Navigation system for a multichannel digital television system
First Claim
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1. A decoder for controlling the display of a plurality of digital television channels, wherein said decoder is configured to:
- receive a program in encrypted form on a first channel of the plurality of digital television channels, wherein the program comprises both encrypted audio and encrypted video;
receive the program in unencrypted form on a second channel of the plurality of digital television channels, wherein the second channel corresponds to a mosaic comprising a plurality of windows;
create the mosaic comprising a plurality of unencrypted programs, including the program in unencrypted form, wherein each of the plurality of encrypted unencrypted programs is shown within a respective window of the plurality of windows;
display the mosaic on the second channel;
receive a selection for the program in the mosaic on the second channel; and
determine that full access rights are not available to a user for the program while the program is displayed in encrypted form in the mosaic on the second channel,wherein the decoder is configured to prohibit one of only audio access and only visual access to the program while the program is displayed in the mosaic on the second channel upon determining that full access rights are not available for the program, wherein the one of only audio access and only visual access is prohibited for the program in the mosaic on the second channel after a predetermined length of time, wherein the program remains in encrypted form on the first channel so that both audio access and visual access to the program are prohibited on the first channel, and wherein complete audio and visual access to the program is provided on the second channel during the predetermined length of time.
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Abstract
The present invention provides a digital television system where access rights to a programme or channel are received analyzed by the decoder in determining whether to permit or prohibit full audio and visual access by the user to that programme or channel when displayed in respective windows of a mosaic formation.
250 Citations
72 Claims
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1. A decoder for controlling the display of a plurality of digital television channels, wherein said decoder is configured to:
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receive a program in encrypted form on a first channel of the plurality of digital television channels, wherein the program comprises both encrypted audio and encrypted video; receive the program in unencrypted form on a second channel of the plurality of digital television channels, wherein the second channel corresponds to a mosaic comprising a plurality of windows; create the mosaic comprising a plurality of unencrypted programs, including the program in unencrypted form, wherein each of the plurality of encrypted unencrypted programs is shown within a respective window of the plurality of windows; display the mosaic on the second channel; receive a selection for the program in the mosaic on the second channel; and determine that full access rights are not available to a user for the program while the program is displayed in encrypted form in the mosaic on the second channel, wherein the decoder is configured to prohibit one of only audio access and only visual access to the program while the program is displayed in the mosaic on the second channel upon determining that full access rights are not available for the program, wherein the one of only audio access and only visual access is prohibited for the program in the mosaic on the second channel after a predetermined length of time, wherein the program remains in encrypted form on the first channel so that both audio access and visual access to the program are prohibited on the first channel, and wherein complete audio and visual access to the program is provided on the second channel during the predetermined length of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A method of controlling the display of a plurality of digital television channels, comprising:
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receiving a program in encrypted form on a first channel of the plurality of digital television channels, wherein the program comprises both encrypted audio and encrypted video; receiving the program in unencrypted form on a second channel of the plurality of digital television channels, wherein the second channel corresponds to a mosaic comprising a plurality of windows; creating the mosaic comprising a plurality of unencrypted programs, including the program in unencrypted form, wherein each of the plurality of unencrypted programs is shown within a respective window of the plurality of windows; displaying the mosaic on the second channel; receiving a selection for the program in the mosaic; and determining that full access rights are not available to a user for the program while the program is displayed in encrypted form in the mosaic on the second channel, wherein a decoder is configured to prohibit one of only audio access and only visual access to the program while the program is displayed in the mosaic on the second channel upon determining that full access rights are not available for the program, wherein the one of only audio access and only visual access is prohibited for the program in the mosaic on the second channel after a predetermined length of time, wherein the program remains in encrypted form on the first channel so that both audio access and video access are prohibited on the first channel, and wherein complete audio and visual access to the program is provided on the second channel during the predetermined length of time. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70)
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71. A decoder for controlling the display of a plurality of digital television channels, said decoder comprising:
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means for receiving a first program in encrypted form on a first channel of the plurality of digital television channels and a second program in encrypted form on a second channel of the plurality of digital television channels, wherein the first and second programs comprise both encrypted audio and encrypted video; means for receiving the first and second programs in unencrypted form on a third channel of the plurality of digital television channels, wherein the third channel corresponds to a mosaic comprising a plurality of windows; means for displaying the mosaic comprising a plurality of unencrypted programs on the third channel, including the first and second programs in unencrypted form; means for receiving a selection from a user for access to the first program displayed in the mosaic on the third channel; and means for determining that full access rights are not available to the user for the first program while the first program is displayed in encrypted form in the mosaic on the third channel, wherein the decoder is configured to prohibit one of only audio access and only visual access to the unencrypted form of the first program while the first program is displayed in the mosaic upon determining that full access rights are not available for the first program, and wherein the one of only audio access and only visual access is prohibited for the first program in the mosaic on the third channel after a predetermined length of time, wherein the first program remains in encrypted form on the first channel so that both audio access and visual access are prohibited on the first channel, and wherein complete audio and visual access to the first program is provided on the third channel during the predetermined length of time. - View Dependent Claims (72)
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Specification