Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
357 words
Arrangement for recording a video signal and a corresponding audio signal in slant tracks on a longitudinal magnetic record carrier, the tracks each being built up of a clock run-in part, a tracking tone recording part, and a audio- and video signal recording part, the arrangement comprising - an input terminal for receiving the audio- and video signal, - conversion means for converting the audio- and video signal into a format in which it can be recorded on the record carrier, - clock run-in signal generating means, - tracking tone signal generating means, - signal combining means for combining the clock run-in signal, the tracking tone signal, and the converted audio- and video signal, so as to enable the recording of the said signals in the clock run-in part, the tracking tone recording part and the audio-and video signal recording part respectively of a track, characterized in that the tracking tone signal generator means is adapted to generate a tracking tone signal for recording in the tracking tone recording part in one of the tracks, the tracking tone signal in the track comprising a concatenation of a number of packets, each packet including a sync block having a first or a second disparity and an identification block having a third or a fourth disparity, the disparity of the sync blocks and the identification blocks in the packets in the tracking tone recording part being chosen such that the running digital sum of the tracking tone signal varies as a relatively low frequency waveform compared to the bit frequency of the signal in the tracking tone recording part, the first and the second disparities having an equal value but opposite polarity, the third and the fourth disparities having an equal value but opposite polarity, the identification blocks in the subsequent packets in the tracking tone recording part in each of the tracks each include a first and a second binary count value, the second binary count value being the binary inverted value of the first binary count value, the first binary count value relating to the sequence count number of the packets in a tracking tone recording part.
Claim 2
Dependent Claim
50 words
Arrangement as claimed in claim 1, characterized in that, the identification blocks in the subsequent packets in the tracking tone recording part of a track further comprise a fixed pattern, the fixed pattern in an identification block having a disparity which is equal to the disparity of said identification block.
Claim 3
Dependent Claim
16 words
Arrangement as claimed in claim 1, characterized in that, the first disparity equals the third disparity.
Claim 4
Dependent Claim
14 words
Arrangement as claimed in claim 1, characterized in that the third disparity equals zero.
Claim 5
Dependent Claim
33 words
Arrangement as claimed in any one of the preceding claims, characterized in that the bits of the first binary count value and the second binary count value in an identification block are interleaved.
Claim 6
Dependent Claim
45 words
Arrangement as claimed in any one of the preceding claims, characterized in that the sync blocks in the packets have the first, the second or at least one other disparity, the absolute value of said other disparity being different from said first or second disparity.
Claim 7
Dependent Claim
44 words
Arrangement as claimed in any one of the preceding claims, characterized in that the identification blocks in the packets have the third, the fourth or at least one other disparity, the value of said other disparity being different from said third or fourth disparity.
Claim 8
Dependent Claim
19 words
Record carrier obtained by means of the arrangement for recording as claimed in any one of the preceding claims.