CN1874451A - Electrical power control unit for plasma TV set - Google Patents
Electrical power control unit for plasma TV set Download PDFInfo
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- CN1874451A CN1874451A CN 200510046558 CN200510046558A CN1874451A CN 1874451 A CN1874451 A CN 1874451A CN 200510046558 CN200510046558 CN 200510046558 CN 200510046558 A CN200510046558 A CN 200510046558A CN 1874451 A CN1874451 A CN 1874451A
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Abstract
The invention comprises: a positive voltage generating unit for generating a predetermined positive voltage, one end of it is connected to the prime side coil of transformer and another end is connected to a transistor; a addressing voltage/maintaining voltage power unit for outputting the addressing voltage and maintaining voltage; a multiple power unit for output working voltage of TV set, in which checking one of the outputs of multiple power, if it has a normal output, then the working signal is outputted to the control IC of the addressing voltage and maintaining voltage power; a MPU for outputting the working stop signal not relative to the output of multiple power unit to the control IC of the addressing voltage and maintaining voltage power unit, after receiving an instruction entering into stand by mode.
Description
Technical field
The present invention will be referred to plasma TV, particularly relates to the power control of plasma TV.
Background technology
Television set is from the broadcast singal that transmit in the broadcasting station, to select broadcast singal according to the channel that the user selects, and the broadcast singal of selecting carried out being separated into sound and picture signal after the demodulation, again to after sound and the image respective handling, the image display of exporting by picture and loud speaker.Its kind has the most widely used cathode ray tube (CRT); In addition, in order to satisfy the demand of high picture quality/big characteristics of pictures, utilize the television set of liquid crystal (LCD), plasma (PDP) etc. in addition.
Particularly, with regard to plasma display panel, comparing with traditional cathode ray tube (CRT) on its architectural characteristic to do thinly, and compare on light characteristic more superior with liquid crystal display (LCD), thereby can satisfy key technology well as television set, outstanding especially is to be set to hang on the wall, therefore is subjected to attracting attention of people as striding the TV in epoch.
But, on the characteristic of plasma display panel (PDP), owing to need high voltage, so the relevant formation of its power supply, become the key technology of finishing commonly usedization of plasma display panel (PDP).
As seen the summary of analyzing plasma display panel (PDP) constitutes, and it is to be cooperated each other by upper plate and lower plate with constituting.Upper plate is by being set to scan electrode parallel to each other, keeping electrode and having conductive layer and the diaphragm that comprises scan electrode, keeps electrode and form at upper plate.And lower plate is to be made of addressing electrode, the fluorophor that is provided with on the surface of the barrier that comprises the conducting film that is provided with previously of addressing electrode substrate, is provided with on the top of the conducting film between the addressing electrode and barrier in each discharge cell and conducting film etc.And the space between upper plate and lower plate is that the discharge gas of filling helium (He), xenon mixing non-active gas such as (Xe) forms region of discharge.
To discharge gas be discharged along with introducing assigned voltage as above-mentioned plasma display panel (PDP) to each electrode.And the ultraviolet ray that produces during discharge activates fluorophor and forms shades of colour.Therefore, according to the timing of in electrode, having set, when introducing assigned voltage, for the driving of control plasma display panel (PDP) module is provided with module drive portion.
The power control of conventional art plasma (PDP) television set is as shown in Figure 1, constitute by following part: be received as during standby mode (Stand-by) form except that function the picture output (as, the work of microprocessor) and the input AC power commonly used, and produce low-voltage (as, as the 5V voltage of microprocessor work voltage) standby power portion 11; The AC power commonly used that reception is transfused to, and for produce the positive voltage set (as, 380V) and the positive voltage generating unit 12 that is provided with; According to control signal the positive voltage that produces in the positive voltage generating unit 12 is carried out voltage transformation, and drive plasma display panel (PDP) and keep the needed addressing voltage (Va) of keeping voltage (Vs) (about 190V) and being provided with for the addressing voltage (Va) (about 60V) that the driving addressing electrode is provided of electrode/keep voltage (Vs) power supply unit 14 for providing; The positive voltage that produces in the positive voltage generating unit 12 is carried out voltage transformation, and the multiple power supply unit 13 that is provided with for the needed operating voltage of exporting except that keeping voltage (Vs) and addressing voltage (Va) of plasma (PDP) television set work (12V, 5V, 3.3V, sound equipment output voltage etc.); Form if the 5V of multiple power supply unit 13 output is normal, then for the control signal of addressing voltage (Va)/keep voltage (Vs) power supply unit 14 operate as normal { addressing voltage (Va)/keep the connection of voltage (Vs) } being outputed to addressing voltage (Va)/keep voltage (Vs) power supply unit 14, and, if imported the standby mode switching command, then for the signal of 2 sides outputs cutting off addressing voltage (Va)/keep voltage (Vs) power supply unit 14, output to addressing voltage (Va)/keep voltage (Vs) power supply unit 14 and the microprocessor 15 that is provided with.
At this moment, addressing voltage (Va)/keep voltage (Vs) power supply unit 14 is by transformer T, according to microprocessor 15 control signals, controls the control integrated circuit (IC) 21 that is provided with for 1 side power supply of transformer T provides, controls the output switch portion 22 that is provided with for the output of 2 sides of transformer T.
Power supply Control work to the conventional art of above-mentioned formation is described as follows:
At first, standby power portion 11 will receive the input of interchange (AC) power supply, and interchange (AC) power supply that receives is carried out offering needed each parts of standby mode work after rectification and the voltage of transformation, for example, and the driving voltage 5V of microprocessor 15.
Meanwhile, positive voltage generating unit 12 will receive interchange (AC) power supply, and produce the positive voltage of having set.
Then, the positive voltage that 13 pairs of positive voltage generating units of multiple power supply unit 12 produce carries out after the voltage transformation, will produce the needed driving voltage of each driving work (12V, 5V, 3.3V, sound equipment output voltage etc.).
In addition, microprocessor 15 will detect the 5V voltage output of multiple power supply unit 13, if testing result is normally exported 5V voltage, then in order to make addressing voltage (Va)/the keep work of voltage (Vs) power supply unit 14, addressing voltage (Va), connection (ON) signal of keeping voltage (Vs) are outputed to addressing voltage (Va)/the keep control integrated circuit 21 of voltage (Vs) power supply unit 14.
Then, the control integrated circuit 21 of addressing voltage (Va)/keep voltage (Vs) power supply unit 14 will be according to addressing voltage (Va), connection (ON) signal of keeping voltage (Vs) are begun to carry out work, and when 1 lateral current magnitude of transformer controlled, produce the output of wishing by 2 sides.
In addition, if microprocessor 15 has been imported standby command, and multiple power supply unit 13 normal output 5V voltages, then in order to make addressing voltage (Va)/the keep work of voltage (Vs) power supply unit 14, continue to keep with addressing voltage (Va), connection (ON) signal of keeping voltage (Vs) outputs to addressing voltage (Va)/the keep work of the control integrated circuit 21 of voltage (Vs) power supply unit 14, and the output switch portion 22 of addressing voltage (Va)/keep voltage (Vs) power supply unit 14 controlled simultaneously, can not make the output of 2 sides of transformer T supply with plasma display panel (PDP).
That is,, then cut off the output of 2 sides of transformer T by 22 controls of output switch portion if imported standby command; If multiple power supply unit 13 normal output 5V voltages then continue to keep addressing voltage (Va)/the keep work of voltage (Vs) power supply unit 14.
As above-mentioned, the power control of conventional art plasma (PDP) television set, owing to only cut off 2 sides outputs of addressing voltage (Va)/keep voltage (Vs) power supply unit 14, but the work of self continues to keep, therefore there are the following problems:
The first, be the above high tension voltage of 190V owing to keep voltage (Vs), therefore be difficult to realize the action of switch.
The second, owing to carry out the action of switch, therefore cause and the infringement of exporting connected components such as switch portion by high voltage.
Summary of the invention
The power control of plasma TV is provided in order to solve above-mentioned technology existing problems, its objective is that the voltage that power supply provides when standby mode can not influence relevant parts, and, can simply and reliably form output is cut off.
The power control of plasma TV of the present invention is to be made of following part: receive the AC power commonly used that is transfused to, and produce the positive voltage generating unit of having set the level positive voltage; The output of positive voltage generating unit, link to each other with 1 lateral coil one end of transformer T, 1 lateral coil other end of transformer T links to each other with transistor Q, and according to external control signal, for oxide-semiconductor control transistors links to each other with control integrated circuit, simultaneously for by 2 lateral coils output addressing voltages of transformer and keep the addressing voltage that voltage is provided with/keep voltage source portion; For the positive voltage that produces from the positive voltage generating unit is transformed into the operating voltage of the plasma TV except keeping voltage and addressing voltage, and export the multiple power supply unit that is provided with for the television set operating voltage after the conversion; In the output of multiple power supply unit, detect wherein any one, and, if form normal output, then working signal is outputed to addressing voltage/the keep control integrated circuit of voltage source portion; If imported the standby mode order, the microprocessor that is provided with in order to output to addressing voltage/keep the control integrated circuit of voltage source portion then with the irrelevant termination signal of will working of multiple power supply unit output.
Advantageous effect of the present invention: the power control of plasma TV of the present invention is different with the power control of traditional plasma TV, when standby mode, owing to can not make addressing voltage (Va)/keep voltage (Vs) power supply unit work, therefore can ideally prevent conventional method because there is certain difficulty in switch work itself, and also can prevent the component damage that causes by switch, cut off and have an effect that reduces power consumption thereby form output with reliability.
Description of drawings
Fig. 1 is the formation block diagram of the power control of conventional art plasma TV.
Fig. 2 is the formation block diagram of the power control of plasma TV of the present invention.
To accompanying drawing major part symbol description:
31: standby power portion; 32: the positive voltage generating unit; 33: multiple power supply unit; 34: addressing voltage/keep voltage source portion; 35: microprocessor; 41: control integrated circuit; T: transformer; Q: transistor.
Embodiment
Followingly describe with reference to the example of accompanying drawing to the power control of plasma TV of the present invention.
Fig. 2 is the formation block diagram of the power control of plasma TV of the present invention.
The power control of plasma TV of the present invention as shown in Figure 2, be to constitute: during standby mode (Stand-by) by following part, be received as form to remove picture export function (as, the work of microprocessor) and the input AC power commonly used, and produce low-voltage (as, as the 5V voltage of microprocessor work voltage) standby power portion 31; The AC power commonly used that reception is transfused to, and the positive voltage generating unit 32 of the positive voltage of level has been set in generation; The output of positive voltage generating unit 32, link to each other with 1 lateral coil one end of transformer T, 1 lateral coil other end of transformer T links to each other with transistor Q, and according to external control signal, for oxide-semiconductor control transistors Q, link to each other with control integrated circuit 41, simultaneously in order to export addressing voltages (Va) by 2 lateral coils of transformer and to keep the addressing voltage (Va) that voltage (Vs) is provided with/keep voltage (Vs) power supply unit 34; For the positive voltage that produces from positive voltage generating unit 32 is transformed into plasma TV operating voltage except that keeping voltage (Vs) and addressing voltage (Va), and conversion television set operating voltage afterwards exported and the multiple power supply unit 33 that is provided with; And, in the output of multiple power supply unit 33, detect wherein any one, and, if form normal output, then working signal is outputed to addressing voltage (Va)/the keep control integrated circuit 41 of voltage (Vs) power supply unit 34; If imported the standby mode order, then in order to output to the control integrated circuit 41 of addressing voltage (Va)/keep voltage (Vs) power supply unit 34 and the microprocessor 35 of setting with the irrelevant termination signal of will work of multiple power supply unit 33 outputs.
Power supply Control work of the present invention to above-mentioned formation is described in detail as follows:
At first, standby power portion 31 will receive the input of interchange (AC) power supply, and interchange (AC) power supply that receives is carried out offering needed each parts of standby mode work after rectification and the voltage of transformation, for example, and the 5V driving voltage of microprocessor 35.
Meanwhile, positive voltage generating unit 32 will receive interchange (AC) power supply, and produce the positive voltage of having set.
Then, the positive voltage that 33 pairs of positive voltage generating units of multiple power supply unit 32 produce carries out after the voltage of transformation, will produce the needed driving voltage of each driving work (12V, 5V, 3.3V, sound equipment output voltage etc.).
In addition, microprocessor 35 will detect the 5V voltage output of multiple power supply unit 33, if testing result forms normal output 5V voltage, be in order to make 34 work of addressing voltage (Va)/keep voltage (Vs) power supply unit, addressing voltage (Va), connection (ON) signal of keeping voltage (Vs) are outputed to addressing voltage (Va)/the keep control integrated circuit 41 of voltage (Vs) power supply unit 34.
Then, the control integrated circuit 41 of addressing voltage (Va)/keep voltage (Vs) power supply unit 34 will be according to addressing voltage (Va), connection (ON) signal of keeping voltage (Vs) are begun to carry out work, and when 1 lateral current magnitude of transformer T controlled, produce the output of wishing by 2 sides.
In addition, microprocessor 35, if imported standby command, then multiple power supply unit 33 and output 5V independent from voltage and in order to make addressing voltage (Va)/keep voltage (Vs) power supply unit 34 not allow work, the termination signal of will working promptly outputs to addressing voltage (Va)/the keep control integrated circuit 41 of voltage (Vs) power supply unit 34 to addressing voltage (Va), (OFF) signal of closing of keeping voltage (Vs).
Then, addressing voltage (Va)/keep voltage (Vs) power supply unit 34 can not make control integrated circuit 41 work, and can not work according to control integrated circuit 41 and to stop the work of transformer T.
That is, if imported standby command, then because output in order to stop the control signal of control integrated circuit 41 work, therefore can be cut off the power supply supply that provides from 1 side of transformer T.
Claims (1)
1, the power control of plasma TV is characterized in that it being to be made of following part:
The AC power commonly used that reception is transfused to, and produce the positive voltage generating unit of having set the level positive voltage;
The output of positive voltage generating unit, link to each other with 1 lateral coil one end of transformer T, 1 lateral coil other end of transformer T links to each other with transistor Q, and according to external control signal, for oxide-semiconductor control transistors links to each other with control integrated circuit, simultaneously for by 2 lateral coils output addressing voltages of transformer and keep the addressing voltage that voltage is provided with/keep voltage source portion;
For the positive voltage that produces from the positive voltage generating unit is transformed into the operating voltage of the plasma TV except keeping voltage and addressing voltage, and export the multiple power supply unit that is provided with for the television set operating voltage after the conversion;
In the output of multiple power supply unit, detect wherein any one, and, if form normal output, then working signal is outputed to addressing voltage/the keep control integrated circuit of voltage source portion;
If imported the standby mode order, the microprocessor that is provided with in order to output to addressing voltage/keep the control integrated circuit of voltage source portion then with the irrelevant termination signal of will working of multiple power supply unit output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510046558 CN1874451A (en) | 2005-06-01 | 2005-06-01 | Electrical power control unit for plasma TV set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510046558 CN1874451A (en) | 2005-06-01 | 2005-06-01 | Electrical power control unit for plasma TV set |
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| CN1874451A true CN1874451A (en) | 2006-12-06 |
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| CN 200510046558 Pending CN1874451A (en) | 2005-06-01 | 2005-06-01 | Electrical power control unit for plasma TV set |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101287069B (en) * | 2007-04-13 | 2010-08-11 | 索尼株式会社 | Wireless receiving apparatus and electronic appliance |
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2005
- 2005-06-01 CN CN 200510046558 patent/CN1874451A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101287069B (en) * | 2007-04-13 | 2010-08-11 | 索尼株式会社 | Wireless receiving apparatus and electronic appliance |
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Owner name: LG ELECTRONICS (NANJING) PLASMA CO., LTD. Free format text: FORMER OWNER: LG ELECTRONICS (SHENYANG) CO., LTD. Effective date: 20070316 |
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Effective date of registration: 20070316 Address after: 210046 Hengtong Datong 77, Nanjing economic and Technological Development Zone, Jiangsu Applicant after: LG Electronics (Nanjing) Plasma Co., Ltd. Address before: 110179 No. 3540 hi tech Development Zone, Liaoning, Shenyang Applicant before: LG Electronic (Shenyang) Co., Ltd. |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |