Television transmission system with multiplexed components
First Claim
1. In a television transmission system in which a television signal is transmitted as a sequence of frames, each frame comprising at least one vertical blanking interval and a plurality of lines comprising a first group of lines occurring within said vertical blanking interval and a second group of lines occurring outside of said vertical blanking interval, substantially all of said first and second groups of lines having first and second time multiplexed portions, said first portion of said first and second groups of lines conveying first information in digital form at a first bit rate and said second portion of said second group of lines conveying vision information, characterized in that:
- said first group of lines comprises a first number of lines and a second number of lines, and said second portion of said first number of lines conveys second information in digital form at a second bit rate which is higher than said first bit rate.
1 Assignment
0 Petitions
Accused Products
Abstract
A component television signal is transmitted as a sequence of television frames with each frame having a plurality of television lines substantially all of which have first and second time multiplexed portions. The first portion (DB) forms the data burst and conveys sound/data information in digital form at a given bit rate while the second portion of each line outside the vertical blanking intervals (VBI) conveys vision information (U/V, Y). The second portion of at least some of the lines in the verical blanking intervals (VBI) convey additional information in digital form at a higher bit rate than the given bit rate and which may be twice the given bit rate. This additional information can be the digital channel information for a digitally assisted television signal.
21 Citations
22 Claims
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1. In a television transmission system in which a television signal is transmitted as a sequence of frames, each frame comprising at least one vertical blanking interval and a plurality of lines comprising a first group of lines occurring within said vertical blanking interval and a second group of lines occurring outside of said vertical blanking interval, substantially all of said first and second groups of lines having first and second time multiplexed portions, said first portion of said first and second groups of lines conveying first information in digital form at a first bit rate and said second portion of said second group of lines conveying vision information, characterized in that:
said first group of lines comprises a first number of lines and a second number of lines, and said second portion of said first number of lines conveys second information in digital form at a second bit rate which is higher than said first bit rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
Specification