KR20010105523A - Apparatus for advanced eBook terminal - Google Patents

Abstract

An optical device (300) comprises a multilayer structure, formed by wafer bonding, incorporating in sequence a silicon dioxide layer (304), a buried silicide layer (306), a contact layer (308) and a silicon surface layer (310). The surface layer (310) is selectively etched to form an exposed rib (312). An upper surface of the rib (312) is doped to form an elongate electrode (314) therealong. The surface layer (310) is selectively etched to the contact layer (308) in regions remote from the rib (312) to form via channels (316a, 316b) for making electrical connection to the contact layer (308). The rib (312) forms a waveguide along which radiation propagates. When the electrode (314) is biased relative to the contact layer (308), charge carriers are injected into the rib (312) and induce refractive index changes in a central region (324) thereof where most of the radiation propagates along the rib (312). The silicide layer (306) provides an efficient current conduction path for injecting the carriers, thereby providing enhanced device operating bandwidth and reduced power dissipation.

Description

Apparatus for advanced eBook terminal

The present invention relates to an improved e-book device, and more particularly, to an e-book device having not only a recording / playback function of music / voice but also a PDA (Personal Digital Assistants), a web browser, and an image storage function Relates to a device.

In general, eBooks provide viewers with the ability to view files protected by proprietary editing software written by publishers, and Palm Pilot or US Microsoft, where mobility is required. It provides a viewer program that runs on PDA, a system using Windows CE. Windows CE is an operating system that integrates non-computers and computers, including PDAs, digital TVs, set-top boxes, mobile phones, and web phones, through a software environment. In addition, the e-book consists of the e-book body, a program for transferring and managing files from the computer to the e-book body, and an editing program for making a book. The file formats supported are HTML (HyperText Markup Language) and Microsoft. Word of the company, Hangul and Adobe's PDF below. Microsoft's Word doesn't support Portable Document Format (PDF), and you'll need to convert it to HTML or TEXT to see it.

However, such a general e-book has the following problems.

When a user reads using an e-book, he / she cannot hear music / voice, cannot load various documents necessary for the e-book, and cannot use the Internet network. In addition, the PDA function can not be performed simply and there is no video storage function required.

Accordingly, an object of the present invention is to provide an improved e-book terminal device capable of simultaneously listening to music / voice when a user reads using an e-book.

Another object of the present invention is to provide an improved e-book device capable of loading documents such as PDF, HTML, DOC, HWP, and various kinds of document files.

Another object of the present invention is to provide an improved e-book terminal device which can be used as an internet terminal by porting a web browser.

It is still another object of the present invention to provide an improved e-book terminal device which can easily use a PDA function using an application program.

Another object of the present invention is to provide an improved e-book terminal device which can store and use an image.

1 is a block diagram of an improved e-book terminal device according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100: central processing unit 101: program ROM

102: built-in flash memory 103: display controller

104: display device 105: input switch device

106: communication device 107; Decoder

108: analog / digital converter 109: digital / analog converter

110: data RAM 111: external flash memory

Features of the present invention for achieving the above object, the central processing unit for executing a dedicated program, and control using the executed dedicated program; A program ROM for transmitting the dedicated program stored in the CPU to execute the dedicated program, to the CPU; A built-in flash memory that stores various document files and music files, and stores external voices and processes them under control of the CPU; A display controller for displaying and controlling the titles of various documents and music files transmitted from the CPU and various kinds of information required by the user; A display device displaying titles of various documents and music files transmitted from the display controller and various kinds of information necessary for the user; An input switch device for moving pages of an e-book and reproducing music and voice; A communication device for connecting the document and music file of the e-book to mount the built-in flash memory; A decoder for decoding a music file stored in the built-in flash memory; An analog / digital converter for converting a voice analog signal transmitted from a microphone into a digital signal; A digital / analog converter for converting a digital signal transmitted from the decoder into an analog signal and transmitting the same to an earphone or a speaker; And a data RAM for storing initial data, temporary data, variables, etc. necessary for a dedicated program executed in the CPU.

Preferably, the external flash memory may further include an external flash memory installed externally in consideration of expandability when the internal flash memory lacks capacity to support a smart media, a compact flash, a memory stick, and the like.

Preferably, the CPU is characterized in that the general-purpose embedded processor, such as AMD, Intel, ARM.

Preferably, the input switch device is characterized in that the button switch to move the page of the e-book forward / backward or up, down, left and right.

Preferably, the input switch device is a toggle switch to toggle between the e-book mode and the music playback mode.

Preferably, the input switch device is characterized in that the touch screen device.

Preferably, the input switch device is characterized in that the stylus device.

Preferably, the input switch device is characterized in that the control panel attached to the wire line of the phone.

Preferably, the input switch device is characterized in that the keyboard for the input of data used in the PDA or the use of a web browser.

Preferably, the communication device is a device that allows the user to download a file directly from the remote server by connecting to the Internet or a remote server.

Preferably, the communication device is characterized in that the device to be downloaded to the built-in flash memory using a file transfer program running on a computer.

Preferably, the decoder decodes a music file encoded in a format such as WAV, MID, MP3, RA, AAC, etc. stored in the internal flash memory.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an improved e-book terminal device according to the present invention.

1, the present invention executes a dedicated program and centrally processes a dedicated program stored in the central processing unit 100 and the central processing unit 100 for controlling by using the executed dedicated program to execute the dedicated program. Program ROM 101 for transmitting to the device 100, a built-in flash memory 102 for storing various document files and music files, and storing the external voice to process under the control of the CPU 100, central processing Display controller 103 for controlling titles of various documents and music files transmitted from the device 100 and various information required for the user, titles of various documents and music files transmitted from the display controller 103 and various information required for the user. Display device 104 for displaying a text, an input switch device 105 for moving a page of an e-book, and reproducing music and voice, a document of a e-book, and a musicalization A communication device 106 for connecting work to the built-in flash memory 102, a decoder 107 for decoding music files stored in the built-in flash memory 102, and a voice analog signal transmitted from a microphone MIC Analog / digital converter 108 for converting the signal, digital / analog converter 109 for converting the digital signal transmitted from the decoder 107 to an analog signal and transmitting to the earphone (EP) or speaker (SP), the central processing unit It consists of a data RAM 110 for storing the initial data, temporary data, variables, etc. required for the application program executed in (100).

In addition, the external flash memory 111 that supports smart media, compact flash, memory stick, etc. by mounting externally in consideration of expandability when the capacity of the internal flash memory 102 is insufficient. ) Is further included.

The present invention will be described in detail as follows.

The central processing unit 100 uses a general-purpose embedded processor such as AMD, Intel, ARM, etc. The central processing unit 100 reads and executes a dedicated program from the program ROM 101, and performs various inputs and outputs according to the type of the dedicated program. To control the device.

In this case, the program ROM 101 may include a power on self test (POST) program, a viewer program, which is a document file viewer, a music file playback program, a voice recording and playback program, a communication program, a PDA program, a web browser program, and an image storage. And dedicated programs such as a restoration program and a power control program.

The POST program performs simple diagnosis and initialization of the central processing unit 100 and various input / output devices when the device of the present invention is first started, and the viewer program is stored in the internal flash memory 102 or the external flash memory 111. After reading the document file, the format of the stored document is decoded, and the document file is transmitted to the display device 104 according to the corresponding format.

In this case, the internal flash memory 102 stores various document files required for an e-book and a music file for listening to music, and converts the recorded voice into a file when needed, and the external flash memory 111 stores the internal flash memory. Considering the scalability of the capacity of 102, it supports various standard external expansion storage devices (not shown), such as externally mounted smart media, compact flash and memory stick.

The music file playback program reads music files stored in the internal flash memory 102 or the external flash memory 111 and transmits them to the decoder 107 at predetermined sampling times. The music files transmitted to the decoder 107 are digital / analog. The converter 109 converts the analog value into an analog value and sends the same to the earphone EP or the speaker SP.

The voice recording and reproducing program allows the voice input to the microphone MIC to be stored in the internal flash memory 102 or the external flash memory 111 in the form of a predetermined voice standard file via the analog / digital converter 108. At this time, the voice file stored in the internal flash memory 102 or the external flash memory 111 is transmitted to the earphone EP or the speaker SP through the digital / analog converter 109 again.

Two types of programs are used for the communication program used in the communication device 106 according to a method of downloading a document file or a music file of an e-book. Directly connected programs allow users to directly connect to remote servers using public switched telephone network (PSTN) modems, Ethernet, xDSL, Intergrated Services Digital Network (ISDN), cable modems, and wireless Internet. The second program is a program that uses a personal computer (not shown). The RS-232 serial port, parallel printer port, USB port, infrared port, To the internal flash memory 102 or the external flash memory 111 via IEEE 1394, Blue Tooth, or the like. Executing a function for downloaded to accept data for the PDA. Such a communication program performs a role of downloading a file by accessing a remote server or a personal computer.

PDA program includes application programs such as notepad, calendar, address book, electronic calculator, electronic clock, alarm function, unit converter, etc. In this case, a keyboard (not shown) or an external keyboard is used for data input. It is available.

When a web browser program downloads a document file or a music file of an e-book from a remote server, the web browser program can use a communication device 106 that connects to an Internet network (not shown). Charged Couple Device) Instantly store digital images in the built-in flash memory 102 or external flash memory 111 by using a camera (not shown) and output the images through the display device 104 if desired by the user. Do it.

The power control program controls the internal power of the central processing unit 100 and the power of the input / output device so as to efficiently manage the predetermined power in consideration of the mobility of the user and to use it as long as possible.

On the other hand, the display device 104 connected to the display controller 103 shows the title of various document files and music files of the e-book to the user, and is used as a user interface for displaying various information necessary for the user.

The input switch device 105 includes a button switch for moving the page of the e-book forward / backward or up / down / left / right, a toggle switch for toggling the e-book mode / music playback mode, and a touch. ) A screen, a stylus, a control panel (not shown) attached to an earphone (EP) wire line, a keyboard for inputting data used in a PDA or using a web browser.

The decoder 107 decodes the music file stored in the internal flash memory 102 or the external flash memory 111 to increase the reproduction quality of the music quality and reduce the burden on the central processing unit 100. At this time, the music file stored in the internal flash memory 102 or the external flash memory 111 is a file encoded in a predetermined format such as WAV, MID, MP3, RA, and AAC.

The digital-to-analog converter 109 converts the music file decoded and transmitted by the decoder 107 into an analog signal for the user to listen to and then sends them to the earphone EP or the speaker SP.

The voice signal transmitted to the analog / digital converter 108 through the microphone MIC is converted into a digital signal by the analog / digital converter 108 and stored in the internal flash memory 102 or the external flash memory 111. The data RAM 110 connected to the CPU 100 stores initial data, temporary data, and variables necessary for various programs.

As described above, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

As a result, according to the improved e-book terminal device according to the present invention the following advantages occur.

That is, when a user reads using an e-book, the user can not only listen to music and the voice of the recorded user, but also use it as an Internet terminal and use it as a camera for storing images.

Claims (12)

A central processing unit that executes a dedicated program and controls using the executed dedicated program; A program ROM for transmitting the dedicated program stored in the CPU to execute the dedicated program, to the CPU; A built-in flash memory that stores various document files and music files, and stores external voices and processes them under control of the CPU; A display controller for controlling titles of various documents and music files transmitted from the CPU and various kinds of information required by the user; A display device displaying titles of various documents and music files transmitted from the display controller and various kinds of information necessary for the user; An input switch device for moving pages of an e-book and reproducing music and voice; A communication device for connecting the document and music file of the e-book to mount the built-in flash memory; A decoder for decoding a music file stored in the built-in flash memory; An analog / digital converter for converting a voice analog signal transmitted from a microphone into a digital signal; A digital / analog converter for converting a digital signal transmitted from the decoder into an analog signal and transmitting the same to an earphone or a speaker; And And a data RAM for storing initial data, temporary data, variables, etc. required for a dedicated program executed in the CPU. The method of claim 1, Improved e-book terminal device, characterized in that it further comprises an external flash memory to support the smart media, compact flash, memory stick, etc. mounted in the external in consideration of expandability when the capacity of the internal flash memory is insufficient. The method of claim 1, wherein the central processing unit Improved e-book device, characterized by a general-purpose embedded processor such as AMD, Intel, ARM. The method of claim 1, wherein the input switch device Improved e-book terminal device characterized in that the button switch to move the page of the e-book forward / backward or up, down, left and right. The method of claim 1, wherein the input switch device Improved e-book terminal device characterized in that the toggle switch to toggle between the e-book mode and music playback mode. The method of claim 1, wherein the input switch device Improved e-book terminal device characterized in that the touch screen device. The method of claim 1, wherein the input switch device Improved e-book terminal device characterized in that the stylus device. The method of claim 1, wherein the input switch device And an control panel attached to the wire line of the phone. The method of claim 1, wherein the input switch device Improved e-book terminal device characterized in that the keyboard for the input of data used in the PDA or the use of a web browser. The method of claim 1, wherein the communication device Improved e-book terminal device characterized in that the device is connected to the Internet or a remote server to allow the user to download the file directly from the remote server. The method of claim 1, wherein the communication device Improved e-book terminal device characterized in that the device to be downloaded to the built-in flash memory using a file transfer program running on a computer. The method of claim 1, wherein the decoder And a decoded music file in WAV, MID, MP3, RA, AAC, etc. format stored in the built-in flash memory.