Apparatus and method for determining time code addresses at low tape speed
AssigneeSony Corporation
InventorsWilliam A. Menezes, Douglas D. Kuper, David Wheeler
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AssigneeSony Corporation
InventorsWilliam A. Menezes, Douglas D. Kuper, David Wheeler
Estimating the term…
For determining the address, in terms of its respective longitudinal time code, of a selected video or other information signal recorded on a tape which has both longitudinal time codes and control pulses or control track signals recorded along its length, when the information signal is selected while the tape is being moved at a speed which is insufficient for the reliable reading of its longitudinal time codes, the tape is accelerated to a speed sufficient for the longitudinal time codes to be reliably read and a subsequently encountered longitudinal time code is read, the reproduced control pulses are counted between the time that an information signal is selected and the time that the subsequently encountered longitudinal time code is read, and a derived address of the selected information signal is determined, in terms of its respective longitudinal time code, as a function of the value of the subsequently encountered longitudinal time code and the count of the reproduced control pulses.
In an apparatus for determining the addresses of selected information signals recorded on a tape, said tape also having recorded on it a series of longitudinal time codes recorded along the length of said tape and designating corresponding addresses of recorded information signals, and a series of control pulses which are recorded serially along said tape and being reproduced for the purpose of synchronizing the motion of said tape relative to transducer means which reads said information signals on said tape, said apparatus including time code reading means capable of reliable reading said longitudinal time codes only when said tape is moved at a speed which is sufficient therefor, selectively operable means for generating a marking signal when an information signal recorded at a desired point of said tape is read, and control pulse reading means for reproducing said control pulses as said tape moves;
An apparatus according to claim;
A method for determining the address of a selected information signal recorded on a tape which also has recorded on it a series of longitudinal time codes recorded along its length and designating corresponding addresses of recorded information signals and a series of control pulses recorded along said tape for the purpose of synchronizing the motion of said tape relative to the motion of transducer means by which said information signal on said tape are read, and in which said longitudinal time codes can be reliably read only when said tape is moved at a speed which is sufficient therefor;
Dependencies are inferred from the claim text.