Patent ID: 7280661
Filing Date: 2007-10-09
Classification: G06T,G11B,H04N

Abstract:
1. A method for outputting data read from a recording medium, comprising the steps of: determining a type of the recording medium as being a read-only recording medium or a random access recording medium; reading the data from the recording medium in response to a playback command or a recording command, wherein the data does not contain electronic watermark information; decoding the data read from the recording medium; generating and embedding electronic watermark information in the decoded data if the data was read in response to the recording command; wherein said electronic watermark information is based on the type of the recording medium; and outputting the decoded data with the embedded electronic watermark information if the data was read in response to the recording command; and outputting the decoded data without electronic watermark information if the data was read in response to the playback command.