JPH07296387A - Information recording medium - Google Patents

Abstract

PURPOSE:To provide an information recording medium from which information can be read out without requiring any scanning by opposing the reader part correctly to code information. CONSTITUTION:A picture is drawn on an information recording medium, i.e., a picture book 2, provided at several parts thereof with dot code information units, e.g. dot code information units 4A1-4A4 constituting a code information set 4A, each representing the information related to the relevant part in the form of a dot pattern. The dot code information units 4A1-4A4, each comprising a dot code of identical content, are arranged at different angles. When a part of the code information set 4 recording the dot code information unit is scanned by means of the reader part 8, the recorded information is outputted from a control box 6 in the form of voice, for example.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to so-called multimedia including audio information such as voice and music, video information obtained from cameras and video equipment, and digital code data obtained from personal computers and word processors. The present invention relates to an information recording medium in which information is recorded as optically readable code information.

[0002]

2. Description of the Related Art Conventionally, various recording media on which information is recorded and various recording and / or reproducing apparatuses for the information are known. For example, Japanese Patent Laid-Open No. 5-7670 discloses RO in advance.
There is disclosed a book in which information matching the given key information is stored in a storage means such as M and the key read from a bar code reader is searched to output the information.

Further, Japanese Patent Laid-Open No. 56-121097 discloses a voice system in which voice data is stored in an LSI, voice data is retrieved from voice key data read from a bar code reader, and voice is output. Is disclosed.

On the other hand, Japanese Patent Application No. 5-2 by the applicant of the present invention.
The specification of 60464 shows a technique of converting multimedia information into a dot code and recording the dot code, and a technique of restoring the dot code into the multimedia information.
Further, a technique of arranging bar code data near Braille information is also known.

[0005]

However, in the conventional storage method as disclosed in the above-mentioned Japanese Patent Laid-Open No. 5-7670 and Japanese Patent Laid-Open No. 56-121097, the information registered in advance is stored as a key. Adding new information has never been so easy because it is used and retrieved. To add new information, the ROM or LSI must be replaced. That is, in the conventional storage method, the information corresponding to the key information not registered in the ROM or LSI cannot be extracted, and when it is desired to extract new information using the barcode, the ROM or LSI is also replaced or rewritten at the same time. There is a need.

Further, since only one bar code is printed on the medium for one data, it cannot be read unless the bar code reader is correctly applied to the bar code to scan it, especially for children and blind people. There was a point that was difficult to use.

The present invention has been made in view of the above points, and can read code information without storing the information in the ROM in advance, or even if the reader portion is not correctly positioned to scan the code information. It is an object of the present invention to provide an information recording medium capable of achieving the above.

[0008]

In order to achieve the above object, an information recording medium according to the present invention is provided with audio information,
An information recording medium in which multimedia information including at least one of video information and digital code data is recorded as optically readable code information, and the code information includes the same code information having the same content. It is characterized in that it is composed of a code information aggregate formed by aggregating a plurality in the area.

[0009]

In other words, a plurality of images such as pictures, photographs and characters are printed on each page of a book as a recording medium, and the code information alone corresponding to the image is printed near or overlapping the images. Read the code information alone with a code reader,
Although the original multimedia information is restored, according to the information recording medium of the present invention, a plurality of pieces of code information alone having the same content are printed so that the information can be read from any direction when being read by the code reader. Then, the code information aggregate is formed.

In addition, in the case of visually handicapped people or when groping for work, even if there is no visual information, a protrusion is provided in order to recognize the place where the code information is arranged, and the code information is provided in the vicinity thereof. A single unit may be arranged.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an information recording medium according to a first embodiment of the present invention. In this embodiment, a dot code is used as code information, and a picture code 2 has a dot code information aggregate 4 (4).
A, 4B, ..., 4G) are recorded respectively. In the figure, reference numeral 6 is a control box having a restoring means and the like, and 8 is a pen-type reader unit.

[0012] The left page 2L picture books 2, are drawn animal face portion, the portion of the ear, is a collection of the dot code itself 4A ₁ to 4A ₄ which represents information about ears dot pattern The dot code information aggregate 4A is recorded. Here, the dot code information alone 4A ₁ to 4A ₄ a dot code information alone having the same content are arranged at different angles, respectively. Similarly, 4B is an eye, 4C
Is a whisker and 4D is a dot code information aggregate containing information about the mouth.

In such a picture book 2, when the recorded portion of the dot code information alone in each dot code information aggregate 4 is traced by the reader unit 8, the information recorded from the control box 6 is recorded. Is output as a voice, for example.

Here, each dot code information aggregate 4 is
They are arranged as shown in FIG. That is, the dot code information units 4 ₁ and 4 ₂ having the same content are arranged at an angle orthogonal to each other. Similarly, 4 ₂ and 4 ₃ , 4 ₃
And 4 ₄ and 4 ₄ and 4 ₁ are arranged at an angle orthogonal to each other. In this case, in order to increase the probability of reading the data or prevent the data from being lost due to the messy operation of the reader unit 8, even if the dot code information alone in the same direction is moved up and down (dot code information alone 4 ₂ and 4). ₄ relationship) or left and right (relationship between dot code information units 4 ₁ and 4 ₃ ). Further, in order to avoid interference when reading each data, each dot code information unit is arranged with a distance of about 3 mm.

Further, a projection-shaped mark 10 is added to the center of each dot code information aggregate 4 printed, so as to serve as an index for blind people or when searching by hand.
That is, this is a mark that the data can be easily read by tracing the periphery thereof with the reader unit 8.

In this way, the dot code information single substance having the same content is arranged in a plurality of places in the same area of the picture book 2 at different angles, so that the dot code can be applied to the picture book 2 without facing the reader section 8 correctly. You can read the information. For example, a child may randomly add a reader unit 8 to the picture book 2.
You can also read the dot code information by hitting.

By arranging the dot code information associated with the picture with transparent ink near or on the picture, the dot code information can be easily provided by placing the reader section 8 at a place where the child is interested. Can read.

Moreover, since it is not necessary to store the information in the ROM or the LSI in advance, new information can be easily read. Here, the dot code information, the control box 6, the pen-type reader unit 8 and the like will be described. First, a description will be given regarding audio information such as voice and music among multimedia information.

FIG. 3 is a block diagram of an audio information recording apparatus for recording audio information such as voice and music on paper as an optically readable digital signal.

An audio signal input by the voice input device 12 such as a microphone or an audio output device is
After being amplified by the preamplifier 14 (AGC is applied in the case of microphone sound), it is converted into a digital signal by the A / D converter 16. The digitized audio signal is subjected to data compression by the compression circuit 18, and then an error correction code is added by the error correction code addition circuit 20.

Thereafter, the memory circuit 22 performs interleaving. This interleaving distributes the data array two-dimensionally according to a predetermined rule, so that when the data is returned to the original array by the reproducing apparatus, paper-like stains and scratches, that is, The error itself is dispersed, which facilitates error correction and data interpolation. This interleaving is performed by appropriately reading and outputting the data stored in the memory 22A by the interleaving circuit 22B.

The output data of the memory circuit 22 is then subjected to a x-address indicating a marker and a two-dimensional address of each block by a data adding circuit 24 according to a predetermined recording format which will be described in detail later. Then, after the y address and the error determination code are added, the modulation circuit 26 performs modulation for recording. Then, after data such as image data to be recorded together with the output data of the audio information is superimposed by the synthesizing circuit 27, the printer system or the plate making system for printing 28 takes measures for printing.

As a result, for example, it is recorded on the paper 30 in a format as shown in FIG. That is, together with the image 32 and the characters 34, the sound data converted into a digital signal is printed as the record data 36 which is the code information alone. Here, the recording data 36 is composed of a plurality of blocks 38, and each block 38 has a marker 38A,
The error correction code 38B, the audio data 38C, the x address data 38D, the y address data 38E, and the error determination code 38F.

The marker 38A, like DAT,
Normally, a pattern that does not appear due to recording modulation is used. The error correction code 38B is used for error correction of the audio data 38C. The audio data 38C corresponds to the audio signal input from the voice input device 12 such as the microphone or the audio output device. x and y address data 3
8D and 38E are data representing the position of the block 38, and the error determination code 38F is used for error determination of these x and y addresses.

Recording data 36 having such a format
Prints the data of "1" and "0" by the printer system or the printing plate making system 28 by setting "1" with black dots and "0" without black dots as in the case of a bar code, for example. Will be recorded. Hereinafter, such recording data as code information alone is referred to as a dot code.

FIG. 4B shows a situation where the sound data recorded on the paper 30 as shown in FIG. 4A is being read by the pen-type information reproducing device 40. By tracing over the dot code 36 with the pen-type information reproducing device 40 as shown in the figure, the dot code 36 can be detected, converted into a sound, and heard by the voice output device 42 such as an earphone.

FIG. 5 is a block diagram of the information reproducing apparatus 40. The information reproducing apparatus 40 includes the control box 6 and the pen-type reader section 8 and is a pen-type casing (not shown) in which parts other than the audio output device 42 such as headphones and earphones can be carried. No)). Of course, the speaker may be built in the housing. When the control box 6 and the pen-type reader unit 8 are separated, for example, only the detection unit 44 may be provided in the reader unit 8.

The detection unit 44 basically has the same function as that of an image pickup unit such as a television camera. That is, the dot code 36 on the paper surface, which is a subject, is illuminated by the light source 44A, and the reflected light is imaged by the image pickup unit 44D including a semiconductor area sensor or the like via the imaging system 44B such as a lens and the spatial filter 44C. Is detected, and is amplified by the preamplifier 44E and output.

Here, the pixel pitch of the area sensor is set to be less than or equal to the dot pitch of the dot code 36 on the image pickup surface by the sampling theorem. Further, the spatial filter 44C installed on the image pickup surface is also based on this theorem,
It is inserted to prevent the moire phenomenon (aliasing) on the imaging surface. In addition, as shown in FIG. 6A, the number of pixels of the area sensor is set in the vertical direction of a predetermined dot code 36 that is defined as being readable at once in consideration of camera shake when manually scanning the detection unit 44. It is set to be larger than the width of.
That is, (A) and (B) of FIG. 6 show the movement state of the imaging area for each certain period when the detection unit 44 is manually scanned in the arrow direction, and in particular, (A) shows dots. FIG. 9B shows a state of manual scanning when the width of the code 36 in the vertical direction is within the imaging area (camera shake is also taken into consideration), and (B) shows that the amount of the dot code 36 is large and the width in the vertical direction is one. The case where the image does not fit in the imaging area is shown. In the latter case,
At the position where the manual scanning of the dot code 36 is started, a manual scanning marker 36A for indicating it is printed.
Therefore, a large number of dot codes 36 can be detected by performing manual scanning a plurality of times along the manual scanning marker 36A.

The image signal detected by the detection unit 44 as described above is then input to the scan conversion and lens distortion correction unit 46. In the scan conversion and lens distortion correction unit 46, the input image signal is first converted into an A / D converter 46A.
Is converted into a digital signal and stored in the frame memory 46B. The frame memory 46B has a gradation of 8 bits.

The marker detection circuit 46C detects the marker 38A by scanning the image information stored in the frame memory 46B as shown in FIG. 6C. θ
The detection circuit 46D detects which address value on the image pickup surface each marker 38A detected by the marker detection circuit 46C corresponds to, and the inclination θ of the image pickup surface with respect to the arrangement direction of the dot codes from the address value. Is calculated. It should be noted that the marker detection circuit 46C, as shown in FIG. 6D, rotates the dots by approximately 90 ° as in the case of FIG. 6C in the scan only in the direction shown in FIG. 6C. When the image of the code 36 is picked up, the inclination θ may not be obtained correctly, and when scanning in the lateral direction of the block 38, θ may not be obtained correctly. Therefore, as shown in FIG. The scan in the orthogonal direction is also performed, and the correct one of the results obtained by the scans in the two orthogonal directions is selected.

On the other hand, in the lens aberration information memory 46E,
Pre-measured aberration information of the lens used in the image forming system 44B of the detection unit 44 for correcting the distortion of the lens is stored. When the address control circuit 46F next reads the data stored in the frame memory 46B, the value of the inclination θ calculated by the θ detection circuit 46D and the lens aberration stored in the lens aberration information memory 46E are read. The read address according to the information is used as the frame memory 4
6B, and scan conversion in the array direction of data is performed while performing data interpolation by the interpolation circuit 46G.

FIG. 7A shows the principle of data interpolation performed by the interpolation circuit 46G. Basically,
Interpolation data is created by a convolution filter and LPF using pixels around the position Q where data is interpolated. The pixel pitch and the scanning line pitch after the scan conversion are set below the dot pitch of the dot code based on the sampling theorem, as in the case of imaging.

In the case of simple data interpolation using four pixels around the position Q to be interpolated, Q = (D6 × F6)
+ (D7 x F7) + (D10 x F10) + (D11 x F11),
In the case of relatively accurate data interpolation using 16 surrounding pixels, Q = (D1 × F1) + (D2 × F2
) + ... + (D16 × F16) is used to create the interpolation data. Where Dn is the data amplitude value of pixel n, Fn
Is a coefficient of an interpolation convolution filter (LPF) determined according to the distance to the pixel n.

The dot code 36 read from the frame memory 46B after being subjected to the scan conversion as described above is then binarized by the binarization circuit 48 including the latch 48A and the comparator 48B. The threshold value for the binarization is determined by the threshold value determination circuit 50 by using the value of the histogram for each screen or each block in the screen. That is, the threshold value is determined according to the stain on the dot code 36, the distortion of the paper 30, the accuracy of the built-in clock, and the like. As the threshold determination circuit 50, it is preferable to use, for example, a circuit using a neural network disclosed in Japanese Patent Application No. 4-131051 by the present applicant.

In parallel with this, the frame memory 46
The dot code 36 read from B is the PLL circuit 52.
Clock pulse CK that is input to and synchronized with the reproduced data
To occur. This clock pulse CK is used as binarization and demodulation after scan conversion, and as a reference clock for an error determination circuit 56A, x, y address detection circuit 56B and a memory unit 56C in a data string adjustment unit 56 described later. .

The binarized data is demodulated by the demodulation circuit 54, and the error judgment circuit 56A in the data string adjustment unit 56 is provided.
Is input to the x, y address detection circuit 56B. The error determination circuit 56A is configured to operate the error determination code 38 in the block 38.
Using F, it is determined whether or not there is an error in the x, y address data 38D, 38E. If there is no error, x,
According to the address detected by the y-address detection circuit 56A, the data is recorded in the memory unit 56C for adjusting the audio data string. If there is an error, the audio data 38C of the block 38 is not recorded in the audio data string adjustment memory unit 56C.

The purpose of the data string adjusting unit 56 is to determine the accuracy of the scan conversion in the scan conversion and lens distortion correction unit 46 (depending on the accuracy of the reference clock and the S / N of the image pickup device) and the distortion of the paper. , To correct a slight shift generated in the data array direction and the scan direction after scan conversion. This will be described with reference to FIG. In the figure, dot codes D1, D2 and D3 indicate data for each block. The pitch of the scan lines 1, 2, 3, ... After scan conversion is
As described above, it may be set to the dot pitch of the data or less based on the sampling theorem, but in FIG.
For completeness, the dot pitch is set to 1/2. Therefore, as is clear from the figure, the dot code D1 can be detected without error in the scan line 3 after scan conversion. And D2
Is detected on the scan line 2 after scan conversion without error, and D3 is similarly detected on the scan line 1 after scan conversion without error.

Then, x in each block 38,
It is stored in the memory unit 56C for adjusting the data string according to the y addresses 38D and 38E. Next, as shown in FIG.
By manually scanning the detector 44 as shown in FIG. 6B, the voice dot code 36 on the paper 30 can be stored in the memory 56C for data string adjustment without omission.

The voice dot code whose data string has been adjusted by the data string adjusting unit 56 is
According to a reference clock CK 'generated by a reference clock generation circuit 53 which is different from the circuit 52, the data is read from the memory unit 56C for adjusting the data string. Then, at this time, de-interleaving is applied by the de-interleaving circuit 58,
Converted into a formal data string. Next, the error correction circuit 60 performs error correction using the error correction code 38B in the block 38. Then, the decoding circuit 62 decodes the compressed data, and the data interpolation circuit 64 further interpolates the audio data whose error cannot be corrected. After that, it is converted into an analog audio signal by the D / A conversion circuit 66, amplified by the amplifier 68, and converted into sound by the voice output device (earphone, headphone, speaker, etc.) 42.

As described above, audio information such as voice and music can be recorded on paper, and the reproducing device is a small portable device so that a printout or a facsimile transmission thereof can be performed. , Or printed in the form of a book by printing plate making, anywhere
You will be able to listen again and again.

The data string adjusting memory unit 56C in the data string adjusting unit 56 is not limited to the semiconductor memory, and
Other storage media such as floppy disks, optical disks, magneto-optical disks, etc. can be used.

As an example of application of the audio information recorded as described above, various ones can be considered other than the picture book described above. For example, for general use,
Language textbooks, music scores, various texts such as distance learning, product specifications, manuals for repairs, dictionaries in foreign languages, books such as encyclopedias, product catalogs, travel guides, direct mail and guides, newspapers, magazines, leaflets, Album, congratulatory, postcard,
Etc. are possible. Also, for business use, FAX (voice & fax) work instructions, minutes, electronic blackboard, OH
P, identification card (voiceprint), business card, telephone memo, sticky note,
Supply products (consumables) made by rolling fine paper into rolls, etc. are conceivable. Here, as shown in FIG. 7 (B), the consumable item means that a double-sided tape or an easily peelable glue such as a sticky note is provided on the back surface of the rolled paper 30A, and the front surface The dot code 36 as a single piece of code information is recorded on the disk, and is separated by a necessary amount so that it can be attached to various objects (hereinafter referred to as a reel seal). Further, as shown in (C) of the figure, the width of the paper 30A is widened so that the dot code 36, which is a plurality of stages of code information alone, can be recorded, and as a guideline for the manual scanning of the detection unit 44. The manual scanning marker 36B may be printed vertically and horizontally. At the same time, the marker 36B can be used as a guide for the recording position of the dot code 36. That is, a sensor is provided in the printer system 28, and the marker 3 is used by the sensor.
If the 6C is read and the cue for printing out is performed, the dot code 36 can be printed in the area surrounded by the marker 36B without fail, so that the manual scanning can be surely performed along the marker 36B. The recorded audio information can be played. Of course, dot code 36
The marker 36B may be printed at the time of printing.

The recording time of audio information is 20
In the case of a general facsimile of 0 dpi, for example, 1 inch × 7 inch (2.54 cm × 1) along one side of the paper.
When data is recorded in an area of 7.78 cm, the total number of data is 280 kbit. From now on, a marker, an address signal, an error correction code, an error determination code (however, the error determination code in this case is the x, y address 38D, 38
In addition to E, audio data 38C is also subjected to error determination) (30%) is subtracted, 196 kbit
become. Therefore, the recording time when the voice is compressed to 7 kbit / s (mobile communication bit rate) is 28 seconds. When recording on the entire back side of A4 size double-sided facsimile paper, 7 inches x 10 inches (17.78 cm x 2)
Since the area of 5.4 cm) can be taken, it is possible to record 4.7 minutes of voice.

Further, in the case of a 400 dpi G4 facsimile, as a result of the same calculation as above, 7 inches × 10
It is possible to record 18.8 minutes of voice in the inch area. For high-quality printing at 1500 dpi, 5 mm x 30 m
When printing is performed in the area of m, the result of the calculation similar to the above enables 52.3 seconds of voice recording. 10m
When printed on an mx 75 mm tape-shaped area, high-quality sound (30 kbit /
When calculated with the audio signal of s), one minute of audio recording is possible.

In FIG. 9, the dot code 36 is recorded on the paper 30 on which the pictures and characters are printed by the transparent paint (ink) 74 which is easily specularly reflected (totally reflected). And
Polarization filters 44F and 44G are provided between the light source 44A and the imaging system 44B in the detection unit 44, and these polarization filters 4F and 44G are provided.
By aligning the polarization planes of 4F and 44G, the direction of polarization of the reflected light from the inside (the surface of the paper 30) and the reflected light from the opening of the hole 74A through which the transparent paint 74 is removed according to the code is polarized. Polarization filter 4
With 4G, 1/2 will be cut, and since the difference in the amount of light between normal reflected light and total reflected light is originally large,
The contrast of the dot code recorded with the transparent paint 74 is emphasized and the image is captured.

Further, the paper 30 is subjected to a surface treatment such as mirror finishing so that the surface is easily specularly reflected, and the transparent paint 74 is made of a material having a refractive index higher than that of the surface-treated surface and having a quarter wavelength. If a film with a certain thickness (in consideration of the change in the optical path length depending on the incident angle, the optical path length in the transparent paint becomes 1/4) is used, the effect of the reflection-amplifying coat prevents the light that obliquely strikes. , More easily amplified and easily reflected on the surface (regular reflection).

In this case, for example, the dot code is formed by
Fine chemical etching or the like is performed to roughen the holes corresponding to the dots to reduce the reflectance. When the dot code 36 is recorded by the transparent paint 74 in this way, it can be recorded on a character or a picture. Therefore, when used together with the character or picture, the recording capacity is increased as compared with the case of printing with visible ink. be able to.

Also, instead of the transparent paint, a transparent fluorescent paint may be used, or it may be colored and multiplexed. In the case of this color, a normal color ink can be used, or a transparent ink can be mixed with a dye to form a color.

Here, as an example, the transparent ink may be an ink composed of a volatile liquid and a binder (for example, there are phenol resin varnish, linseed oil varnish, and alkyd resin), and the dye may be a pigment.

Next, the information to be recorded is not limited to audio information such as voice and music, but video information obtained from a camera, a video, etc., and a personal computer (hereinafter,
An example of handling so-called multimedia information including digital code data obtained from a personal computer), a word processor (hereinafter referred to as a word processor), and the like will be described.

FIG. 10 is a block diagram of a multimedia information recording apparatus for recording such multimedia information. Of the multimedia information, audio information is input from the microphone or audio output device 120 as in the case of FIG.
After being amplified at 22, it is converted to digital at the A / D converter 124 and supplied to the compression processing unit 126.

In the compression processing unit 126, the input digital audio signal is selectively supplied to the voice compression circuit 130 such as the ADPCM circuit and the voice synthesis coding circuit 132 by the switch 128. The voice compression circuit 130 performs data compression by performing adaptive differential PCM on the input digital audio information. The voice synthesis coding circuit 132 recognizes one voice from the input digital audio information and then converts it into a code. This is because while the ADPCM encodes it in the form of voice information to reduce the amount of data, that is, to process the data situation, it is changed to a different synthetic code once, so that the relative data It reduces the amount.
Regarding the switching of the switch 128, for example, the user manually switches the switch 128 according to the purpose. Alternatively, for example, high-quality information such as information from an audio output device is passed through the voice compression circuit 130, and, for example, a person's voice or comment from a microphone is passed through the voice synthesis coding circuit 132. By predetermining in this way, it is also possible to adopt a configuration in which which audio information is input is recognized at the front stage of the switch and automatically switched.

Further, various data, which has already been formed as digital code data, from a personal computer, word processor, CAD, electronic notebook, communication, etc., is first in a data form via an interface (hereinafter referred to as I / F) 134. It is input to the determination circuit 136. The data form determination circuit 136 basically determines whether or not compression is possible in the compression processing unit 126 in the subsequent stage, and some compression processing has already been performed on the data, and the compression processing unit 126 in the subsequent stage. For information for which the effect of the above is not obtained, the compression processing unit 126
Is directly passed to the subsequent stage of the compression processing unit 126, and when the input data is uncompressed data,
It is sent to the compression processing unit 126.

The data judged to be uncompressed code data by the data form judging section 136 is inputted to the compression processing section 126, and the code data is optimized by the compression circuit 138 such as Huffman, arithmetic code and dibrempel. The compression process is performed to compress to. The compression circuit 138 also performs compression processing on the output of the speech synthesis coding circuit 132.

The speech synthesis coding circuit 132 is used.
May recognize character information other than voice and convert it into voice synthesis code. The image information of the camera or video output device 140 is amplified by the preamplifier 142, A / D converted by the A / D converter 144, and then supplied to the compression processing unit 126.

In the compression processing unit 126, the image area determination and separation circuit 146 determines whether the input image information is a binary image such as a handwritten character or a graph or a multivalued image such as a natural image. . This image area determination and separation circuit 146
For example, the binary image data and the multi-valued image data are separated by using a discriminant image area separation method using a neural network as disclosed in Japanese Patent Application No. 5-163635 of the present applicant. Then, the binary image data is compressed by a general binary compression processing circuit 148 such as MR / MH / MMR such as JBIG as binary compression, and the multivalued image data is a still image such as DPCM or JPEG. It is compressed by the multi-level compression processing circuit 150 using the compression function of.

The data subjected to the compression processing as described above are appropriately combined by the data combining processing section 152. It should be noted that it is not always necessary to provide all the systems for inputting and compressing the respective information in parallel, and one or a plurality of systems may be combined as appropriate according to the purpose. Therefore, the data synthesis processing unit 1
52 is not always necessary, data system is 1
If there is only one type, this can be omitted and the error correction code adding section 154 in the next stage can be directly input.

The error correction code adding section 154 adds the error correction code and inputs it to the data memory section 156. The data memory unit 156 stores the respective data, and thereafter, interleave processing is performed. This actually reduces the error when recorded as a dot code and played it back, eg
This is a process of dispersing continuous data strings at appropriately distant positions in order to improve the correction capability by reducing block errors due to noise or the like. That is, the work of reducing the risk of burst errors into bit errors is performed.

With respect to the interleaved data, the address data adding unit 158 further causes the address of the block and the error determination code (CR) for the address.
C, etc.) is added, and the result is input to the modulation circuit 160. The modulation circuit 160 is, for example, 8-10 modulation.

In the above embodiment, it goes without saying that a code for error correction may be added after interleaving. Then, the marker adding unit 162 uses the 25
A marker is generated and added using a data string that does not exist in the six data strings. By adding the marker after the modulation as described above, it is possible to eliminate the problem that even the marker is also modulated and it is difficult to recognize the marker as a marker.

The data to which the marker has been added in this way is sent to the synthesizing and editing processing section 164 and recorded on a recording paper other than the generated data, for example, synthesized with an image, a title, characters, or the like, or The layout and the like are edited, and the output format to the printer and the data format corresponding to the printing plate making are converted and sent to the next printer system or the printing plate making system 166. And finally, with this printer system and plate making system for printing,
It is printed on sheets, tapes, and printed materials.

The editing process in the synthesizing / editing processing unit 164 is performed by a code in units of words, contents, etc., in which the layout of the paper surface information and the dot code, the dot size of the code are matched with the resolution of the printing machine, the printer, etc. This includes editing work such that the length is appropriately divided and the stage is changed, that is, the line is changed to the next line.

The printed matter thus printed is, for example, F
It is transmitted by AX168. Of course, instead of printing the data generated by the composition and editing processing unit, the FA
X may be transmitted.

Here, referring to FIG. 11, the dot code 17 in the present embodiment different from the dot code in the above-mentioned embodiment.
The concept of 0 will be explained. In the data format of the dot code 170 of this embodiment, one block 172 consists of a marker 174, a block address 176, address error detection / correction data 178, and a data area 180 in which actual data is stored. . That is, in the example described with reference to FIG. 4A, one block is one-dimensionally arranged in the line direction, but in this example, it is two-dimensionally expanded. Has been formed. The blocks 172 are arranged two-dimensionally vertically, horizontally, and two-dimensionally, and the blocks 172 are gathered to form a dot code 170 which is a single piece of code information.

Next, the structure of the multimedia information reproducing apparatus will be described with reference to the block diagram of FIG. This information reproducing apparatus includes a detection unit 1 for reading a dot code from a sheet 182 on which the dot code 170 is printed.
84, a scan conversion unit 18 for recognizing the image data supplied from the detection unit 184 as a dot code and performing normalization.
6, a binarization processing unit 188 for converting multi-valued data into a binary value, a demodulation unit 190, an adjustment unit 192 for adjusting a data string, a data error correction unit 194 for correcting a read error and a data error during reproduction, and a data, respectively. A data separation unit 196 that separates the data according to the attributes, a decompression processing unit for the data compression processing according to each attribute, a display unit or a reproduction unit,
Alternatively, it consists of another input device.

In the detecting section 184, the dot code 170 on the sheet 182 is illuminated by the light source 198, and the reflected light is provided with the imaging optical system 200 such as a lens and the spatial filter 202 for removing moire and the like. The image information is converted into an electric signal through an image pickup unit 204 such as a CCD or CMD, which is detected as an image signal, amplified by a preamplifier 206, and output. The light source 198, the imaging optical system 200, the spatial filter 202, the imaging unit 204, and the preamplifier 20.
Reference numeral 6 denotes an external light shielding portion 208 for preventing external light disturbance.
Composed within. The image signal amplified by the preamplifier 206 is converted into digital information by the A / D conversion unit 210 and supplied to the scan conversion unit 186 at the next stage.

The image pickup section 204 is controlled by the image pickup section control section 212. For example, when an interline transfer type CCD is used as the imaging unit 204,
The image pickup unit control unit 212 stores a V blank signal for vertical synchronization, an image pickup device reset pulse signal for resetting information charges, and a charge transfer accumulation unit arranged two-dimensionally as control signals for the image pickup unit 204. Charge transfer gate pulse signal for transmitting the electric charge to a plurality of vertical shift registers, and a horizontal charge transfer CLK which is a transfer clock signal of the horizontal shift register for transferring the electric charge in the horizontal direction and outputting it to the outside.
A signal, a vertical charge transfer pulse signal for vertically transferring the plurality of vertical shift register charges and sending the charges to the horizontal shift register, and the like are output. The timing of these signals is shown in FIG.

Then, the image pickup section control section 212 gives the light source a light emitting cell control pulse for timing the light emission of the light source 198 in synchronization with this timing.
Basically, the timing chart of FIG. 13 is a conceptual diagram for one field. The image data is read from the V blank of this one field to the V blank.
The light source 198 performs pulse lighting instead of continuous lighting, and performs subsequent pulse lighting in synchronization with each field. In this case, in order to prevent the clock noise for pulse lighting from entering the signal output, V
The timing is controlled such that the exposure is performed during the blanking period, that is, while the image charge is not output. That is, the light emitting cell control pulse is a very thin digital clock pulse that is generated instantaneously and gives a large amount of power to the light source, so it is possible to prevent noise due to it from entering the analog image signal. This is necessary, and as a measure therefor, the light source is pulsed during the V blanking period. By doing so, the S / N is improved. Further, pulse lighting means shortening the light emission time, and thus has a great effect of eliminating the influence of blurring due to shake and movement of manual operation. This enables high-speed scanning.

In addition, in order to minimize the S / N deterioration even when the reproducing apparatus is tilted and the external light shielding portion 208 is present and external light or other disturbance is introduced for some reason. , Immediately before the light source 198 is caused to emit light in the V blanking period, the image sensor reset pulse is output once to reset the image signal, light is emitted immediately after that, and immediately thereafter.
I try to read it.

Here, returning to FIG. 12, the scan conversion unit 186.
Will be explained. The scan conversion unit 186 recognizes the image data supplied from the detection unit 184 as a dot code,
This is the part for normalizing. As the method, first, the image data from the detection unit 184 is stored in the image memory 214, and once read out from the image memory 214 and sent to the marker detection unit 216. The marker detection unit 216 detects a marker for each block. Then, the data array direction detection unit 218
Uses the marker to detect rotation or tilt and the data array direction. Based on the result, the address controller 220 reads out the image data from the image memory 214 so as to correct it and supplies it to the interpolation circuit 222.
At this time, lens aberration information is read from the memory 224 for correcting distortion of lens aberration in the imaging optical system 200 of the detection unit 184, and lens correction is also performed. Then, the interpolation circuit 222 performs interpolation processing on the image data and converts it into the original dot code pattern.

The output of the interpolation circuit 222 is the binarization processing unit 1.
88. Basically, as can be seen from FIG. 14, the dot code 170 is a white and black pattern, that is, binary information, and is thus binarized by the binarization processing unit 188. At that time, the threshold determination circuit 226 adaptively performs binarization while determining the threshold in consideration of the influence of disturbance, the influence of the signal amplitude, and the like.

Since the modulation as described with reference to FIG. 10 is performed, the demodulation unit 190 first demodulates it, and then the data is input to the data string adjustment unit 192. In the data string adjusting unit 192, the block address detecting unit 228 first detects the block address of the above-mentioned two-dimensional block, and then the block address error detection,
After the correction unit 230 detects and corrects the block address error, the address control unit 232 stores the data in the block unit in the data memory unit 234. By storing in block address units in this way, data can be stored without waste even if the data is lost in the middle or entered in the middle.

After that, the data read from the data memory unit 234 is corrected by the data error correction unit 194. The output of the error correction unit 194 is branched into two, and one of them is sent as digital data to a personal computer, a word processor, an electronic notebook, etc. via the I / F 236. The other is supplied to the data separation unit 196, where images, handwritten characters and graphs, characters and line drawings,
Sound (2: the original sound and the one with speech synthesis)
Types).

The image corresponds to a natural image and is a multivalued image. The decompression processing unit 238 performs decompression processing corresponding to JPEG at the time of compression, and the data interpolation circuit 240 further interpolates error-uncorrectable data.

For binary image information such as handwritten characters and graphs, the decompression processing unit 242 performs decompression processing for MR / MH / MMR, etc., which has been compressed, and further the data interpolation circuit 244. Interpolation of data that cannot be error-corrected is performed.

Characters and line drawings are converted into another pattern for display through the PDL (page description language) processing unit 246. In this case, as for the line drawing and the characters, if the compression processing for the code is performed after being encoded, the expansion processing unit 248 corresponding thereto performs the expansion (Huffman, Gibblempel, etc.) processing, and then PD
It is adapted to be supplied to the L processing unit 246.

The data interpolation circuits 240, 244 and P
The output of the DL processing unit 246 is the synthesis or switching circuit 25.
The data is combined or selected by 0, converted into an analog signal by the D / A converter 252, and then displayed on a display device 254 such as a CRT (television monitor) or FMD (face mounted display). The FMD is a spectacles-type monitor (handy monitor) for wearing on the face, and is effective for applications such as virtual reality, and for viewing a large screen in a small place.

For the voice information, the decompression processing unit 2
At 56, decompression processing is performed on the ADPCM, and at the data interpolating circuit 258, error-uncorrectable data is interpolated. Alternatively, in the case of voice synthesis, the voice synthesis unit 260 receives the voice synthesis code, synthesizes the voice from the code, and outputs the synthesized voice. In this case,
When the code itself is compressed, the decompression processing unit 262 performs decompression processing such as Huffman or Jiblempel in the same manner as the above character and line drawing, and then performs voice synthesis.

The decompression processing unit 262 can also be used as the decompression processing unit 248. In that case, the data is expanded by the switches SW1 and SW depending on the attribute of the data to be decompressed.
2, SW3 is appropriately switched, and the PDL processing unit 24
6, or input to the voice synthesizer 260.

The data interpolation circuit 258 and the voice synthesis unit 26.
The output of 0 is synthesized or selected by the synthesis or switching circuit 264, converted into an analog signal by the D / A conversion unit 266, and then output to a speaker, headphones, or other similar audio output device 268.

Characters and line drawings are directly output from the data separation unit 196 to the page printer, plotter, etc. 270, and the characters are printed on paper as word processing characters, or line drawings, etc. are output as a plotter as drawings. It can also be done.

The reader section 8 shown in FIG. 1 may include, for example, the detection section 184 in the above-described configuration, and the other sections may be configured in the control box 6.
Of course, the reader unit 8 may include a structure at a stage subsequent to the detection unit 184.

Next, a second embodiment of the present invention will be described with reference to FIG. In the present embodiment, the code information units consisting of dot codes are arranged radially with the projection mark 10 as the center and the angle of adjacent code information units is 45 degrees. In this case, the direction of the data is outward from the center, as in the first embodiment. Also, in order to avoid interference when reading each data,
The closest point of each code information unit is about 3 m
It is placed m away.

Even in the case of the code information aggregate 4 in which the code information alone is arranged, as in the first embodiment, the picture book 2 is prepared.
Since the data of the same contents are arranged at different angles in the same area, the data can be obtained from any one of the code information alone without facing the picture book 2 and the reader unit 8 correctly. You can read it.

FIG. 14A is a diagram showing a third embodiment of the present invention, which is an example in which code information units having the same content are randomly arranged as the code information aggregate 4. By randomly printing a large number of pieces of code information in various directions in this manner, the probability that the reader unit 8 can read the trace information increases.

FIG. 14B is a diagram showing a fourth embodiment of the present invention. As the code information aggregate 4 having the same content, the code information single bodies having the same content are arranged in a ring around the protrusion mark 10. It was done.

With such an arrangement, the probability that information can be read out becomes high in view of the habit of a person who scans a neighborhood where data is likely to be drawn in a circle. Although the present invention has been described above based on the embodiments, the present invention is not limited to the above-described embodiments, and various modifications and applications are possible within the scope of the gist of the present invention. Here, the summary of the present invention is summarized as follows.

(1) In an information recording medium in which multimedia information including at least one of audio information, video information and digital code data is recorded as optically readable code information, the code information is the same as each other. An information recording medium comprising a code information aggregate formed by collecting a plurality of code information units having the contents of 1. in the same area.

That is, by arranging a plurality of code information units having the same content in the same area of the information recording medium in this manner, the data can be read without facing the information recording medium and correctly applying the reader section. become. Moreover, since this data does not need to be stored in the ROM or LSI in advance, new information can be easily read.

(2) The information recording medium as described in (1), wherein at least two of the code information units having the same content have a predetermined angle in the relative angle of the data arrangement.
That is, since the same code information unit is arranged at a plurality of different angles in the same area of the information recording medium, the data can be read at any angle.

(3) The information recording medium according to (1), characterized in that at least two of the code information units having the same content are separated by a predetermined distance or more. That is, it is possible to prevent the code information units having the same contents from overlapping and mutual data from interfering with each other during reading.

(4) The information recording medium described in (1) is characterized in that the relative angles of arrangement of data of a plurality of code information units having the same content are arranged at random angles. That is, it is possible to deal with random movements of human hands.
In addition, it is possible to fill the gap between the images that are created by chance, and it is possible to effectively use the space, and the flexibility in arrangement is high.

(5) The information recording medium described in (1) is characterized in that the plurality of pieces of code information having the same content are arranged in a ring shape around the point where the data is arranged in a row. In other words, if you arrange data horizontally or radially, you can not handle the most likely scan due to the human habit of scanning in a circle around the likely data, but arrange the code information unit in a ring. As a result, the probability of reading information can be increased.

(6) The information recording medium as described in (1), characterized in that a plurality of code information units are formed around the projection or around the projection. That is, since the position where the information is arranged can be obtained in addition to the visual sense, the probability of reading the data becomes high.

(7) When multimedia information including at least one of audio information, video information and digital code data is recorded on a recording medium as optically readable code information, the code information is the same as each other. A method of recording code information on an information recording medium, characterized by recording a plurality of code information units each having a content in the same area by collecting them.

That is, by recording the code information unit having the same content in a plurality of locations in the same area of the information recording medium, the data can be read without facing the information recording medium and correctly applying the reader section. Like

[0098]

As described in detail above, according to the present invention,
It is possible to provide an information recording medium capable of reading the code information without storing the information in advance in the ROM or the like, or without causing the reader section to correctly face the code information and scan.

[Brief description of drawings]

FIG. 1 is a diagram showing an information recording medium in a first embodiment of the present invention.

FIG. 2A is a diagram showing an arrangement of code information units of a code information aggregate in the first embodiment, FIG. 2B is a diagram showing protrusion marks, and FIG. It is a figure which shows arrangement | positioning of the code information single body of the code information aggregate in 2nd Example.

FIG. 3 is a block configuration diagram of a dot coded audio information recording apparatus in the first embodiment of the present invention.

FIG. 4A is a diagram showing a dot code recording format, and FIG. 4B is a diagram showing a usage state of the reproducing apparatus in the first embodiment.

FIG. 5 is a block diagram of a playback device in the first embodiment.

6A and 6B are explanatory diagrams of manual scanning, and FIGS. 6C and 6D are explanatory diagrams of scan conversion.

FIG. 7A is a diagram for explaining data interpolation associated with scan conversion, and FIGS. 7B and 7C are diagrams showing examples of recording media.

FIG. 8 is an explanatory diagram of data string adjustment.

FIG. 9 is a diagram showing the structure of a reproducing apparatus in the third embodiment.

FIG. 10 is a block diagram of a multimedia information recording device.

FIG. 11 is a conceptual diagram of a dot code.

FIG. 12 is a block diagram of a multimedia information reproducing apparatus.

13 is a light source emission timing chart in the multimedia information reproducing apparatus of FIG.

FIGS. 14A and 14B are diagrams showing the arrangement of code information units of the code information aggregate in the third and fourth embodiments of the present invention, respectively.

[Explanation of symbols]

2 ... Picture book 4, 4A, 4B, ..., 4G ... Code information aggregate 4A _{1 to} 4A ₄ , 4 ₁ to 4 ₄ ... Code information alone 6 ... Control box 8 ... Pen type reader unit 10 ... Projection mark

Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location G09B 5/00 G11B 20/12 101 9295-5D

Claims (6)

[Claims] 1. An information recording medium in which multimedia information including at least one of audio information, video information and digital code data is recorded as optically readable code information, wherein the code information is the same as each other. An information recording medium comprising a code information aggregate formed by collecting a plurality of code information units having contents in the same area. 2. The information recording medium according to claim 1, wherein at least two pieces of code information alone having the same content have a predetermined angle in the relative angle of the data arrangement. 3. The information recording medium according to claim 1, wherein at least two of the code information units having the same content are separated by a predetermined distance or more. 4. The information recording medium according to claim 1, wherein the relative angles of arrangement of data of a plurality of pieces of code information having the same content are arranged at random angles. 5. The information recording medium according to claim 1, wherein the arrangement of the data of a plurality of pieces of code information having the same content is arranged in a ring around a predetermined point. 6. The information recording medium according to claim 1, wherein a plurality of code information units are formed on the periphery of the projection or around the projection.