Electronic device and digital display device

摘要

An electronic device switching over a turning on, a turning off and a standby mode is disclosed. The electronic device comprises a sensing unit and a host processing unit. The sensing unit senses a frame image and generates a sensing signal in the standby mode. The host processing unit is electrically connected to the sensing unit for receiving the image signal and performing a host function according to the sensing signal.

主权项

1. An electronic device, comprising:
a sensing unit for sensing a frame image and generating a first sensing signal at a first time and a second sensing signal sensed at a second time, wherein the first time is earlier than the second time; an image reception interface for receiving the first sensing signal and the second sensing signal; a movement detecting engine for comparing the first sensing signal with the second sensing signal to determine whether there are differences between the first sensing signal and the second sensing signal; an image processing engine outputting an encoding signal according to a comparison result outputted from the movement detecting engine, indicating that there are differences between the first sensing signal and the second sensing signal; a video encoding unit for generating an image signal according to the encoding signal; a picture encoding unit for generating image information according to the encoding signal; a scaling engine for generating an adjusted encoding signal according to the encoding signal; and a bus transmission unit for combining the image signal, the image information and the adjusted encoding signal as an image signal; a host processing unit electrically connected to the sensing unit for performing a host function according to the image signal, wherein the image processing engine outputs the encoding signal to the video encoding unit, the picture encoding unit and the scaling engine.