INFORMATION CODER, DISC RECORDING MEDIUM AND REPRODUCING DEVICE THEREFOR

摘要

PURPOSE:To easily reproduce only preferential information from consecutive information by selecting the kind of information matching a code quantity of a disk, multiplexing the information and coding the information so as to switch the kind of information at a rotational angle of the disk. CONSTITUTION:A changeover switch 7 selects a picture code of a buffer 12 or 6 and the selected code is outputted from a terminal 9 and given to a counter 13. The counter 13 counts a code quantity and a timing signal is given to a changeover controller 8 for each prescribed code quantity. The controller 8 controls a changeover switch 7 in response to a ratio of a predetermined code transfer rate of a timing signal from the counter 13, existing TV information and HDTV difference information. The changeover switch 7 selects the buffer 6 or 12 under the control of the changeover controller 8. The changeover is implemented in each timing when a virtual track takes a predetermined angle.