CN103019950A - Space allocation method and use method of one-time programmable chip and device - Google Patents
Space allocation method and use method of one-time programmable chip and device Download PDFInfo
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Abstract
The embodiment of the invention discloses a space allocation method and a use method of a one-time programmable chip and a device. The method comprises the following steps: obtaining the storage space of the one-time programmable chip OTP; according to a preset order and an order from an address low position to a high position, sequentially writing the basic information and correction parameters of corresponding camera modules into the preset address space of the storage space; and setting a preset burn mark bit at the tail of the written basic information and/or the correction parameters. With the adoption of the scheme, the written parameter items and the order and address thereof can be determined, and the parameters can be conveniently found through the burn mark bit, therefore, the various burned OTP can be compatible.
Description
Technical field
The present invention relates to electronic technology field, particularly a kind of space allocation method of One Time Programmable chip, using method reach device.
Background technology
Fast development along with mobile phone cam, more and more higher to video effect and coherence request, and single camera module hardware also can't be accomplished in full accord, therefore need to carry out some effect to single module corrects, particularly need to carry out white balance (White Balance, WB), camera lens rectification etc.
One Time Programmable chip (One time programme, OTP), refer to have can only burning memory headroom once chip, this chip can be deposited the different-effect parameter as requested.
Generally by deposit essential information and correction parameter in OTP, essential information is used for describing the essential information of camera lens, module etc. at present, and correction parameter is for the parameter of proofreading and correct the camera module.
The inventor finds in realizing the process of the embodiment of the invention, and the allocation of space of OTP is chaotic and adopt in differing order and different storage modes at present, causes the OTP of various burnings can't be compatible.
Summary of the invention
The embodiment of the invention provides a kind of space allocation method, using method of One Time Programmable chip, and device, makes the various OTP of burning can be compatible.
A kind of space allocation method of One Time Programmable chip comprises:
Obtain the storage space of One Time Programmable chip OTP;
To high-order order, every with the essential information of corresponding camera module and correction parameter writes in the presumptive address space of described storage space successively according to predefined procedure and address low level; And the essential information that writes and or the end of correction parameter predetermined burning be set indicate the position.
A kind of using method of One Time Programmable chip comprises:
Obtain the presumptive address space of the storage space of One Time Programmable chip;
Determine whether as burning indicates the position according to the order from a high position to the low level, if, then the correction parameter in the page address space, described burning zone bit place is read, be used for proofreading and correct the camera module corresponding with described correction parameter;
The essential information of corresponding described camera module and correction parameter every, be according to predefined procedure and address low level to high-order order, write successively in the presumptive address space of described storage space.
A kind of allocation of space device of One Time Programmable chip comprises:
The space acquiring unit is for the storage space that obtains One Time Programmable chip OTP;
The burning unit is used for according to predefined procedure and address low level to high-order order, and every with the essential information of corresponding camera module and correction parameter writes in the presumptive address space of described storage space successively; And the essential information that writes and or the end of correction parameter predetermined burning be set indicate the position.
A kind of operative installations of One Time Programmable chip comprises:
Address acquisition unit is for the presumptive address space of the storage space that obtains the One Time Programmable chip;
Reading unit is used for determining whether as burning indicates the position according to the order from a high position to the low level, if, then the correction parameter in the page address space, described burning zone bit place is read, be used for proofreading and correct the camera module corresponding with described correction parameter; The essential information of corresponding described camera module and correction parameter every, be according to predefined procedure and address low level to high-order order, write successively in the presumptive address space of described storage space.
As can be seen from the above technical solutions, the embodiment of the invention has the following advantages: arrive high-order order according to predefined procedure and address low level, every with the essential information of corresponding camera module and correction parameter writes in the presumptive address space of storage space successively; And the essential information that writes and or the end of correction parameter predetermined burning be set indicate the position; Can determine so the parameter item that writes and order and address, and can indicate the position by burning and find easily these parameters, thereby make the various OTP of burning can be compatible.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use was briefly introduced during the below will describe embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is embodiment of the invention method flow synoptic diagram;
Fig. 2 is embodiment of the invention other method schematic flow sheet;
Fig. 3 is embodiment of the invention apparatus structure synoptic diagram;
Fig. 4 is another apparatus structure synoptic diagram of the embodiment of the invention.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing, and obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making all other embodiment that obtain under the creative work prerequisite.
The embodiment of the invention provides a kind of space allocation method of One Time Programmable chip, as shown in Figure 1, comprising:
101: the storage space that obtains One Time Programmable chip OTP;
The process that this step is obtained storage space can only be to determine whether the follow-up presumptive address space that will use is complete, perhaps whether exists, and perhaps is in serviceable condition.Storage space will have concrete example in subsequent embodiment.
102: to high-order order, every with the essential information of corresponding camera module and correction parameter writes in the presumptive address space of above-mentioned storage space successively according to predefined procedure and address low level; And the essential information that writes and or the end of correction parameter predetermined burning be set indicate the position.
Subsequent embodiment will be illustrated the essential information of camera module.
Embodiment of the invention scheme, to high-order order, every with the essential information of corresponding camera module and correction parameter writes in the presumptive address space of storage space successively according to predefined procedure and address low level; And the essential information that writes and or the end of correction parameter predetermined burning be set indicate the position; Can determine so the parameter item that writes and order and address, and can indicate the position by burning and find easily these parameters, thereby make the various OTP of burning can be compatible.
More specifically, above-mentioned correction parameter comprises: Automatic white balance (Automatic white balance, AWB) parameter, camera lens shadow correction (Lens Shading Correction, LSC) parameter, automatic focusing (Auto Focus, AF) parameter.In subsequent embodiment, will carry out the concrete example explanation to the item that each parameter may comprise.Need to prove, the correction parameter that present embodiment is given an example be not that camera is proofreaied and correct the exhaustive of the correction parameter that may need for example, should not be construed as for example the restriction to the embodiment of the invention more than therefore.
Alternatively, the essential information of above-mentioned camera module, Automatic white balance AWB parameter and camera lens shadow correction LSC Parameter storage be at the front end in above-mentioned presumptive address space, and at the end the first predetermined burning is set and indicates the position.Alternatively, the precalculated position of above-mentioned automatic focusing AF Parameter storage after the front end in above-mentioned presumptive address space leans on, and the second predetermined burning is set at the end indicates the position.Subsequent embodiment will be elaborated to the concrete location mode of parameters.
The embodiment of the invention also provides a kind of using method of One Time Programmable chip, as shown in Figure 2, comprising:
201: the presumptive address space that obtains the storage space of One Time Programmable chip;
This step only is as the pre-operation before reading, and exists to determine predetermined address space, perhaps can read state.Will there be concrete example in the presumptive address space in subsequent embodiment.
202: determine whether as burning indicates the position according to the order from a high position to the low level, if, then the correction parameter in the page address space, above-mentioned burning zone bit place is read, be used for proofreading and correct the camera module corresponding with above-mentioned correction parameter;
The essential information of corresponding above-mentioned camera module and correction parameter every, be according to predefined procedure and address low level to high-order order, write successively in the presumptive address space of above-mentioned storage space.
Embodiment of the invention scheme, to high-order order, every with the essential information of corresponding camera module and correction parameter writes in the presumptive address space of storage space successively according to predefined procedure and address low level; And the essential information that writes and or the end of correction parameter predetermined burning be set indicate the position; Can determine so the parameter item that writes and order and address, and can indicate the position by burning and find easily these parameters, thereby make the various OTP of burning can be compatible.
More specifically, above-mentioned correction parameter comprises: Automatic white balance AWB parameter, camera lens shadow correction LSC parameter, the automatic AF parameter of focusing; In subsequent embodiment, will carry out the concrete example explanation to the item that each parameter may comprise.Need to prove, the correction parameter that present embodiment is given an example be not that camera is proofreaied and correct the exhaustive of the correction parameter that may need for example, should not be construed as for example the restriction to the embodiment of the invention more than therefore.
The essential information of above-mentioned camera module, Automatic white balance AWB parameter and camera lens shadow correction LSC Parameter storage be at the front end in above-mentioned presumptive address space, and at the end the first predetermined burning is set and indicates the position; The precalculated position of above-mentioned automatic focusing AF Parameter storage after the front end in above-mentioned presumptive address space leans on, and the second predetermined burning is set at the end indicates the position;
Above-mentionedly determine whether to be that according to the order from a high position to the low level burning indicates the position, comprising: determine whether to be that the first burning indicates the position or the second burning indicates the position according to the order from a high position to the low level.
Present embodiment will be illustrated with regard to allocation of space and the utilization flow process of Aptina sensitive chip (Sensor) OTP, the following Aptina Sensor A8140 that goes for for example, A8141, A5140, A5141 etc., also go for it similar chip, the concrete application chip embodiment of the invention will not limit.Below will and use flow process two parts to describe respectively with regard to the OTP Memory Allocation.
One, OTP Memory Allocation: distribute the OTP internal memory according to sequence of addresses:
1, camera module essential information: comprising: camera module Production Time (certain year. certain month. one day, account for 4 bytes), module factory information (accounting for 1 or 2 bytes), shot information (accounting for 1 or 2 bytes), motor information (accounting for 1 or 2 bytes), motor drives chip information (accounting for 1 or 2 bytes), burning environment color temperature information (accounting for 1 or 2 bytes).
2, WB(white balance) parameter: comprising: the ratio of the red red of current module R/Gr(and the green green that goes together), the ratio of the blue blue of B/Gr(and the green green that goes together), the blue colleague's of Gb/Gr(green green and the ratio of the red green green that goes together); Representative value module R, B, Gr, Gb; Current module R, B, Gr, Gb.(22 bytes or 11 bytes) take up space altogether.
3, camera lens is corrected parameter: because camera lens, the characteristics such as the lenticule on the chip, it is obviously dark than center deviation to make four corners of picture, and the phenomenons such as picture color is inhomogeneous in order to complement this problem, need to be carried out camera lens by software and correct, again owing to have consistency problem between the different modules, so same set of parameter can not to fine the complementing of carrying out of all modules, so need to correct single module, therefore need this parameter of OTP allocation of space.Different sensitive chip Sensor, the rectification parameter is different, so the allocation space size is also different.
4, the OTP burning indicates the position, can use value be 0xffff, 16 system 0xffff=65535, and 0xff=255, the OTP value that 4 bytes, 2 bytes (or 0xff) represent this page address of OTP is effective.
5, AF(focuses automatically) parameter: because AF test environment and WB parameter and camera lens rectification test environment are different, so be difficult to realize with a post burning OTP in module factory, for the AF burning, can adopt the out burning of independent post, so general AF=Auto Focus, automatically focusing AF parameter is distributed in the OTP space, is independent page address.The AF parameter includes but not limited to: distant view motor position, close shot motor position, motor reference position.
The below be one of the OTP allocation of space of the Aptina sensitive chip for example, specifically see also table 1, table 2 and table 3.
Table 1 identify label (Identity, ID), AWB burning
Table 2LSC burning
Table 3AF burning
| Light source: | The Type(page address): | ? |
| 5100K | 0x3600to0x3B00 | ? |
| Address | data | Explanation |
| 0x3800 | AF?Pos?infinity(3m) | AF?infinity?AF |
| 0x3802 | AF?Pos?Macro(10cm) | AF?Macro?AF |
| 0x3804 | ? | Deposit 7.5 ± 2.5um AF |
| 0x3806 | 0xFFFF | The burning zone bit |
Two, OTP uses flow process: whether whether the data of burning OTP or OTP the inside are effective in order to judge module, so when using OTP, read the OTP data according to predetermined flow process.Different Sensor(sensitive chips), the OTP space characteristic may be different, Aptina Sensor A8140, and A8141, A5140, the Sensor OTP of the chip of the model such as A5141 and identical category uses flow process, can be with reference to following scheme:
1, read correct data TYPE(page address) flow process:
According to giving an example of table 1 ~ 3, WB, ID, LSC deposit TYPE:0x3000 ~ 3500, and the AF parameter is deposited TYPE:0x3600 ~ 0x3B00, and this step is specifically as follows so:
Begin to judge successively from TYPE3500 whether the data of TYPE are effective, if effectively then read data in this effective TYPE, otherwise judge whether the data of next low level TYPE are effective, until find the TYPE that deposits valid data.
2, TYPE data validity determination methods:
According to giving an example of table 1 ~ 3, the burning zone bit is 0xFFFF, and this step is specifically as follows so:
Read toward low TYPE from high TYPE, judge 0x38FC=0xFFFF and 0x384A B[6]=1 whether set up, if set up then determine effective deposit data in this TYPE, it is invalid to hang down the TYPE data; Judge 0x38FC unequal to 0xffff or 0x384A B[6]=0 whether set up, if set up then determine that this TYPE does not have burning or invalid, need to read low TYPE data.
The embodiment of the invention also provides a kind of allocation of space device of One Time Programmable chip, and this device can be any apparatus of OTP being carried out burning, and concrete equipment is that what embodiment of the invention will not limit, and as shown in Figure 3, comprising:
Burning unit 302 is used for according to predefined procedure and address low level to high-order order, and every with the essential information of corresponding camera module and correction parameter writes in the presumptive address space of above-mentioned storage space successively; And the essential information that writes and or the end of correction parameter predetermined burning be set indicate the position.
Embodiment of the invention scheme, to high-order order, every with the essential information of corresponding camera module and correction parameter writes in the presumptive address space of storage space successively according to predefined procedure and address low level; And the essential information that writes and or the end of correction parameter predetermined burning be set indicate the position; Can determine so the parameter item that writes and order and address, and can indicate the position by burning and find easily these parameters, thereby make the various OTP of burning can be compatible.
More specifically, above-mentioned correction parameter comprises: Automatic white balance AWB parameter, camera lens shadow correction LSC parameter, the automatic AF parameter of focusing;
Above-mentioned burning unit 302, concrete being used for essential information, Automatic white balance AWB parameter and the camera lens shadow correction LSC Parameter storage of the above-mentioned camera module front end in above-mentioned presumptive address space, and at the end the first predetermined burning is set and indicates the position; With the precalculated position of above-mentioned automatic focusing AF Parameter storage after the front end in above-mentioned presumptive address space leans on, and the second predetermined burning is set at the end indicates the position.
The embodiment of the invention also provides a kind of operative installations of One Time Programmable chip, this operative installations can be to read any device that the OTP intrinsic parameter is proofreaied and correct the camera module, such as camera etc., will not limit this embodiment of the invention, as shown in Figure 4, comprising:
Reading unit 402 is used for determining whether as burning indicates the position according to the order from a high position to the low level, if, then the correction parameter in the page address space, above-mentioned burning zone bit place is read, be used for proofreading and correct the camera module corresponding with above-mentioned correction parameter; The essential information of corresponding above-mentioned camera module and correction parameter every, be according to predefined procedure and address low level to high-order order, write successively in the presumptive address space of above-mentioned storage space.
Embodiment of the invention scheme, to high-order order, every with the essential information of corresponding camera module and correction parameter writes in the presumptive address space of storage space successively according to predefined procedure and address low level; And the essential information that writes and or the end of correction parameter predetermined burning be set indicate the position; Can determine so the parameter item that writes and order and address, and can indicate the position by burning and find easily these parameters, thereby make the various OTP of burning can be compatible.
More specifically, above-mentioned correction parameter comprises: Automatic white balance AWB parameter, camera lens shadow correction LSC parameter, the automatic AF parameter of focusing; The essential information of above-mentioned camera module, Automatic white balance AWB parameter and camera lens shadow correction LSC Parameter storage be at the front end in above-mentioned presumptive address space, and at the end the first predetermined burning is set and indicates the position; The precalculated position of above-mentioned automatic focusing AF Parameter storage after the front end in above-mentioned presumptive address space leans on, and the second predetermined burning is set at the end indicates the position;
Above-mentioned reading unit 402 is used for determining whether to be specially into burning indicates the position according to the order from a high position to the low level: determine whether to be that the first burning indicates the position or the second burning indicates the position according to the order from a high position to the low level.
It should be noted that among the said apparatus embodiment that included unit is just divided according to function logic, but is not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional unit also just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
In addition, one of ordinary skill in the art will appreciate that all or part of step that realizes in above-mentioned each embodiment of the method is to come the relevant hardware of instruction to finish by program, corresponding program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be ROM (read-only memory), disk or CD etc.
Below only be the better embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the embodiment of the invention discloses, the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (10)
1. the space allocation method of an One Time Programmable chip is characterized in that, comprising:
Obtain the storage space of One Time Programmable chip OTP;
To high-order order, every with the essential information of corresponding camera module and correction parameter writes in the presumptive address space of described storage space successively according to predefined procedure and address low level; And the essential information that writes and or the end of correction parameter predetermined burning be set indicate the position.
2. described method according to claim 1 is characterized in that described correction parameter comprises:
Automatic white balance AWB parameter, camera lens shadow correction LSC parameter, the automatic AF parameter of focusing.
3. described method according to claim 2, it is characterized in that, the essential information of described picture head mould group, Automatic white balance AWB parameter and camera lens shadow correction LSC Parameter storage be at the front end in described presumptive address space, and at the end the first predetermined burning is set and indicates the position.
4. described method according to claim 3 is characterized in that, the precalculated position of described automatic focusing AF Parameter storage after the front end in described presumptive address space leans on, and at the end the second predetermined burning is set and indicates the position.
5. the using method of an One Time Programmable chip is characterized in that, comprising:
Obtain the presumptive address space of the storage space of One Time Programmable chip;
Determine whether as burning indicates the position according to the order from a high position to the low level, if, then the correction parameter in the page address space, described burning zone bit place is read, be used for proofreading and correct the camera module corresponding with described correction parameter;
The essential information of corresponding described camera module and correction parameter every, be according to predefined procedure and address low level to high-order order, write successively in the presumptive address space of described storage space.
6. described method according to claim 5 is characterized in that described correction parameter comprises: Automatic white balance AWB parameter, camera lens shadow correction LSC parameter, the automatic AF parameter of focusing;
The essential information of described picture head mould group, Automatic white balance AWB parameter and camera lens shadow correction LSC Parameter storage be at the front end in described presumptive address space, and at the end the first predetermined burning is set and indicates the position; The precalculated position of described automatic focusing AF Parameter storage after the front end in described presumptive address space leans on, and the second predetermined burning is set at the end indicates the position;
Describedly determine whether to be that according to the order from a high position to the low level burning indicates the position, comprising:
Determine whether to be that the first burning indicates the position or the second burning indicates the position according to the order from a high position to the low level.
7. the allocation of space device of an One Time Programmable chip is characterized in that, comprising:
The space acquiring unit is for the storage space that obtains One Time Programmable chip OTP;
The burning unit is used for according to predefined procedure and address low level to high-order order, and every with the essential information of corresponding camera module and correction parameter writes in the presumptive address space of described storage space successively; And the essential information that writes and or the end of correction parameter predetermined burning be set indicate the position.
8. described device according to claim 7 is characterized in that described correction parameter comprises: Automatic white balance AWB parameter, camera lens shadow correction LSC parameter, the automatic AF parameter of focusing;
Described burning unit, concrete being used for essential information, Automatic white balance AWB parameter and the camera lens shadow correction LSC Parameter storage of the described camera module front end in described presumptive address space, and at the end the first predetermined burning is set and indicates the position; With the precalculated position of described automatic focusing AF Parameter storage after the front end in described presumptive address space leans on, and the second predetermined burning is set at the end indicates the position.
9. the operative installations of an One Time Programmable chip is characterized in that, comprising:
Address acquisition unit is for the presumptive address space of the storage space that obtains the One Time Programmable chip;
Reading unit is used for determining whether as burning indicates the position according to the order from a high position to the low level, if, then the correction parameter in the page address space, described burning zone bit place is read, be used for proofreading and correct the camera module corresponding with described correction parameter; The essential information of corresponding described camera module and correction parameter every, be according to predefined procedure and address low level to high-order order, write successively in the presumptive address space of described storage space.
10. described device according to claim 9 is characterized in that described correction parameter comprises: Automatic white balance AWB parameter, camera lens shadow correction LSC parameter, the automatic AF parameter of focusing; The essential information of described camera module, Automatic white balance AWB parameter and camera lens shadow correction LSC Parameter storage be at the front end in described presumptive address space, and at the end the first predetermined burning is set and indicates the position; The precalculated position of described automatic focusing AF Parameter storage after the front end in described presumptive address space leans on, and the second predetermined burning is set at the end indicates the position;
Described reading unit is used for determining whether to be specially into burning indicates the position according to the order from a high position to the low level: determine whether to be that the first burning indicates the position or the second burning indicates the position according to the order from a high position to the low level.
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