CN200976144Y

CN200976144Y - Multimedia digital book

Info

Publication number: CN200976144Y
Application number: CNU2006201679805U
Authority: CN
Inventors: 刘建生
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-24
Filing date: 2006-12-14
Publication date: 2007-11-14
Anticipated expiration: 2016-12-14

Abstract

The utility model relates to a multimedia data book, which comprises a body, a display screen, a main processor, and a program memory, a data memory, an audio codec, an input keyboard, which are connected with the main processor, and the audio I/O device which is connected with the audio codec; wherein, the main processor is a low power consumption system (SoC) chip which is provided with the function of multimedia processing; a collapsible structure is arranged between the body and the display screen, the whole width after folding the two is 130 to 190mm, and the length is 180 to 260mm. The multimedia data book of the utility model has the advantages that: first, the utility model has little power consumption, with long time use under the situation of battery supply; second, whole machine size is similar with the traditional paper-based notebook, being portable; third, the utility model is provided with most functions of the traditional portable computers, with lower cost, and better convenience for using than traditional PDA; fourth, handwritten input function makes users write and record freely, and the using effectiveness of the whole product is more close to paper-based notebook.

Description

Multimedia digital book

Technical Field

The present invention relates to a portable electronic product, and more particularly to a portable multimedia digital book with multimedia function, which can be used as a portable notebook and an electronic book.

Background

In daily life and study, people need to look up a large number of books and materials, and in some cases, the people need to record and copy related contents by using a notebook. In the current knowledge explosion and information abundance environment, if the user needs to carry books and notebooks to study and record, the user will occupy a large space. For example, students and employees are increasingly carrying books and documents, which is a great burden. This is not compatible with the current situation of advanced technology, and a portable electronic product capable of solving these problems is desired.

At present, an electronic book is available in the market, wherein novels, materials and the like can be downloaded into the electronic book, and the electronic book can be carried with the electronic book for reading, so that the problem of carrying the book is solved to a certain extent. But the disadvantages are that the function is single, the display quality is poor, only simple books can be read, and writing is not supported. In addition, the requirements on the file format are very strict, and the book with luxuriant pictures and texts cannot be supported, so that the application is limited to a certain extent.

The existing notebook computer has the functions of reading electronic books and can be externally connected with a handwriting pad to realize handwriting input, but the existing notebook computer has larger volume and weight and higher cost. In addition, the power consumption of the notebook computer is large, and the notebook computer can only be used for less than 4 hours after being charged once, and cannot achieve the purpose of real portable use. On the other hand, although the existing palm computer is convenient to carry, the screen is too small, and the practical effect of writing and reading cannot be achieved.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the present invention is to provide a portable, user-friendly multimedia digital book.

The utility model provides a technical scheme that its technical problem adopted is: constructing a multimedia digital book, which comprises a main body, a display screen connected with the main body, a main processor electrically connected with the display screen, a program memory, a data memory and an audio codec electrically connected with the main processor, and an audio input/output device connected with the audio codec; the main processor is a low-power-consumption system-on-chip with a multimedia processing function; the main body and the display screen are of a foldable structure, and the whole width and the length after being folded are respectively 190 mm and 130 mm and 260 mm.

In the utility model, a handwriting input device matched with the display screen can be arranged; the handwriting input device can be a touch screen completely covering the display screen; or, the handwriting input device comprises a conductive screen plate and a handwriting pen, the conductive screen plate is arranged on the back of the display screen and is connected with the main processor through a corresponding conversion processing circuit, and a transmitting circuit capable of sending electromagnetic signals to the conductive screen plate and a power switch connected with the transmitting circuit are arranged in the handwriting pen.

In the utility model, a handwriting input area can be arranged on the main body; wherein, a touch input device can be arranged on the surface of the handwriting input area; or, the back of the handwriting input area is provided with a conductive screen plate and a handwriting pen, the conductive screen plate is connected with the main processor through a corresponding conversion processing circuit, and the clicking pen is internally provided with a transmitting circuit capable of sending electromagnetic signals to the conductive screen plate and a power switch connected with the transmitting circuit.

In the present invention, an input keyboard electrically connected to the main processor may be further provided on the main body.

In the present invention, an embedded operating system having a character, graphic, and multimedia processing and/or communication function is preferably used.

The utility model discloses in, audio input/output device includes: a microphone interface and/or a built-in microphone, an earphone interface and/or a built-in loudspeaker.

In the utility model, one or more devices are also arranged on the main body; a general keyboard interface and/or an external mouse interface connected with the main processor; a network card and a network interface connected with the main processor; an expansion memory card socket connected with the main processor; a USB master interface and/or slave interface connected to the master processor.

The utility model discloses in, still include with the digital camera that the host processor links to each other, digital camera locates in the main part, or locates the display screen back.

According to the above technical solution, the utility model discloses a multimedia digital book has following advantage:

(1) the power consumption is low, and the battery can be used for a long time under the condition of battery power supply;

(2) the size of the whole notebook is similar to that of a traditional paper notebook, and the notebook is convenient to carry;

(3) the notebook computer has most functions of the traditional notebook computer, has lower cost, and is more convenient to use and more practical than a palm computer;

(4) the handwriting input function enables a user to write and record at will, so that the using effect of the whole product is closer to that of a paper notebook.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

FIG. 1 is a schematic diagram of a multimedia digital book according to the present invention;

FIG. 2 is a schematic circuit diagram of a multimedia digital book according to the present invention;

FIG. 3 is a circuit diagram of a main processor portion of the multimedia digital book of the present invention;

FIG. 4 is a circuit diagram of a synchronous dynamic memory portion cooperating with the main processor portion of FIG. 3;

FIG. 5 is a circuit diagram of a program memory portion cooperating with the main processor portion of FIG. 3;

FIG. 6 is a circuit diagram of a data memory portion cooperating with the main processor portion of FIG. 3;

FIG. 7 is a circuit diagram of a universal keyboard and/or external mouse interface cooperating with the main processor portion of FIG. 3;

FIG. 8 is a circuit diagram of the pluggable memory card portion that mates with the main processor portion of FIG. 3;

fig. 9 is a circuit diagram of a liquid crystal display interface section cooperating with the main processor section of fig. 3;

FIG. 10 is a circuit diagram of an audio codec portion cooperating with the main processor portion of FIG. 3;

fig. 11 is a circuit diagram of a keyboard section cooperating with the main processor section of fig. 3.

Detailed Description

Fig. 1 is a schematic structural diagram of the multimedia digital book of the present invention. As shown in fig. 1, the multimedia digital book 100 of the present invention includes a main body 120 and a liquid crystal display 101 connected to the main body 120 through a hinge. The lcd 101 can rotate relative to the main body 120 to open and close. For carrying convenience, the overall width of the folded part between the main body and the display screen is 190 mm, and the length is 180 mm and 260 mm, namely the size from 32 to B5. In the embodiment shown in fig. 1, the entire multimedia data book 100 is sized a5, i.e., 148 × 210. Other dimensions within the above range, such as 130 × 180, or 130 × 260, or 190 × 180, or 190 × 260, etc., may also be used in implementations.

The size of the liquid crystal display 101 is slightly smaller than the whole digital book, and the resolution is above 480 x 234, so that the user can have enough definition when reading and writing. The liquid crystal display 101 is a normal black-and-white screen or a monochrome screen with gray scale, and may be a color display screen. In order to facilitate the use of the user, the liquid crystal display 101 is a touch liquid crystal display, and the user can write on the screen at will, which is very convenient to use.

On the main body 120, an input keyboard 111 is provided; a special function keyboard 115 is arranged at the left upper part of the keyboard so as to start a special function; the upper part is provided with a direction key and a page-changing key 116; the upper right portion of the device is provided with a touch operation or handwriting input area 102 for a user to perform touch operation or handwriting input.

At the side of the main body 120, one or more USB host device interfaces are provided for inserting general-purpose mobile devices such as general-purpose USB mobile hard disks and cameras to record video or expand storage capacity or functions. The side of the main body 120 is further provided with a network interface for connecting a local area network or the internet to browse a web page or download data. According to the requirement, a universal keyboard expansion interface 103, an external mouse interface 104 and a USB slave device interface 105 can be further arranged, and are respectively used for connecting a keyboard, a mouse and communicating with a computer and exchanging data. The USB slave device interface 105 may also function as an external power interface. When the USB interface of the computer is inserted, the USB power supply of the computer can be used for working; when the external power adapter with the USB interface is inserted, the external power adapter can be used for supplying power. In addition, the side of the main body 120 is provided with an expansion memory card socket 106 into which, for example, an SD/MMC card is inserted, and a power switch button 110. And external microphone interface 108 is used for connecting external microphone, lets the user carry out the recording of distance more far away. The built-in microphone 107 is used when the sound source is close to the distance. The headphone interface 109 is an output port of an audio signal, and allows a user to wear a headphone to listen to a voice signal or to enjoy music, and when the headphone is not inserted, sound is automatically output from a built-in speaker (not shown).

A digital camera (not shown) is further provided at the rear side of the multimedia digital book 100 to take pictures at any time. In order to adapt to different requirements, the lens can be arranged on the back of the liquid crystal display and can also be designed into a drawing structure, so that the lens can be drawn out and adjusted to different heights and directions when needed.

Fig. 2 is a schematic circuit block diagram of the multimedia digital book of the present invention. As shown in fig. 2, the main processor 9 is a low power consumption "system on a chip (SoC)" chip with multimedia function for use in a handheld device. Is a control center of the whole machine, and is integrated with a plurality of multimedia components.

In recent years, SoC chips have been developed rapidly, and various major IC manufacturers (e.g., Intel, Marvell, Samsung, TI, Amd, Freescale, Atmel, Sharp, Epson, etc.) have introduced their own SoC chips based on multimedia and communication. Among them, S3C2410 and S3C2440 of Samsung corporation, PXA255 and PXA270 of Intel corporation, PXA300/310/320 of PXA3XX series (Monahans) of Marvell corporation based on the third-generation XScale technology of Intel corporation, and MC9328MX21 and mcmix 31 of Freescale corporation are typical representatives of such chips.

The SoC chip has a stronger function, and although the processing speed is insufficient, the SoC chip is close to the CPU speed of the current notebook computer, and the overall function of the SoC chip is much better than that of the CPU of the notebook computer. Most SoC chips are integrated with many peripheral circuits necessary for forming a multimedia computer system, such as a memory management circuit, an external memory card interface circuit, an LCD controller, an audio codec interface, USB host and slave device interfaces, a network interface, a digital camera interface, an infrared interface, a bluetooth interface, a keyboard interface, and the like. Some also integrate memory, audio codec, etc. specific modules on the chip. Recently, the newly introduced SoC chip even integrates a multimedia coprocessor, so that the processing capability of the SoC chip on audio and video data is better than that of a notebook computer. When the chip is used for forming a multimedia computer, a computer system which can meet the requirements of processing data such as characters, images, multimedia and the like and network communication during outdoor office work can be formed only by additionally adding a small amount of peripheral chips such as a memory and the like. Because the design target of the chips is to be used in the handheld devices, great efforts are made in the aspects of process and power supply management, and the power consumption of the chips is much smaller than that of a CPU (central processing unit) of a notebook computer. In addition, the system saves a display card, a network card, a hard disk, an optical drive, a fan and other large parts, and the volume and the power consumption of the whole machine enable the system to become real mobile office equipment.

According to statistics, most of computer functions used outdoors are not processing of characters, images, audio and video signals and network communication, and the functions can be completely met by the SoC chip. In order to reduce the cost and save resources, an embedded operating system (such as microsoft Windows CE, Palm OS of Palm corporation, etc.) specially developed for Palm devices can be used. Such operating systems do not include a large number of functions that are not needed in the outdoor activity, which greatly reduces the amount of code for the operating system, and consumes very little system resources such as memory at runtime. This leads to a still further reduction in overall cost and power consumption. In specific implementation, the main processor is selected to meet the requirements of processing characters, images, audio and video signals and network communication which are frequently used by people in outdoor work, and software and hardware resources are saved as much as possible by using the 'sufficiency' principle. Under the aim, for the convenience of use, the whole notebook is made to be as large as a common notebook, and the size of the whole notebook is basically between 32K and B5. The trouble that the notebook computer is too heavy and inconvenient to carry and the palm computer screen is too small for recording and reading is solved. The computer box has the advantages that most computer functions required in outdoor work can be met, and the computer box is convenient to carry and simple to use. The convenience degree of the method is the same as that of using ordinary paper notebooks and books, but the method has a natural difference in information processing.

Because of the wide application prospect of SoC chips, SoC chips with higher and higher performance-price ratio are continuously showing new ones. It is expected that in the near future, notebook computers and even desktop computers will gradually adopt such chips to replace the existing simple-function CPU.

The program memory 2 in fig. 2 is used for storing control software executable by the main processor 9, and the main processor 9 controls the implementation of various functions according to the pre-designed software; the access speed of the synchronous dynamic memory 3 is very high, and the current part of the execution software rolls in and rolls out to accelerate the execution speed of the program; the data storage 4 is used for storing data required by users, such as electronic books, video programs, MP3 songs and the like; the expansion memory card socket 106 is used to insert a replaceable memory card to expand data storage capacity.

The lcd 101 is an important user interface and is directly connected to the main processor 9, and may be selected from a black and white screen, a monochrome screen with gray scale, or a color screen. The liquid crystal display may be provided with a touch screen which is a resistive or capacitive touch screen and/or a writing pad which is a wired or wireless writing pad comprising a stylus and a conductive screen plate mounted on the back of the display.

The external microphone interface 108, the internal microphone 107, the external speaker 12, and the headphone interface 110 are connected to the main processor 9 through an audio CODEC 8 (CODEC). The audio codec 8 encodes or compresses the audio signal input by the external microphone or the internal microphone 107 into data stream with format of ADPCM, MP3, etc. during recording, and stores the data stream into the data memory 4 under the control of the main processor 9; during playing, under the control of the main processor 9, the encoded or compressed data is obtained from the data memory 4, decoded or decompressed and restored into analog audio signals, and then output from the external speaker 12 or the earphone interface 109.

The power supply 19 in the figure is a general lithium ion battery for a mobile phone, and generally, can continuously operate for more than ten hours with a capacity of about 3000 mAh.

The digital camera 6 is used for taking interesting pictures or recording, compressing sensed images or video signals under the control of the main processor 9 and storing the compressed images or video signals into the data memory 4, and can be taken out by the main processor 9 at any time to be displayed on the liquid crystal display 101 when needed.

Handwriting input area 102 may be a conventional resistive or capacitive touch screen, or may be a wired or wireless handwriting pad including a conductive mesh and a stylus. For example, when the handwriting input area 102 is a wireless handwriting pad, the inside is a thin film printed with a silver paste conductive mesh, and the conductive mesh is connected to the main processor 9 through a flexible circuit (FPC). The user can write on the handwriting input area 102 using a specially equipped stylus, and the main processor 9 determines the contents of the user's writing based on the received signal transmitted from the stylus and displays the same on the liquid crystal display 101 while storing the same in the data storage 4. Handwriting input area 102 may also be a normal touch area, allowing the user to both handwriting input and touch operation.

It should be noted that fig. 2 is only a typical circuit block diagram of the present invention, and there are many optional combinations in practice. For example, the program memory 2 may be integrated with the data memory 4; the synchronous dynamic memory 3 is sometimes incorporated into the main processor 9; it is also possible to delete some of the components or add other components as needed.

FIG. 3 is a circuit diagram of a main processor portion of the multimedia digital book of the present invention; FIGS. 4-11 are circuit diagrams of portions cooperating with the main processor portion of FIG. 3. As shown in fig. 3, the main processor U101 is an embodiment of the main processor of the present invention, and it employs a TCC761 chip of Telechips, korea. The main processor core is ARM940T with color LCD controller, memory management controller, USB main device and slave device interface controller, SD/MMC memory card control interface, digital camera controller and interface, etc. As can be seen from fig. 3, the USB master interface J103 and the USB slave interface J102 are directly led out from the corresponding pins of the main processor U101. The USB slave device interface U102 also functions as an external power interface. The digital camera control interface J104 is directly wired out from the digital camera control interface line of the main processor. The touch screen controller is realized by an AD converter arranged in the main processor and is connected with the FPC wire of the touch screen through a touch screen interface J101.

The synchronous dynamic memory of FIG. 4 uses MT48LC4M32B2 from MICRON corporation, USA, and has 32-bit data bus and faster access speed.

The program memory of fig. 5 employs SST39VF6401B70 from SST corporation, usa.

The data memory of fig. 6 uses K9K4G08UOM of samsung corporation of korea, which has a capacity of 512MB, and a data memory of a larger capacity is used instead if necessary.

FIG. 7 is a circuit diagram of a portion of a universal keyboard and/or external mouse interface that can be inserted into a keyboard conforming to the PS2 interface specification using the popular PS2 keyboard and/or mouse interface specification, with the mouse attached to the keyboard. Of course, a mouse separate from the keyboard interface may also be used, plugged in from the mouse specific PS2 interface.

FIG. 8 is a circuit diagram of the SD/MMC expansion memory card socket portion, directly connected to the control data line of the host processor.

Fig. 9 is a circuit diagram of the interface portion of the lcd controller, with the controller inside the main processor U101 and the driver on the selected lcd. In the prior art, there are many such displays, such as the 8-hour color display LTC800WV from Samsung, Korea, with a resolution of 800 × 480 dpi.

Fig. 10 is a circuit diagram of an audio codec portion. The CODEC is implemented using WM8731 from WOLFSON, uk, connected via dedicated control and data lines to the main processor U101. The built-in microphone recording is introduced by J107 and the external microphone recording is introduced by J109. The output audio signal is amplified by a loudspeaker power amplifier circuit and then is sounded by a built-in loudspeaker or an inserted earphone through J108.

Fig. 11 is a circuit diagram of a keyboard section cooperating with the main processor section of fig. 3. The circuit of the input keyboard is a circuit which switches on the voltage dividing point of the voltage dividing resistor string by a key and identifies the key by measuring the voltage value through an analog-digital converter (ADC). Its advantages are simple connection and less occupied IO port resource of main processor.

It should be noted that, although the SoC chip (main processor 9) used in this embodiment is not the beautiful one therein due to its low cost, it essentially represents the architecture feature of the present invention, and the selection of a specific chip does not affect the generality of the present invention.

The utility model provides a portable multi-media digital book with the same size as a common book/notebook, which is convenient to carry. The main processor is a low-power system on chip (SoC) chip with a multimedia function, so that the power consumption is low, the long-time use is convenient, and the cost is low. Compared with the prior palm computer, the computer overcomes the defects of undersize and inconvenient operation and writing. Compared with a notebook computer, unnecessary components such as a CD-ROM, a hard disk and the like are saved, the power consumption is reduced, and the defects of inconvenient carrying and large power consumption are overcome. The user can download and store books and files from the device interface by using the USB. And simultaneously, reading, playing and reviewing can be carried out by corresponding reading software in the program memory. In order to meet the recording requirements in daily life, the multifunctional pen is also provided with functions of handwriting input, keyboard input, recording, photographing, video recording and the like. Not only can improve the work and study efficiency of people, but also can reduce the burden of carrying.

The special processing software can be designed in the multimedia digital book, so that a user can use a light touch pen to write on a display screen at any time, the content of the user can be directly recorded as an electronic document, the electronic document is automatically paged and stored, and the user can call up and browse at any time when needed, and the multimedia digital book becomes an effective tool for shorthand at any time.

The capacity of the built-in data memory of the multimedia digital book of the utility model can reach 2GB, and more than 3000 Chinese books with 30 ten thousand characters (about 500 pages) can be stored. Its extended memory card socket and USB host device interface further extend its storage capacity. According to the needs, the utility model discloses a multimedia digital book can deposit a large amount of reference materials in, forms a mass database of hand-carrying, reads, seeks, extracts, gathers, annotates, catalogues and all becomes very convenient and high-efficient.

For students, the required textbooks can be scanned into the utility model (or electronic version textbooks published by publishing houses), and the textbooks, the homework book and the notebook are not needed to be carried, so that the heavy schoolbag becomes the light and convenient schoolbag. More importantly, the utility model discloses a great deal of function of helping study will alleviate student's study burden, improve student's learning efficiency greatly.

Except for students, common staff, especially business personnel can take the multimedia digital notebook as a carry-on notebook and an interview notebook, and the multimedia digital notebook can be used for quickly taking notes and drawing sketches along with the cursive body during meetings and negotiations, recording and taking pictures at any time, and has wide application range.

Claims

1. A multimedia digital book comprises a main body, a display screen connected with the main body, a main processor electrically connected with the display screen, a program memory, a data memory and an audio codec electrically connected with the main processor, and an audio input/output device connected with the audio codec; it is characterized in that the preparation method is characterized in that,

the main processor is a low-power-consumption system-on-chip with a multimedia processing function;

the main body and the display screen are of a foldable structure, and the whole width and the length after being folded are respectively 190 mm and 130 mm and 260 mm.

2. The multimedia digital book of claim 1, further comprising a handwriting input device cooperating with said display screen;

the handwriting input device is a touch screen completely covering the display screen; or,

the handwriting input device comprises a conductive screen plate and a handwriting pen, wherein the conductive screen plate is arranged on the back surface of the display screen and is connected with the main processor through a corresponding conversion processing circuit, and a transmitting circuit capable of sending electromagnetic signals to the conductive screen plate and a power switch connected with the transmitting circuit are arranged in the handwriting pen.

3. The multimedia digital book of claim 1, wherein a handwriting input and/or touch manipulation area is provided on the body;

a touch input device is arranged on the surface of the handwriting input and/or touch operation area; or,

the back of the handwriting input area is provided with a conductive screen plate and a handwriting pen, the conductive screen plate is connected with the main processor through a corresponding conversion processing circuit, and a transmitting circuit capable of sending electromagnetic signals to the conductive screen plate and a power switch connected with the transmitting circuit are arranged in the clicking pen.

4. A multimedia digital book according to any of claims 1 to 3, wherein an input keyboard is provided on the main body, electrically connected to the main processor.

5. The multimedia digital book of claim 4, wherein an embedded operating system with text, graphics and multimedia processing and/or communication functions is employed.

6. The multimedia codebook of claim 4, wherein the audio input/output device comprises: a microphone interface and/or a built-in microphone, an earphone interface and/or a built-in loudspeaker.

7. The multimedia digital book of claim 4, characterized in that one or more of the following means are also provided on said body;

a general keyboard interface and/or an external mouse interface connected with the main processor;

a network card and a network interface connected with the main processor;

an expansion memory card socket connected with the main processor;

a USB master interface and/or slave interface connected to the master processor.

8. The multimedia digital book of claim 4, further comprising a digital camera connected to the main processor, the digital camera being disposed on the main body or on the back of the display screen.