Power management control method and power management system of multimedia smart card

Abstract

The invention discloses a power management control method and a power management system of a multimedia smart card. The method comprises the following steps of: S1, inputting a standby signal of an IR, an RTC or a GIPO through a remote controller or a standby key, and storing the standby signal as a standby logo; S2, receiving standby interruption by a CPU (Central Processing Unit), storing current multimedia display information, sending a reset signal through a first pin of the CPU, triggering a guide standby program, and closing a chip internal function module and a peripheral equipment power supply except for IR, RTC and GIPO input processing after a certain delay; S3, receiving start-up interruption by the CPU under standby frequency, wherein the start-up interruption comprises any one wake-up signal in the IR, RTC or GIPO; and S4, switching on the chip internal function module and the peripheral equipment power supply through the CPU, sending a reset signal through the first pin after a certain delay, and triggering a guide start-up program. Due to the application of the power management control method and the power management system of the multimedia smart card, a standby function can be realized by a simplest hardware design, and the standby power consumption of a whole machine can be controlled to meet product energy consumption requirement.

Description

technical field [0001] The invention relates to a standby optimization scheme of a multimedia smart chip, in particular to a method and system for a multimedia smart chip with a standby mode but not a dormant mode to use the CPU itself to realize power management and control. Background technique [0002] Today, with the development of science and technology, consumer electronics products are closely related to people's lives, and more and more smart consumer electronics products are accepted by people, and their applications continue to flourish. However, with the popularization and use of such consumer electronic products, there are large differences in the frequency of use. Especially as a multimedia television receiver, it needs to be in a standby state often. [0003] Most of the existing multimedia chips are controlled by a single-chip microcomputer, so the board-level power management also needs to be controlled by an external single-chip microcomputer. For an intel...

AI Technical Summary

Problems solved by technology

For an intelligent multimedia chip with a CPU itself, even a single-chip microcomputer will additionally increase the hardware cost

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