Disk apparatus, video/audio data processor, and video/audio control method that detect audiovisual frame information to control output

A disk apparatus comprising:

• a disk medium capable of recording/playing back data,
• playback data selection means for selecting said audiovisual data to be output to an external apparatus in audiovisual frame units from among said audiovisual data recorded on said disk medium,
• reading means for reading said audiovisual data selected by said playback data selection means from said disk medium,
• a buffer memory for temporarily storing audiovisual data in audiovisual frame units read from said disk medium,
• buffer memory control means for controlling input/output of said audiovisual data read from said disk medium for said buffer memory, and
• stream data selection means for generating stream data by selecting the data stored in said buffer memory in audiovisual frame units.

An audiovisual data processing apparatus comprising:

• external disk interface means for controlling record/playback of audiovisual data capable of dividing into audiovisual frame units for a disk apparatus,
• external audiovisual apparatus interface means for controlling record/playback of said audiovisual data for an audiovisual apparatus,
• a buffer memory for temporarily storing said audiovisual data, disposed between said external disk interface means and said audiovisual apparatus interface means,
• buffer memory control means for controlling the input/output of said audiovisual data for said buffer memory,
• audiovisual frame detection means for detecting audiovisual frame boundaries from said audiovisual data and for outputting a frame detection signal, and
• transmitted/received data amount calculation means for calculating an amount of audiovisual data stored in said buffer memory in frame units on the basis of said frame detection signal,
• frame address management means for dividing and managing addresses regarding said audiovisual frame boundaries of the audiovisual data stored in said buffer memory as frame address information in accordance with said frame detection signal, and
• writing means for writing said audiovisual data on said disk medium in accordance with said frame address information,
• wherein said external disk interface means is configured to transmit said audiovisual data to said disk apparatus in accordance with said frame address information.

An audiovisual data processing apparatus comprising:

• external disk interface means for controlling record/playback of audiovisual data capable of dividing into audiovisual frame units for a disk apparatus,
• external audiovisual apparatus interface means for controlling record/playback of said audiovisual data for an audiovisual apparatus,
• playback data selection means for selecting said audiovisual data to be transmitted to said external audiovisual apparatus interface means in audiovisual frame units from among said audiovisual data recorded in said disk apparatus,
• reading means for reading said audiovisual data selected by said playback data selection means from said disk apparatus to said buffer memory via said external disk interface means,
• a buffer memory for temporarily storing said audiovisual data in audiovisual frame units read from said disk medium, disposed between said external disk interface means and said audiovisual apparatus interface means,
• buffer memory control means for controlling the input/output of said audiovisual data for said buffer memory, and
• stream data selection means for generating stream data by selecting the data stored in said buffer memory in audiovisual frame units.

An audiovisual control method comprising:

• a step of temporarily storing audiovisual data capable of dividing into audiovisual frame units in a buffer memory,
• a frame detection signal generation step of detecting the audiovisual frame boundaries of said audiovisual data and generating a frame detection signal,
• a step of calculating an amount of audiovisual data stored in said buffer memory in frame units on the basis of said frame detection signal,
• a step of performing division management of addresses regarding said audiovisual frame boundaries of the audiovisual data stored in said buffer memory as frame address information in accordance with said frame detection signal, and
• a step of transmitting said audiovisual data to a disk medium in accordance with management information.