Patent ID: 7757252

Claim:
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.