Sony Corporation

Yoichiro Asato

Masakazu Murata

Kazuo Kamiyama

Makoto Tabuchi

Nobuhiro Chiba

Mikio Ishii

Yoshinori Koishikawa

When second material data is inserted into first material data, in point and out point are set in the first material data and the second material data to generate editing processing information. On the basis of the editing processing information, there are prepared first virtual file in which recording area of recording medium with respect to the first material data is described by time codes and second virtual file in which recording area of the recording medium with respect to the second material data is described by time codes. Thus, reproduction is carried out from preroll point positioned forward in point of time with respect to the in point up to postroll point positioned backward in point of time with respect to the out point.

Data recording/reproducing apparatus and method

A transmission method for transmitting data containing inhibition code data that cannot be recorded in a digital recording and/or reproducing apparatus. The method includes a step of converting the inhibition code data into special code data and ID code data having redundancy and not containing the inhibition code data, a step of converting the special code data into two special code data and one special code data and a step of directly outputting data other than the inhibition code data and the special code data. The method enables transmission of the totality of coded data inclusive of the inhibition code data that cannot be recorded.

Method and apparatus for transmitting digital data

Apparatus for adjusting a digital signal which is subjected to analog processing after being reproduced from a record medium. A prerecorded digital test signal is reproduced and written to a field memory which, during a normal playback mode, is used to store the digital video signal that may be reproduced. A loop, which is opened during the normal playback mode, includes DAC and ADC for circulating the digital test signal therethrough a number of times and is coupled to the field memory to receive the stored test signal. A detector detects changes in the test signal after having been circulated through the loop, and these changes are used to establish adjustment settings for adjusting the digital video signal during a playback mode.

Multi-loop testing apparatus with field memory

In a digital information signal reproducing apparatus in which a first digital audio signal and a second digital audio signal having the same contents are recorded on two oblique tracks which are close to each other on a record tape while the latter is run at a normal speed, and in which the first and second digital audio signals are reproduced from the tape by plural rotary heads; a head position controller is operative to control a scanning position of each of the rotary heads so that the latter scan the tracks during variable speed reproduction when the tape is run at a speed different from the normal speed, and to cause the heads to periodically jump over a plurality of the tracks; a detector detects when the rotary heads controlled by the head position controller jump over the plurality of tracks; and a processor responsive to the detector for switching the first digital audio signal and the second digital audio signal, as in a cross-fading operation, for a predetermined period when a jump is detected and selecting one of the first digital audio signal and the second digital audio signal depending on an error state in a period other than such predetermined period, thereby ensuring that error correction capability is not lowered at the time of variable speed reproduction.

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Kanagawa, Japan

Yoichiro Asato