Sony Corporation

Masamichi Takayama

Takao Inoue

Kenji Yamasaki

Tetsuo Kani

Fumitoshi Ishida

Based on a digital recorder/player taken as a basic apparatus and which accommodates a field frequency of 60 fields/sec or a frame frequency of 30 frames/sec, an apparatus is implemented to record or reproduce source video and audio signal originated from the basic apparatus and whose frequency is different from the field or frame frequency. The apparatus includes an input unit, a processor, and a converter provided between the input unit and the processor. The input unit accepts audio data having a specific field frequency and arranged in a specific format, and make baseband processing of the audio data. The processor is designed to process audio data having a basic field frequency (60 fields/sec) and arranged in a basic format. It operates with a clock corresponding to the sampling frequency to make error-corrective encoding of the audio data adapted to the basic format.

Digital recording/reproducing apparatus

A source original HD video signal Sof 24-frame rate is subjected to 2-3 pull-down process, thereby generating a 30-frame rate SD video signal S. The 24-frame rate time code added to the source video signal Sis described in the user area of the VITC data () inserted into the 30-frame rate video signal. The sequence numberindicating the order of fields in one sequence of the pull-down process is described in the user area of the VITC data () inserted in the 30-frame rate video signal. Inverse 2-3 pull-down process is performed on the 30-frame rate video signal recorded on tape, by using the sequence numberdescribed in the user area of the VITC data, thereby generating a 24-frame rate video signal. The 24-frame rate video signal is recorded on a hard disc. A nonlinear editing device () uses the 24-frame rate time code inserted in the user area of the VITC data, thereby generating an edition list that will be supplied to an on-line editing system.

Growing community of inventors

Tokyo, Japan

Masamichi Takayama