Clock signal control method and device

TL;DR: In this article, a clock signal control method and device for adjusting the clock signal frequency of an HDMI interface reading the data can be found, which can be adaptively adjusted based on the saturation or unsaturated state of the cache.

Abstract: The invention discloses clock signal control method and device. The method comprises the following steps of determining the current data storage capacity of a cache; controlling to increase the clock signal frequency of an HDMI interface reading the data to reach the first preset value when that the data storage capacity exceeds the first preset saturation capacity is determined; controlling to decrease the clock signal frequency of the HDMI interface reading the data to reach the second preset value when that the data storage capacity is less than the first preset vacancy capacity is determined, wherein the first preset saturation capacity is more than the first preset vacancy capacity. According to the scheme, the clock signal control method and device have the advantages that the clock signal frequency of the HDMI interface reading the data can be adaptively adjusted based on the saturation or unsaturated state of the cache; therefore, the circumstance that the data are all read from the cache or data are written to fully fill the cache can be avoided, and as a result, stable image and video can be produced.