CN108513169A - A kind of chip downloads method, chip and the LCD TV of startup program - Google Patents
A kind of chip downloads method, chip and the LCD TV of startup program Download PDFInfo
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- CN108513169A CN108513169A CN201810298965.1A CN201810298965A CN108513169A CN 108513169 A CN108513169 A CN 108513169A CN 201810298965 A CN201810298965 A CN 201810298965A CN 108513169 A CN108513169 A CN 108513169A
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- Prior art keywords
- chip
- startup program
- download
- downloads
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
- H04N21/4432—Powering on the client, e.g. bootstrap loading using setup parameters being stored locally or received from the server
Abstract
The embodiment of the present application discloses a kind of method, chip and the LCD TV of chip download startup program, including：Determine the download mark in chip startup program to be downloaded, it is described to download the last byte for identifying and being arranged in the chip startup program；Download the chip startup program；According to the testing result for downloading mark, the download of the chip startup program is controlled.The last byte for identifying and being arranged in chip startup program is downloaded, as the information of fruit chip startup program failed download, the last byte will not then detect.Correspondingly, chip is not before completing download chip startup program, chip can not start, therefore register value will not change.If detecting that the register value for downloading mark or monitoring does not change.Then chip startup program is re-downloaded, the problem of to prevent chip startup program failed download.
Description
Technical field
This application involves chip download technology field more particularly to a kind of chip download the method for startup program, chip and
LCD TV.
Background technology
TCON (Timing Controler, sequence controller) plate is a kind of liquid crystal display panel being widely used in LCD TV
Driving plate, the main function of TCON plates are that liquid crystal television mainboard is sent viewdata signal (comprising rGB data signal, clock
Signal and control signal three classes signal) after processing, it is converted into that the data-signal of liquid crystal display can be driven, then be routed directly to liquid crystal display
SCOF IC.The chip with image processing function is provided on TCON plates, when LCD TV is switched on after the power is turned on, on TCON plates
Chip needs to download startup program from the ROM in inside liquid crystal television processor, and chip is completed according to the startup program of download
It is normal to start.
Due on TCON plates chip and ROM be located at different regions, it is therefore desirable to establish communication between the two, just may be used
To realize the normal download of chip startup program.As shown in Figure 1, TCON IC chips and ROM are arranged on pcb board, TCON
SPI (Serial Peripheral Interface, Serial Peripheral Interface (SPI)) module is provided in IC chip, SPI and ROM is established
It connects, electronic circuit is provided on pcb board, electronic circuit downloads startup program from ROM for inside chip and provides hardware corridor.
After system electrification, chip sends out startup program download request to ROM by SPI modules and passes through after ROM receives download request
Corresponding startup program is sent to chip by the electronic circuit being arranged on pcb board, and then completes the download of startup program.
But there may be design defect or cabling to design the factors such as bad for pcb board electronic circuit, to which core can be caused
Piece downloads initiator procedure leads to failed download extremely.Such as the ideal line width 1-3mm of pcb board electronic circuit, line impedance
40m Ω can complete the normal download of startup program under the above parameters.Since the electronic circuit line width of actual design designs only
For 0.5mm, and then line impedance is caused to increase to 100m Ω, to cause the SPI electricity shortages of chip, when SPI module ends supply
When electric insufficient, the logic circuit delays of chip interior increase, and cannot be satisfied the requirement that chip downloads the startup program retention time, into
And chip startup program failed download is caused, cause system boot that cannot normally start.
Invention content
This application provides method, chip and LCD TVs that a kind of chip downloads startup program, to solve traditional technology
Chips download the problem of chip startup program unsuccessfully causes system boot that cannot normally start.
In order to solve the above-mentioned technical problem, the embodiment of the present application discloses following technical solution：
In a first aspect, the embodiment of the present application provides a kind of method that chip downloads startup program, including：It determines to be downloaded
Download mark in chip startup program, it is described to download the last byte for identifying and being arranged in the chip startup program；Under
Carry the chip startup program；According to the testing result for downloading mark, the download of the chip startup program is controlled.It downloads
The last byte in chip startup program is arranged in mark, such as fruit chip startup program failed download, the information of the last byte
It will not then detect.Chip startup program is re-downloaded if being not detected and downloading mark, to prevent chip to start
The problem of program failed download.
Second aspect, the embodiment of the present application provide a kind of chip, including：Processor；Memory, under storage chip
The chip startup program of load；Processor executes the method that chip downloads startup program.Processor in chip carries under the die to be opened
The download mark in the last byte of chip startup program is not detected in dynamic program, then shows that chip is downloaded under startup program
Failure is carried, to which control re-downloads chip startup program, it is therefore prevented that the problem of chip startup program failed download, ensure core
Piece can normally start.
The third aspect, the embodiment of the present application provide a kind of LCD TV, including：Equipment TV peripheral hardware；TCON plates, TCON
Plate is built in TV motherboard；Chip, chip are arranged on TCON plates；After starting LCD TV, the processor of chip powers on, and leads to
SPI and the ROM foundation for crossing chip communicate, and execute the method that chip downloads startup program, control the download of chip startup program.
Television startup after the power is turned on, start to work by the TCON plates in TV motherboard, and the chip being arranged on TCON plates downloads chip and starts journey
Sequence, so that TV enters normal work, chip after the power is turned on, is identified according to the download in detection chip startup program to control pair
The download of chip startup program, and then ensure that chip startup program is downloaded successfully, the operation of LCD TV normal boot-strap.
Description of the drawings
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other drawings may also be obtained based on these drawings.
Fig. 1 is that TCON plates communicate the schematic diagram for downloading chip startup program with ROM in the prior art；
Fig. 2 is the flow diagram for the method that a kind of chip provided by the present application downloads startup program；
Fig. 3 is a kind of structural schematic diagram of chip startup program provided by the present application；
Fig. 4 is a kind of structural schematic diagram of chip provided by the present application；
Fig. 5 is a kind of structural schematic diagram of LCD TV provided by the present application.
Specific implementation mode
The application is described in detail below in conjunction with the accompanying drawings.
As shown in Fig. 2, for a kind of flow diagram of the method for chip download startup program provided by the present application, such as Fig. 2
Shown, a kind of embodiment that the method for startup program is downloaded for chip provided by the present application includes：
S101 determines the download mark in chip startup program to be downloaded.
After system electrification, chip needs corresponding chip startup program that can just complete to start, into normal operating conditions,
Realize the normal function of chip.Due to the limited storage space of chip interior, before chip is not actuated, chip startup program
Be typically stored in ROM, chip startup program as shown in Figure 3 be one section include multiple field informations program code, including
Field head, function field and the field tail of program, the chip startup program in the application are set in the last byte of field tail
Identification information is equipped with to identify as download.
Before chip downloads chip startup program, the information for obtaining chip startup program to be downloaded is sent to ROM first
Request, such as the download of the field length information of acquisition request chip startup program and field tail the last byte identify.ROM
After receiving the solicited message that chip sends over, corresponding chip startup program is obtained according to chip type, then by core
The corresponding length information of piece startup program and the download identification information of carrying are sent to chip.Chip receive ROM beam back it is anti-
After feedforward information, starts request and download chip startup program.
S102 downloads chip startup program.
Chip start request download startup program after, ROM receives the program download request that chip is sent, then will under
It carries and corresponding chip startup program is asked to be sent to chip.Since chip startup program is one section of functional program, under needing
The time is carried, cannot achieve moment download, therefore in entire downloading process, chip can be detected according to preset detection time interval
Download mark.
S103 controls the download of chip startup program according to the testing result for downloading mark.
It can be detected according to prefixed time interval in S102 chips and download mark, judge that chip starts according to the result of detection
Whether program has successfully been downloaded.If detecting the download mark in chip startup program in downloading process, illustrate
The download of chip startup program finishes.Since chip startup cannot be waited for for a long time, if postponed by prolonged, chip
Still not actuated, then corresponding equipment also can not normally start, and for user level, then can influence user experience.
Therefore a preset time period can be set in the present embodiment, if within a preset period of time, not detecting download
Mark, at this time chip startup program may also in download, since the time of download has exceeded normal download time,
Current download can be then terminated, is retransmitted to ROM and downloads request, re-download startup program.
For example, it is 500ms that historical record chips longest, which starts the time, then preset time period is set to 500ms.If
In 500ms, does not detect the download mark in chip startup program or the identification information detected and download mark not
Meanwhile chip startup program may be downloaded and mistake occurs at this time, including failed download or delay is downloaded, it needs to terminate at this time current
Operation, again to ROM transmission re-download request.
In an exemplary embodiment, chip startup program is provided with a marker bit, and above-mentioned marker bit carries under the die
Startup program can change after the completion of downloading, and the marker bit after changing is set as target identification.If when default
Between to detect that marker bit downloads mark in section different from target identification, can directly judge chip startup program failed download,
It needs to retransmit to ROM at this time and downloads request, re-download startup program.
For example, the marker bit that chip startup program does not download the moment is 0, marker bit can become 1 after downloading successfully.Then will
It downloads the marker bit information detected in chip startup program to be defined as downloading mark, marker bit information defines after downloading successfully
For target identification.If within a preset period of time, it is assumed that in 500ms, the marker bit detected is always 0, then chip starts journey
Sequence failed download.
In the exemplary embodiment, it can also be detected again to downloading mark after preset time period, in above-mentioned example
The history longest of chip to start the time be 500ms, set preset time period to 500ms, carried out after 500ms to downloading mark
If detection can determine chip do not detect the download mark for downloading and identifying or detecting with target identification difference
Startup program failed download retransmits to ROM and downloads request, re-downloads startup program.In above-described embodiment, chip is determined
There is also two kinds of possible situations for startup program failed download, and for details, reference can be made to the descriptions of embodiment above, and details are not described herein.
By above-described embodiment it is found that the method that a kind of chip provided in this embodiment downloads startup program, detection chip open
Download mark in dynamic program, downloads the last byte for identifying and being arranged in chip startup program, as fruit chip startup program is downloaded
Failure, the information of the last byte will not then detect.If be not detected download mark or detect download mark with
When target identification difference, then chip startup program is re-downloaded, the problem of to prevent chip startup program failed download.
Further, it is detected within a preset period of time to downloading mark in corresponding above-described embodiment, the application is implemented
Example in can simultaneously detection chip internal register value variable condition because in detection chip startup program download mark be by
According to prefixed time interval detection, if having not yet been downloaded completions in n-th detection, and detect for the N+1 times when not reaching duration also,
Then chip startup program, which has been downloaded, finishes, but does not detect and show that chip startup program downloads the download mark finished
Know, so if downloading mark according to detection merely can not judge whether chip startup program is completely downloaded completely.
Although not detected at this point, downloading mark, since chip startup program has downloaded completion, chip enters
The register value of starting state, chip interior can change according to the working condition of chip, and the register value of chip can occur
Variation.Therefore the register value of chip itself can also be obtained while sending information request to ROM in S1O1 chips
It takes, because register value directly may indicate that whether chip normally starts.For example, chip register value before not actuated is 0,
When chip normally starts after download chip startup program, register value becomes 1.It is above-mentioned only schematical, can also be other
The variation of status indicator, is not specifically limited herein.
If not detecting that the download mark downloaded mark or detected is different from target identification within a preset period of time
When, and the value of register does not also change, and chip startup program may be also in download, also due to downloading at this time
Time exceeds normal download time, therefore can terminate current download, is retransmitted to ROM and downloads request, re-downloaded and open
Dynamic program.Such as it is exemplified in S103, the longest of historical record chips starts the time as 500ms, and preset time period is set
It is set to 500ms.If in 500ms, the value of register is also to maintain original status information, does not change, at this time chip
Startup program, which may be downloaded, there is mistake, then terminates current operation, re-downloads request to ROM transmissions again.
Chip is not before completing download chip startup program, and chip can not start, and register value will not change.Therefore
The variable condition of detection chip internal register value while the above-mentioned download in detection chip startup program identifies, further
Prevent chip startup program failed download.
Chip startup program can also be realized according to the field information of the chip startup program obtained early period in the application
Segmentation is downloaded.Such as do not detect download mark in preset time period, the chip startup program downloaded is obtained at this time
Field length information, according to the original field information of the chip startup program got, the download that remaining field is sent to ROM is asked
It asks, the advantage of doing so is that in the case of chip startup program failed download may be implemented, completes to chip startup program most
It is fast to download.Certainly, above-mentioned downloading mode also need in ROM complete program field fractionation and inner processors of chip to program
The splicing of field.
Corresponding with a kind of chip download method of startup program that above-described embodiment provides, present invention also provides one kind
The embodiment of chip, as shown in figure 4, being a kind of structural schematic diagram of chip provided by the present application.
With reference to Fig. 4, chip 200 provided by the embodiments of the present application includes the storage of the processor 201 and chip of chip interior
Device 202.Chip further includes chip mainboard and electronic circuit, and processor 201, memory 202 and electronic circuit are arranged in chip master
On plate, and chip mainboard includes that all chip parts are encapsulated in chip carrier, and multiple chips are arranged around chip carrier
Pin, to realize the communication between chip and equipment mainboard.
Wherein, processor 201 is internally provided with microstorage, and for storing program, program may include program code, journey
Sequence code includes computer-managed instruction.Microstorage may include random access memory (random access memory,
Abbreviation RAM), it is also possible to further include nonvolatile memory (non-volatile memory), for example, at least a disk storage
Device.A processor is illustrated only in figure, certainly, microstorage can also be as needed, is multi-microprocessor.Microprocessor
Device, for reading the program code stored in memory.Memory 202, the chip downloaded for interim storage chip start journey
Sequence, after chip starts, the chip startup program in memory 202 discharges immediately.
When chip 200 powers on, to ensure that the normal startup of chip 200, processor 201 execute the method for downloading program, really
Download mark in fixed chip startup program to be downloaded, downloads the last byte for identifying and being arranged in chip startup program；Under
Chip startup program is carried, detection, which is downloaded, in downloading process identifies, and according to the testing result for downloading mark, control chip starts journey
The download of sequence.
Processor in chip is carried under the die in the last byte for not detecting chip startup program in startup program
Download mark, then show that chip downloads startup program failed download, at the same also can in detection chip register value state letter
Breath, as the register value in the corresponding chip of fruit chip startup program failed download will not change.To which chip is opened in control
Dynamic program re-downloads, it is therefore prevented that the problem of chip startup program failed download, ensures that chip can normally start.
Corresponding with above-described embodiment, present invention also provides a kind of embodiments of LCD TV.It is the application referring to Fig. 5
A kind of LCD TV 300 that embodiment provides, LCD TV 300 may include following one or more components：TV motherboard
301, tv processor 302, TCON plates 303, power supply module 304, input/output (I/O) interface 305 and communication component 306.
Chip 200 is fixed on TCON plates 303, and tv processor 302 and TCON plates 303 are arranged in TV motherboard
On 301, tv processor 302 and TCON plates 303 are communicated.
TV motherboard 301 is the core component of LCD TV 300, be 300 inside significant components of LCD TV carrier and
Ensure the basis that LCD TV 300 works normally.Wherein tv processor 302 is typically the whole behaviour for controlling LCD TV 300
To make, such as business processing, server communication, tv processor 302 may include one or more processors to execute instruction, with
It performs all or part of the steps of the methods described above.In addition, tv processor 302 may include one or more modules, TV
Interaction between processor 302 and other assemblies.
303 main function of TCON plates is that the LVDS input image data signals that inside liquid crystal television digiboard is sent carry out
It after processing, is converted into that the LVDS signals of liquid crystal display can be driven, then is routed directly to the LVDS reception chips of liquid crystal display.It is arranged in TCON
Chip 200 on plate 303 has image processing function, when the booting of LCD TV 300 after the power is turned on, the chip 200 on TCON plates 303
It needs to download chip startup program from the ROM in inside liquid crystal television tv processor 302, be completed according to the startup program of download
The normal startup of chip 200.
Power supply module 304 provides electric power for the various assemblies of LCD TV 300.Power supply module 304 may include power supply pipe
Reason system, one or more power supplys and other generated with for LCD TV 300, management and the associated component of distribution electric power.
I/O interfaces 305 provide interface between TV motherboard 301 and peripheral interface module, and above-mentioned peripheral interface module can
To be keyboard, click wheel, button etc..These buttons may include but be not limited to：Home button, volume button, start button and lock
Determine button.
Communication component 306 is configured to facilitate the communication of wired or wireless way between LCD TV 300 and other equipment.
LCD TV 300 can access the wireless network based on communication standard, such as WiFi, 2G or 3G or combination thereof.Show at one
In example property embodiment, communication component 306 receives broadcast singal or broadcast from external broadcasting management system via broadcast channel
Relevant information.In one exemplary embodiment, communication component 306 further includes near-field communication (NFC) module, to promote short distance logical
Letter.For example, radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra wide band (UWB) can be based in NFC module
Technology, bluetooth (BT) technology and other technologies are realized.
In the exemplary embodiment, it includes the non-transitorycomputer readable storage medium instructed, example to additionally provide a kind of
Such as include the memory of instruction, above-metioned instruction can be held by the tv processor 302 in the TV motherboard 301 in LCD TV 300
Row.For example, non-transitorycomputer readable storage medium can be ROM, random access memory (RAM), CD-ROM, tape,
Floppy disk and optical data storage devices etc..
By above-described embodiment it is found that present embodiments providing a kind of LCD TV 300, including：TV motherboard 301, TV
Processor 302, TCON plates 303, power supply module 304, input/output (I/O) interface 305 and communication component 306.Chip 200 is set
It sets in TCON plates 303, LCD TV 300 is switched on after the power is turned on, and the TCON plates 303 in TV motherboard 301 are started to work, and setting exists
Chip 200 on TCON plates 303 downloads chip startup program so that TV enters normal work, chip 200 after the power is turned on, root
It is controlled under chip startup program according to the register value in the download mark and chip 200 in detection chip startup program
It carries, and then ensure that 200 startup program of chip is downloaded successfully, the operation of LCD TV normal boot-strap.
It should be noted that herein, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment including a series of elements includes not only those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including institute
State in the process, method, article or equipment of element that there is also other identical elements.
The same or similar parts between the embodiments can be referred to each other in present specification.Especially for chip
And for LCD TV embodiment, start journey since the method that chip therein downloads startup program is substantially similar to chip and downloads
The embodiment of sequence method, so description is fairly simple, related place is downloaded referring to chip in startup program embodiment of the method
Explanation.
Above-described the application embodiment does not constitute the restriction to the application protection domain.
Claims (10)
1. a kind of method that chip downloads startup program, which is characterized in that the method includes：
Determine the download mark in chip startup program to be downloaded, downloads identify be arranged the chip startup program most
The latter byte；
Download the chip startup program；
According to the testing result for downloading mark, the download of the chip startup program is controlled.
2. the method that chip according to claim 1 downloads startup program, which is characterized in that the determination chip to be downloaded
Download mark in startup program, including：
It is sent to ROM and obtains chip startup program information request to be downloaded；
According to the feedback information that the ROM received is beamed back, the byte information of the chip startup program is determined；
The identification information that the last byte of the chip startup program carries is determined according to the byte information, by the mark
Know information to identify as the download.
3. the method that chip according to claim 2 downloads startup program, which is characterized in that described to be marked according to the download
The testing result of knowledge controls the download of chip startup program, including：
If not detecting the download mark and target identification downloaded mark or detected within a preset period of time
When different, then the chip startup program failed download or download delay re-emits download request to ROM, re-downloads institute
State chip startup program.
4. the method that chip according to claim 2 downloads startup program, which is characterized in that described to be marked according to the download
The testing result of knowledge controls the download of chip startup program, including：
If not detecting the download mark and target identification downloaded mark or detected after preset time period
When different, then the chip startup program failed download or download delay re-emits download request to ROM, re-downloads institute
State chip startup program.
5. the method for downloading startup program according to claim 1-3 any one of them chips, which is characterized in that further include：
Determine that the register value in chip, the register value change according to the transformation of the state of the chip；
Download the variable condition that the register value is detected in the chip initiator procedure；
According to the variable condition of the register value, the download of the chip startup program is controlled.
6. the method that chip according to claim 5 downloads startup program, which is characterized in that described according to the register
The variable condition of value controls the download of chip startup program, including：
If the register value does not change in preset time period, the chip startup program failed download, to ROM weights
New send out re-downloads request, re-downloads the chip startup program.
7. the method that chip according to claim 3 or 4 downloads startup program, which is characterized in that the preset time period
Start the time for the history longest of chip.
8. a kind of chip, which is characterized in that including：
Processor；
Memory, the chip startup program downloaded for storage chip；
The processor executes the method for downloading startup program such as claim 1-7 any one of them chips.
9. chip according to claim 8, which is characterized in that further include：SPI modules, for establishing the chip and ROM
Between communication, download the startup program.
10. a kind of LCD TV, which is characterized in that including：
Equipment TV peripheral hardware；
TCON plates, the TCON plates are built in the TV motherboard；
Chip as claimed in claim 8 or 9, the chip are arranged on the TCON plates；
After starting LCD TV, the processor of the chip powers on, and is communicated by SPI and the ROM foundation of the chip, executes core
The method that piece downloads startup program controls the download of chip startup program.
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| CN201810298965.1A CN108513169B (en) | 2018-04-04 | 2018-04-04 | Method for downloading starting program from chip, chip and liquid crystal television |
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| CN201810298965.1A CN108513169B (en) | 2018-04-04 | 2018-04-04 | Method for downloading starting program from chip, chip and liquid crystal television |
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|---|---|---|---|---|
| CN111399926A (en) * | 2018-12-13 | 2020-07-10 | 北汽福田汽车股份有限公司 | Method and device for downloading starting program |
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| CN108513169B (en) | 2021-09-24 |
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