Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
163 words
A method of transmitting a Multiplexed Analogue Component (M.A.C.) television signal, comprising producing first chrominance component and luminance component signals representing lines of a television signal capable of reconstruction in a conventional M.A.C. television receiver to produce a first television picture having a first aspect ratio and a first number of lines, the component signals for each line being time compressed and placed sequentially at times appropriate to allow reconstruction of the television picture but occypying less than the whole line time, the improvement comprising generating further luminance component and chrominance component signals and adding said further chrominance and luminance component signals to portions of the television signal not containing said first signals, the further component signals being capable of reproduction together with the first signals to produce an extended definition picture, the further component signals not interfering with the reproduction from said first chrominance and luminance component signals of a television picture having said first aspect ratio and first number of lines.
Claim 2
Independent Claim
163 words
A method of transmitting a Multiplexed Analogue Component (M.A.C.) television signal, comprising producing first chrominance component and luminance component signals representing lines of a television signal capable of reconstruction in a conventional M.A.C. television receiver to produce a first television picture having a first aspect ratio and a first number of lines, the component signals for each line being time compressed and placed sequentially at times appropriate to allow reconstruction of the television picture but occypying less than the whole line time, the improvement comprising generating further luminance component and chrominance component signals and adding said further chrominance and luminance component signals to portions of the television signal not containing said first signals, the further component signals being capable of reproduction together with the first signals to produce an extended definition picture, the further component signals not interfering with the reproduction from said first chrominance and luminance component signals of a television picture having said first aspect ratio and first number of lines.
Claim 3
Dependent Claim
35 words
A method according to claim 1, wherein the further component luminance signals are added to the line signals containing said first chrominance and luminance component signals prior to said first chrominance and luminance component signals.
Claim 4
Dependent Claim
54 words
A method according to claim 1, wherein the television signal comprises a number of line signals which do not contain said first chrominance component and luminance component signals, and wherein further chrominance signals are added to one or more of said lines which do not contain said first chrominance component and luminance component signals.
Claim 5
Dependent Claim
56 words
A method of receiving and reproducing television signals transmitted according to claim 1, comprising recovering said first chrominance component and luminance component and further component signals from the transmitted line signals, temporarily storing all the component signals, and then selectively reading out stored signals at times depending on whether enhanced pictures or standard pictures are required.