Patent ID: 8694671

Claim:
A method of isochronously transmitting audio data for recording, the method comprising: establishing an isochronous link over a network between a personal computer and a recording unit; transmitting mute data having a same signal form as a signal form of the audio data but having data other than audio data, from the personal computer to the recording unit, to maintain the isochronous link between the personal computer and the recording unit for a time period that allows the personal computer to cause the recording unit to enter a recording state; while transmitting the mute data, transmitting a recording preparation signal from the personal computer to the recording unit, receiving a preparation acknowledgment from the recording unit in response to the recording preparation signal, transmitting a recording start signal from the personal computer to the recording unit, and receiving a start acknowledgment from the recording unit in response to the recording start signal; and transmitting the audio data from the personal computer to the recording unit; whereby the method provides a synchronous transition between transmission of the mute data and the audio data.