Patent ID: 8077804

Claim:
A transmitting apparatus for transmitting digital data comprising: storage means for storing a delay for digital data due to digital processing inside the transmitting apparatus; and delay information transmitting means for transmitting delay information indicating the delay stored in the storage means, wherein the transmitting apparatus transmits the digital data to a receiving apparatus, the receiving apparatus comprising: storage means for storing a first delay for digital data due to digital processing inside the receiving apparatus; delay information obtaining means for obtaining the delay information, which shows a second delay for the digital data, transmitted from the transmitting apparatus; and delay information generating means for generating delay information indicating a total delay obtained from a total of the first delay stored in the storage means and the second delay indicated by the delay information obtained by the delay information obtaining means, wherein the receiving apparatus receives digital data transmitted from a plurality of transmitting apparatuses, wherein the delay information obtaining means obtains respective delay information transmitted from the plurality of transmitting apparatuses, wherein the receiving apparatus further includes delay means for delaying, based on the delay information obtained by the delay information obtaining means, digital data aside from digital data with a longest delay of the digital data received from the plurality of transmitting apparatuses so as to match the longest delay, and wherein the delay information generating means calculates a total of the first delay stored in the storage means and the longest delay of delays indicated by the delay information obtained by the delay information obtaining means.