Document Type and Number:
Japanese Patent JPS4950819
Kind Code:
A
Abstract:
A converter for a CATV system is described. The converter includes, amongst other circuits, a reader for reading the binary bits on an encoded document and comparing them with a binary bit code which is transmitted from the transmitter on the CATV cable to a subscriber's receiver. If the code on the encoded document and the code received are identical, a signal is generated which enables the converter to process the received television signals so that the subscriber's receiver can present an intelligible program. Provision is also made in accordance with the code on the document, to select a predetermined one of a plurality of channels being transmitted over the CATV cable.
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Application Number:
JP4399673A
Publication Date:
May 17, 1974
Filing Date:
April 18, 1973
Export Citation:
International Classes:
H04N7/16; H04N7/167; (IPC1-7): H04N7/16