Patent Number: 6,311,014

Title: Unified audio/video interface for a digital video disk system

Abstract: An interface for a digital video disk system utilizing a small number of pins which allows a requesting device to initiate data requests and which avoids the phenomenon of lock-up. The interface includes an input interface terminal at which a data request signal from an output device is received in a first mode and at which a sampling signal is received from the output device in a second mode; a first output interface terminal at which a sampling/synchronizing signal is transmitted from the source device to the output device in the first mode, the sampling/synchronizing signal synchronizing and sampling the data request signal, and at which a first synchronizing signal is transmitted from the source device to the output device in the second mode, the first synchronizing signal synchronizing data output; at least one data output interface terminal at which requested data is transmitted from the source device to the output device in the first and second modes, a second output interface terminal at which a second synchronization signal is transmitted from the source device to the output device at the start of data transmission in the first mode; a third output interface terminal at which a data strobe signal is transmitted from the source device to the output device in the first mode, the data strobe signal latching the requested data, and at which a third synchronization signal is transmitted from the source device to the output device in the second mode, the third synchronization signal synchronizing the left/right audio frames; and a fourth output terminal at which a data error signal is transmitted from the source device to the output device in the first and second modes, the data error signal indicating that the requested data contains an error.

Inventors: Nguyen; Loc (Laguna Niguel, CA), Zhu; Li (Mission Viejo, CA)

Assignee: Texas Instruments Incorporated

International Classification: G11B 20/10 (20060101); H04N 5/84 (20060101); H04N 5/85 (20060101); H04N 9/804 (20060101); H04N 005/781 ()

Expiration Date: 10/30/2018