CN1570882A - Memory unit capable of increasing memory capacity - Google Patents
Memory unit capable of increasing memory capacity Download PDFInfo
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- CN1570882A CN1570882A CN 03150185 CN03150185A CN1570882A CN 1570882 A CN1570882 A CN 1570882A CN 03150185 CN03150185 CN 03150185 CN 03150185 A CN03150185 A CN 03150185A CN 1570882 A CN1570882 A CN 1570882A
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Abstract
This invention discloses a kind of storage devices that can enlarge storage capacity. It mainly comprises a controller and at least one solid storage medium. The controller comprises at least a system interface that connects to exterior system-end; a microprocessor that can process system command and a storage interface that communicates with the solid storage medium. By going through proper compression and decompression mechanism, this controller can compress the original data that transferred from exterior system-end and waiting for storing to denier data in I/N proportion and write it to solid storage medium. So the solid storage medium can acquire larger storage capacity.
Description
Technical field
The present invention relates to a kind of storage device that promotes memory space, particularly a kind ofly utilize compress technique will desire storage data to impose compression, to promote the storage device of memory data output.
Background technology
Day by day popularize as solid-state storage media (as flash memory) by the silicon wafer storer at present, because advantages such as the power consumption of silicon wafer storage utensil are low, fiduciary level is high, capacity is big and access speed is fast, and be widely used in storage device as storage card and the carry-on dish of USB etc.These storage device inside are except that the configuration solid-state storage media, also be provided with a controller, this controller have the instruction of a system port that is connected with the external system end, a disposal system microprocessor and one with the port memory of solid-state storage media communication, and then by system end will treat storage data write this solid-state storage media or certainly this solid-state storage media read required storage data.
Wherein, the carry-on dish of storage card and USB is had nothing in common with each other on application; Storage card is the present most popular portable digital product of using as digital camera, digital walkman, PDA etc., because its each product application vendor difference, to support the storage card of releasing also inequality, so derive multiple storage card kenel, such as: mini memory cards such as CF, MS, SD, MMC, SM.And its USB port that can possess by body easily of the carry-on dish of above-mentioned USB is applied in as in the PC applications such as desktop computer or notebook computer, has the characteristic of convenient use and becomes the stored prod person who enjoys great popularity in recent years.
But no matter be the storage device of storage card or the carry-on dish of USB etc., the key that determines its production cost and sell price is the capacity of the solid-state storage media that it is built-in.Storage capacity with present solid-state storage media, the storage device output that 64MB, 128MB and 256MB number of degrees are arranged, its cost all is directly proportional with the storage volume of its solid-state storage media that includes with price, that is the storage volume of solid-state storage media is big more, then the price sold of storage device reaction is high more, otherwise then low more.But when the hardware technology acquired a certain degree, solid-state storage media also was faced with and the identical predicament of CD-R CD-RW discsCD-RW at present in identical dimensions, and promptly its storage volume promptly can't promote again.Though existing at present nanosecond science and technology can promote its storage volume with the storage area microminiaturization, this technology still is in the budding stage at present, still is unable to cope with the predicament that storage capacity can't promote.
For this reason, a kind of practice that above-mentioned storage volume can't promote that solves is promptly arranged, promptly establish a slot, make this slot external memory card of can pegging graft separately again, reach the purpose that expands the storage storage volume whereby at described storage device body (storage card, the carry-on dish of USB) appropriate location structure.Though the problem that it can solve the storage volume deficiency derives the point that the cost that must purchase external memory card separately increases.
Therefore, if a kind of storage device can be arranged, it can not increase under the condition of solid-state storage media or external storage device separately, by promoting the data processing function of internal controller, the data that the suitable compression mechanism of controller utilization is stored desire give the row storage again of its data volume of littleization, can be under the hardware resource that does not expand storage device, and then promote its storage data amount.
Summary of the invention
Supervise in this, fundamental purpose of the present invention is to provide a kind of storage device that improves memory space, and this storage device mainly is made of a controller and at least one solid-state storage media.Wherein, the microprocessor and one that is provided with a yarn system port that is connected with the external system end, disposal system instruction in this controller is linked up the port memory that is connected with these solid energy Storage Medias, it is characterized in that: this controller can pass through suitable compression mechanism, and the raw data that desire is stored is collapsed into atomic quantized data with the compression factor of 1/N and is stored in solid-state storage media with record.In view of the above, by this compression mechanism, the data volume of compress and make the solid-state storage media storage area must deposit more storage datas significantly to the greatest extent to reach the purpose that improves amount of data storage, also possesses the cost of products of reduction simultaneously and improves characteristic such as access speed.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. elaborate:
Description of drawings
Fig. 1 is the circuit skeleton diagram of a preferred embodiment of the present invention's storage device that can promote memory space;
Fig. 2 be Fig. 1 of the present invention propose to compress with uncompressed state under the difference comparison chart.
1: storage device
10: controller
101: system port
102: microprocessor
103: port memory
104: data compressing module
105: data decompression module
106: the first data buffers
107: the second data buffers
20: solid-state storage media
2: the external system end
Embodiment
Please refer to Fig. 1, is a kind of internal circuit synoptic diagram that promotes the storage device of memory space of the present invention.Wherein, storage device 1 can be the carry-on dish product of USB that is widely used in the storage card kenel of various portable digital products at present or is applied to pc domain, also or at present still possesses in research and development i.e. other storage devices of (Flash Memory) of solid-state storage media are arranged.
Wherein, this storage device 1 mainly is made up of with at least one solid-state storage media 20 controller 10, includes system port 101, microprocessor 102 and port memory 103 in this controller 10.System port 101 is in order to being application apparatuss such as aforesaid various portable digital product and computer system as being communicated with outside predetermined system end 2); Memory bank port one 03 is linked up with this solid-state storage media 20 and is connected.And microprocessor 102 connected system port ones 01 and memory bank port one 03.
Please join shown in Figure 1ly, the design of taking for the storage capacity that promotes solid-state storage media 20 is that a data compressing module 104 and a data decompression module 105 are set in storage device 1 in the present invention.Wherein, data compressing module 104 electrically connects microprocessor 102 respectively with data decompression module 105 and moves with the triggering that receives microprocessor 102, and its method of operation is with follow-up explanation.Transmission speed differs between the high, low speed port in order to adapt in addition, and other is provided with first data buffer 106 and second data buffer 107.Wherein first data buffer 106 electrically connects data compressing module 104, data decompression module 105 and aforesaid system port 101.107 of second data buffers electrically connect data compressing module 104, data decompression module 105 and aforesaid port memory 103, those buffer zones 106,107 are used as temporal data, but indivedual temporary data kenel differences, with follow-up explanation in the lump.
When external data desire record is stored in the solid-state storage media of storage device, system port can receive the raw data that is transmitted by external system end 2, this microprocessor 102 must be by the exclusive design of the present invention data compressing module 104 this raw data is given suitably compression factor (as the ratio of 1/N in advance, wherein the value of N is determined by the compress technique that is adopted, compression degree can be with 2 times, 3 times, 4 times ... Deng compression factor) compress operation, make it to become the data of atomic quantification, then via memory bank port one 03 it record is stored in the solid-state storage media 20 again, makes solid-state storage media 20 obtain to be several times as much as the not preceding memory data output of compression by this compression mechanism.
In design of the present invention, system port 101 is before the transmission raw data is compressed, contain raw data is temporary in first data buffer 106 earlier, capture raw data with compression according to certain transfer rate from first data buffer 106 by data compressing module 104 again, and the trace data after will compressing to be sent to second data buffer 107 temporary, by the leading control of microprocessor 102, the trace data that will be temporary in second data buffer 107 again are stored in solid-state storage media 20 via port memory 103 records.
When external system end 2 desires capture storage data from the solid-state storage media 20 of storage device 1, then utilize data decompression module 105, carry out decompression by the trace data that port memory 103 will read out with contrary compress mode in solid-state storage media 20, and, the restoring data of finishing decompression is reached external system end 2 by system port one 01.
On the implementation, port memory 103 is before transmission traceization data decompress, can earlier the trace data be temporary in second data buffer 107, the trace data of desiring unofficial biography from 107 acquisitions of second data buffer by data decompression module 105 are decompressed.Data decompression module 105 will be finished restoring data after the decompression, and to be sent to first data buffer 106 temporary, when comprising restoring data by microprocessor 102 detectings first data buffer 106 again, i.e. the restoring data that control will be desired unofficial biography reaches 2 uses of external system end outward by system port 101.
Above-mentioned data compressing module 104 and data decompression module 105 can or become the mode design implementation of firmware with hardware circuit with the software burning in enforcement of the present invention.
For making the implementer can fully clearly understand the difference of the present invention under uncompressed state and compressive state, in Fig. 2, cooperate circuit diagram the two explanation of comparing of Fig. 1 at this, wherein present embodiment is taked to understand for the implementer as implementation with 2: 1 about compression factor, but is not restriction compression factor scope of the present invention.
When external system end 2 desired to write the raw data archives to storage device 1 of the present invention, the raw data archives that system port 101 stores desire were (as the raw data archives among Fig. 21,2,3,4,5,6,7,8; Wherein, suppose that the raw data archives all possess same data volume after treatment) reach first data buffer 106, log-on data compression module 104 operation immediately after microprocessor 102 detects, and then in regular turn those raw data archives are compressed into corresponding trace data archival (as the trace data archival 1 ', 2 ', 3 ', 4 ', 5 ', 6 ', 7 ', 8 ' among the figure) and export second data buffer 107 to 1/2 compression factor by data compressing module 104 and keep in.At this moment, the raw data archives that the desire that microprocessor 102 can be removed the storage data of first data buffer 106 immediately and require system end 2 to continue to import into other stores, and will be temporary in trace data archivals in second data buffer 107 by port memory 103 and write to solid-state storage media 20 and store.
Please refer to shown in Figure 2, one embodiment of the invention, before the lower left corner is uncompressed state, the raw data archives occupy 8 storage areas in the solid-state storage media 20, and by under the compressive state in the lower right corner as can be known, the trace data archival that the compression factor lower compression with 1/2 that the present invention taked forms, it only occupies 4 storage areas in solid-state storage media 20.In other words, by compress technique of the present invention and in transmission course the communication frequency range of the continual function that makes full use of controller 10 and system port 101, port memory 103, solid-state storage media 20 of the present invention is only changed under the data capacity of desiring storage data by compression mechanism in the storage volume that does not change its hardware, can make solid-state storage media 20 obtain the doubly memory data output before not compressing of N.With 8 storage areas among Fig. 2 is example, under its fully loaded situation, can store 16 trace data archivals after compression, and this quantity is the twice memory data output before not compressing.In addition, the present invention makes it all compress sooner originally on the speed of transmission or storage owing to data are significantly forced down its data volume, advances to promote the access speed of storage device integral body.Moreover the storage device of the present invention's design also stores the less storage device of grade because of compression design only need be bought the consumer on cost is considered except that aforementioned features, can the storage loading amount higher with storing grade possess identical storage effect.
Comprehensively above-mentioned, the present invention openly as above with preferred embodiment, but it is not in order to limiting the present invention, anyly is familiar with this operator, without departing from the spirit and scope of the present invention, change of being done and retouching all belong to protection domain of the present invention.As the change of doing according to conception of the present invention, as only aforesaid data compressing module, data decompression module etc. being independent of outside the controller, but when the function that it produced does not exceed spiritual that instructions and accompanying drawing contain yet, all should be within the scope of the invention.
Claims (5)
1. storage device that can promote memory space, constituted by a controller and at least one solid-state storage media, have in this controller the instruction of a system port that is connected with outside predetermined system end, a disposal system microprocessor and one with the port memory of these solid-state storage medias communications; It is characterized in that: dispose a data compressing module of being located between system port and port memory in this controller, it can be subjected under the triggering of microprocessor, give the ratio of 1/N at the raw data that system port transmitted, it is compressed into the traceization data, and the transmission by this port memory, should the trace data recording be stored in solid-state storage media.
2. the storage device that promotes memory space according to claim 1, it is characterized in that: this storage device possesses a data decompression module is arranged, also be arranged between system port and the port memory, can be by the triggering of microprocessor, make it will be stored in trace data in the solid-state storage media and decompressed and be reduced into raw data and to outside conveyer.
3. the storage device that promotes memory space according to claim 1 and 2 is characterized in that: this storage device possesses one first data buffer, electrically connects this system port, this microprocessor, this data compressing module and this data decompression module.
4. the storage device that promotes memory space according to claim 1 is characterized in that: possess one second data buffer in this controller, electrically connect this port memory, this microprocessor, this data compressing module and this data decompression module.
5. the storage device that promotes memory space according to claim 1 is characterized in that: this data compressing module and data decompression module are disposed in the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03150185 CN1570882A (en) | 2003-07-21 | 2003-07-21 | Memory unit capable of increasing memory capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03150185 CN1570882A (en) | 2003-07-21 | 2003-07-21 | Memory unit capable of increasing memory capacity |
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| Publication Number | Publication Date |
|---|---|
| CN1570882A true CN1570882A (en) | 2005-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03150185 Pending CN1570882A (en) | 2003-07-21 | 2003-07-21 | Memory unit capable of increasing memory capacity |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012794A (en) * | 2010-11-19 | 2011-04-13 | 北京兆易创新科技有限公司 | Solid state disk and access control method thereof, and solid state disk controller |
| CN102483687A (en) * | 2009-09-01 | 2012-05-30 | 马维尔国际贸易有限公司 | Systems and methods for compressing data in non-volatile semiconductor memory drives |
-
2003
- 2003-07-21 CN CN 03150185 patent/CN1570882A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102483687A (en) * | 2009-09-01 | 2012-05-30 | 马维尔国际贸易有限公司 | Systems and methods for compressing data in non-volatile semiconductor memory drives |
| CN102483687B (en) * | 2009-09-01 | 2015-08-26 | 马维尔国际贸易有限公司 | For the system and method compressed the data in nonvolatile semiconductor memory |
| CN102012794A (en) * | 2010-11-19 | 2011-04-13 | 北京兆易创新科技有限公司 | Solid state disk and access control method thereof, and solid state disk controller |
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