Variable-mode information signal reproduction apparatus with tracking control
AssigneeCanon Kabushiki Kaisha
InventorsTaizou Hori, Yasuyuki Tanaka
Life of this patent
Estimating the term…
Abstract
A reproduction apparatus reproduces information signals recorded in a plurality of recording modes having different information sizes of an information signal to be recorded per unit time, discriminates the recording mode of the reproduced information signal, and controls tracking between a recording medium and head in accordance with the discrimination result.
Claims26
An apparatus for reproducing information signals recorded in a plurality of recording modes having different information sizes of an information signal to be recorded per unit time, comprising:
- reproduction means for reproducing information signals recorded in the plurality of modes from a recording medium;
- mode discrimination means for discriminating a recording mode of the information signal reproduced by said reproduction means;
- tracking means for controlling tracking between the recording medium and said reproduction means;
- and
- control means for controlling tracking by said tracking means in accordance with a discrimination result of said mode discrimination means.
An apparatus for reproducing information signals recorded in a plurality of recording modes which compress information sizes of information signals to be recorded at different compression ratios, comprising:
- reproduction means for reproducing information signals recorded in the plurality of modes from a recording medium;
- mode discrimination means for discriminating a recording mode of the information signal reproduced by said reproduction means;
- tracking means for controlling tracking between the recording medium and said reproduction means;
- and
- control means for controlling tracking by said tracking means in accordance with a discrimination result of said mode discrimination means.
An apparatus for reproducing image signals from a recording medium on which a large number of tracks are formed, and image signals are recorded in a first recording mode which records an image signal for one frame on n tracks, and a second recording mode which records an image signal for one frame on m (m>n) tracks, comprising:
- reproduction means for reproducing the image signals by tracing the recording medium using a plurality of heads;
- mode discrimination means for discriminating a recording mode of the image signal reproduced by said reproduction means;
- tracking means for controlling tracking between the recording medium and said reproduction means;
- and
- control means for controlling tracking by said tracking means in accordance with a discrimination result of said mode discrimination means.
An apparatus for reproducing image signals from a tape-like recording medium on which image signals are recorded in a first recording mode which compresses an information size of an image signal at a first compression ratio and records an image signal for one frame on n tracks, and a second recording mode which compresses an information size of an image signal at a second compression ratio different from the first compression ratio and records an image signal for one frame on 2n tracks, comprising:
- reproduction means for reproducing the image signals by tracing the recording medium using first and second heads having different azimuth angles;
- discrimination means for discriminating a recording mode of the image signal reproduced by said reproduction means;
- expansion means for expanding the information size of the reproduced image signal on the basis of a discrimination result of said discrimination means;
- generation means for extracting a pilot signal from the reproduced image signal, and generating a tracking error signal on the basis of the pilot signal;
- convey means for conveying the tape-like recording medium on the basis of the tracking error signal;
- and
- control means for controlling a generation timing of the tracking error signal by said generation means in accordance with the discrimination result of said discrimination means.
A method of controlling an apparatus for reproducing information signals recorded in a plurality of recording modes having different information sizes of an information signal to be recorded per unit time, comprising:
- a reproduction step of reproducing information signals recorded in the plurality of modes from a recording medium using reproduction means;
- a mode discrimination step of discriminating a recording mode of the information signal reproduced in the reproduction step;
- a tracking step of controlling tracking between the recording medium and the reproduction means;
- and
- a control step of controlling tracking in the tracking step in accordance with a discrimination result in the mode discrimination step.
A method of controlling an apparatus for reproducing information signals recorded in a plurality of recording modes which compress information sizes of information signals to be recorded at different compression ratios, comprising:
- a reproduction step of reproducing information signals recorded in the plurality of modes from a recording medium using reproduction means;
- a mode discrimination step of discriminating a recording mode of the information signal reproduced in the reproduction step;
- a tracking step of controlling tracking between the recording medium and the reproduction means;
- and
- a control step of controlling tracking in the tracking step in accordance with a discrimination result in the mode discrimination step.
A method of controlling an apparatus for reproducing image signals from a recording medium on which a large number of tracks are formed, and image signals are recorded in a first recording mode which records an image signal for one frame on n tracks, and a second recording mode which records an image signal for one frame on m (m>n) tracks, comprising:
- a reproduction step of reproducing the image signals by tracing the recording medium using a plurality of heads;
- a mode discrimination step of discriminating a recording mode of the image signal reproduced in the reproduction step;
- a tracking step of controlling tracking between the recording medium and said plurality of heads;
- and
- a control step of controlling tracking in the tracking step in accordance with a discrimination result in the mode discrimination step.
Dependencies are inferred from the claim text.