Patent ID: 8311396

Claim:
A DVD (digital versatile disk) video playback system comprising a source device operable to read data from a DVD-Video disk, a user interface configured to accept a user operation, and a plurality of sink devices in communication with the source device, the source device comprising: a transmission unit operable to transmit a program stream read from the DVD-Video disk to a plurality of sink devices, the program stream including presentation data in a multiplexed form; and a control information unit operable to incorporate control information into the program stream to be transmitted by the transmission unit, the control information not included in the original program stream read from the DVD-Video disk, the control information operable to control the decoding of the presentation data multiplexed in the original program stream; wherein the control information unit is configured to incorporate at least one of a plurality of system parameters associated with a DVD-Video standard into the program stream to be transmitted, the plurality of system parameters being playback control parameters which control playback of the DVD-Video disk on the source device; and each sink device of the plurality of sink devices comprising: a decoder operable to decode the presentation data extracted from the program stream received from the source device and generate a resultant decoded presentation data; and a decode controller operable to control the decoding performed by the decoder in accordance with the control information extracted from the program stream; wherein when the user interface unit accepts a user operation intended to control one of the plurality of sink devices, the user interface unit is configured to send user operation information indicating the accepted user operation to the source device and the one of the plurality of sink devices; wherein the decode controller of each sink device of the plurality of sink devices is configured to store, as a local system parameter, a playback control parameter operable to control decoding of the presentation data performed by the corresponding decoder, and, when the user operation information is received from the user interface unit, the decode controller is configured to change the local system parameter in accordance with the received user operation information; and wherein when the source device receives the user operation information from the user interface unit, the source device is configured to change a system parameter associated with the source device in accordance with the received user operation information.