CN101163217B - Digital/analog integrated television set and rear end power supply method thereof - Google Patents
Digital/analog integrated television set and rear end power supply method thereof Download PDFInfo
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- CN101163217B CN101163217B CN200610063068A CN200610063068A CN101163217B CN 101163217 B CN101163217 B CN 101163217B CN 200610063068 A CN200610063068 A CN 200610063068A CN 200610063068 A CN200610063068 A CN 200610063068A CN 101163217 B CN101163217 B CN 101163217B
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000012806 monitoring device Methods 0.000 claims description 31
- 238000012544 monitoring process Methods 0.000 claims description 5
- 230000000295 complement effect Effects 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract 7
- 230000000638 stimulation Effects 0.000 abstract 2
- 230000002950 deficient Effects 0.000 description 4
- 230000002045 lasting effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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Abstract
The invention relates to an iDTV, which comprises an electricity source, a front system, and a rear drive circuit. The front system comprises a main CPU and is connected to the electricity source, and also comprises a controlling component which is connected to the output of the electricity source, the input of the rear drive circuit and the front system, which are connected to the electricity source. The invention also discloses a method of iDTV rear electricity supply, which includes the following procedures: electrifying; reading data which shows the leading speed of the front system; comparing data; outputting controlling signals. The execution of iDTV and the method of rear electricity supply of the invention has the beneficial effects that: with separate electricity supply to the front system and the rear drive circuit, the rear drive circuit can not work with the leading of the front system unfinished, thus resolving the disadvantages of overlong waiting after kinescope being lighted and over stimulation or under stimulation of kinescope.
Description
Technical field
The present invention relates to television set, more particularly, relate to a kind of analogue digital integrated television and rear end power supply method thereof.
Background technology
Digital/analog integrated television set is meant at a television set, can receive the TV signal of simulation, also can receive the TV signal of numeral, portion within it, and existing simulation receiving unit also has the digital processing part.Because its special formation in digital/analog integrated television set, has embedded OS usually, in general, receives to signal processing (comprising embedded OS), is called as front end; And the part that vision signal shows on screen after being resumed to the end as row, a driving etc., is called as the rear end.
The CRT integrated analog/digital equipment all will use a rear end chip for driving (as TA1306, SDA9380 etc.) at present, is used to export drive look the rgb signal and capable a, drive signal of putting, EW correction signal etc.This chip has characteristics, as long as a power supply will be exported horizontal-drive signal, line output circuit is started working, and produces high pressure.Existing number is touched the all-in-one scheme, and the processor of operation system and rear end chip for driving all are to begin power supply simultaneously, as shown in Figure 1.Because the os starting time of some scheme is grown (reaching more than 15 seconds), can bring following problem like this: after television set was connected with the mains, colored picture tube produced high pressure, and operating system begins to start simultaneously.A flow process according to such will produce the sound of hearing that earlier high pressure powers on, the defective that enters normal holding state again through TV after tens seconds.In addition; when whole system has not started; not not in normal operation; the line synchronizing signal that is input to the rear end chip for driving might depart from normal range (NR); the horizontal-drive signal of rear end chip for driving output also can depart from normal range (NR); cause the blasting or the underexcitation phenomenon of line pipe, cause the burning line pipe, or the too high protective circuit problem such as delay work that makes of high pressure.
Summary of the invention
The technical problem to be solved in the present invention is, light behind the picture tube waits for too long and may occur that line pipe is crossed or underexcitation defective at prior art above-mentioned, provide a kind of and when waiting for booting operating system, do not light picture tube and also can not cross or underexcitation digital/analog integrated television set and rear end power supply method thereof because of booting operating system causes line pipe.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of digital/analog integrated television set, comprise power supply, front end system and rear end drive circuit, described front end system comprises host CPU and is connected on the power supply, also comprise control assembly, the first input end of described control assembly is connected the output of described power supply, its first output is connected described rear end drive circuit power input, its second input is connected to front end system, described controllable components makes its first input end and the first output short circuit after front end system is finished system's normal boot, when front end system is finished system's guiding its first input end and first output are disconnected.
In digital/analog integrated television set of the present invention, described control assembly second input is connected on the bus of described front end system host CPU or the host CPU on the boot flag output pin.
In digital/analog integrated television set of the present invention, described bus comprises IIC or spi bus.
In digital/analog integrated television set of the present invention, described control assembly comprises monitoring device and gate-controlled switch, the input of described monitoring device is connected described second input, its output is connected with the control end of described gate-controlled switch, and described gate-controlled switch two ends link to each other with described rear end drive circuit power input with described power output end respectively.
In digital/analog integrated television set of the present invention, described monitoring device comprises and is positioned at the functional module on the described front end system host CPU or is independent of independent CPU or programmable logic device or aforementioned independent CPU or the functional module on the programmable logic device on the described host CPU.
In digital/analog integrated television set of the present invention, described gate-controlled switch comprises relay or metal-oxide-semiconductor or transistor.
The invention still further relates to the method for a kind of digital/analog integrated television set rear end power supply, comprise the steps:
A) front end system, control assembly power on;
B) monitoring device begins to read the data of expression front end system boot progress;
C) checkout gear data that relatively read and the data of depositing in advance;
D) monitoring device outputs a control signal to gate-controlled switch;
E) gate-controlled switch action, the first input end and first output of connection control assembly are started working the rear end drive circuit.
In the method for digital/analog integrated television set of the present invention rear end power supply, described step b) further comprises by reading boot flag output pin level on guiding complement mark position in the host CPU register or the host CPU monitors the bootup process of front end system.
In the method for digital/analog integrated television set of the present invention rear end power supply, described step c) comprises that further the bootup process of judgement front end system is finished when monitoring described guiding complement mark position or boot flag output pin level when equaling preset value.
In the method for digital/analog integrated television set of the present invention rear end power supply, in the described step c), the control signal of monitoring device output is a continuous high level signal.
Implement digital/analog integrated television set of the present invention and rear end power supply method thereof, has following beneficial effect: owing to adopt the method for front end system and rear end drive circuit being separated power supply, the rear end drive circuit was not worked before front end system is finished guiding, light behind the picture tube waits for too long and may occur that line pipe is crossed or underexcitation defective thereby solved.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is a digital/analog integrated television set prior art constructions schematic diagram;
Fig. 2 is the structural representation of digital/analog integrated television set of the present invention and rear end power supply method embodiment thereof;
Fig. 3 is digital/analog integrated television set of the present invention and rear end power supply method embodiment flow chart thereof.
Embodiment
As shown in Figure 2, in digital/analog integrated television set of the present invention and rear end power supply method embodiment thereof, compare with prior art shown in Figure 1, between power supply and rear end drive circuit, increased a control assembly (the frame of broken lines part among Fig. 2), described control assembly comprises first input end, first output and second input, wherein, first input end is connected to the output of power supply, first output is connected to the power input of rear end drive circuit, and second input is connected on the host CPU of front end system; In the present embodiment, control assembly comprises monitoring device and gate-controlled switch, described monitoring device input is connected on above-mentioned second input, and its output is connected on the control end of described gate-controlled switch, and promptly the output signal of monitoring device is as the control signal of gate-controlled switch; Two switch terminals of gate-controlled switch are connected on the above-mentioned first input end and first output, and described gate-controlled switch is open-circuit condition when not receiving control signal; Above-mentioned second input of control assembly is connected on the special output pin of host CPU, in the present embodiment, this output pin is defined as when host CPU is finished guiding, this output pin can be exported a pulse that continues for some time, be the boot flag output pin. like this, the output that originally was directly connected to the rear end drive circuit on the power supply just directly is not connected on the drive circuit of rear end, but be connected on the first input end of control assembly, the power input that originally was directly connected to the rear end drive circuit of power supply directly is not connected on the power supply yet, but is connected on first output of control assembly.
When power supply began to power, front end system and above-mentioned control assembly were started working, and the rear end drive circuit is not owing to there is the power supply supply this moment, do not work yet, just television set not row, field scan drive signal occur, naturally also just not row, export, picture tube is not lighted.Because front end system powers on, so front end system begins to reset, and the guiding of beginning operating system, and this moment, the monitoring device of control assembly begins to monitor the state of described boot flag output pin, and with predefined value relatively, when monitoring device finds that the state identical with set point appears in the state of boot flag output pin, be judged as host CPU and finish guiding, so by the control end of control signal of its output output to gate-controlled switch, in the present embodiment, this control signal is a lasting high level; Gate-controlled switch is closed under the effect of above-mentioned control signal, and the first input end and the first output short circuit with control assembly make the power input of rear end drive circuit be connected with power supply, so, the rear end drive circuit is started working, and row, field scan occur, and picture tube is lighted.Because front end system guided and finished this moment, and each peripheral assembly disposed and finished, and lights behind the picture tube waits for too long and may occur that line pipe is crossed or underexcitation defective so avoided of the prior art fully.
In the present embodiment, described monitoring device is an external CPU, and in the present embodiment, independent boot flag output pin is arranged on the host CPU, and gate-controlled switch is a transistor.And when practical application, because the diversity of embedded system, in the face of different host CPUs, can take multiple different implementation method, for example under the situation of permission in the cpu resource, monitoring device can be designed to be arranged in functional module of host CPU or with the part of programmable logic device or programmable logic device as monitoring device; When host CPU does not have independent boot flag output pin, can make iic bus or the spi bus etc. of monitoring device by host CPU remove to read the flag bit of the guiding of the expression in the register in the host CPU, judge whether front end system finishes the purpose of guiding thereby reach; As for gate-controlled switch, also can use relay, metal-oxide-semiconductor etc.; In the above-mentioned example, as long as change correspondent peripheral circuit and relative set make its operate as normal, these all belong to general knowledge well known to those skilled in the art, do not repeat them here.
As shown in Figure 3, the invention also discloses a kind of method of in digital/analog integratedization television set, powering, comprise the steps: for the rear end
A) power on: the power supply of digital/analog integratedization television set is started working, and for front end system and control assembly provide work required power supply, after this, front end system resets and begins to guide embedded OS;
B) monitoring device reading of data: the data that read out expression front end system boot progress in the host CPU of the monitoring device in the control assembly by front end system; What as previously mentioned in the present embodiment, monitoring device read is the level and the duration thereof of boot flag output pin on the host CPU;
C) monitoring device is compared the data that read with default data, as equating, then enters step d), as inequality, then returns step b);
D) monitoring device produces and the output control signal: after monitoring device judges that host CPU is finished guiding, according to setting in advance, produce a particular level signal (height of this level is relevant with the gate-controlled switch of use) that continues, and output to the control end of gate-controlled switch, what in the present embodiment, checkout gear produced is a lasting high level signal;
E) gate-controlled switch action, be the rear end drive circuitry: when above-mentioned control signal acted on gate-controlled switch, gate-controlled switch became closure by original open circuit, energized and rear end drive circuit power input, make the rear end drive circuit obtain power supply and supply with, start working.
At above-mentioned steps b) in, monitoring assembly institute data monitored is different and different with concrete condition (embodiment), but its basic point is identical, be that data monitored must be the operating state that can reflect host CPU, for example, in other embodiments, monitoring device can be the level and the duration thereof of the above-mentioned boot flag output pin of directly monitoring, bus interface monitoring that also may be by host CPU be some specified registers in the register on the host CPU, they can reflect the operating state of host CPU, for example, the flag bit of expression guiding.Certainly, the data difference that reads, the method of attachment of the method for monitoring device reading of data, monitoring device and host CPU and to preestablish the data that are used for comparison also inequality, but these concrete methods also belong to those skilled in the art's conventional means, also repeat no more at this.
Claims (10)
1. digital/analog integrated television set, comprise power supply, front end system and rear end drive circuit, described front end system comprises host CPU and is connected on the power supply, it is characterized in that, also comprise control assembly, the first input end of described control assembly is connected the output of described power supply, its first output is connected described rear end drive circuit power input, its second input is connected to front end system, described control assembly makes its first input end and the first output short circuit after front end system is finished system's normal boot, when front end system is finished system's guiding its first input end and first output are disconnected.
2. digital/analog integrated television set according to claim 1 is characterized in that, described control assembly second input is connected on the boot flag output pin of the bus of described front end system host CPU or host CPU.
3. digital/analog integrated television set according to claim 2 is characterized in that described bus comprises IIC or spi bus.
4. digital/analog integrated television set according to claim 3, it is characterized in that, described control assembly comprises monitoring device and gate-controlled switch, the input of described monitoring device is connected described second input, its output is connected with the control end of described gate-controlled switch, described gate-controlled switch two ends link to each other with described rear end drive circuit power input with described power output end respectively, and two switch terminals of gate-controlled switch are connected on the described first input end and first output.
5. digital/analog integrated television set according to claim 4, it is characterized in that described monitoring device comprises and is positioned at the functional module on the described front end system host CPU or is independent of independent CPU or programmable logic device or aforementioned independent CPU or the functional module on the programmable logic device on the described host CPU.
6. digital/analog integrated television set according to claim 5 is characterized in that, described gate-controlled switch comprises relay or metal-oxide-semiconductor or transistor.
7. the method for a digital/analog integrated television set as claimed in claim 1 rear end power supply is characterized in that, comprises the steps:
A) front end system, control assembly power on;
B) monitoring device begins to read the data of expression front end system boot progress;
C) monitoring device data that relatively read and the data of depositing in advance;
D) monitoring device outputs a control signal to gate-controlled switch;
E) gate-controlled switch action, the first input end and first output of connection control assembly are started working the rear end drive circuit.
8. the method for digital/analog integrated television set according to claim 7 rear end power supply, it is characterized in that described step b) further comprises by reading in the host CPU register boot flag output pin level on guiding complement mark position or the host CPU monitors the bootup process of front end system.
9. the method for digital/analog integrated television set according to claim 8 rear end power supply, it is characterized in that, described step c) further comprises when monitoring described guiding complement mark position or boot flag output pin level when equaling preset value, judges that the bootup process of front end system is finished.
10. the method for digital/analog integrated television set according to claim 9 rear end power supply is characterized in that, in the described step c), the control signal of monitoring device output is a continuous high level signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610063068A CN101163217B (en) | 2006-10-10 | 2006-10-10 | Digital/analog integrated television set and rear end power supply method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610063068A CN101163217B (en) | 2006-10-10 | 2006-10-10 | Digital/analog integrated television set and rear end power supply method thereof |
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| Publication Number | Publication Date |
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| CN101163217A CN101163217A (en) | 2008-04-16 |
| CN101163217B true CN101163217B (en) | 2010-05-12 |
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| CN200610063068A Expired - Fee Related CN101163217B (en) | 2006-10-10 | 2006-10-10 | Digital/analog integrated television set and rear end power supply method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1345416A1 (en) * | 2002-03-14 | 2003-09-17 | Sony Service Center (Europe) N.V. | Method and digital television unit for operating broadcast applications |
| CN1533165A (en) * | 2003-03-25 | 2004-09-29 | 乐金电子（沈阳）有限公司 | Power on sequence method of plasma TV set |
| CN1564583A (en) * | 2004-03-15 | 2005-01-12 | 四川长虹电器股份有限公司 | Protection circuit of TV |
| CN1671192A (en) * | 2005-03-31 | 2005-09-21 | 四川长虹电器股份有限公司 | Double-processor TV control method and use thereof |
| CN1729686A (en) * | 2002-12-21 | 2006-02-01 | 皇家飞利浦电子股份有限公司 | Power management in appliances |
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2006
- 2006-10-10 CN CN200610063068A patent/CN101163217B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1345416A1 (en) * | 2002-03-14 | 2003-09-17 | Sony Service Center (Europe) N.V. | Method and digital television unit for operating broadcast applications |
| CN1729686A (en) * | 2002-12-21 | 2006-02-01 | 皇家飞利浦电子股份有限公司 | Power management in appliances |
| CN1533165A (en) * | 2003-03-25 | 2004-09-29 | 乐金电子（沈阳）有限公司 | Power on sequence method of plasma TV set |
| CN1564583A (en) * | 2004-03-15 | 2005-01-12 | 四川长虹电器股份有限公司 | Protection circuit of TV |
| CN1671192A (en) * | 2005-03-31 | 2005-09-21 | 四川长虹电器股份有限公司 | Double-processor TV control method and use thereof |
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| CN101163217A (en) | 2008-04-16 |
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