Method for configuring memory space in video signal processing apparatus

Abstract

The invention provides a method for configuring memory space. The method is used in a video signal processing apparatus and comprises: setting a first memory space and a second memory space in a memory, wherein the first memory space and the second memory space are at least partially overlapped; determining the category of a signal source; if the signal source is a first video signal source, starting a first processing circuit and storing data correlative to the first video signal source in the first memory space; and if the signal source is a second video signal source, starting a second processing circuit and storing data correlative to the second video signal source in the second memory space, wherein the second processing circuit is inactivated when the first processing circuit is used and the first processing circuit is inactivated when the second processing circuit is used.

Description

【Technical Field】 [0001] The present invention relates to a video signal processing mechanism, in particular to a memory space configuration method used in a video signal processing device. 【Background technique】 [0002] For conventional television signal processing devices, regardless of the source of the received image type, the corresponding memory space used by multiple hardware processing circuits must be configured in the internal memory element in advance. For example, image sources may include analog TV signal sources, digital TV signal sources, and multimedia signal sources. The prior art personnel have designed corresponding analog TV processing circuits and digital TV signal sources in traditional TV signal processing devices. TV processing circuit and multimedia processing circuit to process different signal sources respectively. However, under the traditional architecture, all signal processing circuits (including analog TV processing circuits, digital TV processin...

AI Technical Summary

Problems solved by technology

However, under the traditional structure, all signal processing circuits (including analog TV processing circuits, digital TV processing circuits and multimedia processing circuits) will start to operate after the TV signal processing device is turned on, and the hardware circuits such as the signal processing circuits The components will correspondingly access the pre-configured memory space. Even if one signal source is currently switched to another signal source (this may be caused by the user deciding to watch other types of video frames), all signal processing circuits will continue to operate.

In other words, even if a certain signal source will not be processed at present (for example, an analog TV signal source is currently processed, and a digital TV signal source is not processed first), under the traditional architecture, the digital TV processing corresponding to the digital TV signal source The circuit will still be activated, and correspondingly allocated a memory space. For the analog TV processing circuit processing the analog TV signal source, the memory space allocated to the digital TV processing circuit has not been released at this time. Therefore, the analog The TV processing circuit also cannot access the memory space

Therefore, the actual memory space allocation method of the traditional TV signal processing device is inefficient, and large-sized memory components must be used to realize it, which increases the manufacturing cost. In addition, all hardware circuit components for processing different signal sources must be turned on and cause The problem of power consumption cannot meet the requirements of energy saving

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