Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
237 words
In combination with a television screen employing raster lines, an apparatus for displaying an input analog signal as a function of time, means to digitize the input signal so that each level of quantization corresponds to one of the raster lines, a memory device, means to sequence the digitized input signal to said memory device through predetermined sampling interval positions for each raster line, first comparator means, counter means to derive digitized raster line numbers, means connecting outputs of said memory device and said counter means to said first comparator means, said first comparator means having respective "greater than", "equal" and "less than" outputs, storage register means, means to insert the output of said memory device into said storage register means just before each change of address of the input signal to said memory device, whereby said storage register means contains the previous digitized input signal while said memory device contains a current digitized input signal, second comparator means having respective "greater than" and "less than" outputs, means connecting the outputs of said storage register means and said raster line counter means to said second comparator means, spot-brightening means, and means to activate said spot-brightening means responsive respectively to concurrent "greater than" and "less than" outputs from the first and second comparator means, to concurrent "less than" and "greater than" outputs from said first and second comparator means, or an "equal" output from said first comparator means.
Claim 2
Dependent Claim
237 words
In combination with a television screen employing raster lines, an apparatus for displaying an input analog signal as a function of time, means to digitize the input signal so that each level of quantization corresponds to one of the raster lines, a memory device, means to sequence the digitized input signal to said memory device through predetermined sampling interval positions for each raster line, first comparator means, counter means to derive digitized raster line numbers, means connecting outputs of said memory device and said counter means to said first comparator means, said first comparator means having respective "greater than", "equal" and "less than" outputs, storage register means, means to insert the output of said memory device into said storage register means just before each change of address of the input signal to said memory device, whereby said storage register means contains the previous digitized input signal while said memory device contains a current digitized input signal, second comparator means having respective "greater than" and "less than" outputs, means connecting the outputs of said storage register means and said raster line counter means to said second comparator means, spot-brightening means, and means to activate said spot-brightening means responsive respectively to concurrent "greater than" and "less than" outputs from the first and second comparator means, to concurrent "less than" and "greater than" outputs from said first and second comparator means, or an "equal" output from said first comparator means.
Claim 3
Dependent Claim
74 words
An analog signal display apparatus of claim 1, wherein said means to activate said spot-brightening means include means responsive to concurrent "greater than" and "less than" outputs and comprises two respective AND gates, and said spot-brightening means comprises an OR gate and includes means connecting said concurrent "greater than" and "less than" outputs from said respective AND gates and said "equal" output from said first comparator means to the inputs of said OR gate.
Claim 4
Dependent Claim
33 words
An analog signal display apparatus of claim 2, wherein said means to activate said spot-brightening means include a delay device connecting the "equal" output from said first comparator means to the OR gate.
Claim 5
Dependent Claim
28 words
An analog signal display apparatus of claim 3, wherein said delay is a delay device which provides a delay approximately equal to 1/2 the raster line sampling interval.
Claim 6
Dependent Claim
24 words
An analog signal display apparatus of claim 1, including delay means coupling the "equal" output from said first comparator means to said spot-brightening means.
Claim 7
Dependent Claim
29 words
An analog signal display apparatus of claim 5, wherein said delay means is a delay means which provides a delay approximately equal to 1/2 the raster line sampling interval.