CN2397536Y

CN2397536Y - Digital code book-reader

Info

Publication number: CN2397536Y
Application number: CN 99232561
Authority: CN
Inventors: 程世平; 平健
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-09-08
Filing date: 1999-09-08
Publication date: 2000-09-20
Anticipated expiration: 2009-09-08

Abstract

The utility model relates to a digital book-reader, which is composed of a microprocessor, a clock, a dynamic memory, a memory, a general serial interface, an infrared interface, a high-speed serial interface, a data buffer, an address buffer, a liquid crystal display, a keyboard network, a touch screen, a power supply module, a modem, a memory card and a memory card control circuit. Digital information is stored in a memory card. A plug socket of the control circuit of the memory of the book-reader corresponds to the memory card. After the memory card is inserted, the content of the card is directly read through the liquid crystal display. The book-reader can also be used as an internet download carrier, can directly download various information from relevant website of internet, or download books from website of booksellers. The utility model is an electronic book-reader with complete functions.

Description

Digital book reader

The utility model relates to a kind of digital book reader.

Along with development of science and technology, numerous books are concentrated on the very thin card, be easy to carry and store, be no longer a dream.

In recent years, enormous amount has appearred, cross media publishing various in style, though it can accomplish sound, as, figure, Wen Bingmao, support but must use a computer when reading, and the computing machine volume is big, and inconvenience is carried, price is higher, operation is relatively complicated, these effects limit the development of cross media publishing.

Because the rapid outburst of digital circuit, integrated circuit and large scale integrated circuit, in global evolution a gigantic and vigorous digital revolution.Electronic book also arises at the historic moment, and has fabulous development prospect.

It is good that the purpose of this utility model designs a kind of result of use in order to cooperate the reading electronic book periodical exactly, can fully satisfy the digital book reader of customer requirements.

The utility model has satisfied above-mentioned purpose of design, it comprises microprocessor, clock, dynamic storage, storer, conventional serial line interface, infrared interface, HSSI High-Speed Serial Interface, data buffering, address buffer, liquid crystal display, the keyboard network, touch-screen and power module, corresponding respectively each interface that connects of microprocessor, buffer circuit and storer, it is characterized in that reader has modulator-demodular unit and storage card control circuit, modulator-demodular unit respectively with data bus, address bus, conventional serial line interface, clock links to each other with keyboard controller, storage card control circuit input end has socket corresponding with storage card, output terminal respectively with microprocessor data bus, address bus is connected with control bus is corresponding.

In order to make e-book sound Wen Bingmao, introduced Sound Processor Unit in this digital book reader circuit, this Sound Processor Unit input end is connected system bus and the direct storage control unit of microprocessor respectively, and output terminal links to each other with loudspeaker.

The storage card insertion of record digital book is had in the reader socket of said structure characteristics, get final product the various information on the quick display card on the LCDs, with the exception of this, the modulator-demodular unit of this reading machine internal configurations, can directly download books from the publisher website, also can be with this reader as the Internet download body, the relevant website from the internet is downloaded all kinds of data that various readers like.

The utility model also has the acoustic processing function, makes people play out voice messaging when reading needs.

The utility model has satisfied the reading needs of electronic book, it is little to make a large amount of book contents be produced on volume, on the lightweight storage card, as long as have this electronic reader, just can carry required stack room content, its appearance, the electronic book that people has been strided forward really be of practical significance uses the epoch.

Describe the utility model in detail below in conjunction with accompanying drawing:

Fig. 1 reader main system block diagram

Fig. 2 central processing unit circuit diagram

The total line chart of Fig. 3 central processing unit

Fig. 4 central processing unit power circuit diagram

Fig. 5 liquid crystal display control circuit figure

Fig. 6 clock control circuit figure

Fig. 7 memory circuitry figure

Fig. 8 standard serial mouth and infrared interface control circuit figure

Fig. 9 key circuit figure

Figure 10 touch screen interface circuit diagram

Figure 11 sound treatment circuit figure

Figure 12 data address buffer circuit figure

Figure 13 sheet is translated decoding circuit figure selectively

Figure 14 USB (universal serial bus) circuit diagram

Figure 15 power charging circuit figure

Central processing portion is mainly by clock circuit U9 (DS12887A), central processing unit U1 (7406), U2A (PPc403GA-A) and central control unit U2C (PPc403GA-G), and electric power system U2B (PPc403GA-C) constitutes, clock circuit provides work clock and real clock for system, it contains personal battery, but non-stop run 20 years, central processing unit and central control unit process information, control system work, response is interrupted, DMA, data address is provided, and dynamic ram refreshes and control information; Electric power system provides power supply support and information about power for system works, when no external power source, and the self-contained battery power supply.

Memory portion mainly latchs U12-13 (SIMM72, AM29Fo32B, MASKINGROM), dynamic ram U14 (AM29F032B) FlashROM (MASKINGROM) by buffering, and the external ROM card is formed, system data bus is connected to data buffer U21～28 (74F245) by the cpu data line and forms, address bus is connected to address buffer by the cpu address wire and forms, and dynamic ram provides data high-speed data transmission intermediary between cpu and storer for improving system running speed.The dynamic memory bar that 4M or 8M are arranged in the native system, the power down that is provided with 32M in the system is drop-out ROM not, and the user can store information repeatedly or wipe, and external memory card provides outside expanded function for the user, make the information stores expansion easier, its capacity can be up to 16M.

Communications portion is made of serial communication port U30,31 (MC68HC5JB3), usb communication, the transmitting-receiving of IrDA infrared ray and modulator-demodular unit U11 (MAX3130).In the system, a slice integrated circuit drove and forms two kinds of interfaces during RS-232 communicated by letter with IrDA, they connect the serial port control module control by CPU, usb communication drives by forming usb communication in the USB controller connecting system bus, drive communication protocol outward by CPU, modulator-demodular unit by control of Moden controller and driving, forms modem portion in system.

I/O is made up of button U15 (MM74C922), touch-screen and interface U17 (7ADS7843), LCD control U5, U6 (62256), U7 (74ALS245) and sound dsp processor U18-20 (MSPSOC32N).Button is 5 matrix press-key in the system, drives the button network by keyboard controller.LCD is driven by LCD controller, changes the brightness and contrast by potentiometer, and acoustic processing is handled voice data by dsp chip, drives 8 Ω loudspeakers.

Notebook data book reader each several part annexation is as follows:

Power supply: primary power is formed with charging network mutually by external power source and self-contained battery, is connected to power management IC, and miniature button cell is given this IC power supply.This IC forms transformation+and the 3.3V power supply system uses by chips, and-24V power supply is supplied with liquid crystal display and is used.

CPU: the serial port control module is connected to serial port, IrDA combination control IC, and IC controls IrDA infrared port and RS-232 breakout box respectively, and breakout box provides touch-screen serial communication interface and RS-232 interface.

The interrupt control unit is connected to clock and keyboard interrupt pin respectively, manages and respond the interrupt request that they send.

The DMA control module is connected to acoustic processing DSP, manages and respond the DMA request that it sends.

Data line D0～D31 is connected to data buffer, forms 32 bit data bus.

Address wire A6～A29 is connected to address buffer, forms 24 bit address buses.

Modulator-demodular unit is connected into data bus, address bus, interrupt control and clock.

The CPU of notebook data book reader adopts the POWER PC series of IBM Corporation, POWER PC has adopted from preceding higher risc instruction set, be 32 RISC embedded controllers, 32 bit address line addressable 4GB, 32 32 bit registers are arranged, make the easier realization of software, its higher integrated level makes circuit simpler and more direct clear, and it has lower power consumption and good thermal stability;

Storer is adopted 16M Flash ROM, can extend to 32M, and 16M RAM can extend to 32M, the outside IC-card storer that adopts;

The RS-322 communication port that communication port is provided with, IrDA infrared ray transmitting-receiving port and USB port can be fit to various user;

The TI MSPOC32N of company chip is adopted in acoustic processing, the audio files of decodable code high compression ratio form, and integrated D/A converter can directly drive load;

LCD adopts high definition, 640 * 480 resolution, 10 " CD display;

Power supply is furnished with externally fed power interface and internal cell, can fully guarantee reader work power supply;

Highc/c is adopted in software development ⁺⁺The advanced developing instrument that provides by IBM Corporation is provided;

The MODFN of reader internal configurations can directly download books from the publisher website, also can be with this reader as the Internet download body, and the relevant website from the internet is downloaded the data that the reader liked.

The utility model than existing reader have that function is strong, integrated level is high, circuit is simple and direct, low in energy consumption, Good stability, remarkable advantage applied widely will be played a positive role for popularizing of electronic book.

Claims

1, digital book reader, comprise microprocessor, clock, dynamic storage, storer, conventional serial line interface, infrared interface, HSSI High-Speed Serial Interface, data buffering, address buffer, liquid crystal display, the keyboard network, touch-screen and power module, corresponding respectively each interface that connects of microprocessor, buffer circuit and storer, it is characterized in that reader has modulator-demodular unit and storage card control circuit, modulator-demodular unit respectively with data bus, address bus, conventional serial line interface, clock links to each other with keyboard controller, storage card control circuit input end has socket corresponding with storage card, output terminal respectively with microprocessor data bus, address bus is connected with control bus is corresponding.

2, digital book reader as claimed in claim 1 is characterized in that having Sound Processor Unit, and this Sound Processor Unit input end is connected system bus and the direct storage control unit of microprocessor respectively, and output terminal links to each other with loudspeaker.