CN201725350U - Storage card type bar code decoding device - Google Patents
Storage card type bar code decoding device Download PDFInfo
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- CN201725350U CN201725350U CN2010202132106U CN201020213210U CN201725350U CN 201725350 U CN201725350 U CN 201725350U CN 2010202132106 U CN2010202132106 U CN 2010202132106U CN 201020213210 U CN201020213210 U CN 201020213210U CN 201725350 U CN201725350 U CN 201725350U
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Abstract
The utility model discloses a storage card type bar code decoding device comprising a storage card interface for receiving a bar code image, a reading-writing controller and a bar code decoding unit, wherein the reading-writing controller is electrically connected with the storage card interface, and the bar code decoding unit is electrically connected with the reading-writing controller; and the reading-writing controller writes the bar code image into the bar code decoding unit for decoding, reads the decoding information of the bar code image, and outputs the decoding information via the storage card interface. Through the arrangement, the storage card type bar code decoding device can realize the instant decoding of the bar code image after the bar code image is input, and has the advantages of convenient use, fast decoding speed, low cost, wide application range, processing of bar code images of different coding types and the like.
Description
[technical field]
The utility model relates to a kind of bar-code decoder, particularly a kind of memory card type bar code decoding device.
[background technology]
Storage card, it is the independent storage medium that is used on mobile phone, digital camera, portable computer, MP3 and other digital products, generally be the form of card,, be called " digital memory card ", " digital memory card ", " storing card " etc. again so be referred to as " storage card ".Storage card have volume small and exquisite, easy to carry, use simple advantage.Simultaneously, most of storage cards all have favorable compatibility, are convenient to swap data between different digital products.
Barcode technology is an emerging technology that integrates coding, printing, identification, data acquisition and processing (DAP) that grows up on computer technology and infotech basis.Barcode technology is because its identification is quick, accurate, reliable and low cost and other advantages, be widely used in fields such as commerce, taking care of books, storage, post and telecommunications, traffic and Industry Control, and certainly will in " Internet of Things " that rise gradually used, bring into play great function.
The bar code that is widely used at present comprises bar code and two-dimensional bar code.Bar code claims linear bar code again, is made up of a plurality of " bars " that are arranged in parallel and " sky " unit, and bar code information is expressed by bar and empty different in width and position.
Two-dimensional bar code is made up of the chequered with black and white particular geometric figure that distributes on two-dimensional directional according to certain rules, its can be on two-dimensional directional expressing information, so information capacity and space availability ratio are higher, and have certain verifying function.Two-dimensional bar code can be divided into stack two-dimensional bar code and matrix two-dimensional barcode.The stack two-dimensional bar code is that the bar code by the multirow cutting back piles up and forms, and representational stack two-dimensional bar code comprises PDF417, Code 49, Code 16K etc.Matrix two-dimensional barcode is made up of black, the white module that is distributed in by pre-defined rule in the matrix, and representational matrix two-dimensional barcode comprises Code one, Aztec, DataMatrix, OR sign indicating number etc.
It generally is to utilize the mode of software decode to realize that existing bar code decoding is handled, and need write a series of software programs of realizing decoding algorithm in processor, and software program is reversed engineering easily and cracks; Because single processor can only be is simultaneously carried out decoding processing at a kind of barcode standard of particular type, so decoding speed is slower, can not handle the bar code of multiple Format Type; Moreover owing to realize that the software algorithm of bar code decoding is comparatively complicated, therefore generally speaking the processor that is adopted is high-end processor (as 32 bit processors), because high-end processor price is comparatively expensive, therefore causes cost to raise.
In addition, existing bar code decoding equipment needs special bar code decoding processor and treatment circuit could realize decoding function, and equipment volume is bigger, and versatility is poor.Existing portable electric appts need be made amendment to inner structure and handling procedure could integrated existing bar code decoding equipment, the manufacturing cost and the use cost of portable electric appts have been increased, and common portable electric appts is difficult under the situation of not carrying out scrap build realizing the bar code decoding function that this has limited the application of barcode technology.
Therefore,, need a kind of bar code decoding scheme that provides badly, to realize miniaturization, portability and the plug-and-play feature of bar code decoding equipment at the above deficiency that prior art exists.
[summary of the invention]
In order to overcome the slow and shortcomings such as type is single of decoding of cost increase, difficult wiring, decoding speed that prior art exists, the utility model provides a kind of memory card type bar code decoding device, to overcome the problems referred to above.
The technical scheme in the invention for solving the above technical problem provides a kind of memory card type bar code decoding device, and wherein, memory card type bar code decoding device comprises: memory card interface is used to receive bar code image; Read-write controller is electrically connected with memory card interface; And the bar code decoding unit, being electrically connected with Read Controller, read-write controller writes the bar code decoding unit with bar code image and decodes, and reads the decoded information of bar code image, and exports through memory card interface.
According to one of the utility model preferred embodiment, the bar code decoding unit comprises: data-carrier store is used to store bar code image; Registers group comprises command register and data register, and command register is used for temporary order, and data register is used for temporal data; Bar code decoding pipeline is used to handle bar code image; The master control logic module is obtained processing command from command register, according to processing command the bar code image of storing in the data-carrier store is transferred to bar code decoding pipeline and decodes; And virtual nand flash memory bus interface, be electrically connected with registers group and read-write controller respectively, to receive bar code image.
According to one of the utility model preferred embodiment, the bar code decoding unit comprises: data-carrier store is used to store bar code image; Registers group comprises command register and data register, and command register is used for temporary order, and data register is used for temporal data; Bar code decoding pipeline is used to handle bar code image; The master control logic module is obtained processing command from command register, according to processing command the bar code image of storing in the data-carrier store is transferred to bar code decoding pipeline and decodes; And bus interface, be electrically connected with registers group and read-write controller respectively, to receive bar code image.
According to one of the utility model preferred embodiment, the bar code decoding unit further comprises config memory, config memory is electrically connected with registers group, the computing parameter and the data of tabling look-up when being used to store bar code decoding pipeline work, bar code decoding pipeline is obtained the computing parameter and the data of tabling look-up by master control logic module and registers group from config memory.
According to one of the utility model preferred embodiment, the bar code decoding unit further comprises config memory, and config memory is arranged on bar code decoding pipeline inside, the computing parameter and the data of tabling look-up when being used to store bar code decoding pipeline work.
According to one of the utility model preferred embodiment, read-write controller comprises: the flash data control module, be electrically connected with virtual nand flash memory bus interface, and be used for virtual nand flash memory bus interface is conducted interviews and inputoutput data; Memory card controller, be electrically connected with the flash data control module, be used for the data that meet storage card communication protocol of input are converted to storage data input flash data control module, and the data of flash data control module output are converted to the data output that meets storage card communication protocol; Microprocessor is electrically connected with flash data control module and memory card controller respectively, is used to coordinate the duty of flash data control module and memory card controller.
According to one of the utility model preferred embodiment, read-write controller comprises: the flash data control module, be electrically connected with virtual nand flash memory bus interface, and be used for virtual nand flash memory bus interface is conducted interviews and inputoutput data; Memory card controller, be electrically connected with the flash data control module, be used for the data that meet storage card communication protocol of input are converted to storage data input flash data control module, and the data of flash data control module output be converted to the data output that meets storage card communication protocol.
According to one of the utility model preferred embodiment, memory card controller is integrated in inside, bar code decoding unit.
According to one of the utility model preferred embodiment, a plurality of bar code decoding pipeline are realized by hardware logic in the bar code decoding unit, and a plurality of bar code decoding pipeline are carried out parallel processing to bar code image.
According to one of the utility model preferred embodiment, storage card is person one of in CF card, mmc card, SD card, MicroSD card, Min SD card and the SM card.
According to one of the utility model preferred embodiment, memory card type bar code decoding device further comprises storer, and this storer is electrically connected with read-write controller, to receive data or the decoded information through the memory card interface input.
By above setting, memory card type bar code decoding device of the present utility model can be realized picture input instantaneous decoding, have easy to use, decoding speed is faster, cost is lower, be widely used, and can handle the advantages such as bar code image of multiple different coding type.
[description of drawings]
Can with reference to the accompanying drawings and by example the utility model be described more specifically, in the accompanying drawings:
Fig. 1 is a kind of structural representation according to the memory card type bar code decoding device of the utility model first embodiment;
Fig. 2 is the another kind of structural representation according to the memory card type bar code decoding device of the utility model first embodiment;
Fig. 3 is the circuit connection block diagram according to the memory card type bar code decoding device of the utility model first embodiment;
Fig. 4 is the circuit connection block diagram according to the memory card type bar code decoding device of the utility model second embodiment; And
Fig. 5 is the circuit connection block diagram according to the memory card type bar code decoding device of the utility model the 3rd embodiment.
[embodiment]
Relevant feature of the present utility model and technology contents please refer to following detailed description and accompanying drawing, and accompanying drawing only provides reference and explanation, is not to be used for the utility model is limited.
Please join Fig. 1 and Fig. 2 in the lump, Fig. 1 is a kind of structural representation according to the memory card type bar code decoding device of the utility model first embodiment; Fig. 2 is the another kind of structural representation according to the memory card type bar code decoding device of the utility model one embodiment.
Generally speaking, various types of storage cards are as existing C F (Compact Flash) card, mmc card (MultiMedia Card), SD card (Secure Digital), Micro SD card, Min SD card and SM (Smart Media) card etc. all comprise memory card interface 10, read-write controller 20 and storer 30 on the market.The similar of the memory card type bar code decoding device that the utility model disclosed is in these storage cards, can be in these storage cards, to set up bar code decoding unit 100 (as shown in Figure 2) to make storage card have the function of instantaneous decoding, or comprise the special-purpose decoding device (as shown in Figure 1) of memory card interface 10, read-write controller 20 and bar code decoding unit 100.
The utility model provides above-mentioned two types memory card type bar code decoding device, the user can select according to the application demand of self, if only need the bar code decoding function, then can adopt the special-purpose decoding device that comprises memory card interface 10, read-write controller 20 and bar code decoding unit 100, realize bar code decoding by this special use decoding device.If the user also needs memory function, then can adopt the memory card type bar code decoding device of memory card interface 10, read-write controller 20, storer 30 and bar code decoding unit 100, the user in use both can store data, also can decode to bar code, bar code image or decoded information also can be stored in the storer 30 in addition, are user-friendly to.
Particularly, see also Fig. 3, Fig. 3 is the circuit connection block diagram according to the memory card type bar code decoding device of the utility model first embodiment.The bar code decoding unit 100 of memory card type bar code decoding device of the present utility model comprises virtual nand flash memory bus interface 116, config memory 111, registers group 103, master control logic module 101, bar code decoding pipeline 102 and data-carrier store 104.
Wherein, bar code decoding pipeline 102 comprises PDF417 bar code decoding pipeline, bar code decoded stream waterline and RSS (Reduced Space Symbology dwindles space code) bar code decoding pipeline, dissimilar bar code decoding pipeline is used to handle the bar code image of different barcode standards, and it utilizes hardware logic to realize.
Data-carrier store 104 is used to store the bar code image that obtains from outside, bar code decoding unit, and it specifically can utilize RAM (random access memory random access memory) to realize.
Master control logic module 101 can trigger particular event according to particular command, can be by triggering switch (not shown) is set or obtains external command from virtual nand flash memory bus interface 116 and choose required state of a control of being electrically connected with master control logic module 101, as obtaining bar code image, transmit it to bar code decoding pipeline 102 etc. from data-carrier store 104.The master control logic module 101 that the utility model disclosed does not possess calculation function, but only triggers corresponding event according to certain condition, specifically can utilize existing state machine to realize.
Virtual nand flash memory bus interface 116 is electrically connected with registers group 103 and read-write controller 20 respectively, to receive bar code image.
Be provided with registers group 103 between virtual nand flash memory bus interface 116 and the master control logic module 101, registers group 103 comprises a series of self-defining registers, comprise status register, data register and command register etc., status register is used to show the duty of master control logic module 101, data register is used for temporal data, command register is used for temporary order, master control logic module 101 can be from the data register reading of data, from the order register read command, and make specific action according to particular command, comprising from virtual nand flash memory bus interface 116 input commands.Registers group 103 is isolated bar code decoding pipeline 102 and external circuit with master control logic module 101, after can making things convenient for bar code decoding pipeline 102 is upgraded (as increasing the bar code decoding pipeline of handling the extended formatting type) more.
In addition, config memory 111 is electrically connected with registers group 103, the computing parameter when being used to store bar code decoding pipeline 102 work and the data of tabling look-up (as the required code table of decoding computing), bar code decoding pipeline 102 can be obtained above data from config memory 111 by master control logic module 101 and registers group 103, it must guarantee can obliterated data under the situation of outage, available existing EEPROM (Electrically Erasable Programmable Read-Only Memory, EEPROM (Electrically Erasable Programmable Read Only Memo)) realizes, in some cases, config memory 111 can be set directly in the bar code decoding pipeline 102.
When bar code image inputs in the data register of registers group 103 by virtual nand flash memory bus interface 116, master control logic module 102 can be obtained bar code image from data register, and it is saved to data-carrier store 104, when master control logic module 102 when the command register of registers group 103 reads processing command, bar code image in the data-carrier store 104 can be transferred to bar code decoding pipeline 102 and handle, bar code decoding pipeline 102 can be carried out the image pre-service to this bar code image, gray scale is extracted, binaryzation, code word reads, a series of bar code decodings such as decoding processing are handled operation.
It should be noted that because bar code decoding pipeline 102 comprises multiple bar code decoding pipeline at different barcode types such as PDF417 bar code decoding pipeline, bar code decoded stream waterline and RSS bar code decoding pipeline.Therefore, after obtaining bar code image, for example be bar code, this bar code image can transfer to simultaneously in above three kinds of bar code decoding pipeline and carry out parallel processing so, and is exported the correct bar code information of this bar code image by the bar code decoded stream waterline compatible with its form.A kind of bar code decoding pipeline of or other multiple forms also can be set certainly, as required.
Because incompatible with the bar code picture format, PDF417 bar code decoding pipeline and RSS bar code decoding pipeline can't be carried out respective handling after receiving this bar code image, and export correct bar code information.Similarly, bar code decoding pipeline 102 also can be carried out above-mentioned processing to PDF417 bar code image, RSS bar code image.Certainly, master control logic module 102 also can be handled the input bar code image according to the bar code streamline that user's selection is only controlled in a plurality of bar code streamlines.
In addition, if successively obtain three bar code image A from virtual nand flash memory bus interface 116, B, C is to data-carrier store 104, three bar code image A, B, respectively corresponding three kinds of dissimilar barcode standards of C: PDF417 bar code, RSS bar code and bar code, these three bar code images can provide to bar code decoding pipeline 102 from data-carrier store 104 by the precedence of obtaining so, under the same time, the PDF417 bar code decoding pipeline, bar code decoded stream waterline and RSS bar code decoding pipeline be parallel processing bar code image A at first, the result is: the PDF417 bar code decoding pipeline can handle accordingly to bar code image A, and export correct bar code information, other two bar code decoding pipeline then can't be handled bar code image A.If in the processing procedure of PDF417 bar code decoding pipeline to bar code image A, bar code decoded stream waterline and RSS bar code decoding pipeline have been confirmed to handle A, then can attempt handling next bar code image B, wherein the RSS bar code decoding pipeline can be handled bar code image B, and exports correct bar code information.If in the process that PDF417 bar code decoding pipeline and RSS bar code decoding pipeline are handled bar code image A, B respectively, bar code decoded stream waterline has been confirmed to handle bar code image B, then can continue to attempt next bar code image C is handled, and because form correspondence, bar code decoded stream waterline can be handled C, and exports correct bar code information.
Just can handle second bar code image owing to waiting for that first bar code image finished dealing with, and need not wait for that second bar code image finished dealing with and just can handle the 3rd bar code and open image that therefore above parallel bar code image processing mode can greatly improve the speed of handling dissimilar bar code images.
The bar code information of bar code decoding pipeline 102 outputs can be stored to data-carrier store 104 by master control logic module 101, and is stored to data register from data-carrier store 104 again when needs are exported.Certainly, the bar code information of bar code decoding pipeline 102 outputs can directly be stored to data register by master control logic module 101.The bar code information that is stored to data register can be through virtual nand flash memory bus interface 116 outputs.
The virtual nand flash memory bus interface 116 that the utility model adopted comprises standard nand flash memory interface, mainly comprises following pin, I/O
0-I/O
7, CLE, ALE, CS, WE, RE, wherein each functions of pins such as following table 1.1 introduction:
Table 1.1
| Pin name | Pin function |
| I/O 0～I/O 7 | I/O 0～I/O 7/ basic input and output I/O 0～I/O 7Pin is used for input command (command), address (address), data (data), and when read operation (read) output data. |
| CLE | When COMMAND LATCH ENABLE/ command latch enable CLE activated, the input data were order. |
| ALE | When ADDRESS LATCH ENABLE/ address latch enabled the ALE activation, the input data were the address. |
| CS | The choosing of CHIP SELECT/ sheet is worked as this input end in significant level, and chip just enters duty, realizes the input and output of data. |
| WE | WRITE ENABLE/ writes and enables WE the input of I/O end is controlled, and WE activates, and allows input, and order, address, data latching are at the rising edge or the negative edge of WE pulse. |
| RE | READ ENABLE reads to enable RE the input of I/O end is controlled, and WE activates, and allows to export to I/O. |
Generally speaking, when pin ALE was effective, virtual nand flash memory bus interface 116 was from pin I/O
0～I/O
7Receive address date, when pin CLE was effective, virtual nand flash memory bus interface 116 was from pin I/O
0～I/O
7Receive order, and will order and keep in to the command register of registers group 103, when the WE pin was effective, bar code image can be from the pin I/O of virtual nand flash memory bus interface 116
0-I/O
7The data register of input register group 103, master control logic module 101 can be obtained bar code image from the data register of registers group 103 according to mentioned order, and transfers to data-carrier store 104.In addition, when master control logic module 101 when the command register of registers group 103 reads processing command, the bar code image in the data-carrier store 104 can be transferred to bar code decoding pipeline 102 and carry out decoding processing.
Virtual nand flash memory bus interface 116 is electrically connected with the read-write controller 20 of storage card, make read-write controller 20 with virtual nand flash memory bus interface 116 with and subsequent registers group 103, master control logic module 101, bar code decoding pipeline 102, data-carrier store 104 be identified as existing nand flash memory, therefore, virtual nand flash memory bus interface 116 with and subsequent registers group 103, master control logic module 101, bar code decoding pipeline 102, data-carrier store 104 invented existing nand flash memory, by read-write controller 20 its read-write operations of control.
The read-write controller 20 of memory card type bar code decoding device of the present utility model comprises flash data control module 117, microprocessor 119, memory card controller 118, certainly, flash data control module 117, microprocessor 119, memory card controller 118 also can separate with read-write controller 20, and, flash data control module 117, microprocessor 119, memory card controller 118 can also be modules independently, or integrated module mutually.
Virtual nand flash memory bus interface 116 is electrically connected with flash data control module 117, make flash data control module 117 with virtual nand flash memory bus interface 116 with and subsequent registers group 103, master control logic module 101, bar code decoding pipeline 102, data-carrier store 104 is identified as existing nand flash memory, therefore, virtual nand flash memory bus interface 116 with and subsequent registers group 103, master control logic module 101, bar code decoding pipeline 102, data-carrier store 104 is invented existing nand flash memory, by flash data control module 117 its read-write operations of control.
Wherein, microprocessor 119 is electrically connected with flash data control module 117 and memory card controller 118 respectively, be used to coordinate the duty of flash data control module 117 and memory card controller 118, memory card controller 118 is electrically connected with memory card interface 10 and flash data control module 117 respectively, be used for the data that meet storage card communication protocol of memory card interface 10 inputs are converted to storage data input flash data control module 117, and the data that flash data control module 117 is exported are converted to the data that meet storage card communication protocol, via memory card interface 10 outputs, thus the data transmission between realization flash data control module 117 and the memory card interface 10.Flash data control module 117 is used for virtual nand flash memory bus interface 116 is conducted interviews and inputoutput data.
By above setting, after bar code image is imported from memory card interface 10, read-write controller 20 is delivered to virtual nand flash memory bus interface 116 with this bar code image, virtual nand flash memory bus interface 116 is temporary to the data register of registers group 103 with bar code image, master control logic module 101 is obtained from data register and is changed bar code image, and it is stored to data-carrier store 104, when master control logic module 101 receives processing command from command register after, bar code image in the data-carrier store 104 can be sent to bar code decoding pipeline 102, by the computing of decoding of 102 pairs of these bar code decoding pipeline of bar code decoding pipeline, and after computing is finished, operation result exported to memory card interface 10 or be retained in the storer 30.
Next, see also Fig. 4, Fig. 4 is the circuit connection block diagram according to the memory card type bar code decoding device of the utility model figure second embodiment.
In the present embodiment, the bar code decoding unit 200 of memory card type bar code decoding device comprise bus interface 216, deposit config memory 211, registers group 203, master control logic module 201, bar code decoding pipeline 202 and data-carrier store 204.Wherein, it is identical with first embodiment of the present utility model to deposit the function of config memory 211, registers group 203, master control logic module 201, bar code decoding pipeline 202 and data-carrier store 204.Its difference is, to replace with bus interface 216 for virtual nand flash memory bus interface 116, bus interface 216 is electrically connected with registers group 203, so that bar code decoding unit and external circuit carry out communication, bus interface 216 is not limited to the interface mode of virtual nand flash memory, so applicability is more extensive.
In the present embodiment, the read-write controller 20 of memory card type bar code decoding device comprises: microprocessor 219 and memory card controller 218, certainly, microprocessor 219, memory card controller 218 also can separate with read-write controller 20, and, microprocessor 219, memory card controller 218 can also be modules independently, or integrated module mutually.Wherein, the function of microprocessor 219 and memory card controller 218 is identical with first embodiment, and microprocessor 219 is electrically connected with bus interface 216 and memory card controller 218 respectively, is used to coordinate the duty of bus interface 216 and memory card controller 118; Memory card controller 218 is used for the data that meet storage card communication protocol of memory card interface 220 inputs are converted to the data layout that the bar code decoding unit can be distinguished, and via microprocessor 219 input bar code decoding unit, and the data of microprocessor 219 output are converted to the data that meet storage card communication protocol, via memory card interface 10 outputs; Memory card interface 10 is connected with memory card controller 218, is used to input or output data.Present embodiment has been simplified the complexity of memory card type bar code decoding device widely compared to first embodiment.
Next, see also Fig. 5, Fig. 5 is the circuit connection block diagram according to the memory card type bar code decoding device of the utility model the 3rd embodiment.
In the present embodiment, the bar code decoding unit 300 of memory card type bar code decoding device comprises bus interface 316, memory card controller 318, config memory 311, registers group 303, master control logic module 301, bar code decoding pipeline 302 and data-carrier store 304.Wherein, the function of bus interface 316, memory card controller 318, config memory 311, registers group 303, master control logic module 301, bar code decoding pipeline 302 and data-carrier store 304 is identical with the first and second above-mentioned embodiment, really is connected to memory card interface 320 and is electrically connected.It should be noted that in the present embodiment memory card controller 318 directly is connected with bus interface 316, and be integrated in inside, bar code decoding unit.Therefore, strengthened the portability of bar-code decoder widely.
The utility model provides a kind of portable bar code decoding scheme, the user only needs bar code image is input in the memory card type bar code decoding device, just can obtain corresponding bar code information, improved the bar code decoding portability of equipment, simultaneously owing to adopted similar parallel hardware decoding process, thereby decoding speed is faster than existing software decode speed.
By the above embodiment that discloses as can be known, the memory card type bar code decoding device that the utility model disclosed has been owing to adopted bar code decoding to handle special-purpose hardware decoded stream waterline, thus its to compare decoding speed faster with existing software decode; In addition, the bar code decoding of pure hardware configuration processing streamline can not be reversed engineering and crack, and security performance is very high; And, the bar code decoding collection of units is formed on the storage card, make the portability of decoding device greatly improve.
Above with reference to description of drawings various preferred embodiments of the present utility model; but only otherwise deviate from essence of the present utility model and scope; those skilled in the art can carry out modifications and changes on the various forms to it, all belongs to protection domain of the present utility model.
Claims (11)
1. a memory card type bar code decoding device is characterized in that, described memory card type bar code decoding device comprises:
Memory card interface is used to receive bar code image;
Read-write controller is electrically connected with described memory card interface; And
The bar code decoding unit is electrically connected with described Read Controller, and described read-write controller writes described bar code decoding unit with described bar code image and decodes, and reads the decoded information of described bar code image, and through described memory card interface output.
2. memory card type bar code decoding device according to claim 1 is characterized in that, described bar code decoding unit comprises:
Data-carrier store is used to store bar code image;
Registers group comprises command register and data register, and described command register is used for temporary order, and described data register is used for temporal data;
Bar code decoding pipeline is used to handle described bar code image;
The master control logic module is obtained processing command from described command register, according to described processing command the described bar code image of storing in the described data-carrier store is transferred to described bar code decoding pipeline and decodes; And
Virtual nand flash memory bus interface is electrically connected with described registers group and described read-write controller respectively, to receive described bar code image.
3. memory card type bar code decoding device according to claim 1 is characterized in that, described bar code decoding unit comprises:
Data-carrier store is used to store bar code image;
Registers group comprises command register and data register, and described command register is used for temporary order, and described data register is used for temporal data;
Bar code decoding pipeline is used to handle described bar code image;
The master control logic module is obtained processing command from described command register, according to described processing command the described bar code image of storing in the described data-carrier store is transferred to described bar code decoding pipeline and decodes; And
Bus interface is electrically connected with described registers group and described read-write controller respectively, to receive described bar code image.
4. memory card type bar code decoding device according to claim 1, it is characterized in that, described bar code decoding unit further comprises config memory, described config memory is electrically connected with described registers group, the computing parameter and the data of tabling look-up when being used to store described bar code decoding pipeline work, described bar code decoding pipeline is obtained described computing parameter and the described data of tabling look-up by described master control logic module and described registers group from described config memory.
5. memory card type bar code decoding device according to claim 1, it is characterized in that, described bar code decoding unit further comprises config memory, described config memory is arranged on described bar code decoding pipeline inside, the computing parameter and the data of tabling look-up when being used to store described bar code decoding pipeline work.
6. according to claim 2 or 3 described memory card type bar code decoding devices, it is characterized in that described read-write controller comprises:
The flash data control module is electrically connected with described virtual nand flash memory bus interface, is used for described virtual nand flash memory bus interface is conducted interviews and inputoutput data;
Memory card controller, be electrically connected with described flash data control module, the data that meet storage card communication protocol that are used for importing are converted to the storage data and import described flash data control module, and the data of described flash data control module output are converted to the data output that meets storage card communication protocol;
Microprocessor is electrically connected with described flash data control module and described memory card controller respectively, is used to coordinate the duty of flash data control module and memory card controller.
7. according to claim 2 or 3 described memory card type bar code decoding devices, it is characterized in that described read-write controller comprises:
The flash data control module is electrically connected with described virtual nand flash memory bus interface, is used for described virtual nand flash memory bus interface is conducted interviews and inputoutput data;
Memory card controller, be electrically connected with described flash data control module, the data that meet storage card communication protocol that are used for importing are converted to the storage data and import described flash data control module, and the data of described flash data control module output are converted to the data output that meets storage card communication protocol.
8. the bar-code decoder based on memory card interface according to claim 7 is characterized in that, described memory card controller is integrated in inside, described bar code decoding unit.
9. according to claim 2 or 3 described memory card type bar code decoding devices, it is characterized in that, it is characterized in that a plurality of described bar code decoding pipeline are realized by hardware logic in described bar code decoding unit, described a plurality of bar code decoding pipeline are carried out parallel processing to described bar code image.
10. memory card type bar code decoding device according to claim 1 is characterized in that, described storage card is person one of in CF card, mmc card, SD card, Micro SD card, Min SD card and the SM card.
11. memory card type bar code decoding device according to claim 1, it is characterized in that, described memory card type bar code decoding device further comprises storer, and described storer is electrically connected with described read-write controller, to receive data or the described decoded information through described memory card interface input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202132106U CN201725350U (en) | 2010-06-01 | 2010-06-01 | Storage card type bar code decoding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202132106U CN201725350U (en) | 2010-06-01 | 2010-06-01 | Storage card type bar code decoding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201725350U true CN201725350U (en) | 2011-01-26 |
Family
ID=43493694
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202132106U Expired - Lifetime CN201725350U (en) | 2010-06-01 | 2010-06-01 | Storage card type bar code decoding device |
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|---|---|
| CN (1) | CN201725350U (en) |
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2010
- 2010-06-01 CN CN2010202132106U patent/CN201725350U/en not_active Expired - Lifetime
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