CN1599452A - Digital TV. and its driving method - Google Patents
Digital TV. and its driving method Download PDFInfo
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- CN1599452A CN1599452A CNA031340210A CN03134021A CN1599452A CN 1599452 A CN1599452 A CN 1599452A CN A031340210 A CNA031340210 A CN A031340210A CN 03134021 A CN03134021 A CN 03134021A CN 1599452 A CN1599452 A CN 1599452A
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- digital television
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- 230000002159 abnormal effect Effects 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 5
- 238000012360 testing method Methods 0.000 claims abstract description 4
- 238000012546 transfer Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 5
- 230000000737 periodic effect Effects 0.000 claims description 4
- 238000003556 assay Methods 0.000 claims description 3
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Abstract
This invention relates to a method for carrying out independent control to the digital TV receiving part when restarting the system due to the abnormal state of the operation system. This invented TV is set with a digital TV receiving part receiving broadcast data stream from outside, processing decodes according to image, then to output digital broadcast to the audiences, a master CPU and sub CPU for providing convenient operation system and an adhesive logic part testing the operation system periodically and transferring the control power to the receive part to the master CPU, if the result state is normal, or to the sub CPU if the state is abnormal. When the operation system is abnormal, it also controls the receive part independently.
Description
Technical field
The present invention will be referred to Digital Television (DTV) receiving system.Even if when especially will be referred to a moving body that is used and being made as abnormal condition, Digital Television and driving method thereof that also can audiovisual Digital Television very naturally.
Background technology
Operating system) or Linux etc. Web case (web box) and Internet television product, as the application program of operation system, for general user's convenience, major part is all used OS (Operrating system:.
But if the operation system becomes labile state, can only restart so can; If restart the operation system, so just can't use employed all application programs in current system.
In order to address this problem, former Digital Television acceptance division is all in the high built-in operation system of stability in use, to improve reliability.But the shortcoming of this built-in operation system is to provide familiar a kind of operation system UI (User Interface: user interface) to the user.
And built-in operation system is that the function that allows it possess a kind of indispensability is very difficult as the digital household appliances product of web browser etc.
In addition, in order to address these problems, many enterprises are developing to have as WINDOW or Linux operation system, based on the digital TV products of personal computer.But, in the time of on the operation system, putting multiple application software, can make the reliability of operation system become a problem.
That is to say that if because restarting of operation system goes wrong, lost its meaning so as the product of Digital Television in the control of Digital Television acceptance division, this is a big problem.
For this reason, need when the operation system become under the abnormal condition also can the audiovisual Digital Television a kind of structure.
The sort of operation system as Microsoft's operation system, to compare with built-in (embedded) operation system, the situation of restarting systems can be more, if therefore make its acceptance division that can remove the control figure TV during restarting the operation system, the user just can come the audiovisual Digital Television very naturally so.
Summary of the invention
The present invention develops in order to address the above problem.The objective of the invention is in the Digital Television acceptance division that possesses the operation system, when needing restarting systems, just allow the Digital Television acceptance division go independently to control owing to the abnormal condition of moving system.
Another object of the present invention is by communicating by letter between operation system and the Digital Television acceptance division, comes to operation system and Digital Television acceptance division reception and registration control.
The purpose of Digital Television of the present invention is achieved in that its architectural feature is, that is: be provided with one and decipher according to image processing from outside reception broadcast data stream, exports the Digital Television acceptance division of digital broadcasting then to spectators; Be provided with one when using the Digital Television acceptance division, be used for controlling the host CPU and the local CPU of the operation system of providing convenience; Be provided with one to the operation system periodically check, wherein, if the result of check is a normal condition, control with the Digital Television acceptance division transfers host CPU so, if assay is an abnormal condition, so the control of Digital Television acceptance division is transferred the stickup logic section of Local C PU.
At this moment, Local C PU and paste logic section and preferably coexist and form in the Digital Television acceptance division by local bus one; And host CPU preferably constitutes PLD (programmable logic device) by pci bus in the outside of Digital Television acceptance division.
Also having a feature is to be provided with a PCI bridger that plays the interface effect between host CPU and Digital Television acceptance division.
It is to paste logic section in order to grasp the state of operation system that a feature is arranged again, and constituting one can common approaching marker field by host CPU and local CPU.
To achieve the above object and the exploitation the present invention, the feature that is the Digital Television driving method is, broadcast data stream from antenna/cable/satellite input is carried out tuning and demodulation, then the mpeg stream that is transformed into numerical data is deciphered, and the operation system of removing to operate host CPU again, its driving method of Digital Television that outputs to the display of Digital Television will be made of following several stages, that is: be provided with a stage of mpeg stream not deciphered and directly transport stream or the PES/PS stream that will transmit transport stream being deposited in memory; Be provided with one according to user's requirement the broadcast data stream of storage is deciphered after, to the stage that the display of Digital Television is exported; Be provided with one by the operation system state of Local C PU, carry out periodic testing stage host CPU; Be judged as abnormal condition if also be provided with a state that moves system as the result of check, so the control of Digital Television acceptance division transferred the possession of the stage of Local C PU from host CPU.
At this moment, periodic checkout procedure will be made of following several stages feature, that is: be provided with one field that can common access by the operation system of the operation system drawn game CPU of portion of host CPU carried out periodically near the stage; Be provided with one by the application program of Local C PU, the field of common access carried out the stage of periodically testing near situation to the operation system of host CPU; Do not carry out above approaching of stipulated time if be provided with the result of a check, the moving body that will go so to judge host CPU is made as abnormal condition, and with the control of Digital Television acceptance division to stage that Local C PU transfers the possession of.
Also having a feature is to be made of following several stages, transfers to Local C PU (400) if that is: be provided with a control, so the stage of being handled by Local C PU reception user's input; Be provided with a stage of the operation system state of host CPU being carried out periodic survey by Local C PU; If be provided with the result of a check, the operation system state of host CPU is judged as normally, so will be by Local C PU to stage that host CPU is transferred the possession of with the control of Digital Television acceptance division.
The effect of feature of the present invention is Digital Television acceptance division when itself having independently ability to work, also will be under the jurisdiction of under the control of moving system; If in a single day the operation system becomes abnormal condition, so its situation is announced the Digital Television acceptance division immediately, the Digital Television acceptance division can oneself be controlled, the structure that designs Digital Television like this solves problem.
Other purposes of the present invention, characteristic and advantage are will be in conjunction with the drawings clear to the example Shi Genghui that is elaborated.
The invention has the advantages that:, also can remove the acceptance division of control figure TV independently, thereby have the effect that can make user's audiovisual Digital Television normally when the operation system is under the situation of abnormal condition.
By above-mentioned explanation,, in not breaking away from technological thought scope of the present invention, can carry out various changes and revision if the professional can know.
Below, the example to Digital Television of the present invention and driving method thereof describes with reference to the accompanying drawings.Technical scope of the present invention with the content that is not limited in the example to be put down in writing, but should define according to the claim of patent.
Description of drawings
Fig. 1 is Digital Television structure in general figure of the present invention.
Fig. 2 is the detailed structure view of Digital Television of the present invention.
Fig. 3 is the software hierarchy chart of operation system of the present invention.
Fig. 4 is shown specifically the accompanying drawing of pasting logic section in Digital Television structure of the present invention.
The symbol description ※ of ※ accompanying drawing major part
(100): Digital Television acceptance division (110): tuner
(120): demodulator (130): MPEG decoder
(140): display (200): paste logic section
(300): host CPU (400): Local C PU
500:HDD (hard disk drive) (600): PCI (Protocol Control Information) bridger
Embodiment
As shown in Figure 1, it is made of following several sections, that is: be provided with from outside reception broadcast data stream, and decipher by image processing process, exports the Digital Television acceptance division (100) of digital broadcasting then to spectators; Be provided with when using Digital Television acceptance division (100), be used for controlling the host CPU (300) and the local CPU (400) of the operation system of providing convenience; Be provided with one to the operation system periodically check, the control with Digital Television acceptance division (100) is transferred to stickup logic section (200) some among host CPU (300) or the Local C PU (400) then.
Fig. 2 is the detailed structure view of Digital Television of the present invention.
As shown in Figure 2, Digital Television acceptance division (100) is made of following several sections, that is: be provided with the mpeg stream by the input of exterior antenna/cable/satellite to be carried out tuning, and detects the tuner (110) of the broadcast data stream of special frequency band; Be provided with demodulation from the broadcast data stream that tuner (110) detects, make its demodulator that is transformed into numerical data (120); Be provided with the MPEG decoder of being deciphered by the TP of demodulation (transport stream) data in demodulator (120) (130); Also be provided with the digital television display (140) that HD (high definition) vision signal decoded in MPEG decoder (130) is shown.
At this moment, Local C PU (400) and paste logic section (200) and be formed on together among the Digital Television acceptance division (100) by local bus; Host CPU (300) and HDD (500) then form PLD by pci bus in the outside of Digital Television acceptance division (100).
Host CPU (300) will will go to fulfil interface effect with Digital Television acceptance division (100) by PCI bridger (600).
Below, to the course of work of Digital Television of the present invention, be elaborated with reference to the accompanying drawings with this structure.
At first, received from the broadcast data stream of antenna cable satellite input by tuner (110), the mpeg stream that is transformed into numerical data then in demodulator (120) is input to MPEG decoder (130).MPEG decoder (130) will output to digital television display (140) after will deciphering the mpeg stream of input so, for spectators' audiovisual digital broadcasting.
At this moment, MPEG decoder (130) will not deciphered the mpeg stream from demodulator input, and directly the transport stream or the PES/PS that will transmit transport stream be flowed, and deposit HDD500 in by main interface and via PCI bridger (600).
Then, requirement according to the user, read the broadcast data stream that deposits at HDD500 by PCI bridger (600), and the PCI bridger (600) by Digital Television acceptance division (100) gets back to MPEG decoder (130) and decipher, output to digital television display (140) then.
At this moment, paste logic section (200) have can common access by the operation system of the operation system drawn game CPU of portion (400) of host CPU (300) the field, and mutually with periodically near this field, the state information of exchange operation system whereby.
When exchange state information, if Digital Television acceptance division (100) by host CPU (300) with normal condition in the application program of fulfiling the operation system, Digital Television acceptance division (100) will utilize pci interface to be connected to system's pci bus to carry out work so.
And, in host CPU (300), carry out the moving body processing procedure preface of work and will go to control figure television reception portion (100).
At this moment, the control program of the Digital Television acceptance division of being controlled by host CPU (300) (100) is actually and finishes by moving body control equipment driver and operation system application program.
In addition, pci interface can be suitable for other PC bus interface as ISA etc.
Fig. 3 is operation system software layer of the present invention time figure.
As shown in Figure 3, this level constitutes by following several, is provided with an input that will receive the user that is:, then the APD of transmitting an order to the middleware (middleware) of lower software layer time; Be provided with one and after APD receives order, will pass to the device driver layer under the part directly related, and the intermediary device portion that generates form is afterwards analyzed and collected to the information relevant with the channel information radio program with device; Be provided with the device drive portion of direct control and Digital Television related device; Also be provided with an operation system portion that is used for being responsible for the operation whole procedure.
, also set up one here, can only remove the Hardware Subdivision of the Digital Television acceptance division of control figure television reception portion independently by the Local C PU (400) in the Digital Television acceptance division.
In addition, when exchange state information, if in Digital Television acceptance division (100), carry out the application program of operation system, so as shown in Figure 3, can't form one by of the control of operation system with the acceptance division of program level logarithm word TV with abnormal condition.
And, paste logic section (200) after the operation system of host CPU (300) receives control, will be used for the firmware (firmware) of control figure television reception portion, the operation system of giving Local C PU (400).
Here, feature and the kind of Local C PU (400) will be possible different according to the technical indicator of digital television devices; For control figure television reception portion, the program of fulfiling in Local C PU (400) also may be firmware (firmware) form, also may be the program that is adapted to built-in operation system.
As mentioned above, if moving body is made as abnormal condition, in order to transfer the possession of control, as shown in Figure 4, should guarantee in pasting logic section (200) that the operation system application program of Local C PU (400) and host CPU (300) can common approaching marker field so to Local C PU (400).
And usually host CPU (300) will utilize memory-mapped io near Digital Television acceptance division (100), and it is just passable therefore this field to be made the field of storage that Local C PU (400) also can be approaching.
Then, as shown in Figure 4, in the PLD that guides Local C PU (400) and local device to use, guarantee the field.
At this moment, field that can be simultaneously approaching can be without PLD, and also can realize with other method.For example, also can in the memory area of local device (MPEG decoder, PCI bridger), guarantee.
In the memory area of guaranteeing like this, when host CPU (300) operate as normal, carry out periodically approaching the time, go to fulfil the application program of operation system.
Meanwhile, the firmware of carrying out in Local C PU (400) will go near can simultaneously approaching field, and go check operation system application program whether periodically carry out approaching.If the operation system application program of assay host CPU (300) is not done sometime above approaching, the operation system that to judge host CPU (300) so is in abnormal condition, only in Local C PU (400), carry out firmware program to digital television reception portion, the control of going to receiving digital television acceptance division (100) by pasting logic section (200).
As mentioned above, if the operation system enters abnormal condition, control is transferred to Local C PU (400) by host CPU (300), and Local C PU (400) input that will go to receive the user is handled so.
In addition, be used for the program of channel visit (navigation) also to drive, also can make Digital Television carry out work even if the operation system is in abnormal condition by Local C PU (400).
The operation system of host CPU (300) is under the situation of abnormal condition, during restarting, the control of Digital Television acceptance division is transferred to Local C PU (400) by host CPU (300), and in the process by the input of Local C PU (400) process user, transfer normal condition to if finish restart procedure, the control of Digital Television acceptance division will be transferred to host CPU (300) by Local C PU (400) more so.So, handle by host CPU (300) reception user's input again.
Claims (6)
1, a kind of Digital Television is characterized in that:
Be provided with one and accept broadcast data stream, decipher, export the Digital Television acceptance division of digital broadcasting then to spectators according to image processing from the outside;
Be provided with one when using the Digital Television acceptance division, be used for controlling the host CPU and the local CPU of the operation system of providing convenience;
Be provided with one to the operation system periodically check, wherein, if the result of check is a normal condition, control with the Digital Television acceptance division transfers host CPU so, if assay is an abnormal condition, so the control of Digital Television acceptance division is transferred the stickup logic section of Local C PU.
2, Digital Television according to claim 1 is characterized in that:
Local C PU and paste logic section and coexist by local bus one and form in the Digital Television acceptance division; And host CPU constitutes programmable logic device PLD by pci bus in the outside of Digital Television acceptance division.
3, Digital Television according to claim 1 is characterized in that: be provided with a PCI bridger that plays the interface effect between host CPU and Digital Television acceptance division.
4, Digital Television according to claim 1 is characterized in that:
Paste logic section in order to grasp the state of operation system, constituting one can common approaching marker field by host CPU and local CPU.
5, a kind of driving method of Digital Television, it comprises carries out tuning and demodulation to the broadcast data stream from antenna/cable/satellite input, then the mpeg stream that is transformed into numerical data is deciphered, and the operation system of removing to operate host CPU again, with its display that outputs to Digital Television, it is characterized in that:
Be provided with a stage of mpeg stream not deciphered and directly transport stream or the PES/PS stream that will transmit transport stream being deposited in memory;
Be provided with one according to user's requirement the broadcast data stream of storage is deciphered after, to the stage that the display of Digital Television is exported;
Be provided with one by the operation system state of Local C PU, carry out periodic testing stage host CPU;
Be judged as abnormal condition if also be provided with a state that moves system as the result of check, so the control of Digital Television acceptance division transferred the possession of the stage of Local C PU from host CPU.
6, driving method according to claim 5 is characterized in that:
Being provided with one carries out periodically near the stage field that can common access by the operation system of the operation system drawn game CPU of portion of host CPU;
Be provided with one by the application program of Local C PU, whether the stage that periodicity is tested near situation carried out in the field of common access the operation system of host CPU;
Do not carry out above approaching of stipulated time if be provided with the result of a check, will judge that so the moving body of host CPU is made as abnormal condition, and with the control of Digital Television acceptance division to stage that Local C PU transfers the possession of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031340210A CN1599452A (en) | 2003-09-19 | 2003-09-19 | Digital TV. and its driving method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031340210A CN1599452A (en) | 2003-09-19 | 2003-09-19 | Digital TV. and its driving method |
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| Publication Number | Publication Date |
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| CN1599452A true CN1599452A (en) | 2005-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA031340210A Pending CN1599452A (en) | 2003-09-19 | 2003-09-19 | Digital TV. and its driving method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102754451A (en) * | 2010-02-10 | 2012-10-24 | 松下电器产业株式会社 | Controller, control method for controller, and digital broadcast receiving apparatus |
-
2003
- 2003-09-19 CN CNA031340210A patent/CN1599452A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102754451A (en) * | 2010-02-10 | 2012-10-24 | 松下电器产业株式会社 | Controller, control method for controller, and digital broadcast receiving apparatus |
| US8935521B2 (en) | 2010-02-10 | 2015-01-13 | Panasonic Corporation | Control apparatus, method of controlling control apparatus, and digital broadcast receiving apparatus |
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