KR100631790B1 - Sound book device and page recognition method - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to page recognizing means of an audio book, and in particular, a page reading code is read from a page code image obtained by reading an image of a page code portion formed on one side of each page of a book 20 by an image acquisition unit. The present invention relates to an acoustic book device that allows extraction.

The present invention in the sound book device,

The page code constituting the page code unit 21 on one side of the book 20 is formed in the form of any one of numbers, letters, pictures, barcodes or binary codes,

The page recognition unit 12 configured on one side of the reading table includes an image acquisition unit 12a for reading an image of the page code of the page code unit 21, and a page acquired from the image acquisition unit 12a. A page reader 12b for extracting the page reading code from the image for the code,

Reading an image of a page code part of a book and storing the image in a pixel array in an image acquisition unit including an image sensor; Reading each pixel value of the pixel line from the pixel array data of the image acquisition unit, and binarizing each pixel value of the pixel line; Checking whether there is a predetermined start pattern from the binarized pixel line; Calculating the number of pixels of each bit of the page code from the number of pixels of the starting pattern; Generating page code from pixels other than the starting pattern; Checking whether an end pattern exists in the generated page code; Page recognition is performed by extracting the actual page number from the binary page code generated by the page code generator and sending it to the microcomputer.

The present invention is not only applied to the recognition of the pages of the book, but also recognizes each of the word card, text card, picture card, and glyph card with the contents of the sheet form, and the sound of the contents of the card in the multiple talking card system Applicable to distinguish cards.

Sound book, page recognition, page code, book, talking card

Description

Sound book equipment and page recognition method             

1 is a block diagram of an acoustic book apparatus according to the present invention,

2 is a perspective view showing an example of an acoustic book apparatus according to the present invention;

3 is a plan view showing an example of a book read by the sound book apparatus according to the present invention,

4 is a plan view showing an example of a card read by the acoustic book apparatus according to the present invention,

5 is a block diagram of a page recognition unit of the audio book apparatus according to the present invention;

6 is a block diagram showing an example of the page code unit according to the present invention;

7 is a block diagram of an image acquisition unit in the page recognition unit of the audio book apparatus according to the present invention;

8 is a configuration diagram showing an example of a pixel array for page recognition of a page reader in the audio book apparatus according to the present invention;

9 is a block diagram showing the structure of a page reader in the audio book apparatus according to the present invention;

10A is a flowchart for explaining a page recognition process in the audio book apparatus according to the present invention;

FIG. 10B illustrates the configuration of one pixel line of the pixel arrangement of FIG. 8;

11 is a flowchart illustrating a reading process using the acoustic book apparatus according to the present invention,

12 is a perspective view showing another example of an acoustic book apparatus according to the present invention;

13 is a block diagram showing an example of a conventional sound book device,

14 is a plan view showing an example of a book having a conventional page recognition code portion;

FIG. 15 is a side view for explaining a method of recognizing a page code in a conventional acoustic book apparatus.

Explanation of symbols on the main parts of the drawings

10: reading desk 11: book settlement

12, 12 ': page recognition unit 12a, 12a': image acquisition unit

12b, 12b ': page reader 13: memory

13a: memory interface 14: voice data processor

15: D / A Converter 16: Amplifier

17: audio output unit 17a: speaker

17b: Earphone connector 18: Micom

19: Play Button 20: Book

21: page code part 22: page content part

23: video output unit 23a: display window

23b: Display connector

24: image data processing unit

30: Book Card

L: Focal Length

The present invention relates to an acoustic book apparatus for reproducing contents (including sentences, background music, etc.) of an open page of a book by sound, and more particularly, by recognizing page numbers using a book's page code. A sound book apparatus for generating sound associated with page content.

As technology advances rapidly, audible books are being developed and used rather than simply read. Particularly, in the case of books for children or children, a device for automatically recognizing a page and generating the contents of an open page as a sound when a page is turned over has been developed and used. As one of such devices, an acoustic book device using an infrared sensor is registered in Korea Utility Model. No. 20-0300879 "Sound book device" is registered.

The existing acoustic book apparatuses are provided with means for recognizing pages so as to recognize pages and output contents corresponding to the recognized pages as sounds.

A configuration example of such an existing acoustic book apparatus is shown in FIG. 13, a book on which a page recognition code is formed is shown in FIG. 14, and an example of page recognition means for recognizing such a page code is shown in FIG.

Means for recognizing a page in the conventional sound book apparatus as described above are the page code part P21 formed on one side of the book P20, which is a white code P21b that reflects infrared rays and a black code P21a that does not reflect. The page recognition unit P12 is provided with a light transmitting unit P12a and a light receiving unit P12b corresponding to each bit code.

The infrared rays projected from the light projector P12a are absorbed by the black page code and the code protection area P21a, and reflected and scattered by the white page code P21b to enter the light receiver P12b. The code for each bit is divided to recognize the pages of the book.

However, in the case of the conventional method, even the black page code and the code protection area P21a do not absorb all of the infrared rays but reflect some of them, and in particular, the light reflected from the black page code P21a according to the thickness of the page is used. The amount is different. That is, the intensity of light reflected by the black page code P21a of the page close to the light receiving unit P12b may be higher than the three reflected light from the white page code P21b of the lowest page of the book. Therefore, in the light-receiving section, the black page code voltage of the high page of the book is higher than the white page code voltage of the lowest page of the book, so that the bit value 0 may be misrecognized as the bit value 1. That is, a malfunction of page code recognition occurs. This limits the page thickness available in the conventional manner.

In addition, since there is a difference in the amount of photos exposed to the light receiving unit (P12b) according to the play of the book, the conventional method has a disadvantage that it is sensitive to the play of the book.

The present invention has been made to solve the above problems of the conventional acoustic book apparatus, and includes an image acquisition unit for reading an image including a page code unit and a page reading code that can be recognized by the audio book device from the image data. An object of the present invention is to provide an acoustic book apparatus capable of recognizing page codes more effectively by constructing a page reading unit for extracting.

That is, an object of the present invention is to provide an acoustic book apparatus that is less sensitive to page thickness and book clearance than the conventional method by using an image sensor for page recognition.

In addition, an object of the present invention is to provide an acoustic book apparatus capable of implementing various types of page codes without using the shape of the page codes by using an image sensor.

The object of the present invention as described above is a page recognition unit 12 for recognizing the page code unit 21 formed in the book 20, and audio and video information about the contents of the page recognized by the page recognition unit 12 Memory 13, a voice data processor 14 for processing voice data stored in the memory 13, a D / A converter 15 for converting a digital voice signal into an analog signal, and an analog signal, The voice output unit 17 outputs the voice and sound signals amplified by the amplifier 16 and the data corresponding to the page number recognized by the page recognition unit 12 from the memory 13 to find the data. In the sound book device consisting of a reading table 10 composed of a microcomputer 18 for controlling the overall process of sending and output to (14),

The page code constituting the page code unit 21 on one side of the book 20 is formed in the form of any one of numbers, letters, pictures, barcodes or binary codes,

The page recognition unit 12 configured on one side of the reading table includes an image acquisition unit 12a for reading an image of the page code of the page code unit 21, and a page acquired from the image acquisition unit 12a. And a page reader 12b for extracting the page reading code from the image for the code.

Further, an object of the present invention is to provide a page recognition method of an acoustic book apparatus.

Reading an image of the page code unit 21 of the book by the image acquisition unit 21a including an image sensor and storing the image in a pixel array; Reading the pixel array data of the image acquisition unit 21a in pixel line units and binarizing each pixel value of the pixel line; Checking whether there is a predetermined start pattern from the binarized pixel line; Calculating the number of pixels of each bit of the page code from the number of pixels of the starting pattern; Generating page code from pixels other than the starting pattern; Checking whether an end pattern exists in the generated page code; Page recognition is performed by extracting the actual page number from the page code of the binary generated by the page code generator and sending it to the microcomputer.

Hereinafter, an example of an acoustic book apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an acoustic book apparatus according to the present invention, FIG. 2 is a perspective view showing an example of the acoustic book apparatus according to the present invention, and FIG. 3 is an example of a book read by the acoustic book apparatus according to the present invention. 4 is a plan view showing an example of a card read by the acoustic book apparatus according to the present invention, FIG. 5 is a configuration diagram of a page recognition unit of the acoustic book apparatus according to the present invention, and FIG. Fig. 7 is a block diagram showing an example of the page code unit according to the present invention. Fig. 7 is a block diagram of an image acquisition unit in the page recognition unit of the audio book apparatus according to the present invention. FIG. 9 is a block diagram showing an example of a pixel array for page recognition of a page reader. FIG. 9 is a block diagram showing a structure of a page reader in an audio book apparatus according to the present invention. 10A is a flowchart illustrating a page recognition process in the audio book apparatus according to the present invention, FIG. 10B illustrates the configuration of one pixel line of the pixel arrangement of FIG. 8, and FIG. FIG. 12 is a flowchart illustrating a reading process using the acoustic book apparatus, and FIG. 12 is a perspective view showing another example of the acoustic book apparatus according to the present invention.

As shown, the acoustic book apparatus according to the present invention includes a book 20 and a reading table 10. The book 20 is a medium in which a picture, a character, or a picture and a letter are printed, and a page content part 22 is formed at the center, and a page code part 21 is formed at one side thereof.

In FIG. 2 and FIG. 3, the page code unit 21 is formed at an end of the book 20, that is, on the opposite side of the bookbinding unit. In one embodiment, the position is not limited thereto.

The page code unit 21 further distinguishes a page code image from another image by further adding a start pattern or an end pattern for identifying the start and end of the page code.

The book 20 includes a talking card that stores voice and sound, records pictures and characters, and includes a talking card composed of sheets. The book 20 includes a memory 13 for storing the contents of the book in voice. have.

The memory 13 may be a ROM-pack, a flash memory card, a compact disk, or the like, which may be attached to or detached from the memory interface 13a provided in the reading table 10, and may be fixed to a flash memory or a hard disk. Can be used.

The book 20 is read in a state placed on the book mounting portion 11 of the reading table (10).

The reading stand 10 is flat and the book mounting portion 11 on which the book 20 can be placed, and the sensor support 120 is installed on one side of the book mounting portion 11 and is installed there. And a page recognizing unit 12 for recognizing the page code.

The page recognition unit 12 includes an image acquisition unit 12a and a page reading unit 12b, respectively. As shown in FIG. 1, the image acquisition unit 12a is provided with respect to the page code unit 21. As shown in FIG. It is installed above the vertical direction and located at a height where the entire page code can be read as an image.

The image acquisition unit 12a may be formed by reducing the height of the mechanism or by giving an angle rather than the vertical direction with respect to the page code unit 21 as long as the entire page code can be acquired as an image. And it can be installed according to the tilt accordingly.

The acquired pagecode image of the image acquisition unit 12a is a pixel array consisting of one or more rows and columns, wherein the pixel array includes several pixels forming one pixel bit, and one or more pixel bits are arranged in succession to the pixel line. One or more pixel lines are arranged in a row.

As described above, the page recognition unit 12 includes an image acquisition unit 12a and a page reader unit 12b, and the image acquisition unit 12a is used by a CCD or CMOS image sensor that recognizes a normal image. do.

As shown in Fig. 9, the page reading unit 12b reads one pixel line from the pixel array of the image acquired and stored in the page acquiring unit 12a from the line buffer of the page acquiring unit, and then stores each pixel line. A pixel binarizer 121 for binarizing pixel values, a start pattern checker 122 for checking the existence of a predetermined start pattern from the binarized pixel line data, and a pixel for each bit of the page code from the number of pixels of the start pattern. A bit code page code calculator 123 for counting a number, a page code generator 124 for generating a page code from pixels other than a start pattern, and whether or not an end pattern exists in a part of the generated page code End pattern checker 125 and a page extractor 126 that extracts the actual page number from the page code of the binary generated by the page code generator. The.

The page recognition process of the page reader 12b may be performed through image processing using a microcomputer or a DSP, or may be configured by hardware logic such as an FPGA.

The page information extracted from the page extractor 126 of the page readers 12b and 12b 'is transferred to the microcomputer 18 so as to be used to retrieve information of the page from the memory 13 and output the sound or image. do.

In addition, as shown in FIG. 12, the page recognition unit may be configured separately from the reading table 10. That is, the removable page recognition unit 12 ′ may be configured to remove the book setter 11 of the reading stand 10 and to be connected by wire or wirelessly with a microcomputer configured in a main body provided with each means.

When the page recognition unit 12 'is separately configured as described above, it is preferable to be configured in the rod-shaped main body 120 so that the user can easily hold the device. The image acquisition button 12c is installed at one side to operate the gripped hand. To make it possible.

The main body 120 of the detachable page recognition unit 12 'has a hollow cylindrical shape, and when the image acquisition unit 12a' is too close to the page code unit 21 of the book 20, the page code is changed. Since it may not be sufficiently recognized, it is installed at a position spaced apart by the focal length L of the image sensor from the end of the main body 120 to match the separation distance.

The detachable page recognition unit 12 ′ is provided with a pressure sensor 12d on a surface of the book 20 facing the page code unit 21 so that the page recognition unit 12 ′ is provided on the page code unit 21. It is possible to detect whether the opposite state is achieved, and when the pressure sensor 12d is installed as described above, the pressure sensor 12d has a switching function to serve as the image acquisition button 12c. The image acquisition button 12c does not need to be provided.

In addition, the reading table 10 includes a voice processor 14 for processing voice information stored in the memory 13, a D / A converter 15 for converting a digital signal into an analog signal, an amplifier 16, and a voice output unit ( 17), a microcomputer 18 for controlling each of the components is provided.

The reading table 10 may further include an image data processor 24 and an image output unit 23 for processing image data and caption data stored in the memory 13.

The voice output unit 17 includes a speaker 17b integrally formed with the reading stand 10 and an earphone jack 17a for plugging earphones.

The reading stand 10 may directly output image data and caption data by configuring a display window 23b such as an LCD that is integrally formed at one side thereof.

In addition, the image output unit 23 of the reading stand is further provided with a display means connector (23a) for plugging the cable to the reading stand 10 and the TV or monitor.

One side of the reading table 10 is further provided with a play button 19 to repeat the process of outputting the contents of the corresponding page recognized by the page recognition unit 12 by voice.

In the sound book apparatus configured as described above, a process of recognizing a page in the page recognition unit will be described.

First, the image acquisition unit 12a reads an image including an arbitrary page code unit 21 printed on a book, and the page reading unit 12b reads out a page that can be recognized by the audio book apparatus from the image. Extract it.

When the book 20 is opened, the acoustic book apparatus reads out all related contents of the left and right pages of the book 20. Therefore, if the number of codes used is N, up to 2 ^{N + 1} pages can be supported. (If necessary, you can read page by page.)

Each code of the page code part 21 has a code value of 0, 1 (or 1, 0), respectively, depending on the color constituting the code. In the following description, code value 1 is used for light colors and code value 0 is used for dark colors. The same principle applies when the code value is reversed (0,1).

The distinction between darkness and light is determined by whether or not the color is converted into a black and white image, having a brightness above a reference value or not, and a color having a brightness above the reference value is a light color and vice versa.

Set the reference value between white and black. Hereinafter, to facilitate understanding of the present invention, it is assumed that each code of the page code part 21 is made of white and black, and a code value of black is 0 and a code value of white is 1.

6 shows an example of a page code of one of the page codes.

For accurate reading of the page code 21, this page code further comprises either or both of a start pattern and an end pattern.

The start pattern and the end pattern each consist of (black, white, black), and have a code value of (0, 1, 0). You can change the code values for the start pattern and end pattern.

The actual page codes C ₁ to C _n are either white or black depending on the pages of the sound book, respectively. In addition, each bit of the page code part 21 has the same shape and size, and the distance between successive bits and bits is the same through all the bits.

The image of the page code 21 constructed as described above and read by the image acquisition unit 12a is stored in the image acquisition unit as a pixel array constituting a plurality of rows and columns.

The pixel array is a collection of pixels having a resolution of M x N. The higher the resolution, the more accurate image data can be obtained.

Each pixel has an analog voltage corresponding to photon intensity, and outputs digital data through an A / D converter upon request of an external interface.

The image acquisition unit 12a transfers its pixel array data in pixel line units by using a line buffer at the request of the page reader 12b. If the pixel array has a resolution of M x N, it has N pixel lines, and one pixel line is composed of M pixels.

FIG. 8 is a block diagram showing an example of a pixel arrangement for page recognition of a page reader, and FIG. 9 is a block diagram showing the structure of a page reader.

The page reader 12b examines the pixel lines from pixel line 1 to pixel line N in ascending order (or descending order) and finds a pixel line including both a start pattern and an end pattern.

When a pixel line containing the start pattern and the end pattern is found, the actual page code value is extracted from the pixel line.

This is the page information to be delivered to the microcomputer 18.

If the pixel line including the start pattern and the end pattern does not exist, the book 20 is not placed on the book mounting portion 11 or an error has occurred.

This process will be described in more detail below.

10A is a flowchart illustrating a process of recognizing a page.

First, the page reader 12b receives pixel data from the pixel array of the image acquisition unit 12a that stores the page code image by using the line buffer of the image acquisition unit in pixel line units.

As described above, the pixel array is composed of a plurality of pixel lines, and each pixel line is composed of several bits.

The value of each pixel of the pixel line is converted into a binary value of 0 if lower than the reference value and 1 if the reference value is compared with the reference value through the "pixel binarizer".

The reference value setting method is as follows.

In the case of a monochromatic image sensor, if the maximum analog voltage of the pixel in the image acquisition unit corresponds to the white pixel and the minimum analog voltage to the black pixel, the image acquisition unit has a difference between the maximum and minimum analog voltages that determine the light and dark of the pixel. Can be set to a value. In general, it can be set to the middle of the maximum and minimum analog voltages.

If the page code is stored in one binarized pixel line, the bits of the page codes are composed of at least k consecutive pixels having the same binary value.

For example, in the start pattern, end pattern (0,1,0), the first bit 0 and the third bit 0 are at least k consecutive binary values 0, and the second bit 1 is at least k consecutive binary values 1 It consists of pixels with.

When the pixel line is binarized using the reference value, the operation of finding the starting pattern is performed.

That is, the inspection starts from the beginning of the binarized pixel line to find a set of pixel groups having at least k consecutive binary values 0, 1, 0. If the starting pattern does not exist in the pixel line under inspection, it is determined that the pixel line under inspection does not have information of the page code part, and the next pixel line is examined.

When the start pattern is found, the size of the page code for each bit is calculated by calculating the number of pixels for each bit of the start pattern.

The average value of the number of pixels of each bit of the start pattern can be regarded as the size d of the page code for each bit, and the distance between two consecutive bits of the page code part is equal to the size of the page code for each bit.

Sampling the pixels at a position apart from the middle pixel of the first bit of the start pattern by the page code size (d) of each bit, and generating the page code using the values of the pixels.

Except the start pattern, the actual page code (C ₁ ~ C _n ) is extracted from the generated page code, and the page information is obtained from the page code.

The process of checking whether there is an end pattern in the page code generated in the above process may be further performed.

In the above process, before the start pattern check, the pixel grouping step of grouping pixels having the same binary value in succession at least k may be further performed to generate the first page code using the pixel group value. You can repeat the process after the start pattern checker in the primary page code.

Even when the page recognition unit 12 'is configured in the shape of a pen as shown in FIG. 12, the process of reading the page is the same, and only the operation of the image acquisition unit 12a' is driven by pressing the image acquisition button 12c. Or the pressure sensing sensor 12d is operated.

Hereinafter, a voice output process using the sound book apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

7 is a flowchart illustrating a page recognition and audio output process of the audio book apparatus according to the present invention. First, the book 20 is placed on the book mounting portion 11 of the reading table 10 and turned on. In a state in which the book 20 is not placed on the book setter 11, since the start pattern and the end pattern do not exist, the page recognition unit 12 can recognize that the book 20 is not placed. . In this case, the page recognizing unit 12 delivers the page read code to the microcomputer 18 whose code value is 000 (assuming that the actual page code is composed of 3 bits).

The page reading code having a code value of 000 is a code value when there is no book 20 in the book mounting portion 11 or the start pattern and the end pattern cannot be recognized.

When the book 20 is placed in the book setter 11, the page recognition unit 12 transmits the corresponding page reading code to the microcomputer 18. At this time, the page reading code transmitted to the microcomputer 18 is a value other than 000.

The page value read by the page recognition unit 12 is transferred to the microcomputer 18 to find the contents of data corresponding to the page code in the memory 13.

In the case of voice data, it is sent to the voice data processor 14 and converted into an analog signal by the D / A converter 15, amplified using the amplifier 16, and then connected to the speaker 17b or the earphone jack 17a. Pass it to the earphone.

In the case of the image data or the caption data, the image data is sent to the image output unit 23 via the image data processing unit 24. The image output unit may directly display image data including an image display device 23b such as its own LCD, and display image data or subtitle data on a screen of a TV or a monitor connected to the image output terminal 23a.

Pressing the play button 19 generates a sound once more.

Subsequently, the page recognition unit 12 reads the page code image to check whether the page has been changed and whether the book 20 is in the book mounting unit 11.

Even if the page reading code is 000, that is, the book is missing from the book mounting section 11, the page recognition section 12 reads the image of the page code section 21 to produce the page reading code.

The method of reading an image from the page recognizing unit 12 is repeated at predetermined intervals. Even if the reading is repeated for a predetermined number of times, if the page reading code is 000, the power is automatically turned off.

Further, even if the time set in the microcomputer 18 has elapsed regardless of the number of times the image is read by the page recognition unit 12, if the page reading code is 000, the power is automatically turned off.

If the newly read page read code is not 000 and is different from the previous page read code, that is, if the page is read to another page, the data corresponding to the page read code read by the page recognition unit 12 is read from the memory as described above. Read and generate sound.

The present invention is not only applicable to books having the shape of a booklet, but can also be applied to distinguishing a plurality of cards in a talking card system in which a sound about the contents of a corresponding card is inserted when a word, a letter, a picture, or a patterned card is inserted.

If the page code used in the present invention is mounted on one side of the talking card, the same principle can be applied.

The acoustic book apparatus according to the present invention configured as described above has a page thickness which is a problem in the conventional acoustic book apparatus by configuring a page recognition unit which acquires a page code image through an image sensor and reads the page number of the book through the page reader. It is possible to stably recognize the page of the book by solving the shortcomings of the possibility of misrecognition of the page code due to the limitation of the book and the play of the book.

The present invention is not limited to the contents of the above embodiments, and those skilled in the art will be able to modify and add various embodiments with reference to the embodiments of the present invention.

Claims (10)

delete delete A page recognition unit 12 that recognizes the page code unit 21 formed in the book 20, a memory 13 in which audio and video information on the content of the page recognized by the page recognition unit 12 is stored; A voice data processor 14 for processing voice data stored in the memory 13, a D / A converter 15 for converting a digital voice signal into an analog signal, and an analog signal and amplified by the amplifier 16 The voice output unit 17 for outputting voice and sound signals, and the data corresponding to the page number recognized by the page recognition unit 12 are retrieved from the memory 13 and sent to the voice data processing unit 14 for output. In the sound book device consisting of a reading table 10 composed of a microcomputer 18 for controlling the process, The page code constituting the page code unit 21 on one side of the book 20 is formed in the form of any one of numbers, letters, pictures, barcodes or binary codes, The page recognition unit 12 configured on one side of the reading table includes an image acquisition unit 12a for reading an image of the page code of the page code unit 21, and a page acquired from the image acquisition unit 12a. A page reader 12b for extracting the page reading code from the image for the code, The page code constituting the page code unit 21 includes one or both of a start pattern and an end pattern. The method of claim 3, wherein the page recognition unit 12 is configured in the pen-shaped main body 120, An image acquisition unit 12a 'is formed at a position spaced apart from a focal length L from an end opposite to the page code unit 21 formed on the book 20, and a page reader 12b' is provided at one side thereof. And the page reader (12b ') is connected to a microcomputer (18) configured in a reading table (10) by wire or wirelessly. delete 5. The pixel binarizer of claim 4, wherein the page reader 12b reads one pixel line from a pixel array of an image acquired and stored in the page acquisition unit 12a, and binarizes each pixel value of the pixel line. 121, a start pattern checker 122 that checks the existence of a predetermined start pattern from the binarized pixel lines, and a bit-by-bit page code calculator that calculates the number of pixels of each bit of the page code from the number of pixels of the start pattern ( 123, a page code generator 124 for generating a page code from pixels other than the start pattern, an end pattern checker 125 for checking whether or not an end pattern exists in a part of the generated page code, and a page. And a page extractor (126) for extracting the actual page number from the page code of the binary generated by the code generator. 7. The acoustic book apparatus according to claim 6, wherein the page reader (12b) comprises a page recognition process made of either a field programmable gate array (FPGA) or an application specific semiconductor (ASIC) containing a program for image processing. The image acquisition button 12c for operating the image acquisition unit 12a 'is provided at one side of the main body 120 of the page recognition unit 12' having the pen-shaped main body 120. Sound book device, characterized in that further provided. 5. The end of the main body 120 of the page recognition unit 12 ′ having the pen-shaped main body 120 has an end of the main body 120 connected to the page code part 21 of the book 20. A sound sensing device (12d) is further provided for recognizing contact and transmitting a driving signal to the image acquisition unit (12a '). In the page recognition method of the sound book device, Reading an image of the page code unit 21 of the book by the image acquisition unit 21a including an image sensor and storing the image in a pixel array; Reading one pixel line from the pixel array and binarizing each pixel value of the pixel line; Checking whether there is a predetermined start pattern from the binarized pixel line; Calculating the number of pixels of each bit of the page code from the number of pixels of the starting pattern; Generating page code from pixels other than the starting pattern; Checking whether an end pattern exists in the generated page code; And extracting the actual page number from the previous page code generated by the page code generator and transmitting the actual page number to the microcomputer.

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