Patent ID: 7221406

Claim:
A method of producing digital data comprising the steps of; making first arrangements for 12-, 14- or 16-bit word digital data constituting a digital video signal, which include a frame rate of 24 Hz, 25 Hz or 30 Hz, 1125 lines per frame, 1080 active lines per frame, a sampling frequency of 74.25 MHz and 1920 active data samples per line, making second arrangements for the 12-, 14- or 16-bit word digital data, in which 12-bit codes each containing an upper 8-bit portion representing 00h or FFh (h indicates a hexadecimal number) are predetermined to be forbidden code for each active line in case of the 12-bit word digital data, 14-bit codes each containing an upper 8-bit portion representing 00h or FFh are predetermined to be forbidden code for each active line in case of the 14-bit word digital data, and 16-bit codes each containing an upper 8-bit portion representing 00h or FFh are predetermined to be forbidden code for each active line in case of the 16-bit word digital data, and forming the 12-, 14- or 16-bit word digital data constituting the digital video signal in accordance with the first and second arrangements.