Video signal switching

摘要

A method and system are provided in which a processor may perform fast source switching and/or automatic source switching by keeping active the signals from multiple sources. The processor may determine which received video signals are locked-in within a front-end portion of the processor. A video signal may be locked-in when a demodulator is locked to a carrier in the video signal or when a decoder is programmed to decode the video signal. During operation, the processor may switch from processing a current video signal to processing a video signal selected from those determined to be locked-in. The processor may maintain active a portion of a back-end portion of the processor to handle the switch from the current video signal to the selected video signal. The processor may switch to process between video signals when a predetermined content and/or metadata is detected within one of the video signals.

主权项

1. A device, comprising:
an acquisition module that is configured to acquire a first video signal and a second video signal; a video processing module that is configured to maintain active at least a portion of a first video processing pipeline for processing the first video signal for output to a display device, a remaining portion of the first video processing pipeline being switched off or placed in an idle mode, and to maintain active at least a portion of a second video processing pipeline for processing the second video signal for output to the display device, a remaining portion of the second video processing pipeline being switched off or placed in the idle mode; and a switch module that is configured to switch between providing the first video signal to the first video processing pipeline for output to the display device without passing any video signal through the maintained active at least the portion of the second video processing pipeline, and providing the second video signal to the second video processing pipeline, including an activated remaining portion of the second video processing pipeline, for output to the display device.