CN101436040B - Projector equipment with electricity-saving function and control circuit and method thereof - Google Patents
Projector equipment with electricity-saving function and control circuit and method thereof Download PDFInfo
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- CN101436040B CN101436040B CN200710169867XA CN200710169867A CN101436040B CN 101436040 B CN101436040 B CN 101436040B CN 200710169867X A CN200710169867X A CN 200710169867XA CN 200710169867 A CN200710169867 A CN 200710169867A CN 101436040 B CN101436040 B CN 101436040B
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Abstract
The invention discloses projection equipment with a power-saving function, which comprises a power supply module, a light source production module and a processing module. The power supply module is used for supplying a working power supply and producing a power supply detection signal according to the working power supply. The processing module is coupled to the power supply module, and produces a control signal to the power supply module to control the size of the produced working power supply according to the power supply detection signal and the operation situation of the projection equipment. The processing module is also coupled with the light source production module, and can also produce a pulse width modulation signal and a voltage signal to the light source production module to adjust the light source illumination produced by the light source production module.
Description
Technical field
The present invention relates to a kind of control circuit and control method of projector equipment, and particularly relate to a kind of control circuit and the method that can control the projector equipment of light-source brightness.
Background technology
Because volume, efficient and power saving to projector have bigger demand, so projector is now done more accurate and more accurate.Fig. 1 illustrates the internal structure block diagram of existing projector equipment.Existing projector equipment comprises primary processor 101, power-supply unit 103, power control unit 105, a plurality of peripheral processes unit 107,109 and 111, light source control unit 113 and light supply apparatus 115.Wherein, power-supply unit 103 is coupled to power control unit 105, and supply working power P1 is to power control unit 105.Power control unit 105 then is coupled to primary processor (ASIC) the 101 peripheral processes unit 107,109 and 111 different with each.Power control unit 105 receives working power P1, and converts working power P1 to each peripheral processes unit and primary processor (ASIC) 101 required power supply.
Primary processor (ASIC) 101 couples light source control unit 113 and each different peripheral processes unit, and couples light supply apparatus 115 on the output of light source control unit 113.After primary processor (ASIC) 101 starts, can send voltage control signal V1 and give light source control unit 113, light source control unit 113 can send the starting state that light source control power supply P2 carries out light supply apparatus 115 according to voltage control signal V1.
After light source control unit 113 startup light supply apparatuses 115 were finished, those peripheral processes unit 107,109 and 111 can be in standby and wait for the input of input signal.Behind the input signal that peripheral processes unit 107,109 and 111 is handled separately, transmit again and output signal to primary processor (ASIC) 101 to finish the action of signal processing.
But, but there are several problems that press for solution in existing projector equipment:
Because of the conducting electric current of light supply apparatus 115 for to decide electric current, cause the production of projector equipment to be difficult for.And so-called production is difficult for being meant because of the light-emitting diode in the light supply apparatus 115 and is different respectively arbitrary sources, the conducting voltage of every light-emitting diode is not necessarily identical, so must select light-emitting diode, that is the light-emitting diode of identical conducting voltage just can meet the current requirements of deciding of light supply apparatus with identical electrical characteristic.
2. after the projector equipment startup is finished is that all peripheral processes unit are powered totally, no matter whether this peripheral processes unit has in work, so cause the unnecessary loss of power supply.
3. existing projector can't be made suitable adjustment to the power supply of light source at environment light and shade of living in own, also can cause the unnecessary consumption of power supply.
Summary of the invention
In view of this, the invention provides a kind of control circuit, be applied to projection arrangement, the detectable working power size of control circuit, and, working power is made suitable adjustment according to the working power size and the idle peripheral processes unit that detect.
The present invention also provides a kind of control circuit, is applied to projection arrangement, and control circuit is suitable for controlling the light supply apparatus in the projector equipment.This projector equipment control circuit can be adjusted the voltage signal current potential according to ambient brightness of living in, and also can be in order to the critical voltage of surveying light-emitting diode and the power supply size of adjusting correspondence according to the critical voltage of each light-emitting diode.
The present invention also provides a kind of control method of projector equipment, and it is detectable to go out idle peripheral processes unit and adjust the size of working power, reduces power consumption, improves the operating efficiency of projector equipment.
The invention provides a kind of control circuit, be applied to projection arrangement, control circuit comprises power-supply unit, power management module, several peripheral processes unit and primary processors.Power-supply unit out-put supply signal, power management module then produces a plurality of working powers according to this power supply signal.In addition, power management module is also according to the power of power supply signal, and produces the power supply detectable signal.Power management module also couples a plurality of peripheral processes unit.Thus, each peripheral processes unit can be respectively according to corresponding working power running.In addition, primary processor then can couple these peripheral processes unit and power management modules, receiving this power supply detectable signal, and survey the operating state of each peripheral processes unit, and the control signals that produce a plurality of respectively corresponding these peripheral processes unit are given power management module.Thus, power management module just can determine the size of the working power of each peripheral processes unit correspondence.
With another viewpoint, the invention provides a kind of projector equipment with electricity-saving function, comprise power module, light source production module and processing module.Power module has power-supply unit, is used for the out-put supply signal.Power module then is to produce a plurality of working powers according to this power supply signal, and can produce the power supply detectable signal according to the power of power supply signal.Processing module is coupled to power module, and it produces a plurality of control signals and give power module according to the operation situation of power supply detectable signal and projector equipment, and the size of the control working power that produces.Processing module also couples light source production module, and this processing module also can produce pulse-width modulation signal and voltage signal and gives light source production module to adjust the light luminance that light source production module was produced.
The present invention also provides a kind of control method of projector equipment, comprise and produce working power to several peripheral processes unit in the projector equipment, and the size of detection operations power supply and produce the power supply detectable signal, the power supply detectable signal can be given primary processor with the working power size passback that is detected, and primary processor is just adjusted the working power size according to the working power size and the operation situation of projector equipment.
In control circuit provided by the present invention and projector equipment control method, mainly be between power-supply unit in the power module and the power control unit power supply probe unit to be set.This power supply probe unit can send the power supply detectable signal to processing module, and reflects the size of working power with the size of this power supply detectable signal.Simultaneously processing module can be adjusted working power according to the operative scenario of the size of power supply detectable signal and peripheral processes unit.In addition, many pulse-width modulation signals between light source production module and the processing module, and reach the effect that projector equipment reduces power loss according to the work period of pulse-width modulation signal.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and in conjunction with the accompanying drawings, be described in detail below.
Description of drawings
Fig. 1 illustrates the internal structure block diagram of existing projector equipment;
Fig. 2 illustrates the block diagram according to a kind of projector equipment of embodiments of the invention;
Fig. 3 illustrates the block diagram according to a kind of power module structure of embodiments of the invention;
Fig. 4 illustrates the circuit diagram according to a kind of power supply probe unit of embodiments of the invention;
Fig. 5 illustrates the block diagram according to a kind of processing module of embodiments of the invention;
Fig. 6 illustrates the flow chart of steps according to a kind of projector equipment control method of embodiments of the invention;
Fig. 7 illustrates the block diagram according to the light source production module structure of the embodiment of the invention;
Fig. 8 illustrates the circuit diagram according to the light source control unit of the embodiment of the invention.
Embodiment
Following narration will be accompanied by the accompanying drawing of embodiment, in detail embodiment proposed by the invention be described.About aforementioned and other technology contents, characteristics and effect of the present invention, in DETAILED DESCRIPTION OF THE PREFERRED, can clearly present below in conjunction with accompanying drawing.The same or analogous reference number that uses in each diagram is to be used for narrating same or analogous part.Must be noted that diagram had all been simplified rather than accurate ratio.In addition, following disclosed technology, only with suitably and clear be purpose, and the relation that couples between unit and unit, unit and module and module and the module for example all only is used for representing appended diagram.It will be appreciated by those skilled in the art that these relations that couple should not be used for limiting spirit of the present invention.
Fig. 2 illustrates the block diagram according to a kind of projector equipment of embodiments of the invention.With reference to Fig. 2, the projector equipment that present embodiment provided comprises control circuit 200 at least.Yet can know these those skilled in the art, in projector equipment, can also comprise other element.For example in the present embodiment, projector equipment also comprises image generation unit 211 and camera lens module 213.Wherein, control circuit 200 can couple image generation unit 211, produces image strip 212 with control image generation unit and gives camera lens module 213.Thus, image strip 212 casts out by camera lens module 213 and produces image frame 214.
In the present embodiment, 200 of projector equipment control circuits comprise processing module 201, power module 203, light source production module 205 at least.And in the present embodiment, control circuit 200 also comprises user's input unit 207 and probe unit 209.Processing module 201 couples power module 203 and light source production module 205.In addition, processing module 201 also receives the output of user's input unit 207 and probe unit 209.
Continuation is with reference to Fig. 2, and power module 203 can provide processing module 201 required a plurality of working power P1 ', so that processing module 201 starts.In addition, power module 203 can also send power supply detectable signal V2 to processing module 201.Thus, processing module 201 can be given power module 203 and produce a plurality of control signal S1 according to the operation situation of detectable signal V2 and processing module 201 itself, adjusts the size of working power P1 ' with corresponding control power module 203 respectively.
Fig. 3 illustrates the block diagram according to a kind of power module 203 structures of embodiments of the invention.With reference to Fig. 3, power module 203 can comprise power-supply unit 301 and power management module 303.Power-supply unit 301 can be to exchange transformer or the battery module that changes direct current, and it is coupled to power management module 303, is used for out-put supply signal P1 to power management module 303.
Then comprise power supply probe unit 305 and power control unit 307 in the power management module 303.Wherein, power supply probe unit 305 couples the output of power-supply unit 301, to receive power supply signal P1.On the other hand, 307 of power control units pass through power supply probe unit 305 and receive power supply signal P1, and export a plurality of working power P1 ' and give processing module 201.When power-supply unit 301 was exported to power management module 303 with power supply signal P1, power supply probe unit 305 can be surveyed the size of power supply signal P1 earlier, and produced detectable signal V2.
Fig. 4 illustrates the circuit diagram according to a kind of power supply probe unit 305 of embodiments of the invention.With reference to Fig. 4, power supply probe unit 305 utilizes resistance 401 to realize.In the present embodiment, the two ends of resistance 401 couple the input (I+ and I-) and the output (O+ and O-) of power supply probe unit 305 respectively.When power supply signal P1 process resistance 401, can cause voltage difference at two ends, and this voltage difference just is used as detectable signal V2.Therefore, by detectable signal V2, just can learn the size of power supply signal P1.
Fig. 5 illustrates the block diagram according to a kind of processing module 201 of embodiments of the invention.With reference to Fig. 5, processing module 201 can comprise primary processor 501 and several peripheral processes unit 503,505 and 507.Primary processor 501 is coupled to peripheral processes unit 503,505 and 507, and couples power module 203 to receive power supply detectable signal V2.In the present embodiment, peripheral processes unit 503,505 and 507 can comprise analog-digital converter, look letter processor and message processor.As its name suggests, analog-digital converter is to be used for converting analogue signals to become digital signal, can decipher respectively and looks letter data and message data and look letter decoder and message decoder.In addition, peripheral processes unit and 503,505 and 507 also couples power module 203, operates to receive working power P1 '.
Fig. 6 illustrates the flow chart of steps according to a kind of projector equipment control method of embodiments of the invention.Merging is with reference to Fig. 3, Fig. 5 and Fig. 6, and when power supply probe unit 303 output detectable signal V2 gave processing module 201, primary processor 501 can judge that whether detectable signal V2 is greater than default value (S601).When detectable signal V2 is not more than this default value (being exactly the "No" that step S601 is indicated), then primary processor 501 can be exported control signal S1 and give power control unit 307, make it keep normal working power P1 ' size (S603), and repeat step such as S601.
Relatively, as detectable signal V2 during greater than default value (being exactly the "Yes" that step S601 is indicated), the power supply signal P1 that represents power-supply unit 301 to be exported may be too big.Whether at this moment, primary processor 501 will be surveyed has the peripheral processes unit not operate (S605).Because peripheral processes unit 503,505 and 507 is not all to be in operating state at any time, therefore have arbitrary when not operating (being exactly the "Yes" that step S605 is indicated) when primary processor 501 detects peripheral processes unit 503,505 and 507, then export corresponding control signal S1 and give power control unit 307, make it adjust the size of corresponding working power P1 '.In some embodiments, power control unit 307 even can stop power supply to the peripheral processes unit that does not operate.Thus, just can reduce the consumption of power supply.
In other embodiment, when primary processor 501 detects peripheral processes unit 503,505 and 507 all in running (being exactly the "No" that step S605 is indicated), then repeat steps such as S603.
Refer again to Fig. 2, processing module 201 is except the power supply that can control power module 203, also can be according to the output (I1 and L1) of user's input unit 207 and probe unit 209, and output voltage signal V1 and pulse-width modulation signal PWM give control light source production module 205, to control the brightness that it produces light source.
Fig. 7 illustrates the block diagram according to a kind of light source production module of embodiments of the invention.With reference to Fig. 7, light source production module 205 comprises light source control unit 701 and light supply apparatus 703.Wherein, light supply apparatus 703 can be superhigh pressure projection mercury lamp or several light-emitting diodes, in order to produce the required light source of projection.And light source control unit 701 is coupled to light supply apparatus 703, produces light source control power supply P2 with foundation voltage signal V1 and pulse-width modulation signal PWM and gives light supply apparatus 703, controls the light and shade of the light source that light supply apparatus 703 produced.In some embodiments of the invention, when light supply apparatus 703 utilized light-emitting diode to realize, then light source control unit 701 can be according to the critical voltage of each light-emitting diode, and adjusted the size of corresponding light source control power supply P2.Wherein, light source control power supply P2 can be the drive current of light-emitting diode.
Fig. 8 illustrates the circuit diagram according to a kind of light source control unit 701 of embodiments of the invention.With reference to Fig. 8, in this hypothesis, the light source in the light supply apparatus 703 of Fig. 7 is a light-emitting diode.Light source control unit 701 can comprise resistance 801 and switching transistor 805.Wherein, a termination of resistance 801 is received voltage signal V1, and the other end then is coupled to the anode tap of the light-emitting diode 803 in the light supply apparatus 703.In addition, the gate terminal of switching transistor 705 receives pulse-width modulation signal PWM, its source terminal ground connection, and its drain electrode end then is coupled to the cathode terminal of light-emitting diode 703.
Merging is with reference to Fig. 5 and Fig. 8, and when the user person of manipulating input unit 207, primary processor 501 can be given light source control unit 701 and produce voltage signal V1 according to input signal I1.When voltage signal V1 passes through resistance 801, can convert drive current Id to driven for emitting lights diode 803.Because the size of voltage signal V1 is directly proportional with the size of drive current Id, and the size of drive current Id is directly proportional with the brightness of light-emitting diode 803.Therefore, as long as the user is by the person's of manipulating input unit 207, the brightness of light supply apparatus 703 that just can control chart 7.
In addition, the probe unit 209 of Fig. 2 can be a photo-detector.When probe unit 209 detects the brightness of environment, can export luminance signal L1 and give primary processor 501.When primary processor 501 receives luminance signal L1, just can produce pulse-width modulation signal PWM and give light source control unit 701.As pulse-width modulation signal PWM during in the work period, switching transistor 805 just can conducting, and light-emitting diode 803 is driven.Relatively, as pulse-width modulation signal PWM during not in the work period, switching transistor 805 just may end, and makes light-emitting diode 803 by forbidden energy.
In the present embodiment, the work period length of the size of luminance signal L1 and pulse-width modulation signal PWM can be inversely proportional to.That is to say that brighter when ambient brightness, then the current potential of luminance signal L1 is just high, causes the work period of pulse-width modulation signal PWM to shorten, so the brightness of the light source that produced of light supply apparatus 703 will reduce, to save the consumption of power supply.
The control circuit of projector equipment provided by the present invention and method can be adjusted working power according to the operation situation of working power size with projector equipment.Therefore, can avoid unnecessary electrical source consumption.And this circuit can produce pulse-width modulation signal PWM in response to the size of surrounding environment brightness, and the work period of passing through the pulse-width modulation signal PWM that produced is adjusted the brightness of the light source that projector equipment produced.Hold above-mentionedly, this projector equipment just can reach best power saving effect
The above, only be the preferred embodiments of the present invention, when not limiting scope of the invention process with this, promptly the simple equivalent of being done according to claim of the present invention and invention description content generally changes and modifies, and all still belongs in the scope that patent of the present invention contains.Arbitrary embodiment of the present invention in addition or claim must not reached whole purpose disclosed in this invention or advantage or characteristics.In addition, summary part and title only are the usefulness that is used for assisting the patent document search, are not to be used for limiting interest field of the present invention.
Claims (18)
1. the control circuit of a projector equipment comprises:
Power-supply unit is in order to the out-put supply signal;
Power management module receives described power supply signal and produces a plurality of working powers, and described power management module is also according to the power of described power supply signal, and produces the power supply detectable signal;
A plurality of peripheral processes unit couples described power management module, operates to receive described working power accordingly respectively; And
Primary processor, couple described peripheral processes unit and described power management module, in order to receive described power supply detectable signal, and survey the operating state of described peripheral processes unit, the control signal that produces the corresponding described peripheral processes of a plurality of difference unit is given described power management module, to determine the size of described working power, wherein, described primary processor judges that whether described power supply detectable signal is greater than default value, when the described power supply detectable signal of detection is not more than described default value, then described primary processor is exported described control signal and is given described power management module, make described power management module keep described working power, when described power supply detectable signal greater than described default value, whether then described primary processor is surveyed described peripheral processes unit has and does not arbitraryly operate, wherein when described peripheral processes unit arbitrary do not operate, reduce the described working power of the described peripheral processes unit that does not operate.
2. the control circuit of projector equipment as claimed in claim 1, wherein said power-supply unit comprise exchange change commutator transformer and battery module at least one of them.
3. the control circuit of projector equipment as claimed in claim 1, wherein said peripheral processes unit comprises:
Analog-digital converter couples described Power Management Unit, in order to analog signal conversion is become digital signal;
Look the letter decoder, couple described Power Management Unit, look letter data in order to decoding; And
The message decoder couples described Power Management Unit, in order to decoding message data.
4. the control circuit of projector equipment as claimed in claim 1, wherein said power management module comprises:
The power supply probe unit in order to surveying the power of described power supply signal, and produces described power supply detectable signal; And
Power control unit is given described peripheral processes unit in order to receive described control signal and the described working power of corresponding respectively output that described primary processor produces.
5. the control circuit of projector equipment as claimed in claim 4, wherein said power supply probe unit comprises resistance.
6. projector equipment with electricity-saving function comprises:
Power module has power-supply unit, and in order to the out-put supply signal, described power module produces a plurality of working powers according to described power supply signal, and produces the power supply detectable signal according to the power of described power supply signal;
Light source production module is in order to produce the required light of described projection; And
Processing module, couple described power module and described light source production module, operation situation according to described power supply detectable signal and described projector equipment, give described power module and produce a plurality of control signals, to adjust the size of corresponding described working power, and described processing module also produces voltage signal and pulse-width modulation signal and gives described light source production module, and to adjust the brightness of the described light that described light source production module produced, described processing module comprises:
A plurality of peripheral processes unit, in order to operate according to described working power, wherein said processing module is according to the operation situation of described power supply detectable signal and described peripheral processes unit, give described power module and produce described control signal, size with the described working power of adjusting each described peripheral processes unit
Wherein, Described processing module judges that whether described power supply detectable signal is greater than default value; When the described power supply detectable signal of detection is not more than described default value; Then described processing module is exported described control signal and is given described power module; Make described power module keep described working power; When described power supply detectable signal greater than described default value; Whether then described processing module is surveyed described peripheral processes unit has and does not arbitraryly operate; Wherein when described peripheral processes unit arbitrary do not operate; Reduce the described working power of the described peripheral processes unit that does not operate
Wherein, described processing module is also controlled described voltage signal and is controlled the work period of described pulse-width modulation signal according to the ambient brightness at the described projector equipment place of detecting according to user's input, thereby adjust the brightness of the described light that described light source production module produces, the described work period and the described ambient brightness of wherein said pulse-width modulation signal are inversely proportional to.
7. the projector equipment with electricity-saving function as claimed in claim 6 also comprises:
The image generation unit couples described processing module, in order to produce image strip; And
Camera lens module projects described image strip and produces image frame.
8. the projector equipment with electricity-saving function as claimed in claim 6, wherein said power module comprises:
The power supply probe unit couples described power-supply unit, in order to receiving described power supply signal, and surveys the power of described power supply signal and produces described power supply detectable signal and give described processing module; And
Power control unit offers described processing module with described working power.
9. the projector equipment with electricity-saving function as claimed in claim 6, wherein said processing module also comprises:
Primary processor couples described power module, described light source production module and described peripheral processes unit, in order to receiving described power supply detectable signal, and produces described voltage signal and described pulse-width modulation signal is given described light source production module,
Wherein said primary processor is given described power module and produce described control signal, to adjust the size of the required described working power in each described peripheral processes unit according to the operation situation of described power supply detectable signal and described peripheral processes unit.
10. the projector equipment with electricity-saving function as claimed in claim 9, wherein said peripheral processes unit comprises:
Analog-digital converter in order to analog signal conversion is become digital signal, and is exported to described primary processor;
Look the letter decoder, look letter data, and decode results is delivered to described primary processor in order to decoding; And
The message decoder in order to decoding message data, and is delivered to described primary processor with decode results.
11. the projector equipment with electricity-saving function as claimed in claim 6, wherein said light source production module comprises:
Light supply apparatus is in order to produce the required light of described projection; And
Light source control unit couples described processing module and described light supply apparatus, and is luminous in order to control described light supply apparatus according to described voltage signal and described pulse-width modulation signal.
12. the projector equipment with electricity-saving function as claimed in claim 11, wherein said light supply apparatus comprises a plurality of light-emitting diodes.
13. the projector equipment with electricity-saving function as claimed in claim 12, wherein said light source control unit be also in order to surveying the critical voltage of described light-emitting diode, and adjust corresponding drive current according to the critical voltage of each described light-emitting diode.
14. the projector equipment with electricity-saving function as claimed in claim 12, wherein said light source control unit comprises:
Resistance, the one termination is received described voltage signal, and its other end then couples one of them anode tap of more described light-emitting diode; And
Switching transistor, its gate terminal receive described pulse-width modulation signal, its source terminal ground connection, and its drain electrode end couples the cathode terminal of the light-emitting diode that described resistance couples.
15. the projector equipment with electricity-saving function as claimed in claim 6 also comprises:
User's input unit couples described processor module, produces input signal in order to foundation user's operation and gives described processing module, to adjust the current potential of described voltage signal; And
Probe unit couples described processing module, in order to surveying the ambient brightness at described projector equipment place, and produces luminance signal and gives described processing module, to adjust the described work period of described pulse-width modulation signal.
16. the control method of a projector equipment comprises the following steps:
Produce a plurality of working powers according to power supply signal, so that the unit of a plurality of peripheral processes in the described projector equipment to be provided;
Survey the power of described power supply signal; And
According to the power of described power supply signal and the operation situation of described projector equipment, and adjust the size of described working power, wherein, when described power supply detectable signal is not more than described default value, then keep described working power, when described power supply detectable signal greater than described default value, whether then survey described peripheral processes unit has and does not arbitraryly operate, wherein when described peripheral processes unit arbitrary do not operate, reduce the described working power of the described peripheral processes unit that does not operate.
17. the control method of projector equipment as claimed in claim 16, wherein said peripheral processes comprise the analog digital conversion process, look letter data translator and message data decoding program.
18. the control method of projector equipment as claimed in claim 16 is wherein adjusted the step of described light-source brightness, comprises the following steps:
Control the size of described voltage signal according to described user's input, to determine the light and shade of the light that described light source is produced; And
According to the light and shade of described ambient brightness, and determine the length of the work period of described pulse-width modulation signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710169867XA CN101436040B (en) | 2007-11-14 | 2007-11-14 | Projector equipment with electricity-saving function and control circuit and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710169867XA CN101436040B (en) | 2007-11-14 | 2007-11-14 | Projector equipment with electricity-saving function and control circuit and method thereof |
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| CN101436040A CN101436040A (en) | 2009-05-20 |
| CN101436040B true CN101436040B (en) | 2011-09-14 |
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| CN200710169867XA Expired - Fee Related CN101436040B (en) | 2007-11-14 | 2007-11-14 | Projector equipment with electricity-saving function and control circuit and method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102420960A (en) * | 2011-03-16 | 2012-04-18 | 明基电通有限公司 | Display module for projector and method for controlling power supply of projector |
| CN105320195B (en) * | 2014-06-26 | 2019-07-09 | 中兴通讯股份有限公司 | Projection signal's processing method and processing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1628336A (en) * | 2002-06-25 | 2005-06-15 | 富士通株式会社 | Display and power-saving controller |
| CN1696999A (en) * | 2004-05-15 | 2005-11-16 | 鸿富锦精密工业（深圳）有限公司 | LED indicating device and method |
| CN2762437Y (en) * | 2004-12-14 | 2006-03-01 | 项国华 | Automatic photoelectric controller |
| CN1759430A (en) * | 2003-01-24 | 2006-04-12 | 索尼株式会社 | Display device |
| WO2007043264A1 (en) * | 2005-10-14 | 2007-04-19 | Matsushita Electric Industrial Co., Ltd. | Display control device |
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2007
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1628336A (en) * | 2002-06-25 | 2005-06-15 | 富士通株式会社 | Display and power-saving controller |
| CN1759430A (en) * | 2003-01-24 | 2006-04-12 | 索尼株式会社 | Display device |
| CN1696999A (en) * | 2004-05-15 | 2005-11-16 | 鸿富锦精密工业（深圳）有限公司 | LED indicating device and method |
| CN2762437Y (en) * | 2004-12-14 | 2006-03-01 | 项国华 | Automatic photoelectric controller |
| WO2007043264A1 (en) * | 2005-10-14 | 2007-04-19 | Matsushita Electric Industrial Co., Ltd. | Display control device |
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