Abstract: A method of generating timestamps for isochronous data includes locking a data stream time and an isochronous network time to a local clock signal such that a bi-directional mapping may be made between the two time domains. Timing information is extracted from both IEEE 1394 based data packets and a conventional house reference signal in order to obtain scale and offset factors that exist between the two signals. The scale and offset factors are applied to a generated video clock signal in order to predict a future video time in terms of IEEE 1394 time.

Abstract: A method of generating timestamps for isochronous data includes locking a data stream time and an isochronous network time to a local clock signal such that a bi-directional mapping may be made between the two time domains. Timing information is extracted from both IEEE 1394 based data packets and a conventional house reference signal in order to obtain scale and offset factors that exist between the two signals. The scale and offset factors are applied to a generated video clock signal in order to predict a future video time in terms of IEEE 1394 time.

Abstract: A method of distributing video reference signals as isochronous data includes distributing a house reference signal among various audio and video devices using isochronous network packets that exclusively contain isochronous header information rather than header information accompanied by audio and/or video data. Because the data associated with a house reference signal typically represents an unused “video black” signal, such data may be discarded without detrimentally affecting to the reference signal.