CN107197380A - 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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- CN107197380A CN107197380A CN201710431934.4A CN201710431934A CN107197380A CN 107197380 A CN107197380 A CN 107197380A CN 201710431934 A CN201710431934 A CN 201710431934A CN 107197380 A CN107197380 A CN 107197380A
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- 230000004224 protection Effects 0.000 title claims abstract description 30
- 238000003860 storage Methods 0.000 claims abstract description 151
- 238000001514 detection method Methods 0.000 claims abstract description 38
- 230000005611 electricity Effects 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 description 32
- 230000007246 mechanism Effects 0.000 description 14
- 101100112673 Rattus norvegicus Ccnd2 gene Proteins 0.000 description 11
- 230000008859 change Effects 0.000 description 8
- 230000002045 lasting effect Effects 0.000 description 6
- 230000002269 spontaneous effect Effects 0.000 description 6
- 238000005070 sampling Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000035945 sensitivity 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
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- 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
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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
- H04N21/45—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
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- 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, the primary processor powered by the supply power supply, storage device and reset system, and voltage detecting circuit, control the storage device to be stopped for detecting whether the supply voltage of the storage device reduces and trigger；Also include：Voltage comparison unit, for being controlled in triggering after the storage device is stopped, judge the supply voltage whether be increased to triggering control the storage device be stopped between voltage；And decision package, at least trigger signal that detection signal and the voltage comparison unit for being provided according to the voltage detecting circuit are provided, to decide whether to control the storage device to rework.The present invention can independently recover, so as to improve Consumer's Experience after power down protection pattern is entered.
Description
Technical field
The present invention relates to intelligent television, more particularly to a kind of intelligent television with EMMC.
Background technology
All there is EMMC (Embedded Multi Media in the development of current intelligent television, 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 normally 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, the detection signal for the host CPU that detection signal Power_Detect is SOC, and the detection signal is
The voltage at resistance R123 two ends, the level that signal is detected during power supply normal power supply is 1V.Because there is electric capacity in power panel and mainboard,
When alternating current 220V is powered 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 be triggered before SOC host CPUs are stopped, and now host CPU still can maintain a period of time just
During often work, this section, host CPU can be preserved 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, such as button, remote control then cannot respond to, and show as deadlock state because, host CPU need from
EMMC reads and next needed after code to be run and related data, could perform associative operation, for example, 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 the work of demodulator, Video Decoder and audio D/A converter
Afterwards, it is not necessary to which obtaining the instruction of host CPU again can work, therefore now whether CPU, which runs, does 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, and is not considered certainly
The situation of main recovery.Once after power supply power-fail triggering, system enters guard mode, just can not be autonomous resetted and opened
It is dynamic；In addition, in the case of user's artificial fast operating, also can contingently enter guard mode；Especially family's power down and idol
Send out Voltage Drop caused by 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 the shortcomings of that above-mentioned prior art is present, and proposes a kind of intelligence electricity
Depending on after power down protection pattern is entered, can independently recover, so as to improve Consumer's Experience.
The technical scheme that the present invention is proposed for above-mentioned technical problem includes, and proposes a kind of intelligent television, including：Power supply
Power supply, the primary processor powered by the supply power supply, storage device and reset system, 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；Also include：Voltage comparison unit,
After controlling the storage device to be stopped in triggering, judge whether the supply voltage is increased to triggering and controls the storage to set
For the voltage between being stopped；And decision package, for the detection signal and the electricity provided according to the voltage detecting circuit
At least trigger signal for pressing comparing unit to provide, to decide whether to control the storage device to rework.
The technical scheme that the present invention is proposed for above-mentioned technical problem also includes, and proposes a kind of under-voltage guarantor of intelligent television
Fault-tolerance approach is protected, including：Detect the supply voltage of storage device；Judge whether the supply voltage reduces and trigger and control the storage
Equipment is stopped, and judges after triggering controls the storage device to be stopped, and whether the supply voltage, which is increased to, is touched
Hair control the storage device be stopped between voltage, if so, then controlling the storage device to rework.
Compared with prior art, it is of the invention to stop work by judging whether supply voltage reduces and trigger control storage device
Make, and judge after triggering control storage device is stopped, whether supply voltage is increased to the triggering control storage
Equipment be stopped before voltage, if so, then control the storage device to rework, enter power down protection pattern it
Afterwards, can independently it recover, 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 first embodiment of the present invention.
Fig. 6 illustrates the autonomous restoration methods that first embodiment is used.
Fig. 7 illustrates the voltage comparator circuit that first embodiment is used.
Fig. 8 illustrates the under-voltage situation of the supply voltage that first embodiment is faced.
Fig. 9 illustrates that the situation of disturbing pulse occurs in supply voltage under the normal shutdown that first embodiment is faced.
Figure 10 illustrates a kind of current comparison circuit that first embodiment is used.
Figure 11 illustrates the current detecting part for another current comparison circuit that first embodiment is used.
Figure 12 illustrates the voltage rating unit for another current comparison circuit that first embodiment is used.
Figure 13 illustrates the decision circuit that first embodiment is used.
Figure 14 illustrates a kind of SOC and storage device that first embodiment used.
Figure 15 illustrates clock circuit and IO in the decision-making electrical level and storage device controller that first embodiment is used
The matching relationship of interface circuit.
Figure 16 illustrates another SOC and storage device that first embodiment used.
Figure 17 illustrates the operation principle of the autonomous protection mechanism for recovering function of the tool of first embodiment.
The system that Figure 18 illustrates intelligent television second embodiment of the present invention.
Figure 19 illustrates the decision circuit that second embodiment is used.
Figure 20 illustrates the operation principle of the autonomous protection mechanism for recovering function of the tool of second embodiment.
Wherein, Main Reference Numerals are described as follows：100th, the voltage ratio of 101 power supply of 100a intelligent televisions 102 compared with
103 electric currents compare the RESET systems 109 of 104 motherboard power supply converting system, 105 internal memory, 106 SOC, 107 storage devices 108
Detect circuit 110,110a decision circuits.
Embodiment
Below in conjunction with accompanying drawing, give the present invention further elaboration.
Referring to Fig. 5, the system that Fig. 5 illustrates intelligent television first embodiment of the present invention.The present invention proposes a kind of intelligence electricity
Depending on 100, it includes：Power supply 101, voltage ratio is compared with 102, and electric current compares 103, motherboard power supply converting system 104, internal memory 105,
SOC106, storage device 107, RESET (reset system) 108, detection circuit 109 and decision circuit 110.
Power supply 101 provides 12V supplies.Voltage ratio is monitored compared with the 12V that 102 pairs of power supplies 101 are provided.Electric current
The electric current supply for comparing the 12V that 103 pairs of power supplies 101 are provided is monitored.Motherboard power supply converting system 104 is by power supply
Various voltages supply needed for the 101 12V conversion mainboard normal works provided, so as to internal memory 105, SOC106 on mainboard, deposit
Store up equipment 107 and RESET systems 108 being capable of normal work.Detect whether power down is monitored circuit 109 to power supply 101,
And detection signal is supplied to SOC106 in time.Signal VD, the electric current that decision circuit 110 is provided according to voltage ratio compared with 102 compare
The detection signal that the 103 signal Vef provided and detection circuit 109 are provided, generates decision-making electrical level, and then control RESET systems
108 action.
Referring to Fig. 6, Fig. 6 illustrates the autonomous restoration methods that first embodiment is used.The present invention proposes a kind of intelligence electricity
Depending on the autonomous method for recovering storage device work, comprise the following steps.
S100, the supply voltage for detecting storage device.
Storage device designated herein can be EMMC, Flash flash memory etc..
Supply voltage designated herein, can be the voltage or the voltage of the power input port of storage device
Preceding step voltage.Illustrated below in conjunction with Fig. 2, Fig. 3 and Fig. 5.The voltage of storage device EMMC power input port is main
The voltage of plate power conversion system output, and the voltage that it can be the output of motherboard power supply converting system that EMMC supply voltage, which is,；
Can also be motherboard power supply converting system output voltage preceding step voltage, that is, power supply output 12V；It can also be
The output voltage of circuit of reversed excitation, pfc circuit or current rectifying and wave filtering circuit.
It is noted that detection signal Power_Detect be although by resistance R123, R113, R104, R105 and
The circuit that R118 is constituted is obtained, because supply voltage 12V change can cause detection signal Power_Detect change, because
This, it is possible to understand that：It is substantially also the detection to supply voltage to obtain detection signal Power_Detect.
S110, judge whether the supply voltage reduces and trigger the control storage device and be stopped, and judge
After the triggering control storage device is stopped, whether the supply voltage is increased to the triggering control storage device
Voltage before being stopped, if so, then controlling the storage device to rework.
After storage device is reworked, host CPU can from storage device program code read and related data so that
It can continue to run with.
Referring to Fig. 3, during supply voltage 12V is reduced to 10V, detection signal Power_Detect is dropped to from 1V
0.8V, then trigger the control storage device and be stopped.
In order to judge after the triggering control storage device is stopped, whether the supply voltage is increased to triggering
Control the storage device be stopped before voltage, referring to Fig. 5, in the present embodiment, add voltage ratio compared with 102.Examine
Consider：Only there is above-mentioned voltage ratio compared with (circuit) 102, misrecognition is being likely to occur in some cases, in order to further confirm that
Whether supply voltage recovers to voltage during normal work, also add electric current and compares 103.
Referring to Fig. 7, Fig. 7 illustrates the voltage comparator circuit that first embodiment is used.Specifically, it may be determined that power supply
Sizes of the voltage Vin1 in normal work：With reference to supply voltage Vref1 (such as 12V), supply voltage Vin1 is supplied with reference
Piezoelectric voltage Vref1 is used as the two of voltage comparator (or other voltage comparator circuits of such as OVP under-voltage protecting circuits etc)
Individual input, output voltage comparative result VD.When supply voltage Vin1 is more than with reference to supply voltage Vref1, a voltage ratio is exported
Compared with result VD；When supply voltage Vin1 is less than with reference to supply voltage Vref1, another voltage comparative result VD is exported.
After the triggering control storage device is stopped, supply voltage is referred to when supply voltage Vin1 is more than
Vref1, then show that supply voltage recovers rise, can be determined according to voltage comparative result VD；When supply voltage Vin1 still less than
With reference to supply voltage Vref1, then show supply voltage complete power down (such as 0V), can also be according to voltage comparative result VD
It is determined that.
Referring to Fig. 8, Fig. 8 illustrates the under-voltage situation of the supply voltage that first embodiment is faced.At T1 moment, power supply electricity
There is moment decline in pressure Vin, and decreases below rotection thresholds (setting voltage threshold) V1, therefore, at T1 moment, supply voltage
Vin decline triggers the control storage device and is stopped.Now, although Vin1 is due to voltage again smaller than Vref1
Comparator is rising edge triggering, therefore, only when T2 moment supply voltages recover to Vref1, and voltage comparator could be defeated
Go out voltage comparative result VD, judge that supply voltage Vin1 recovers to triggering to control the storage device according to comparative result VD
Voltage before being stopped.Therefore, before the T2 moment after the T1 moment, voltage comparator will not export Vin1 and be less than
Vref1 comparative result.
Referring to Fig. 9, Fig. 9 illustrates that the feelings of disturbing pulse occurs in supply voltage under the normal shutdown that first embodiment is faced
Shape.For example, user to intelligent television normal shutdown (refer to shut down using modes such as the switches on remote control or intelligent television,
Mode in addition to directly cutting off the electricity supply and (such as pulling out plug, shut-off master on off)) when, host CPU can initially enter holding state
T3, now host CPU not yet power down, if now an interference rising pulses T4 occurs in power supply again, that is to say, that electricity of now powering
Pressure is to meet to fall before, and then the situation risen occurs again, according to the method for preceding embodiment, and now storage device can be controlled
System restarts work, and host CPU this fashion is in holding state, therefore host CPU reads the data of storage device again, weight
New work, can cause user's shutdown failure, so as to influence Consumer's Experience.
Referring to Fig. 5, electric current, which compares 103, is used to detect whether the associated current of storage device to continue, if then showing user
It is that, in the action booted up, if otherwise showing, user is in the action shut down.
Here associated current refers to that the electric current of circuit system optional position where storage device, associated current is reflected
The running status of machine where storage device, for example：Associated current is not zero during operation, and associated current can be that motherboard power supply turns
Change electric current or circuit of reversed excitation, the electric current of pfc circuit or current rectifying and wave filtering circuit of system.
Electric current, which compares 103, to be lasting when detecting electric current, then be exported an electric current with output current comparative result Vef
Comparative result Vef, according to electric current comparative result Vef may determine that electric current be it is lasting, when detect electric current be it is not lasting,
Another electric current comparative result Vef is then exported, may determine that electric current is not lasting according to electric current comparative result Vef.
Referring to Figure 10, Figure 10 illustrates a kind of current comparison circuit that first embodiment is used.The electric current compares (electricity
Road) 103 employ a voltage comparator and a sampling capacitance to realize.Reference voltage V ref2 (this can be set
Reference voltage can change), if electric current I1 continues, sampling capacitance C1 voltage Vin2 can increase, by a timing
Between after, electric current comparative result Vef can be with the size between reflecting voltage Vin2 and reference voltage V ref2.If voltage Vin2 is more than
Reference voltage V ref2, then it is lasting to illustrate electric current I.
In other embodiment, there is the accumulator of electric capacity for some, upon power-up, accumulator is externally supplied
The electric current answered is to reduce；When shutdown, the electric current that accumulator is externally supplied is then increased.Therefore, it is this kind of by detecting
Accumulator, which externally (is for example sampled and loaded), supplies the growth of size of current, and equally may determine that user is to shut down or opening
Machine.
Referring to Figure 11 and Figure 12, Figure 11 illustrates the electric current inspection for another current comparison circuit that first embodiment is used
Survey part.Figure 12 illustrates the voltage rating unit for another current comparison circuit that first embodiment is used.Accumulator
In storage capacitor C2 and sampling resistor Rs constitute electric current capture, wherein electric current I2 represents the electric current that accumulator is externally supplied,
Flow through sampling resistor Rs electric current.A reference voltage V ref3 (this reference voltage can change) can be set, if
Electric current I2 continues, then sampling capacitance C1 voltage Vin3 can then increase, after some period of time, and electric current comparative result Vef can
With the size between reflecting voltage Vin3 and reference voltage V ref3.If voltage Vin3 is more than reference voltage V ref3, illustrate electricity
Stream I2 is to increase, conversely, then illustrating that electric current I2 does not increase.
Referring to Figure 13, Figure 13 illustrates the decision circuit that first embodiment is used.Decision circuit 110 is real with door using one
It is existing, decision-making electrical level can be obtained according to detection signal Power_Detect, voltage comparative result VD and electric current comparative result Vef.
The logical table of decision circuit 110 is as follows.
| Power_Detect | VD | Vef | Decision-making electrical level |
| 1 | 1 | 1 | 0 |
| 0 | 0 | 0 | 0 |
| 0 | 1 | 1 | 1 |
The logic of decision-making electrical level and detection signal Power_Detect, voltage comparative result VD and electric current comparative result Vef
Relational expression is：Decision-making electrical level=(/Power_Detect) and (VD) and (Vef).
With reference to referring to Fig. 3, during normal work, detection signal Power_Detect is high level 1；When ripple occurs in supply voltage
It is dynamic when dropping to the triggering control storage device and being stopped；Detect that signal Power_Detect is low level 0；When power supply electricity
When pressure is down to 0V completely, detection signal Power_Detect is also low level 0.
With reference to referring to Fig. 5 and Fig. 7, when working properly, voltage comparative result VD is high level 1；It is described in triggering control
After storage device is stopped, supply voltage Vref1 is referred to when supply voltage Vin1 is more than, voltage comparative result VD is high electricity
Flat 1；After the triggering control storage device is stopped, when supply voltage Vin1 is still less than referring to supply voltage Vref1,
Voltage comparative result VD is low level 0.
With reference to referring to Fig. 5 and Figure 10 to Figure 12, when working properly, or it is lasting that supply voltage, which declines still electric current,
In the case of, electric current comparative result Vef is high level 1, and when supply voltage is stopped power supply completely, electric current comparative result Vef is low electricity
Flat 0.
Referring to upper table, when detection signal Power_Detect, voltage comparative result VD and electric current comparative result Vef are high
During level 1, show the normal power supply of storage device, therefore the storage device need not be controlled to be stopped, for example：Decision-making electricity
Put down as low level 0；When detection signal Power_Detect, voltage comparative result VD and electric current comparative result Iref are low levels
When 0, show that the supply voltage of storage device is down to 0, i.e., do not power, therefore stop work also without the control storage device
Make, for example：Decision-making electrical level is low level 0；When detection signal Power_Detect is low level 0, voltage comparative result VD and electricity
Stream comparative result Vef shows that supply voltage after fluctuation declines, recovers again when being high level 1, now storage device by
In in the state of being stopped, it is therefore desirable to control the storage device to rework, such as：Decision-making electrical level is high level 1.
After decision-making electrical level is obtained, can be realized according to decision-making electrical level to whether needing control storage device work again
Make.Control storage device is reworked and has a variety of methods.
Referring to Figure 14, Figure 14 illustrates a kind of SOC and storage device that first embodiment used.In one approach,
Can be by controlling storage device controller work with not working, to control storage device work with not working.Wherein, SOC bags
Host CPU and the first storage device controller are included, storage device includes the second storage device controller and storage medium.
In storage device, storage medium stores the program code of host CPU operation, and related data.Clock circuit
For providing the clock signal required for operation for storage device controller.I/O interface circuitry is used to provide main second storage device
The data-interface that controller communicates with the first storage device controller, and the second storage device controller with storage medium it
Between data-interface.Processor is then used to be controlled clock circuit and I/O interface circuitry.First storage device controller with
The structure of second storage device controller is identical.
SOC is in communication with each other by the first storage device controller of itself and the second storage device controller.When SOC is to depositing
When storing up equipment data storage, the first storage device controller sends the data to the second storage device controller, and the second storage is set
Preparation controller is by the data Cun Chudao storage mediums received；When SOC reads data from storage device, the second storage device control
Device processed reads data from storage medium, then sends the data to the first storage device controller.
It is understood that storage device controller is the passage that SOC reads and writes data to storage device, therefore, work as needs
Control the storage device to be stopped, the first storage device controller can be controlled to be stopped and (in other words, close first to deposit
Store up device controller), when the second storage device controller of storage device is not received from the first storage device controller
Signal, is naturally also stopped.
And control the first storage device controller to be stopped also and have various ways, for example, host CPU is to the first storage device
The processor of controller sends the order for closing clock circuit, and so, the first storage device controller is then stopped, due to not having
There is the clock signal that clock circuit is produced, the processor of the first storage device controller will also be closed, hereafter, the first storage device
Controller can not receive order from host CPU again, unless after being resetted to the first storage device controller, the first storage device
Controller can just rework；Or host CPU sends the order for closing I/O interface circuitry, first to the first storage device controller
Storage device controller also can not receive order from host CPU again, also send data without the storage device controller of normal direction second, unless
After being resetted to the first storage device controller, the first storage device controller can just rework.
Referring to Figure 15, Figure 15 illustrates the clock in the decision-making electrical level and storage device controller that first embodiment is used
The matching relationship of circuit and I/O interface circuitry.In one approach, decision-making electrical level and the clock circuit in storage device controller
With the connection diagram of I/O interface circuitry.Wherein, Reset represents the reseting port of clock circuit and I/O interface circuitry, high level
Effectively.When decision-making electrical level is high level, clock circuit and I/O interface circuitry reset, and start working again, i.e. storage device
Controller and storage device restart work.
Control storage device is reworked and can also have following methods：Shutdown command is sent to storage device, storage device
Receive after shutdown command and storage device closed to (when storage device needs to rework, decision-making electrical level can be used for depositing
Storage equipment is resetted), for example, sending shutdown command closes the clock circuit of storage device, I/O interface circuitry etc..
Referring to Figure 16, Figure 16 illustrates another SOC and storage device that first embodiment used.SOC includes host CPU
With the first EMMC controllers (EMMC Controller), EMMC includes the 2nd EMMC controllers and storage medium.SOC and EMMC
Data interaction may be referred to be previously with regard to Figure 14 explanation.
Specifically, decision-making electrical level can be used for resetting the first storage device controller.For example：Decision-making electrical level with
The reset circuit connection of first storage device controller.When decision-making electrical level is low level 0, reset circuit does not work, and works as decision-making
When level is high level 1, reset circuit work, the first storage device controller is reset, and re-powers work.In the present embodiment
In, decision-making electrical level is obtained by hard-wired decision circuit 110, and the control of the first storage device is controlled according to decision-making electrical level
Device resets, so that control storage device to rework, it is more fast and reliable.In other embodiments, above-mentioned decision circuit 110
The logic of realization can both be realized by the software that is run on host CPU, can also be by the first storage device controller
The software realization run on processor, for example：The processor obtains detection signal Power_Detect, as detection signal Power_
When Detect is low level, then storage device is controlled to be stopped, for example, turning off the clock circuit or I/O interface circuitry of itself
Deng.
Referring to Figure 17, Figure 17 illustrates the operation principle of the autonomous protection mechanism for recovering function of the tool of first embodiment.Can
With understanding, 220V supply networks 501,12V supply networks 502, DETECT networks 503, DETECT signals 504, SOC detections
505, EMMC guard bits judge the reality that 506, EMMC protects 507 and EMMC non-protected 508 to belong to existing EMMC power down mechanism
Existing key element.Wherein, voltage ratio is compared with 511, VD trigger signals 512, and electric current compares 513, Vef trigger signals 514, spontaneous decision system
Judge that 515, RESET triggers 516 and RESET and do not trigger 517 realizations for belonging to the newly-increased under-voltage protection fault tolerant mechanism of the present invention
Key element.
It is noted that referring to Fig. 5, voltage ratio compared with 102 and electric current compare 103 can uniformly be understood as a voltage ratio compared with
Unit, after controlling the storage device to be stopped in triggering, judges whether the supply voltage is increased to triggering control and is somebody's turn to do
Storage device be stopped between voltage.In addition, the logical operation that above-mentioned decision circuit 110 is realized, can change by main
The program realization run on reason device, therefore can be by the mechanism that realizes of this logical operation, collectively referred to as decision package.
The intelligent television 100 of the present invention, on the one hand can realize EMMC power down protections, be realized in technical standpoint controllable；
On the other hand the surge detection of power supply is realized by introducing the under-voltage manner of comparison of power-supply system, and enter according to surge detection
The anticipation of row power utilization environment, further, is detected, to detect user behavior, so as to relatively reliable by introducing increase in current
The anticipation of user view is realized on ground, realized in conjunction with the result of anticipation system reset start, can efficiently against due to
EMMC carry out power down protection and can not spontaneous startup the problem of, substantially improve Consumer's Experience.
Referring to Figure 18, the system that Figure 18 illustrates intelligent television second embodiment of the present invention.The present invention proposes a kind of intelligence
TV 100a, it includes：Power supply 101, electric current compares 103, motherboard power supply converting system 104, internal memory 105, SOC 106,
Storage device 107, RESET (reset system) 108, detection circuit 109 and decision circuit 110a.With the intelligence of aforementioned first embodiment
Energy TV 100 is compared, and the difference of the two is mainly reflected in：By one-level electric current compare 103 come substitute voltage order one compare 102 with
One-level electric current compares 103 combination.It is, comparing 103 to detect whether supply network recovers by one-level electric current, Yi Jiti
The trigger signal needed for direct power down shutdown or the unstable anticipation of user power utilization environment is intended to for user.
It is understood that comparing 103 compared to voltage order one only with one-level electric current compares 102 and one-level electric current ratio
Combination compared with 103, although can have been weakened in terms of the degree of accuracy and sensitivity, but equally can in the range of reasonable receive,
Accurately judge whether electricity consumption recovers, advantageously reduce complexity and cost.Implemented in addition, one-level electric current compares 103,
Figure 10, Figure 11 and Figure 12 are had been transmitted through in first embodiment and related text is described in detail, be will not be repeated here.
Referring to Figure 19, Figure 19 illustrates the decision circuit that second embodiment is used.Decision circuit 110a uses one and door
Realize, decision-making electrical level can be obtained according to detection signal Power_Detect and electric current comparative result Vef.Decision circuit 110a's
Logical table is as follows.
| Power_Detect | Vef | Decision-making electrical level |
| 1 | 1 | 0 |
| 0 | 0 | 0 |
| 0 | 1 | 1 |
Decision-making electrical level and detect signal Power_Detect and electric current comparative result Vef logical relation be：Decision-making electricity
Flat=(/Power_Detect) and (Vef).
Referring to Figure 20, Figure 20 illustrates the operation principle of the autonomous protection mechanism for recovering function of the tool of second embodiment.Can
With understanding, 220V supply networks 501,12V supply networks 502, DETECT networks 503, DETECT signals 504, SOC detections
505, EMMC guard bits judge the reality that 506, EMMC protects 507 and EMMC non-protected 508 to belong to existing EMMC power down mechanism
Existing key element.Wherein, electric current compares 513, and spontaneous decision system judges that 515a, 516 and RESET of RESET triggerings do not trigger 517 and belonged to
Key element is realized in the newly-increased under-voltage protection fault tolerant mechanism of the present invention.
Compared with the situation of the first embodiment shown in earlier figures 17, it is to be appreciated that：Due to eliminate voltage ratio compared with
511, spontaneous decision system judges that the relatively spontaneous decision systems of 515a judge that 515 is also simplified.
Return ginseng Figure 18 and Fig. 5, it is to be appreciated that：Second embodiment is compared with first embodiment, and the difference of the two is：
Voltage ratio is eliminated compared with 102, decision circuit 110a is simplified.It is noted that in a second embodiment, decision-making electrical level was both carried
RESET systems 108 are supplied, power supply 101 are also provided to, this is allowed for：Decision-making electrical level is asked for solving under-voltage protection
Topic, and under-voltage protection mechanism can both have been realized on mainboard, can also be realized on supply power supply 101.By by decision-making electrical level
Fed back to 101 liang of RESET systems 108 and power supply, be capable of the flexible realization of convenient under-voltage protection mechanism.Equally, it is right
In the situation of the first embodiment shown in Fig. 5, the need for decision-making electrical level is according to practical application, supply power supply 101 can also be guided into.
It is noted that referring to Figure 18, although what electric current compared 103 captures is current signal, its comparative result
Provide and relatively realized by voltage ratio, therefore a voltage comparison unit can also be broadly understood as, in triggering
Control after the storage device is stopped, to judge whether the supply voltage is increased to triggering and controls the storage device to be stopped
Between voltage.In addition, similar to first embodiment, the logical operation that decision circuit 110a is realized can change by main process task
The program realization run on device, therefore can be by the mechanism that realizes of this logical operation, collectively referred to as decision package.
The intelligent television 100a of the present invention, on the one hand can realize EMMC power down protections, be realized in technical standpoint controllable；
On the other hand power supply is realized by introducing the under-voltage manner of comparison of one-level current detecting (can also claim increase in current to detect network)
Surge detection, and the anticipation of power utilization environment is carried out according to surge detection, so as to relatively reliable realize user view
Anticipation, realizes that system reset starts in conjunction with the result of anticipation, can be efficiently against due to EMMC progress power down protections
Can not spontaneous startup the problem of, substantially improve Consumer's Experience.
It is noted that in the above-described embodiments, intelligent television 100,100a are the products without power switch.At it
His some embodiments, intelligent television 100,100a are the products 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
Logical technical staff can very easily carry out corresponding flexible or change according to the central scope and spirit of the present invention, therefore this
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, the primary processor powered by the supply power supply, storage device and reset system
System, and voltage detecting circuit, the storage device is controlled for detecting whether the supply voltage of the storage device reduces and trigger
It is stopped；Characterized in that, also including：Voltage comparison unit, after controlling the storage device to be stopped in triggering,
Judge the supply voltage whether be increased to triggering control the storage device be stopped between voltage；And decision package, use
At least trigger signal provided in the detection signal and the voltage comparison unit that are provided according to the voltage detecting circuit, to determine
The storage device whether is controlled to rework.
2. according to the intelligent television described in claim 1, it is characterised in that the voltage comparison unit includes：Voltage comparator circuit,
For supply voltage to be compared with setting voltage threshold, judge whether the supply voltage is increased to triggering and controls the storage to set
For the voltage between being stopped, and correspondence provides the first trigger signal；And current comparison circuit, for detecting that the storage is set
Standby associated current, and judge whether the associated current continues, and correspondence provides the second trigger signal.
3. according to the intelligent television described in claim 2, it is characterised in that the current comparison circuit includes current detecting part,
For the associated current detected to be converted into voltage signal；And voltage rating unit, for current detecting part to be provided
Voltage signal with setting voltage threshold be compared, obtain second trigger signal.
4. according to the intelligent television described in claim 1, it is characterised in that the voltage comparison unit includes：Current comparison circuit,
For detecting the associated current of the storage device, and judge whether the associated current continues, and correspondence provides a trigger signal.
5. according to the intelligent television described in claim 4, it is characterised in that the current comparison circuit includes current detecting part,
For the associated current detected to be converted into voltage signal；And voltage rating unit, for current detecting part to be provided
Voltage signal with setting voltage threshold be compared, obtain the trigger signal.
6. according to the intelligent television described in claim 1, it is characterised in that the detection signal and the trigger signal are level letter
Number；The decision package carries out logical operation to the detection signal and the trigger signal, and provides decision-making electrical level, is given to power supply electricity
Source and/or the reset system.
7. according to the intelligent television described in claim 6, it is characterised in that the decision package is realized by logic circuit；Or, should
The program that decision package is run on the primary processor is realized.
8. according to the intelligent television described in any one of claim 1 to 7, it is characterised in that the storage device is embedded many matchmakers
Body card；The intelligent television includes on-chip system, and the primary processor is located at the on-chip system.
9. a kind of under-voltage protection fault-tolerance approach of intelligent television, it is characterised in that including：
Detect the supply voltage of storage device；
Judging whether the supply voltage reduces and trigger controls the storage device to be stopped, and judges that this is deposited in triggering control
Storage equipment be stopped after, the supply voltage whether be increased to triggering control the storage device be stopped between voltage,
If so, then controlling the storage device to rework.
10. according to the method described in claim 9, it is characterised in that using voltage detecting circuit, voltage comparison unit and decision-making
Unit is engaged, wherein, the voltage detecting circuit is used to detect whether the supply voltage of the storage device reduces and trigger control
The storage device is stopped；The voltage comparison unit is used for after triggering controls the storage device to be stopped, and judging should
Supply voltage whether be increased to triggering control the storage device be stopped between voltage；The decision package, for according to inspection
At least trigger signal that the detection signal and the voltage comparison unit that the step of supply voltage for surveying storage device provides are provided,
To decide whether to control the storage device to rework.
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|---|---|---|---|
| CN2017100617448 | 2017-01-26 | ||
| CN201710061744 | 2017-01-26 |
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| CN201710432051.5A Active CN107426618B (en) | 2017-01-26 | 2017-06-09 | Smart television and its under-voltage protection fault-tolerance approach |
| CN201710431932.5A Active CN107426617B (en) | 2017-01-26 | 2017-06-09 | Intelligent television and undervoltage protection fault-tolerant method thereof |
| CN201710431934.4A Active CN107197380B (en) | 2017-01-26 | 2017-06-09 | Intelligent television and undervoltage protection fault-tolerant method thereof |
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| CN201710432051.5A Active CN107426618B (en) | 2017-01-26 | 2017-06-09 | Smart television and its under-voltage protection fault-tolerance approach |
| CN201710431932.5A Active CN107426617B (en) | 2017-01-26 | 2017-06-09 | Intelligent television and undervoltage protection fault-tolerant method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107426619B (en) | 2019-12-06 |
| CN107426617A (en) | 2017-12-01 |
| CN107197380B (en) | 2019-12-06 |
| CN107426618B (en) | 2019-11-29 |
| CN107426619A (en) | 2017-12-01 |
| CN107426618A (en) | 2017-12-01 |
| CN107426617B (en) | 2020-03-06 |
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