CN1323345C - Data compression/decompression device and its application system - Google Patents

Abstract

The invention relates to a data compression/decompression device and an application system thereof, wherein a data compression/decompression device with an input buffer, an output buffer, a data compression/decompression device and a controller is connected between a data generation device and a data storage device and is used for compressing/decompressing data transmitted between the data generation device and the data storage device and managing an access address transmitted by the data generation device and an address corresponding table of a real address stored in the data storage device. Therefore, the purpose of data compression and storage can be achieved without consuming CPU resources and memory space of the computer and without related software or drivers.

Description

Data compression/decompression device and its application system

technical field

The present invention relates to a data compression/decompression device, in particular to a data compression/decompression device and its application system that do not consume CPU (Central Processing Unit, referred to as CPU) resources and memory (internal memory) space.

Background technique

With the development of information technology, the transmission volume of data in information systems (data is data, hereinafter referred to as data) is also increasing. Therefore, data compression storage has become a commonly used data processing method in computer systems.

Please refer to FIG. 1 , which is a schematic diagram of a conventional computer storage system. In the figure, the computer 110 has a data transmission interface (interface) 111 that can be connected to the hard disk 120 , and accesses the data in the hard disk 120 through the data transmission interface 111 . Among them, in order to increase the storage capacity of the hard disk 120, when the computer 110 intends to store data into the hard disk 120, it will execute a compression/decompression program 112 in the computer 110, so that the data will be compressed before being transmitted to the hard disk 120 for storage . And when wanting to read the data from the hard disk 120, the compression/decompression program 112 in the computer 110 must be used to decompress the read data to restore the data. Although this kind of approach can achieve the purpose of data compression storage, it will consume the CPU resources and memory (memory) space of the computer 110, and it is also necessary to establish relevant software or driver programs in the operating environment of the computer 110. Conducive to the user's use.

It can be seen that the above-mentioned existing data compression/decompression device and its application system still have defects, and need to be further improved urgently. In order to solve the problems existing in data compression/decompression devices and their application systems, relevant manufacturers have tried their best to find solutions, but for a long time no suitable design has been developed, and general products have no suitable structure Being able to solve the above-mentioned problems is obviously a problem that relevant industry players are eager to solve.

In view of the defects in the above-mentioned existing data compression/decompression device and its application system, the inventor actively researches and innovates based on his rich practical experience and professional knowledge in the design and manufacture of this type of product, in order to create a new structure The data compression/decompression device and its application system can improve the general existing data compression/decompression device and its application system, making it more practical. Through continuous research, design, and after repeated trial samples and improvements, the present invention with practical value is finally created.

Contents of the invention

The purpose of the present invention is to overcome the defects existing in the existing data compression/decompression device and its application system, and provide a new type of data compression/decompression device and its application system. The technical problem to be solved is to make it The purpose of data compression and storage can be achieved without consuming the CPU resources and memory space of the computer, and without the need for related software or drivers, which is very convenient for users to use, and thus more suitable for practical use.

The purpose of the present invention and the solution to its technical problems are achieved by adopting the following technical solutions. A data compression/decompression device according to the present invention is suitable for compressing/decompressing a data transmitted between a data generating device and a data storage device, which includes: an input buffer for buffer storage The input data; an output buffer for buffering and storing the output data; a data compressor/decompressor coupled to the output buffer for compressing/decompressing the input data and outputting the output data data is stored in the output buffer; and a controller, coupled to the input buffer, the output buffer and the data compressor/decompressor, is used to control the data generating device, the input buffer, the output buffer and the Data transmission between the data storage devices, and control of compression/decompression work and management of an address correspondence table between the access address transmitted by the data generation device and the actual address stored in the data storage device.

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures.

The aforementioned data compression/decompression device, wherein the controller includes: a data generation control unit for controlling the data transmission between the data generation device, the input buffer and the output buffer; a data storage control unit A unit, used to control the data transmission among the data storage device, the input buffer and the output buffer; a data fetcher, used to obtain the data from the input buffer, and fetch the data that should be compressed/ The decompression part is sent to the data compressor/decompressor; and a main control unit is used to coordinate and control the data generation control unit, the data storage control unit and the data extractor, and manage the address correspondence table.

In the aforementioned data compression/decompression device, the data generation device is one of a host computer, a notebook computer, a microprocessor, an interface card, and a router.

In the aforementioned data compression/decompression device, the data storage device is one of a hard disk, a floppy disk, a read-write optical drive, a magnetic optical device, a digital video recorder, and a flash memory card.

The purpose of the present invention and the solution to its technical problems are also achieved by the following technical solutions. A data compression/decompression device application system according to the present invention includes: a data storage device with a data transmission interface; a data generation device for accessing the data in the data storage device through the data transmission interface a data; and a data compression/decompression device, coupled to the data generating device and the data storage device via the data transmission interface, for compressing/decompressing the data transmitted between the data generating device and the data storage device , and manage an address correspondence table between the access address sent by the data generating device and the actual address stored in the data storage device.

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures.

The aforementioned data compression/decompression device application system, wherein the data compression/decompression device includes: an input buffer for buffering and storing the input data; an output buffer for buffering and storing the output data ; A data compression/decompression device, coupled to the output buffer, for compressing/decompressing the input data, and storing the output data in the output buffer; and a controller, coupled to the input buffer The device, the output buffer and the data compression/decompression device are used to control the data transmission between the data generation device, the input buffer, the output buffer and the data storage device, and to control the compression/decompression work And manage the address correspondence table.

The aforementioned data compression/decompression device application system, wherein the controller includes: a data generation control unit, used to control the data transmission between the data generation device, the input buffer and the output buffer; a data storage a control unit, used to control the data transmission between the data storage device, the input buffer and the output buffer; a data extractor, used to obtain the data from the input buffer, and obtain the compressed data of the data /Decompression part, sent to the data compressor/decompressor; and a master control unit, used to coordinate and control the data generation control unit, the data storage control unit and the data collector, and manage the address correspondence table .

In the aforementioned data compression/decompression device application system, the data generating device is one of a host computer, a notebook computer, a microprocessor, an interface card, and a router.

The aforementioned data compression/decompression device application system, wherein the data storage device is one of hard disk, floppy disk, read-write optical drive, magnetic optical device, digital video recorder and flash memory card.

In the aforementioned data compression/decompression device application system, the data transmission interface is one of IDE, 1394, SCSI, serial ATA, serial attached SCSI, PCMCIA and USB.

Compared with the prior art, the present invention has obvious advantages and beneficial effects. As can be seen from the above technical solutions, in order to achieve the aforementioned object of the invention, the main technical contents of the present invention are as follows:

The present invention proposes a data compression/decompression device and its application system. In the data compression/decompression application system, in addition to the data compression/decompression device, it also includes a data generation device and a data storage device. Wherein, the data storage device has a data transmission interface, the data generation device is used to access the data in the data storage device through the data transmission interface, and the data compression/decompression device is coupled to the data generation device and the data storage device through the data transmission interface , for compressing/decompressing the data transmitted between the data generating device and the data storage device, and managing the address correspondence table between the access address sent by the data generating device and the actual address stored in the data storage device.

Wherein, the data compression/decompression device includes: an input buffer, an output buffer, a data compression/decompression device and a controller. The input buffer is used to buffer and store input data, and the output buffer is used to buffer and store output data. The data compressor/decompressor is coupled to the output buffer for compressing/decompressing the input data and storing the output data in the output buffer. The controller is coupled to the input buffer, the output buffer and the data compression/decompression device to control the data transmission between the data generation device, the input buffer, the output buffer and the data storage device, and to control the compression/decompression The work is carried out and the aforementioned address correspondence table is managed.

In one embodiment, the controller includes: a data generation control unit, a data storage control unit, a data collector and a main control unit. Wherein, the data generation control unit is used to control the data transmission between the data generation device, the input buffer and the output buffer, and the data storage control unit is used to control the data transmission between the data storage device, the input buffer and the output buffer. The data extractor is used for obtaining the input data from the input buffer, extracting the part of the data that should be compressed/decompressed, and sending it to the data compressing/decompressing device. The main control unit is used for coordinating and controlling the data generation control unit, the data storage control unit and the data fetcher, and managing the aforementioned address correspondence table.

The data generating device can be one of host computer (Host), notebook computer (Notebook), microprocessor (Microprocessor), interface card (Interface Card) or router (Router). The data storage device can be a hard disk (Hard Disk), a floppy disk (Floppy Disk), a read-write optical drive (CD-RW), a magnetic optical device (Magnetic Optical drive, referred to as MO), a digital video recorder (Digital Video Recorder) and or fast One of them such as Flash Memory Card. The data transmission interface can be IDE (Integrated Device Electronics, referred to as IDE), 1394, SCSI (SmallComputer System Interface, referred to as SCSI), serial ATA (Serial ATA), serial attached SCSI (Serial attached SCSI), PCMCIA (Personal ComDuter MemoryCard International Association (PCMCIA for short) or USB (Universal Serial Bus, USB for short).

As can be seen from the above, the data compression/decompression device and its application system of the present invention are to connect a data storage device with an input buffer, an output buffer, a data compression/decompression device and a controller between the data generation device and the data storage device. The compression/decompression device is used to compress/decompress the data transmitted between the data generation device and the data storage device, and manages the address correspondence between the access address transmitted by the data generation device and the actual address stored in the data storage device surface. Therefore, the purpose of data compression and storage can be achieved without consuming the CPU resources and memory space of the computer, and without the need for related software or drivers.

By means of the above-mentioned technical solution, the present invention has at least the following advantages: the data compression/decompression device and its application system of the present invention can be connected between the data transmission interfaces of devices such as computers and hard disks, so as to perform the required data compression/decompression Compress the work and manage its address correspondence table, so the purpose of data compression and storage can be achieved without consuming the CPU resources and memory space of the computer, and without the need for related software or drivers, which is very convenient for users usage of.

In summary, the data compression/decompression device and its application system of the special structure of the present invention can achieve data compression without consuming the CPU resources and memory space of the computer, and without the need for related software or drivers. The purpose of compressed storage is very convenient for users to use. It has the above-mentioned many advantages and practical value, and there is no similar structural design publicly published or used in similar products, so it is indeed innovative. It has made great progress, and has produced easy-to-use and practical effects, and has improved multiple functions compared with the existing data compression/decompression devices and their application systems, so it is more suitable for practical use, and has wide application value in the industry , It is a novel, progressive and practical new design.

The above description is only an overview of the technical solutions of the present invention. In order to understand the technical means of the present invention more clearly and implement them according to the contents of the description, the preferred embodiments of the present invention and accompanying drawings are described in detail below.

Description of drawings

FIG. 1 is a schematic diagram of a conventional computer storage system.

FIG. 2 is a schematic block diagram of an application system of a data compression/decompression device according to a preferred embodiment of the present invention.

FIG. 3 is a schematic block diagram of disposing the data compression/decompression device inside the data storage device in FIG. 2 .

FIG. 4 is a schematic block diagram of disposing the data compression/decompression device inside the data generating device in FIG. 2 .

FIG. 5 is a schematic block diagram of a data compression/decompression device according to a preferred embodiment of the present invention.

110: Computer 111: Data (data) transmission interface

112: Data compression/decompression program 120: Hard disk

200: data compression/decompression application system 210, 410: data generation device

220: Data storage device 320: Data storage device

230, 330, 430: data compression/decompression device 231: input buffer

232: Output buffer 233: Data compression/decompression

240: Controller 241: Data generation control unit

242: Data storage control unit 243: Data collector

245: Main control unit

Detailed ways

The specific implementation, structure, features and functions of the data compression/decompression device and its application system according to the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.

Please refer to FIG. 2 , which is a schematic block diagram of an application system of a data compression/decompression device according to a preferred embodiment of the present invention. In the figure, the data compression/decompression application system 200 includes a data generation device 210 , a data storage device 220 and a data compression/decompression device 230 .

Wherein, the data generating device 210 is, for example, one of a host computer (Host), a notebook computer (Notebook), a microprocessor (Microprocessor), an interface card (Interface Card) or a router (Router). The data storage device 220 is, for example, a hard disk (Hard Disk), a floppy disk (Floppy Disk), a read-write optical drive (CD-RW), a magnetic optical device (Magnetic Optical drive, referred to as MO), a digital video recorder (Digital Video Recorder) and Or one of the flash memory card (Flash Memory Card)

As shown in the figure, the data generating device 210 and the data storage device 220 are respectively connected via, for example, IDE (Integrated Device Electronics, IDE for short), 1394, SCSI (Small Computer System Interface, SCSI for short), Serial ATA (Serial ATA), serial The data transmission interfaces 211 and 221 attached to one of SCSI (Serial attached SCSI), PCMCIA (Personal Computer Memory Card International Association, referred to as PCMCIA) or USB (Universal Serial Bus, referred to as USB) are connected to the data compression/decompression device 230 .

When the data generating device 210 intends to access the data in the data storage device 220 through the data transmission interfaces 211 and 221, it will be compressed/decompressed between the data generating device 210 and the data storage device 220 through the data compression/decompression device 230 data transmitted. Wherein, because the data transmitted by the data generating device 210 has been compressed, the space occupied by it will be smaller than the perception of the data generating device 210 . Therefore, the data compression/decompression device 230 also needs to manage the address correspondence table between the access address transmitted by the data generation device 210 and the actual address stored in the data storage device 220 .

In Fig. 2, although the data generation device 210, the data storage device 220 and the data compression/decompression device 230 are all shown as individual independent devices, those skilled in the art should know that the actual composition thereof can be changed. of. For example, as shown in Figure 3, the data compression/decompression device 330 can be arranged inside the data storage device 320, and as shown in Figure 4, the data compression/decompression device 430 can be arranged inside the data generation device 410 .

Please refer to FIG. 5 , which is a schematic block diagram of a data compression/decompression device according to a preferred embodiment of the present invention. In the figure, the data compression/decompression device 230 includes an input buffer 231 , an output buffer 232 , a data compression/decompression device 233 and a controller 240 . Wherein, the controller 240 includes a data generation control unit 241 , a data storage control unit 242 , a data extractor 243 and a main control unit 245 .

In FIG. 5 , the solid line part represents the data flow, and the dotted line part represents the control signal. As shown in the figure, the data generation control unit 241 will control the data transmission between the data generation device 210, the input buffer 231 and the output buffer 232, for example, buffering and storing the input data from the data generation device 210 in the input buffer 231, Or take out the output data buffered and stored in the output buffer 232 and send it to the data generating device 210 . The data storage control unit 242 will control the data transmission between the data storage device 220, the input buffer 231 and the output buffer 232, for example, buffer the input data obtained by the data storage device 220 into the input buffer 231, or take out the buffer storage The output data in the output buffer 232 is sent to the data storage device 220 .

In addition, the data extractor 243 will obtain the input data from the input buffer 231, and extract the part of the data that should be compressed/decompressed. For example, the storage address sent by the data generating device 210 does not need to be compressed, but should be compressed in advance. separated, and then sent to the data compressor/decompressor 233. The data compressor/decompressor 233 is used to compress/decompress the data from the data extractor 243 and store the output data in the output buffer 232 . The main control unit 245 is used to coordinate and control the data generation control unit 241, the data storage control unit 242 and the data fetcher 243, and manage the access address sent by the data generation device 210 and the actual address stored in the data storage device 220. The address correspondence table of the address can achieve the purpose of data compression and storage.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this professional technology Personnel, without departing from the scope of the technical solution of the present invention, when the technical content disclosed above can be used to make some changes or modifications to equivalent embodiments with equivalent changes, but all the content that does not depart from the technical solution of the present invention, according to the technical content of the present invention Technical Essence Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solution of the present invention.

Claims (10)

1. A data compression/decompression device, suitable for compressing/decompressing a data transmitted between a data generating device and a data storage device, characterized in that it includes: an input buffer for buffering and storing the input data; an output buffer for buffering and storing the outputted data; a data compressor/decompressor, coupled to the output buffer, for compressing/decompressing the input data, and storing the output data in the output buffer; and a controller, coupled to the input buffer, output buffer and the data compressor/decompressor, for controlling the data transmission between the data generating device, the input buffer, the output buffer and the data storage device, It also controls the compression/decompression work and manages an address correspondence table between the access address sent by the data generating device and the actual address stored in the data storage device. 2. The data compression/decompression device according to claim 1, wherein said controller comprises: a data generation control unit, used to control the data transmission between the data generation device, the input buffer and the output buffer; a data storage control unit, used to control data transmission between the data storage device, the input buffer and the output buffer; a data extractor, used to obtain the data from the input buffer, and extract the part of the data that should be compressed/decompressed, and send it to the data compressor/decompressor; and A main control unit is used for coordinating and controlling the data generation control unit, the data storage control unit and the data collector, and managing the address correspondence table. 3. The data compression/decompression device according to claim 1, wherein said data generation device is one of a host computer, a notebook computer, a microprocessor, an interface card, and a router. 4. The data compression/decompression device according to claim 1, wherein said data storage device is a hard disk, a floppy disk, a read-write optical drive, a magnetic optical device, a digital video recorder, and a flash memory card. one. 5. A data compression/decompression device application system, characterized in that it comprises: A data storage device with a data transmission interface; a data generating device for accessing a data in the data storage device via the data transmission interface; and A data compression/decompression device, coupled to the data generation device and the data storage device through the data transmission interface, for compressing/decompression of the data transmitted between the data generation device and the data storage device, and managing the data An address correspondence table of the access address sent by the data generating device and the actual address stored in the data storage device. 6. The data compression/decompression device application system according to claim 5, wherein said data compression/decompression device comprises: an input buffer for buffering and storing the input data; an output buffer for buffering and storing the outputted data; a data compressor/decompressor, coupled to the output buffer, for compressing/decompressing the input data, and storing the output data in the output buffer; and a controller, coupled to the input buffer, output buffer and the data compressor/decompressor, for controlling the data transmission between the data generating device, the input buffer, the output buffer and the data storage device, And control the progress of the compression/decompression work and manage the address correspondence table. 7. The data compression/decompression device application system according to claim 6, wherein said controller includes: a data generation control unit, used to control the data transmission between the data generation device, the input buffer and the output buffer; a data storage control unit, used to control data transmission between the data storage device, the input buffer and the output buffer; a data extractor, used to obtain the data from the input buffer, and extract the part of the data that should be compressed/decompressed, and send it to the data compressor/decompressor; and A main control unit is used for coordinating and controlling the data generation control unit, the data storage control unit and the data collector, and managing the address correspondence table. 8. The data compression/decompression device application system according to claim 5, wherein said data generation device is one of a host computer, a notebook computer, a microprocessor, an interface card and a router. 9. The data compression/decompression device application system according to claim 5, wherein said data storage device is a hard disk, a floppy disk, a read-write optical drive, a magnetic optical device, a digital video recorder, and a flash memory card one of them. 10. The data compression/decompression device application system according to claim 5, wherein the data transmission interface is one of IDE, 1394, SCSI, serial ATA, serial attached SCSI, PCMCIA and USB .