公开(公告)号：EP0225664A3

公开(公告)日：1988-12-21

申请号：EP86202084

申请日：1986-11-24

申请人： PHILIPS ELECTRONIC AND ASSOCIATED INDUSTRIES LIMITED ,  N.V. PHILIPS' GLOEILAMPENFABRIEKEN ,  ETABLISSEMENT PUBLIC DE DIFFUSION DIT "TELEDIFFUSION DE FRANCE" ,  ETAT FRANCAIS REPRESENTE PAR LE MINISTRE DES PTT (CENTRE NATIONAL D'ETUDES DES TELECOMMUNICATIONS)

发明人： MURRAY, BRUCE ,  GUILLOU, LOUIS CLAUDE ,  COUTROT, FRANCOISE MARIE RAPHAELE

IPC分类号： H04N7/10 ,  H04N7/03 ,  H04N7/08 ,  H04N7/083 ,  H04N7/167 ,  H04N5/00 ,  H04N7/00 ,  H04N7/16

CPC分类号： H04N7/03 ,  H04N7/08 ,  H04N7/083 ,  H04N7/1675 ,  H04N21/4623

摘要： A receiver having an interface arrangement for connection between said television circuit and a conditional access sub-­ system conveys data via a bus having a four frame bus cycle period with a bit rate corresponding to the line rate. During a first part of the bus cycle period data is conveyed from the receiver to the sub-system sequentially as follows:
i. an address block of 1 byte with the unique address of the sub-system with which the receiver is in communication,
ii. a status block of 1 byte providing status information for the following blocks in the first part,
iii, iv, v. three data blocks each of 93 bytes and each containing an entitlement message,
vi. a keying block of 1 byte conveying keyboard or remote control commands, and
vii, viii. a further block of either 1 / 2 byte (vii) or 2 1 / 2 bytes (vii + viii) conveying frame count information.
During the second and remaining part of the bus cycle period which comprises 30 or 28 bytes, depending on the length of the further block, data is transmitted from the sub-system to the receiver.

摘要翻译： 具有用于电视电路和条件访问子系统之间的连接的接口装置的接收机经由具有四帧总线周期周期的总线以与线路速率对应的比特率来传送数据。 在总线周期的第一部分期间，数据从接收机顺序地传送到子系统，如下所述：i。 一个1字节的地址块，与接收器通信的子系统的唯一地址，ii。 1字节的状态块，提供第一部分中以下块的状态信息，iii，iv，v。 每个93字节的三个数据块，每个包含授权消息，vi。 1字节传输键盘或遥控命令的键控块，vii，viii。 传送帧计数信息的1/2字节（vii）或21/2字节（vii + viii）的另一个块。 在包括30或28字节的总线周期的第二和剩余部分期间，根据其他块的长度，数据从子系统发送到接收机。