CN101715045B - Method for realizing low power consumption and true standby function of set-top box - Google Patents

Method for realizing low power consumption and true standby function of set-top box Download PDF

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Publication number
CN101715045B
CN101715045B CN2009101128482A CN200910112848A CN101715045B CN 101715045 B CN101715045 B CN 101715045B CN 2009101128482 A CN2009101128482 A CN 2009101128482A CN 200910112848 A CN200910112848 A CN 200910112848A CN 101715045 B CN101715045 B CN 101715045B
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Prior art keywords
standby
program
sdram
cache
cpu
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CN2009101128482A
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CN101715045A (en
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方立
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Fujian Newland Communication Science Technology Co Ltd
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Fujian Newland Communication Science Technology Co Ltd
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Abstract

The invention relates to a digital TV set-top box, in particular to a method for realizing low power consumption and true standby function of a set-top box. The standby program in the method runs in a cache of a CPU of the set-top box and realizes the power consumption control on the set-top box during standby by the cache. The invention executes the running of the standby program by the cache of the CPU of the set-top box, reduces the frequency to the allowable lower frequency of a chip through adjusting the clock frequency of the CPU after entering a standby mode, and greatly lowers the consumption of energy by switching off relevant energy consumption components of a peripheral circuit during standby, thereby really realizing the environmental protection.

Description

STB is realized the method for low power consumption and true standby function
[technical field]
The present invention relates to a kind of DTV STB, relate in particular to the method that a kind of STB is realized low power consumption and true standby function.
[background technology]
After traditional DTV STB standby, whole standby program is in DDR, to move, and the clock frequency of CPU does not change yet; And its most peripheral circuit is still in work; How many power consumptions do not have to descend basically, and are serious to the consumption of the energy after the therefore long-time standby, especially today energy crisis rise from all around; Society advocates under the overall situation of energy-saving and emission-reduction, and the user is increasing to having the STB demand that possesses true stand-by energy-saving environment-friendly type.
[summary of the invention]
The technical problem that the present invention will solve, the method that is to provide a kind of STB to realize low power consumption and true standby function, the control of power consumption can descend power consumption STB when standby through to standby the time, greatly reduces the consumption of the energy, to realize environmental protection.
The present invention is achieved in that a kind of method of STB realization low power consumption and true standby function; The related standby program of this method is operation among the cache (cache memory) in set-top box CPU, the power consumption control when realizing set-top box standby through this cache.
Power consumption control when said standby program is also closed the further realization of most peripheral circuit to set-top box standby through the clock frequency of reduction CPU and according to certain sequencing.
Said standby program comprises entering standby program step, operation standby program step and withdraws from the holding state step.
Said entering standby program step comprises:
Step 11, when the STB program is normally moved, whether the main program supervisory user is the standby command input, this standby command input comprises treats the switch input on power key or the panel of remote controller, if the standby command input is arranged, then STB gets into standby mode;
Step 12, main program be audio frequency and video module, demultiplexing module, the OSD display module of closure plane top box one by one, and all GPIO output;
Step 13, main program begin the cache of CPU is configured, and copy the standby program among the cache to simultaneously, and jump to the standby program that begins among the cache to carry out among the cache, give the standby that in cache, moves program the control of CPU.
Said operation standby program step comprises:
Step 21, STB enter into cache operation standby program, and the power supply of tuner is then cut off in the operation of standby stop SDRAM or DDR-SDRAM and power supply, closes the tuner controller module simultaneously, cuts off the power supply that panel shows again;
Step 22, the clock frequency of regulating CPU are reduced to the lower frequency that set-top-box chip allows with the clock frequency of CPU;
Step 23, begin to wait for and receive the input that the user finishes standby command, comprise and treat the switch input on power key or the panel of remote controller,, then withdraw from holding state if the input that finishes standby command is arranged.
The said holding state step that withdraws from comprises:
Step 31, at first recover power supply, simultaneously it is reconfigured, make it can operate as normal SDRAM or DDR-SDRAM;
Step 32, then recover power supply, simultaneously tuner is reconfigured startup tuner;
Step 33, start the power supply that panel shows then;
Step 34, restart audio frequency and video module and demultiplexing module;
Step 35, open the output function of all GPIO;
Step 36, adjust to original frequency to the clock frequency of CPU at last;
Step 37, be loaded into main program SDRAM or the DDR-SDRAM from flash again, and jump to SDRAM or DDR-SDRAM goes up the operation main program, return main program to the control of CPU;
Step 38, finish the standby process, get into normal running state of programs with regard to this STB.
The present invention has following advantage: utilize the cache of set-top box CPU to carry out the operation of standby program, get into standby mode after, the clock frequency of regulating CPU; Be reduced to the lower frequency that chip allows; Close relevant power consumption parts when the standby through peripheral circuit, realized when standby the control of power consumption, making it when standby the best can drop to about 10% of mode of operation at ordinary times with power consumption; Greatly reduce the consumption of the energy, really realize environmental protection.Thereby the merit power consumption is big when having solved traditional DTV STB standby, can't realize the problem of purpose of energy saving.
[description of drawings]
Combine embodiment that the present invention is further described with reference to the accompanying drawings.
Fig. 1 is the structured flowchart of the STB of realization the inventive method
Fig. 2 is that the power-supply controller of electric principle among Fig. 1 connects block diagram.
Fig. 3 is the FB(flow block) that STB gets into the standby program in the inventive method.
Fig. 4 is the FB(flow block) of STB operation standby program in the inventive method.
Fig. 5 withdraws from the FB(flow block) of holding state for STB in the inventive method.
[embodiment]
See also shown in Figure 1; Existing STB generally includes master chip; And the flash memory that is connected with this master chip, random asccess memory, tuner, audio and video output interface, Electrically Erasable Read Only Memory, smart card, remote controller interface, and LED panel.STB master chip inside has a small-sized Cache (cache memory) usually, and the related standby program of the inventive method is in the cache of set-top box CPU, to move, the power consumption control when realizing set-top box standby through this cache; And through reducing the clock frequency of CPU, and close the power consumption control of most peripheral circuit when further realizing to set-top box standby according to certain sequencing.
See also illustrated in figures 1 and 2; For realizing the inventive method; Design one power-supply controller of electric in STB, this power-supply controller of electric comprises the power control circuit of power control circuit, a SDRAM or the DDR-SDRAM of a Tuner, and the power control circuit of panel demonstration.The power control circuit of the power control circuit of this Tuner, SDRAM or DDR-SDRAM, and the power control circuit that panel shows is custom circuit.The power control circuit of said Tuner is connected with said master chip and tuner respectively, in order to the power supply input of control tuner; The power control circuit of said SDRAM or DDR-SDRAM is connected with said master chip and random asccess memory respectively, in order to the power supply input of control SDRAM or DDR-SDRAM; The power control circuit that said panel shows is connected with said master chip and LED panel respectively, in order to the power supply input of control LED panel.
The related standby program of the inventive method comprises entering standby program step, operation standby program step and withdraws from the holding state step.Based on above-mentioned hardware foundation, the inventive method can be undertaken by following step:
As shown in Figure 3, said entering standby program step comprises:
Step 11, when the STB program is normally moved, whether the main program supervisory user is the standby command input, this standby command input comprises treats the switch input on power key or the panel of remote controller, if the standby command input is arranged, then STB gets into standby mode;
Step 12, main program be audio frequency and video module, demultiplexing module, the OSD display module of closure plane top box one by one, and all GPIO output;
Step 13, main program begin the cache of CPU is configured, and copy the standby program among the cache to simultaneously, and jump to the standby program that begins among the cache to carry out among the cache, give the standby that in cache, moves program the control of CPU.
As shown in Figure 4, said operation standby program step comprises:
Step 21, STB enter into cache operation standby program, and the power supply of tuner is then cut off in the operation of standby stop SDRAM or DDR-SDRAM and power supply, closes the tuner controller module simultaneously, cuts off the power supply that panel shows again;
Step 22, the clock frequency of regulating CPU are reduced to the lower frequency that set-top-box chip allows with the clock frequency of CPU;
Step 23, begin to wait for and receive the input that the user finishes standby command, comprise and treat the switch input on power key or the panel of remote controller,, then withdraw from holding state if the input that finishes standby command is arranged.
As shown in Figure 5, the said holding state step that withdraws from comprises:
Step 31, at first recover power supply, simultaneously it is reconfigured, make it can operate as normal SDRAM or DDR-SDRAM;
Step 32, then recover power supply, simultaneously tuner is reconfigured startup tuner;
Step 33, start the power supply that panel shows then;
Step 34, restart audio frequency and video module and demultiplexing module;
Step 35, open the output function of all GPIO;
Step 36, adjust to original frequency to the clock frequency of CPU at last;
Step 37, be loaded into main program SDRAM or the DDR-SDRAM from flash again, and jump to SDRAM or DDR-SDRAM goes up the operation main program, return main program to the control of CPU;
Step 38, finish the standby process, get into normal running state of programs with regard to this STB.
In sum; The inventive method is mainly utilized subsidiary some characteristics of cache of CPU of STB; And control power-supply controller of electric through master chip and close most peripheral circuit according to certain sequencing; Power consumption control when realizing set-top box standby reaches and realizes the green energy conservation low power consumption and true standby function.

Claims (1)

1. a STB is realized low-power consumption and is had the method for true idle function, and it is characterized in that: the related standby program of this method is in the cache of set-top box CPU, to move, the power consumption control when realizing set-top box standby through this cache; Power consumption control when said standby program is also closed the further realization of most peripheral circuit to set-top box standby through the clock frequency of reduction CPU and according to sequencing; Said most peripheral circuit comprises the power supply circuits that power supply, tuner controller module and the panel of operation and power supply circuits, the tuner of SDRAM or DDR-SDRAM show;
Said standby program comprises entering standby program step, operation standby program step and withdraws from the holding state step;
Said entering standby program step comprises:
Step 11, when the STB program is normally moved, whether the main program supervisory user is the standby command input, this standby command input comprises treats the switch input on power key or the panel of remote controller, if the standby command input is arranged, then STB gets into standby mode;
Step 12, main program be audio frequency and video module, demultiplexing module, the OSD display module of closure plane top box one by one, and all GPIO output;
Step 13, main program begin the cache of CPU is configured, and copy the standby program among the cache to simultaneously, and jump to the standby program that begins among the cache to carry out among the cache, give the standby that in cache, moves program the control of CPU;
Said operation standby program step comprises:
Step 21, STB enter into cache operation standby program, and the power supply of tuner is then cut off in the operation of standby stop SDRAM or DDR-SDRAM and power supply, closes the tuner controller module simultaneously, cuts off the power supply that panel shows again;
Step 22, the clock frequency of regulating CPU are reduced to the lower frequency that set-top-box chip allows with the clock frequency of CPU;
Step 23, begin to wait for and receive the input that the user finishes standby command, comprise and treat the switch input on power key or the panel of remote controller,, then withdraw from holding state if the input that finishes standby command is arranged;
The said holding state step that withdraws from comprises:
Step 31, at first recover power supply, simultaneously it is reconfigured, make it can operate as normal SDRAM or DDR-SDRAM;
Step 32, then recover power supply, simultaneously tuner is reconfigured startup tuner;
Step 33, start the power supply that panel shows then;
Step 34, restart audio frequency and video module and demultiplexing module;
Step 35, open the output function of all GPIO;
Step 36, adjust to original frequency to the clock frequency of CPU at last;
Step 37, be loaded into main program SDRAM or the DDR-SDRAM from flash again, and jump to SDRAM or DDR-SDRAM goes up the operation main program, return main program to the control of CPU;
Step 38, finish the standby process, get into normal running state of programs with regard to this STB.
CN2009101128482A 2009-11-25 2009-11-25 Method for realizing low power consumption and true standby function of set-top box Expired - Fee Related CN101715045B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103024543A (en) * 2012-12-21 2013-04-03 青岛海信宽带多媒体技术有限公司 Implementation method and implementation device for low power consumption of set top box

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CN102752648A (en) * 2011-04-18 2012-10-24 鸿富锦精密工业(深圳)有限公司 Set top box and power-saving method thereof
CN104503856B (en) * 2014-12-02 2019-06-14 青岛海信宽带多媒体技术有限公司 A kind of control method and device of embedded system
CN106331819A (en) * 2015-06-16 2017-01-11 中兴通讯股份有限公司 Set-top box operation method, set-top box client device and set-top box
CN105338392B (en) * 2015-10-16 2018-06-01 中国科学院上海高等研究院 The intelligent power saving method and system of wire network devices
CN105611409B (en) 2016-01-04 2019-12-27 京东方科技集团股份有限公司 Advertising machine control system and control method thereof and advertising machine
CN106331864B (en) * 2016-09-06 2019-05-07 深圳创维数字技术有限公司 A kind of set-top box forces standby method and device
CN112804588A (en) * 2020-12-31 2021-05-14 湖南国科微电子股份有限公司 Set top box operation method, device, equipment and medium

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103024543A (en) * 2012-12-21 2013-04-03 青岛海信宽带多媒体技术有限公司 Implementation method and implementation device for low power consumption of set top box

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