CN100478941C

CN100478941C - Electronic reading device

Info

Publication number: CN100478941C
Application number: CNB2006100629841A
Authority: CN
Inventors: 符伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-09-30
Filing date: 2006-09-30
Publication date: 2009-04-15
Anticipated expiration: 2026-09-30
Also published as: CN1932794A

Abstract

The electronic reading equipment relates to interface connecting unit, controlling location and display unit. The former is signed as printer equipment type connecting by physics or network connections to communicate with peripheral equipment and accept the download data as print data. The latter change the format of accepted print data into electronic document that can be played by display unit and the display unit can play it. This electronic reading equipment can eliminate the format restrict of electronic document to actual electronic reading equipment, storage and play any electronic file and document which be printed by common computer or network server to overcome the localization of electronic reading device for broad application and use.

Description

Electronic reading device

[technical field]

The present invention relates to a kind of electronic installation.

[background technology]

Fast development along with semiconductor technology and network technology, people are when reading literal or product of graphic art, more and more bring into use electronic version, e-file is very easy to daily life, has also greatly reduced the consumption of resource simultaneously.Meanwhile, the electronic reader product also comes out thereupon.Electronic reader can be carried by the user easily as books or paper media's file, and possesses the function of playing e-file, can make the convenient reading electronic documents of user like this.The appearance of electronic reader, the scope that may make e-file substitute paper continues to enlarge, thereby makes people's life become convenient, makes consumptive material resources such as paper and other printings or printing obtain more saving.

Please refer to shown in Figure 1ly, existing electronic reader possesses independently hardware carrier.The core comprises: microprocessor control mini system unit, file input/output communication interface unit, file storage unit and screen display unit.

The input/output communication port can be by USB (universal serial bus) or Ethernet interface or the realization of other interfaces, communication unit is connected with common computer or is connected with the webserver with the form of independent peripheral, download the e-file of specific format, file storage unit is stored the e-file of downloading, the e-file that the broadcast display unit can be discerned form is play demonstration, for user's reading and browsing.

The electronic reader of prior art possesses independently hardware carrier, operating system and playout software.Therefore, consider cost restriction, function restriction even the intellecture property factor of electronic reader, present electronic reader can be play the e-file of specific format, such as the e-file of html format, TXT form or other specific formats.Different electronic readers can support the file layout of playing also to be not quite similar.There is restriction in the source electronic document of present electronic reader, is not file, the document that can browse on each common computer or the workstation, can both be played on electronic reader.So just limited the usable range of present electronic reader greatly.

[summary of the invention]

Purpose of the present invention: the electronic reading device that a kind of range of application is wider, be more suitable for popularizing use is provided.

For achieving the above object, the present invention proposes a kind of electronic reading device, comprises main control unit, interface linkage unit, control store unit and plays display unit, and described interface linkage unit, control store unit and broadcast display unit are connected successively; Described interface linkage unit is flagged as the printer apparatus type, connects by physical connection or network, communicates with external unit, and data download is received as print data; Described control store unit carries out the e-file that format conversion becomes can be played display unit identification to the print data that receives; Described broadcast display unit is play demonstration to this e-file; Described main control unit connects respectively and coordinates the described interface linkage unit of control, control store unit and play display unit.

Above-mentioned electronic reading device, described control store unit also compresses the e-file through format conversion; Described broadcast display unit carries out decompress(ion) before playing this e-file.

Above-mentioned electronic reading device, described broadcast display unit comprises liquid crystal display or electric ink paper.

Above-mentioned electronic reading device, described interface linkage unit comprises one or more in the interface circuits such as USB, computing machine parallel communication interface, infrared port, IEEE 1394 buses, bluetooth, perhaps one or more in standard TCP/IP, the LPR network printing connection protocol.Described control store unit comprises Data Receiving buffer memory, format conversion logic module, compression module, storer; Described Data Receiving buffer memory receives print data by described interface linkage unit, and described format conversion logic module is carried out format conversion to this print data, carries out data compression by described compression module again and is stored in the described storer.Described broadcast display unit comprises decompression module, driver module, display screen; Described decompression module will be carried out decompress(ion) from the compressed file that described storer obtains, and described driver module drives described display screen and plays this file through decompress(ion) of demonstration.

Above-mentioned electronic reading device, described format conversion is for to convert described print data to bitmap or polar plot form.Described compression module is JEPG compression module or wavelet algorithm compression module.Described storer is one or more in flash memory, hard disk, micro harddisk, EPROM, CF card, the SD card.Described Data Receiving buffer memory is two-port RAM, single port RAM, FIFO.

Owing to adopted above scheme, electronic reading device of the present invention has been eliminated the restriction of present electronic reading device to electronic document format, make it can store and play any e-file and document that on the common computer or the webserver, can print output, thereby the limitation of electronic reader is overcome, produce widely and use, be more suitable for popularizing and use.

The present invention has enlarged the usage space and the range of application of electronic reader, and it can replace paper media more widely, further reduces the use of resources such as paper, printer material consumption, more environmental protection, saving.

[description of drawings]

Fig. 1 is the electronic reader structural representation of prior art.

Fig. 2 be electronic reading device structure of the present invention the control flow synoptic diagram.

Fig. 3 is the circuit structure block diagram of the embodiment of the invention one.

The interface linkage unit control flow chart of Fig. 4 embodiment one.

Fig. 5 is the circuit structure block diagram of the embodiment of the invention two.

[embodiment]

Also the present invention is described in further detail in conjunction with the accompanying drawings below by specific embodiment.

Please refer to shown in Figure 2ly, electronic reading device of the present invention comprises: main control unit, interface linkage unit, control store unit and play display unit.Interface linkage unit control electronic reader connects by physical connection or network as the printer apparatus type, communicates with print data with common computer or workstation and transmits; The print data that the control store unit receives electronic reader is carried out format conversion, compresses and is stored as the e-file of the format that can be played display unit identification; The broadcast display unit is play the e-file that can discern and is shown on display screen.

Embodiment one:

Please refer to shown in Figure 3ly, this routine electronic reading device comprises: usb circuit, microprocessor, control store unit, play display unit; The control store unit comprises two-port RAM, format conversion logic module, JPEG compression module, flash memory (FLASH); Play display unit and comprise jpeg decompression module, display driver circuit, display buffer, LCDs.

This routine electronic reading device interface linkage unit adopts USB (universal serial bus) (UniversalSerial Bus) agreement.Agreement can drive and the realization of control program control usb circuit by interface by microprocessor as controller.In communication process, control program can be defined as electronic reader USB peripherals (DEVICE), and the define equipment type is type of printer (USB_DEVICE_CLASS_PRINTER).Like this, the user prints on common computer or workstation in e-file, the document, can select electronic reader as printing device, and the type information of e-file, document is sent to electronic reader.The interface linkage unit of electronic reader begins to receive print data after receiving print out task.

Please refer to shown in Figure 4, the control flow of the device of this example is as follows: after the interface linkage unit is received data, be stored in the two-port RAM as buffer memory, the control store unit passes through the format conversion logic module with the print data information in the buffer memory, be converted to and play the bitmap format file that display unit can be discerned, by being stored in the FLASH chip after the file data compression of JPEG compression module with bitmap format, form new e-file then.

Playing display module can be according to user's appointment, from FLASH, take out stored new e-file by microprocessor control, behind jpeg decompression module decompress(ion), drive LCDs by display driver circuit again, the information of e-file, document is presented on the display screen of electronic reader the most at last.

Embodiment two:

Please refer to shown in Figure 5, interface linkage unit in the device of this example, needing to use usb communication agreement and usb communication chip to realize on the communication protocol and in the chip realization, exist more physical connection, protocol type and implementation method to select for use here.For example: physical connection and related protocol and implementation methods such as computing machine parallel communication interface, infrared port (IrDA), IEEE 1394 buses, bluetooth (Bluetooth), network printing connection.The Core Feature of interface linkage unit is: make electronic reader when being connected with common computer or workstation, the device type of definition electronic reader is the printer peripheral hardware, and receives print data.

The algorithm of control store unit and realization carrier and order also have other alternative methods.Not only can convert bitmap to such as format conversion, and can also convert the polar plot form to, this depends on the ability of playing the display unit file identification; Compress mode can not selected the jpeg algorithm compression for use, and selects the wavelet algorithm compression for use, does not perhaps compress; Realize that the Data Receiving buffer memory can not use two-port RAM in the carrier, and use the mode of FIFO, single port RAM time-sharing operation or other, storer also can not use FLASH, and uses hard disk, micro harddisk, EPROM, CF card, SD card etc.The Core Feature of control store unit is: by format conversion control, with the print data information that electronic reader receives, be converted to the new file layout that can be played display unit identification and play, and store; And the order of storage and conversion can be exchanged.

The demonstration carrier of playing display unit also can not be LCDs and drive hardware, also can be electric ink paper or other electronic display units; Decompress(ion) agreement and carrier also can change according to the Scheme Choice of storage control unit.The Core Feature of playing display unit is: control shows carrier, the e-file that can discern in the storage unit is play, and be presented on the electronic display.

Claims

1, a kind of electronic reading device is characterized in that: comprise main control unit, interface linkage unit, control store unit and play display unit, described interface linkage unit, control store unit and broadcast display unit are connected successively; Described interface linkage unit is flagged as the printer apparatus type, connects by physical connection or network, communicates with external unit, and data download is received as print data; Described control store unit carries out format conversion to the print data that receives, and is transformed into the e-file that can be played display unit identification; Described broadcast display unit is play demonstration to this e-file; Described main control unit connects respectively and coordinates the described interface linkage unit of control, control store unit and play display unit.

2, electronic reading device as claimed in claim 1 is characterized in that: described control store unit also compresses the e-file through format conversion; Described broadcast display unit carries out decompress(ion) before playing this e-file.

3, electronic reading device as claimed in claim 1 or 2, it is characterized in that: described interface linkage unit comprises one or more in the interface circuits such as USB, computing machine parallel communication interface, infrared port, IEEE 1394 buses, bluetooth, perhaps one or more in standard TCP/IP, the LPR network printing connection protocol.

4, electronic reading device as claimed in claim 1 or 2 is characterized in that: described broadcast display unit comprises liquid crystal display or electric ink paper.

5, electronic reading device as claimed in claim 1 or 2 is characterized in that: described control store unit comprises Data Receiving buffer memory, format conversion logic module, compression module, storer; Described Data Receiving buffer memory receives print data by described interface linkage unit, and described format conversion logic module is carried out format conversion to this print data, carries out data compression by described compression module again and is stored in the described storer.

6, electronic reading device as claimed in claim 1 or 2 is characterized in that: described broadcast display unit comprises decompression module, driver module, display screen; Described decompression module will be carried out decompress(ion) from the compressed file that described storer obtains, and described driver module drives described display screen and plays this file through decompress(ion) of demonstration.

7, electronic reading device as claimed in claim 5 is characterized in that: described format conversion is for to convert described print data to bitmap or polar plot form.

8, electronic reading device as claimed in claim 5 is characterized in that: described compression module is JEPG compression module or wavelet algorithm compression module.

9, electronic reading device as claimed in claim 5 is characterized in that: described storer is one or more in flash memory, hard disk, micro harddisk, EPROM, CF card, the SD card.