Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
187 words
Digital video tape recording apparatus of the type having block segmenting means for converting a vertical interval of picture data into image blocks of digital picture element data, compression encoding means for compressing the blocks of digital picture element data and generating a compression code representative thereof and recording means for recording said compression code on said magnetic tape, said apparatus comprising: selectable tape drive means for driving said magnetic tape at first or second speeds for recording said compression code, said second speed being approximately 1.5 times faster than said first speed; and first and second rotatable transducer means disposed approximately 180° apart and coupled to said recording means each for recording said compression code when said tape is driven at said first speed and when said tape is driven at said second speed each of said transducer means having a recording gap length for recording a track pitch, said gap length being at least equal to the track pitch recorded by said transducer means when said tape is driven at said second speed, and said first and second transducer means having respectively different azimuth angles.
Claim 2
Dependent Claim
187 words
Digital video tape recording apparatus of the type having block segmenting means for converting a vertical interval of picture data into image blocks of digital picture element data, compression encoding means for compressing the blocks of digital picture element data and generating a compression code representative thereof and recording means for recording said compression code on said magnetic tape, said apparatus comprising: selectable tape drive means for driving said magnetic tape at first or second speeds for recording said compression code, said second speed being approximately 1.5 times faster than said first speed; and first and second rotatable transducer means disposed approximately 180° apart and coupled to said recording means each for recording said compression code when said tape is driven at said first speed and when said tape is driven at said second speed each of said transducer means having a recording gap length for recording a track pitch, said gap length being at least equal to the track pitch recorded by said transducer means when said tape is driven at said second speed, and said first and second transducer means having respectively different azimuth angles.
Claim 3
Dependent Claim
28 words
The apparatus of claim 1 wherein said first and second transducer means record adjacent tracks, without guard bands therebetween, when said tape is driven at said second speed.
Claim 4
Dependent Claim
15 words
The apparatus of claim 1 wherein said compression encoding means includes an orthogonal transform encoder.
Claim 5
Dependent Claim
16 words
The apparatus of claim 3 wherein said orthogonal transform encoder is a discrete cosine transform encoder.
Claim 6
Dependent Claim
20 words
The apparatus of claim 1 wherein said recording means includes a channel encoder for encoding said compression code for recording.
Claim 7
Dependent Claim
14 words
The apparatus of claim 5 wherein said channel encoder comprises an adaptive scrambling circuit.
Claim 8
Dependent Claim
14 words
The apparatus of claim 6 wherein said adaptive scrambling circuit comprises M scrambling circuits.
Claim 9
Dependent Claim
21 words
The apparatus of claim 1 wherein said vertical interval of picture data comprises a field of luminance and color difference signals.
Claim 10
Dependent Claim
21 words
The apparatus of claim 1 wherein said vertical interval of picture data comprises a frame of luminance and color difference signals.
Claim 11
Dependent Claim
46 words
The apparatus of claim 1 wherein each of said first and second transducer means records a track pitch of 6 μm when said tape is driven at said first speed and a track pitch of 9 μm when said tape is driven at said second speed.
Claim 12
Dependent Claim
23 words
The apparatus of claim 1 wherein the recording gap length of each of said first and second transducer means is approximately 9 μm.