CN107426618A - Intelligent television and its under-voltage protection fault-tolerance approach - Google Patents
Intelligent television and its under-voltage protection fault-tolerance approach Download PDFInfo
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- CN107426618A CN107426618A CN201710432051.5A CN201710432051A CN107426618A CN 107426618 A CN107426618 A CN 107426618A CN 201710432051 A CN201710432051 A CN 201710432051A CN 107426618 A CN107426618 A CN 107426618A
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- power supply
- intelligent television
- primary processor
- voltage
- storage device
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- 230000004224 protection Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 26
- 230000008569 process Effects 0.000 claims abstract description 23
- 230000004044 response Effects 0.000 claims abstract description 12
- 230000005611 electricity Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 25
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
- H04N21/4436—Power management, e.g. shutting down unused components of the receiver
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/4424—Monitoring of the internal components or processes of the client device, e.g. CPU or memory load, processing speed, timer, counter or percentage of the hard disk space used
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4623—Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/63—Generation or supply of power specially adapted for television receivers
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- General Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Sources (AREA)
- Television Receiver Circuits (AREA)
Abstract
A kind of intelligent television and its under-voltage protection fault-tolerance approach, the intelligent television include：Power supply, by the primary processor of supply power supply power supply, storage device and system is resetted, and voltage detecting circuit, whether the supply voltage for detecting the storage device, which reduces and trigger, controls the storage device to be stopped；In start process, the primary processor closes the response of the signal provided the voltage detecting circuit before operation main program operation；The primary processor opens the response of the signal provided the voltage detecting circuit after operation main program operation.The present invention can be efficiently solved in start process, deadlock state caused by powered-off fault, so as to improve Consumer's Experience.
Description
Technical field
The present invention relates to intelligent television, more particularly to a kind of intelligent television with EMMC.
Background technology
The development of intelligent television at present, all there is EMMC (Embedded Multi Media in many intelligent televisions
Card, embedded multi-media card), EMMC is used for storing the program code and other data of the host CPU operation of intelligent television,
Data in EMMC are most important for the normal operation of intelligent television, and therefore, many intelligent televisions employ power down to EMMC
Protection mechanism, when there is power down in intelligent television, control EMMC be stopped, will not be altered with the data ensured in EMMC or
Person damages.
As shown in figure 1, be the EMMC power down protection block diagrams of prior art, including power supply, motherboard power supply converting system,
Detect circuit, memory system, SOC (on-chip system), EMMC systems and RESET systems (reset system).
Fig. 2 is a kind of block diagram of Fig. 1 power supply, including current rectifying and wave filtering circuit, pfc circuit, LLC resonance circuits,
One transformer, the first feedback circuit, circuit of reversed excitation, the second transformer, the second feedback circuit.
As shown in figure 3, being a kind of existing detection circuit applied to EMMC under-voltage protection mechanism, 12V voltages pass through resistance
R104, R113 and R123 are grounded, and detection signal Power_Detect is the detection signal of SOC host CPU, and the detection signal is
The voltage at resistance R123 both ends, the level of detection signal is 1V during power supply normal power supply.Because electric capacity be present in power panel and mainboard,
When alternating current 220V powers off, the 12V of output can't be reduced immediately, but gradually be reduced, when 12V is power-down to 10V, detection letter
Number Power_Detect drops to 0.8V from 1V, i.e., can trigger the power down protection to EMMC.
Power down protection can trigger before SOC host CPUs are stopped, and now host CPU still can maintain a period of time just
Often work, during this section, host CPU can preserve to the data in EMMC, and control EMMC to be stopped, to ensure EMMC
In data will not be altered or damage.
If the alternating current of input continues to reduce, intelligent television shutdown, SOC CPU is stopped；If simply moment
Power down, AC power is recovered normally again before CPU is stopped, then intelligent television is now reconciled still in power down protection state
The hardware circuits such as device, Video Decoder, audio D/A converter still can work, that is to say, that can be drawn with normal play video
Face and sound, but input equipment, for example, button, remote control then cannot respond to, show as deadlock state because, host CPU need from
EMMC is read after next needing code to be run and related data, could perform associative operation, such as read input equipment
Information is inputted, EMMC, which is stopped, will cause CPU can not also continue to run with.
As shown in figure 4, be the partial block diagram of typical intelligent television, including host CPU, demodulator, Video Decoder, audio
D/A converter, input equipment and EMMC.During normal work, host CPU is used for the dependent instruction inputted according to input equipment, to solution
Device, Video Decoder and audio D/A converter is adjusted to be controlled, when demodulator, Video Decoder and audio D/A converter work
Afterwards, it is not necessary to which obtaining the instruction of host CPU again can work, therefore now whether CPU runs and do not influence the normal of these hardware
Operation.
It can be seen that existing intelligent television is normal mode for the EMMC power down protection patterns taken, do not consider certainly
The situation of main recovery.After power supply power-fail triggering, system enters guard mode, just independently can not be resetted and be opened
It is dynamic；In addition, in the case of user's artificial fast operating, it also can contingently enter guard mode；Especially family's power down and idol
Voltage Drop caused by sending out surge.These bring harmful effect to Consumer's Experience.
The content of the invention
The technical problem to be solved in the present invention is to overcome above-mentioned the shortcomings of the prior art, and proposes a kind of intelligence electricity
Depending on that can efficiently solve in start process, deadlock state caused by powered-off fault, so as to improve Consumer's Experience.
The technical scheme that the present invention proposes for above-mentioned technical problem includes, and proposes a kind of intelligent television, including：Power supply
Power supply, by the primary processor of supply power supply power supply, storage device and system is resetted, and voltage detecting circuit, for detecting
Whether the supply voltage of the storage device, which reduces and trigger, controls the storage device to be stopped；In start process, the main process task
Device closes the response of the signal provided the voltage detecting circuit before operation main program operation；The primary processor is being run
After main program operation, the response of the signal provided the voltage detecting circuit is opened.
The technical scheme that the present invention proposes for above-mentioned technical problem also includes, and proposes a kind of under-voltage guarantor of intelligent television
Fault-tolerance approach is protected, in start process, primary processor closes the power supply electricity to detecting storage device before operation main program operation
The response of pressure；Primary processor opens the response of the supply voltage to detecting storage device after operation main program operation.
Compared with prior art, the present invention does not protect by the way that in start process, closing is under-voltage, can efficiently solve out
During machine, deadlock state caused by powered-off fault, so as to improve Consumer's Experience.
Brief description of the drawings
The system that Fig. 1 illustrates a kind of existing intelligent television under-voltage protection EMMC.
Fig. 2 illustrates a kind of power-supply system of existing intelligent television.
Fig. 3 illustrates a kind of detection circuit of the EMMC supply voltages of existing intelligent television.
The system that Fig. 4 illustrates a kind of existing intelligent television.
The system that Fig. 5 illustrates intelligent television of the present invention.
Fig. 6 illustrates the program operation process in a kind of existing start process.
Fig. 7 illustrates the program operation process in the start process of the present invention.
Fig. 8 illustrates a kind of existing detection circuit.
Fig. 9 illustrates the detection circuit of the present invention.
Figure 10 illustrates the EMMC memory spaces distribution of the present invention.
Wherein, Main Reference Numerals are described as follows：The motherboard power supply converting system of 100 intelligent television, 101 power supply 104
The storage device 108RESET systems 109 of 105 internal memory 106SOC 107 detect circuit.
Embodiment
Below in conjunction with accompanying drawing, give the present invention further elaboration.
Referring to Fig. 5, system that Fig. 5 illustrates intelligent television of the present invention.The present invention proposes a kind of intelligent television 100, and it is wrapped
Include：Power supply 101, motherboard power supply converting system 104, internal memory 105, SOC 106, storage device 107, RESET (reset system
System) 108 and detection circuit 109.Wherein, confession is detected by detecting the detection signal of the offer of circuit 109 with SOC 106 cooperation
Whether electric network recovers, and provides user and be intended to touching needed for the unstable anticipation of direct power down shutdown or user power utilization environment
Signal.
Referring to Fig. 6, Fig. 6 illustrates the program operation process in a kind of existing start process.It can be seen that in system electrification
After 301, the running of program is successively on SOC 106：303rd, ROM is run on SOC pieces；305th, EMMC is detected
(detect)；307th, main program is run.
That is, according to this program operation process, on intelligent television 100 after electricity, SOC 106 can be run first
ROM programs on piece are run, the critical function of the part is the state for configuring whole IO, including the IO's for obtaining EMMC detections
State, when voltage less than setting value (such as：When 0.8V), system receives the interrupt signal that the IO of EMMC detections is provided, SOC
106 can send out guarded command to EMMC automatically, realize in the case of abnormal power-down, protection EMMC data are without damage.IO is configured
After the completion of, SOC 106 just can be from EMMC reading programs；Then, BOOT programs and main program are continued to run with.
The running of program, is present in start process on this SOC 106, is not started shooting caused by abnormity of power supply power down
Problem.By analyzing the reason for producing the problem, it is known that：In instant power-down, there is voltage detecting protection in EMMC_DETECT, such as
Fruit power supply before kernel is stopped recovers normally again, then complete machine is still in power down protection state, image, the hardware path of sound
It will not change, still can be with normal play, but button, remote control will not respond, so as to show as deadlock state.Consequently, it is possible to
When 12V stablizes again, system enter can not recoil state, equivalent to entering latch mode.
Referring to Fig. 7, Fig. 7 illustrates the program operation process in the start process of the present invention.It can be seen that in system electrification 301
Afterwards, the running of program is successively on SOC 106：303rd, ROM is run on SOC pieces；309th, BOOT is run；307th, main program
Operation；305th, EMMC is detected.
That is, on software, EMMC detections are moved to after whole system runs completely, when ROM on piece is run,
Software completely closes the EMMC IO detected, and system is not responding to any signal that the IO of EMMC detections is provided；Run etc. program
(namely after BOOT and main program have been run) afterwards, then the I/O port of open EMMC detections, the IO of response EMMC detections are provided
Interrupt signal.
It is understood that by this ingenious change of the running of program on SOC 106, in start process just
Under-voltage protection will not be triggered, so as to efficiently solve in start process, deadlock state caused by powered-off fault.
Referring to Fig. 8, Fig. 8 illustrates a kind of existing detection circuit.It can be seen that the detection circuit and detection circuit shown in Fig. 3
It is essentially identical, it is to be realized using divider resistance, and partial pressure ratio is identical, difference part is, the resistance of divider resistance
The relatively original small an order of magnitude of value.
Referring to Fig. 9, Fig. 9 illustrates the detection circuit of the present invention.It can be seen that the method for the detection circuit 109 change is by 12V
Pull-up is changed to 5V pull-up, it is contemplated that：After system electrification, 5V will not exist at once, can than 12V at night electricity (such as：Several millis
Second), so, pass through the delay of this period, it is possible to ensure the completion that I/O port configures in ROM, software can be passed through
The response time of trigger protection by EMMC detections, it is deferred to and efficiently accomplishes in ROM after I/O port setup time, so as to evade out
Machine deadlock risk.
Consider：It is changed to after the under-voltage detection mode do not protected, a kind of risk can be brought：Exception in start process is fallen
Electricity, EMMMC programs loss is likely to result in, the problem of so as to cause forever to cannot be started up.In order to evade this risk, Ke Yitong
Tackled after getting out stand-by program in advance.
Referring to Figure 10, Figure 10 illustrates the EMMC memory spaces distribution of the present invention.EMMC (i.e. storage device 107) storage
Space 600 needs increased, and in addition to the EMMC control sections 601 of original and program part 603, must individually open up one again
Part 605, the space size of the part 605 is suitable with the space size of program part 603, and stand-by program is stored in into the portion
Divide 605.This part 605 is independent, only can just go to access under given conditions.The space relative closure of this part 605, is advantageous to
Reduce the risk of damage.
The intelligent television 100 of the present invention, on the one hand can realize the EMMC power down protections in system normal course of operation；Separately
On the one hand order is run by changing SOC 106 program, EMMC detections 305 is closed before main program operation 307, and change
Circuit 109 is detected, changes and is detected using the 5V to lagging behind 12V, to ensure that ROM operations 303 will not be influenceed by power down, energy
It is enough efficiently against start process due to EMMC carries out power down protection and can not spontaneous startup the problem of, substantially improve user
Experience.
It is noted that in the above-described embodiments, intelligent television 100 is the product without power switch.Other one
In a little embodiments, according to the needs of practical application, intelligent television 100 can be the product of power switch.
The above, only presently preferred embodiments of the present invention, are not intended to limit embodiment of the present invention, and this area is general
Lead to central scope and spirit of the technical staff according to the present invention, can very easily carry out corresponding flexible or modification, therefore originally
The protection domain of invention should be defined by the protection domain required by claims.
Claims (10)
1. a kind of intelligent television, including：Power supply, by the primary processor of supply power supply power supply, storage device and reset system
System, and voltage detecting circuit, whether the supply voltage for detecting the storage device, which reduces and trigger, controls the storage device
It is stopped；Characterized in that, in start process, the primary processor is closed and the voltage is examined before operation main program operation
The response for the signal that slowdown monitoring circuit provides；The primary processor is opened and the voltage detecting circuit is carried after operation main program operation
The response of the signal of confession.
2. according to the intelligent television described in claim 1, it is characterised in that the primary processor before operation main program operation,
Close the I/O port that the signal provided with the voltage detecting circuit is engaged；The primary processor is opened after operation main program operation
Open the I/O port that the signal provided with the voltage detecting circuit is engaged.
3. according to the intelligent television described in claim 2, it is characterised in that the primary processor is before main program is run, operation
ROM programs, close the I/O port that the signal provided with the voltage detecting circuit is engaged and betide during running ROM programs.
4. according to the intelligent television described in claim 3, it is characterised in that the power supply provides the first power supply and lags behind this
The second source of first power supply, the pressure value of the second source are less than first power supply, and the voltage detecting circuit is to second electricity
Detected in source.
5. according to the intelligent television described in claim 4, it is characterised in that when the second source lags behind first power settings
Long, the setting duration is enough to ensure that the primary processor runs ROM programs.
6. according to the intelligent television described in claim 1, it is characterised in that preserve the master of the primary processor in the storage device
Program, and the backup of the main program, the memory space of the backup is relative closure.
7. according to the intelligent television described in any one of claim 1 to 6, it is characterised in that the storage device is embedded more matchmakers
Body card；The intelligent television includes on-chip system, and the primary processor is located at the on-chip system.
8. the under-voltage protection fault-tolerance approach of a kind of intelligent television, it is characterised in that in start process, primary processor is running main journey
Before sort run, the response of the supply voltage to detecting storage device is closed；Primary processor is opened after operation main program operation
Open the response of the supply voltage to detecting storage device.
9. according to the method described in claim 8, it is characterised in that primary processor runs ROM journeys before main program is run
Sequence, close the I/O port being engaged with detecting the supply voltage of storage device and betide during running ROM programs.
10. according to the method described in claim 8, it is characterised in that make intelligent television power supply provide the first power supply and
The second source of first power supply is lagged behind, the pressure value of the second source is less than first power supply, detects the power supply of storage device
Voltage is that the second source is detected.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710061744 | 2017-01-26 | ||
| CN2017100617448 | 2017-01-26 |
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| Publication Number | Publication Date |
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| CN107426618A true CN107426618A (en) | 2017-12-01 |
| CN107426618B CN107426618B (en) | 2019-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710431934.4A Active CN107197380B (en) | 2017-01-26 | 2017-06-09 | Intelligent television and undervoltage protection fault-tolerant method thereof |
| CN201710431932.5A Active CN107426617B (en) | 2017-01-26 | 2017-06-09 | Intelligent television and undervoltage protection fault-tolerant method thereof |
| CN201710432053.4A Active CN107426619B (en) | 2017-01-26 | 2017-06-09 | Intelligent television and undervoltage protection fault-tolerant method thereof |
| CN201710432051.5A Active CN107426618B (en) | 2017-01-26 | 2017-06-09 | Smart television and its under-voltage protection fault-tolerance approach |
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| CN201710431934.4A Active CN107197380B (en) | 2017-01-26 | 2017-06-09 | Intelligent television and undervoltage protection fault-tolerant method thereof |
| CN201710431932.5A Active CN107426617B (en) | 2017-01-26 | 2017-06-09 | Intelligent television and undervoltage protection fault-tolerant method thereof |
| CN201710432053.4A Active CN107426619B (en) | 2017-01-26 | 2017-06-09 | Intelligent television and undervoltage protection fault-tolerant method thereof |
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| CN108270200A (en) * | 2018-01-18 | 2018-07-10 | 深圳创维－Rgb电子有限公司 | A kind of Voltage Drop protection circuit, backlight drive power supply and television set |
| US10855093B2 (en) * | 2018-07-25 | 2020-12-01 | Lear Corporation | Apparatus and method for monitoring batteries and storing data based on battery status |
| CN109274065B (en) * | 2018-11-23 | 2020-06-02 | 深圳市道通智能航空技术有限公司 | Monitoring circuit, battery and aircraft |
| CN113464481A (en) * | 2021-08-23 | 2021-10-01 | 小熊电器股份有限公司 | Desktop fan, and power-off protection control method and device for desktop fan |
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| CN106095042A (en) * | 2016-06-06 | 2016-11-09 | 乐视控股（北京）有限公司 | Protection device and electronic equipment for electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107426617B (en) | 2020-03-06 |
| CN107197380A (en) | 2017-09-22 |
| CN107426619B (en) | 2019-12-06 |
| CN107426618B (en) | 2019-11-29 |
| CN107426617A (en) | 2017-12-01 |
| CN107197380B (en) | 2019-12-06 |
| CN107426619A (en) | 2017-12-01 |
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Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee after: Hisense Visual Technology Co., Ltd. Address before: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |