Patent ID: 7714934

Claim:
A data receiving method for receiving image data via first, second and third channels; wherein synchronizing signal data is provided in a blanking period of the first channel and control information is provided in the blanking period of the second and/or third channels; the method comprising the steps of: receiving image data; wherein said control information in the blanking period of the second and/or third channels of the image data has been replaced with encoded data units; wherein each encoded data unit is one of plural predefined kinds of specific data; wherein the encoded data units have been encoded by dividing packets of digital audio data by a predetermined number of bits; wherein each packet of digital audio data has a parity code; separating the encoded data units which are arranged in the blanking period of the second and/or third channels; decoding the separated encoded data units; performing error detection on the decoded data units by detecting errors in the predefined kinds of specific data; and assembling the decoded data units into packets of digital audio data; the assembled packets having error flags marking the detected errors.