Apparatus for receiving encoded messages on the screen of a television receiver and for redisplay thereof on the same receiver screen in a readable format
First Claim
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1. Apparatus for receiving optically encoded data transmitted via a broadcast television receiver and superimposed on the normal pictorial information, and for displaying said data in readable format on the screen of said television receiver, comprising:
- optically responsive means at the television receiver for receiving the optically encoded data from the screen thereof;
means coupled to said optically responsive means for generating horizontal and vertical synchronization signals in synchronization with the program received by the television receiver;
means coupled to said optically responsive means for processing the encoded data and converting it into a format which allows its display on the screen of the television receiver in a readable format;
means utilizing said generated synchronization signals for establishing synchronization between said processed data and the program received by the television receiver; and
means for coupling said processed-synchronized data to the antenna terminals of the television receiver, so that said data is displayed on the screen of said television receiver in place of a portion of the pictorial information of the broadcast program without extracting the pictorial information and reprocessing it, whereby encoded data can be received and displayed in a readable format in conjunction with an ongoing broadcast program without connection to the inside of the television receiver.
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Abstract
A television message system is disclosed wherein encoded data displayed on a small area of a television screen is received by a photosensitive pickup which responds to the encoded data, and including a message processor for storing viewer selected data and processing such data for redisplay on the television screen as readable alpha-numerics.
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Citations
11 Claims
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1. Apparatus for receiving optically encoded data transmitted via a broadcast television receiver and superimposed on the normal pictorial information, and for displaying said data in readable format on the screen of said television receiver, comprising:
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optically responsive means at the television receiver for receiving the optically encoded data from the screen thereof; means coupled to said optically responsive means for generating horizontal and vertical synchronization signals in synchronization with the program received by the television receiver; means coupled to said optically responsive means for processing the encoded data and converting it into a format which allows its display on the screen of the television receiver in a readable format; means utilizing said generated synchronization signals for establishing synchronization between said processed data and the program received by the television receiver; and means for coupling said processed-synchronized data to the antenna terminals of the television receiver, so that said data is displayed on the screen of said television receiver in place of a portion of the pictorial information of the broadcast program without extracting the pictorial information and reprocessing it, whereby encoded data can be received and displayed in a readable format in conjunction with an ongoing broadcast program without connection to the inside of the television receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. Apparatus for receiving optically encoded data transitted via a broadcast television receiver and superimposed on the normal pictorial information as an intensity modulation of a small area thereof, and for displaying said data in readable format on the screen of said television receiver, comprising:
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optically responsive means at the television receiver for receiving the optically encoded data from the screen thereof, said optically responsive means including a photosensitive device; means for automatically positioning said photosensitive device over said small area; means coupled to said optically responsive means for generating synchronization signals in synchronization with the program received by the television receiver; means coupled to said optically responsive means for processing the encoded data and converting it into a format which allows its display on the screen of the television receiver in a readable format; means utilizing said generated synchronization signals for establishing synchronization between said processed data and the program received by the television receiver; and means for coupling said processed-synchronized data to the antenna terminals of the television receiver, whereby encoded data can be received and displayed in a readable format in conjunction with a broadcast program without connection to the inside of the television receiver.
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Specification