System for securely providing restricted video information
First Claim
1. A system for securely providing to subscribers restricted signals containing display information, for display on electronic screens, said system including an encoder for encoding update data for updating said display information, and a plurality of decoders for decoding said update data and generating a display of a portion of said display information, characterized in that said encoder comprises:
- means for generating a first data stream, said first data stream including a plurality of information identification codes each corresponding to a particular portion of said display information, and a plurality of display identification codes each corresponding to one of said plurality of decoders, each of said information identification codes being associated with at least one display identification code to thereby form information identification code-display identification code sets indicative of the particular portion of display information which each subscriber is authorized to receive;
means for generating a sequence of second data streams including at least one of (i) said information identification codes, (ii) display screen coordinates of an area in a relevant display screen of the respective display information requiring update data, said area having a length less than a full row of data extending across an entire display screen, and (iii) the respective update data; and
means for transmitting said first data stream followed by said sequence of second data streams;
and in that each of said decoders comprises;
means for associating the relevant decoder with one of said display identification codes;
means for recognizing said one display identification code and for storing the information identification code associated with said one display identification code;
means for retrieving said display screen coordinates of the update data corresponding to each of said stored information identification codes;
means for storing said update data at the related display screen coordinates for each associated portion of said display information for subsequent display; and
means for selectively displaying said stored portion of display information.
1 Assignment
0 Petitions
Accused Products
Abstract
A system for securely providing restricted information having an encoder for transmitting selected update data with respective keys and a plurality of uniquely identified decoders for receiving said update data. When saidd decoder matches the key sent with said update, said decoder receives the update data and appropriately positions said update data in respective pages in a store for subsequent viewing on a video display.
139 Citations
51 Claims
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1. A system for securely providing to subscribers restricted signals containing display information, for display on electronic screens, said system including an encoder for encoding update data for updating said display information, and a plurality of decoders for decoding said update data and generating a display of a portion of said display information, characterized in that said encoder comprises:
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means for generating a first data stream, said first data stream including a plurality of information identification codes each corresponding to a particular portion of said display information, and a plurality of display identification codes each corresponding to one of said plurality of decoders, each of said information identification codes being associated with at least one display identification code to thereby form information identification code-display identification code sets indicative of the particular portion of display information which each subscriber is authorized to receive; means for generating a sequence of second data streams including at least one of (i) said information identification codes, (ii) display screen coordinates of an area in a relevant display screen of the respective display information requiring update data, said area having a length less than a full row of data extending across an entire display screen, and (iii) the respective update data; and means for transmitting said first data stream followed by said sequence of second data streams; and in that each of said decoders comprises; means for associating the relevant decoder with one of said display identification codes; means for recognizing said one display identification code and for storing the information identification code associated with said one display identification code; means for retrieving said display screen coordinates of the update data corresponding to each of said stored information identification codes; means for storing said update data at the related display screen coordinates for each associated portion of said display information for subsequent display; and means for selectively displaying said stored portion of display information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system for securely providing to subscribers restricted signals containing display information and selected television signals, for display on electronic screens, said system including an encoder for encoding update data for creating particular portions of display information, and a plurality of decoders for decoding said update and generating said particular portions of display information, characterized in that said encoder comprises:
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means for generating a first data stream including a plurality of information identification codes each corresponding to one of said particular portions of display information, or to one of said television signals, and a plurality of display identification codes each corresponding to one of said plurality of decoders, each of said information identification codes being associated with at least one display identification code to thereby form information identification code-display identification code sets indicative of the particular portions of display information and the selected television signals which each subscriber is authorized to receive; means for generating a second data stream, said second data stream including information identification codes for the selected television signals and for the update data to be transmitted in a following time period corresponding to a picture frame of said selected television signals, coordinates of a temporal location in said time period of said television signals, coordinates of a temporal location in said time period of said update data, and coordinates of an area in a relevant display screen requiring said update data; means for providing said selected television signals and said update data and for positioning said television signals and said update data at said respective coordinates in said time period; and means for transmitting said first and second data streams followed by said time period containing the picture frame of said television signals and said update data; and in that each of said decoders comprises; means for associating the relevant decoder with one of said display identification codes; means for recognizing said one display identification code in said first data stream and for storing the information identification code associated with said one display identification code; means for retrieving said temporal coordinates in said time period of said television signals and update data and said display screen coordinates of said update data corresponding to each of said stored information identification codes; means for storing said update data at the related display screen coordinates for each particular portion of display information for subsequent display; and means for selectively displaying either said particular portion of display information or said television signals using the coordinates therefor. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A decoder, for use in a system for securely providing to subscribers restricted signals containing display information, particular portions of which are updated in accordance with encoded update data, said decoder decoding said update data and generating a display of particular portions of said display information for display on electronic screens, said decoder comprising:
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means for receiving a first data stream, said first data stream including a plurality of information identification codes each corresponding to a particular portion of said display information, and a plurality of display identification codes each corresponding to one of a plurality of decoders, each of said information identification codes being associated with at least one display identification code to thereby form information identification code-display identification code sets indicative of the particular portion of display information which each subscriber is authorized to receive; means for receiving a sequence of second data streams, after said first data stream, said sequence of second data streams including at least one of (i) said information identification codes, (ii) display screen coordinates of an area in a relevant display screen of the respective portions of display information requiring update data, said area having a length less than a full row of data extending across an entire display screen, and (iii) the respective update data; means for associating said decoder with one of said display identification codes; means for recognizing said one display identification code and for storing the information identification code associated with said one display identification code; means for retrieving said display screen coordinates of the update data corresponding to each of said stored information identification codes; means for storing said update data at the related display screen coordinates for each associated portion of display information for subsequent display; and means for selectively displaying said stored portion of display information. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39)
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40. An encoder, for use in a system for securely providing to subscribers restricted signals containing display information, particular portions of which are updated in accordance with encoded update data, said encoder for encoding said update data, for updating particular portions of display information, for subsequent decoding of said update data in a plurality of decoders, for display on electronic screens, said encoder comprising:
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means for generating a first data stream, said first data stream including a plurality of information identification codes each corresponding to a particular portion of said display information, and a plurality of display identification codes each corresponding to one of said plurality of decoders, each of said information identification codes being associated with at least one display identification code to thereby form information identification code-display identification code sets indicative of the particular portion of the display information which each subscriber is authorized to receive; means for generating a sequence of second data streams including at least one of (i) said information identification codes, (ii) display screen coordinates of an area in a relevant display screen of the respective portions of display information requiring update data, said area having a length less than a full row of data extending across an entire display screen, and (iii) the respective update data; and means for transmitting said first data stream followed by said sequence of second data streams. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47)
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48. A decoding method, for use in a system for securely providing to subscribers restricted signals containing display information, particular portions of which are updated in accordance with encoded update data, said decoding method for decoding said update data and generating an information display, for display on electronic screens, comprising the steps of:
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receiving a first data stream including a plurality of information identification codes, each corresponding to a particular portion of said display information, and a plurality of display identification codes, each corresponding to one of a plurality of decoders for decoding said update data, each of said information identification codes being associated with at least one display identification code to thereby form information identification code-display identification code sets indicative of the particular portion of the display information which each subscriber is authorized to receive; receiving a sequence of second data streams, after reception of said first data stream, said sequence of second data streams including at least one of (i) said information identification codes, (ii) display screen coordinates of an area in a relevant display screen of the respective display information requiring update data, said area having a length less than a full row of data extending across an entire display screen, and (iii) the respective update data; associating said decoder with one of said display identification codes; recognizing said one display identification code and storing the information identification code associated with said one display identification code; retrieving said display screen coordinates of the update data corresponding to each of said stored information identification codes; storing the update data at the related display screen coordinates for each associated portion of said display information for subsequent display; and selectively displaying said stored portion of display information. - View Dependent Claims (49)
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50. An encoding method for use in a system for securely providing to subscribers restricted signals containing display information, particular portions of which are updated in accordance with encoded update data, said encoder for encoding said update data, for updating particular portions of display information, for subsequent decoding of said update data in a plurality of decoders, for display on electronic screens, said encoding method comprising the steps of:
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generating a first data stream including a plurality of information identification codes, each corresponding to a particular portion of said display information, and a plurality of display identification codes, each corresponding to one of said plurality of decoders, each of said information identification codes being associated with at least one display identification code to thereby form information identification code-display identification code sets indicative of the particular portion of the display information which each subscriber is authorized to receive; generating a sequence of second data streams including at least one of (i) said information identification codes, (ii) display screen coordinates of an area in a relevant display screen of the respective portions of display information requiring update data, said area having a length less than a full row of data extending across an entire display screen, and (iii) the respective update data; and transmitting said first data stream followed by said sequence of second data streams. - View Dependent Claims (51)
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Specification