramble key code at a terminal unit or receiving side of the system.
摘要翻译： 数字信号发送系统包括用于产生表示音乐或数据的数字信息信号的数字信号发生器，诸如A / D（模拟 - 数字）转换器，以及用于产生帧同步信号和服务的控制信号发生器 它与数字信息信号时分地相乘以产生复合数字信号。 此外，在复合数字信号的每个不同帧内的服务比特上，将终端号码和密码密码时分复用，以便在系统的终端单元或接收端提供密码密码。
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公开(公告)号：EP0047522A3
公开(公告)日：1982-04-07
申请号：EP81107029
申请日：1981-09-07
发明人： Kusakabe, Hiromi
CPC分类号： H04H20/49
摘要： Disclosed is a stereo identifying signal detection device, which comprises a circuit (17, 23) for phase detecting a received stereophonic broadcast signal and detecting a stereo identifying signal, an exclusive OR circuit for generating a pulse for every cycle period of the detected stereo identifying signal, and a control circuit (24) for integrating the pulse signal thus generated to obtain a DC voltage used to turn on a stereo receiving state indicating lamp (25).
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