JPH095902A - Information recording method and recorder - Google Patents

Abstract

PURPOSE: To embody an information recording method and information recorder capable of recording information at a high density. CONSTITUTION: Color dots 21 to 23 are arranged according to the data to be recorded and are formed by printing on a recording medium 26. These color dots 21 to 23 are dots of respectively different colors. The dots 21 are cyan, the dots 22 are magenta and the dots 23 are yellow. The colorless printing indicates 2 bit data '00', the cyan '01', the magenta '10' and the yellow '11'. The dots 24 at both ends are dots for adjusting tracking. A row 71 denotes data '110011101001'. While the 12 dots are needed including the colorless dot as one dot in the conventional recording method in order to indicate such data, the indication of the data is possible with the 6 dots in the method.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of recording information such as voice and an information recording device.

[0002]

2. Description of the Related Art An information recording camera having a microphone and a voice recording device such as a RAM incorporated in a camera for taking an optical image using a photographic film such as a silver salt film is disclosed in Japanese Patent Laid-Open No. 2-29.
7536 and JP-A-63-221335. In the cameras described in these publications, there is disclosed a method of recording voice information at the time of taking a photograph together with an optical image and adding the voice information at the time of taking a photograph to a photographic print.

FIG. 12 is a diagram showing an information recording method in the information recording camera described in Japanese Patent Laid-Open No. 2-297536. As a first method of recording this information, as shown in FIG.
An optical image is recorded on the photographic film 52 by using an information recording camera 51 having a built-in camera, and audio information at the time of taking a photograph is recorded on the RAM 53.

Then, the magnetic tape 54 to which the voice information in the RAM 53 is copied is attached to the lower part or the back surface of the photographic print 55 obtained by developing the photographic film 52, thereby adding the voice information to the photographic print 55. A photographic print 66 is created. Then, the reproduction of the sound recorded on the magnetic tape attached to the photographic print 66 is performed by setting the photographic print 66 in the reproducing device 56 having a magnetic head.

A second method of recording information is shown in FIG.
As shown in FIG. 2B, the voice information recorded in the RAM 53 is copied to the magnetic disk 57. On the other hand, to the photographic print 60 itself, the audio information recorded on the magnetic disk 57 and the information for associating each photographic print with each other are added in the form of a barcode 59. The audio recorded on the magnetic disk 57 is reproduced by the reproducing device 5.
With the magnetic disk 57 set in 8, the bar code 59 of the photographic print 60 is read, and the audio information corresponding to the read bar code is read from the magnetic disk 57 and reproduced.

FIG. 13 shows the above-mentioned Japanese Patent Laid-Open No. 63-221335.
It is a figure which shows the information recording method described in the publication. An information recording camera 62 including a microphone, a RAM, and a device 61 that emits light in synchronization with a voice signal is used to record an optical image on a photographic film and voice information at the time of taking a photograph on a RAM. Then, in the camera 62, the voice information at the time of taking a photograph recorded in the RAM is recorded on the photographic film 63 as a talkie pattern (optical recording). Here, the audio signal is recorded at a position adjacent to the optical image recording section.

By developing and printing this photographic film 63, a photographic print 64 having voice information can be obtained. Then, the reproduction of the sound is performed by reading the talkie pattern recorded on the photographic film by using the light by the sound reproducing device 65. By the above method, it is possible to add audio information to a photograph having only static optical information. Further, it is possible to add information other than voice to the photograph by the above recording method.

[0008]

However, the above-mentioned prior art has a problem that it is difficult to increase the recording density of voice information and the like, and the amount of recordable information is small.
Generally, 16kH is required to reproduce the sound of musical instruments without any problem.
By sampling z, ADPCM (Adaptive
Differential Pulse Code M
The coding method requires about 4 bits. In this case, photographic film 1
In order to have 10 seconds of voice information per piece, 16k
Hz × 4 × 10 seconds = 640 kbits = 80 kbytes of memory capacity is required.

In the information recording method shown in FIG. 12A, since magnetic recording is used for recording audio information, the recording wavelength is shortened and a plurality of signal tracks are provided, so that the memory is Capacity can be secured. However, when storing photographic prints, an album or the like in which photographic prints are inserted and held between a transparent film and a mount or the like is used.

For this reason, if the photographic prints are stored in this album, a transparent film is interposed between the photographic prints and the reading magnetic head, so that a spacing loss occurs. Therefore, the signal read from the photographic print is reduced, and there is a problem that the sound cannot be sufficiently reproduced.

Further, in the information recording method shown in FIG. 12B, since the signal is reproduced by using light, it is possible to reproduce the photographic print as it is attached to the album. However, the signal recording method using the bar code cannot increase the memory capacity so much that the audio information can be recorded by itself. Therefore, it is necessary to separately use a recording medium such as a magnetic disk to compensate for this, and there is a problem that handling is complicated.

Further, in the method shown in FIG. 13, since the signal is reproduced by using light, the signal can be read through the transparent film while the photographic print is still attached to the album. Further, since the audio signal is recorded on the photographic print, there is an advantage that another recording medium is not required. However, in the signal recording method using the talkie pattern, the memory capacity cannot be increased and the sufficient information recording capacity cannot be secured, like the above-mentioned bar code. Therefore, there is a problem that the amount of information to be recorded must be reduced.

In view of the above background, an object of the present invention is to realize an information recording method and an information recording apparatus capable of recording information at high density.

[0014]

In order to achieve the above object, the present invention is configured as follows. In the information recording method, a digital signal is converted into a (1 + n) base number, where n is a natural number of 2 or more, and the (1 + n) base number is converted into (1 + n) kinds of colors including colorlessness, and these colors are respectively converted. A plurality of color dots shown are sequentially arranged and printed on the recording medium in correspondence with the digital signal.

Preferably, in the above information recording method,
The shape of the color dot is a substantially circular shape having a diameter of 10 μm to 200 μm. Further, preferably, in the above information recording method, when the printing pitch of the color dots is p and the diameter of the color dots is d, d ≦ p.

Preferably, in the above information recording method, n is 3 and the (1 + n) kinds of colors are colorless,
The four colors are cyan, magenta, and yellow. Further, preferably, in the above information recording method, the color dots are arranged in rows and columns on the recording medium and printed, and dots for tracking adjustment are printed on both outer sides of at least each row.

Further, preferably, in the above information recording method, the tracking adjustment dot is a black dot. Further, preferably, in the above information recording method,
The digital signal is a voice information signal.

Further, preferably, in the above information recording method, a recording medium on which color dots are printed is attached to at least a part of an object. Preferably, in the above information recording method, the object is a photographic print. Further, preferably, in the information recording method, the graphic is printed on the recording medium, and the color dots are printed on at least a part of the recording medium.

In the information recording device, the audio signal input means, the A / D conversion means for converting the audio signal input from the audio signal input means into a digital signal, and at least the conversion by the A / D conversion means. The generated digital signal is converted into a (1 + n) base number, where n is a natural number of 2 or more, and this (1 + n) base number includes colorless (1 + n) base number.
n) Color dot conversion means for converting into color dot signals of different colors, and a plurality of color dots respectively indicating these colors are made to correspond to digital signals according to the color dot signals from the color dot conversion means, and the recording medium is recorded. And a printing unit for sequentially printing and printing.

Preferably, in the above information recording device,
Graphic information input means and digital audio signal input means are further provided, and the color dot conversion means converts the digital signal from the digital audio signal input means into (1 + n).
Convert to a base number, and convert this (1 + n) base number to colorless (1+
n) color dot signals of different colors, and the printing means, in accordance with the color dot signals from the color dot converting means, causes the plurality of color dots respectively indicating these colors to correspond to the digital signals, and prints on the recording medium. Are sequentially arranged and printed, and the graphic input from the graphic information input means is printed on the recording medium.

Further, preferably, in the above information recording apparatus, a color dot signal reading means for reading a color dot signal printed on a recording medium and a color dot signal read by the color dot signal reading means are converted into digital signals. It further comprises color dot / digital signal converting means for converting, and a means for converting the digital signal converted by the digital signal converting means into an audio signal and generating an audio in accordance with the converted audio signal.

[0022]

By printing the information to be recorded with color dots, a high recording density can be achieved. When multiple types of colors are used for printing and information corresponding to the types of colors is given to the dots, the relationship between the type n of colors used and the number of data that can be given to one dot is 1 + n. Become. However, n is a natural number of 1 or more.

That is, by adding two or more color information to the dots, multi-value recording of digital signals or more becomes possible and the recording density can be improved. That is, when three kinds of colors are used as compared with the case of using one kind of color (for example, black) like a barcode expressing a digital signal, the recording density is doubled and seven kinds of colors are used. When color is used, the recording density is tripled.

As described above, by using a plurality of types of colors for dot formation, it is possible to achieve a higher recording density than before, and to reduce the information recording area and the long recording time as compared with the conventional technology. Can be achieved.

Further, the recording medium may be paper, film or the like as long as the color dots have a surface property that can be clearly discriminated. The method of use may also be such that the information signal recording medium recorded according to the present invention may be stuck on a paper, a film or the like on which other information is printed or displayed by other means, and the same recording medium may be used. It is also possible to print at the same time with the picture, characters, etc.

Further, by using an optical method for reading the information signal, there is no problem even if a transparent film or the like which transmits the light necessary for reading is present on the recording medium of the present invention. As described above, according to the present invention, a high-density information recording method can be realized, and its reading can be performed with less restrictions and easier than before.

[0027]

Embodiments of the present invention will be described below with reference to the accompanying drawings. (First Embodiment) FIG. 1 is an explanatory diagram of an information recording method according to a first embodiment of the present invention, and is a diagram showing a dot array representing information on a recording medium printed using this recording method. is there.

In FIG. 1, on the recording medium 26, according to the data recorded by the color dots 21, 22, 23,
Arranged and printed. The color dots 21, 22, and 23 are dots of different colors, for example, the dot 21 is cyan, the dot 22 is magenta, and the dot 23 is yellow. Each color dot corresponds to 2-bit data as shown in FIG.

That is, 2-bit data "0" for no print color.
0 indicates, cyan indicates data “01”, magenta indicates data “10”, and yellow indicates data “11”.

Further, in FIG. 1, an arrow 25 indicates the direction of sending the recording medium 26 to the data reading device when reading the data printed on the recording medium 26. The respective color dots 21, 22, 23 are arranged in the direction orthogonal to the above-mentioned sending direction 25, and the sending direction 25
When the row in the direction parallel to is a column, one row is a set and the rows are sequentially arranged in the column direction.

As a specific printing order, for example, the first dots A to B, C, and D of the row 71 are sequentially printed in the column direction, and color dots corresponding to the data shown in FIG. 2 are printed. In addition,
In the example of FIG. 1, the dots 24 at both ends are dots for tracking adjustment as will be described later, and are not dots indicating data. Then, the line 71 shows the data “11001”.
1101001 ″.

Next, when the printing of the set line is completed, the recording medium 26 is sent out by a predetermined pitch, and the printing of the next line 72 is performed in the same manner as the line 71. Thereafter, the above-described operation is repeated to print the color dots in the rows 73, ... And obtain the final color dot array.

Here, the dot pitches in the column and row directions differ depending on the dot diameters, but if the dot diameter is d and the pitch is p, then at least d≤p. Specifically, when the diameter of each dot is 50 μm,
Printing is performed so that the pitch in the row direction and the column direction is 55 μm. If the relationship (d ≦ p) is satisfied, there is no problem even if the pitches in the column direction and the row direction are different.

The dots 24 at both ends in the row direction of FIG.
Is a dot for tracking adjustment for determining the dot position in the row and column directions during reproduction, and the color of this tracking adjustment dot 24 is the dot 2 for digital signal.
Any color may be used as long as it is different from the colors of 1, 22, 23 and the recording medium 26. In the example of FIG. 1, black dots are used so that they can be easily distinguished from digital signals. The printing of the tracking adjustment dots 24 is usually performed at the same time as the digital signal dots 21, 22, and 23, and the shapes thereof are also substantially the same.

In order to protect the dots after printing, a transparent organic thin film such as a vinyl film may be attached or covered on the printing surface of the recording medium 26. However, it goes without saying that the organic thin film must have the transparency and surface properties necessary for dot reading. The recording medium 26 may be made of any material such as an organic substance made of fibers such as paper and cloth, an inorganic substance such as glass and ceramics, a metallic substance such as aluminum and the like as long as printing is possible, but at least each dot is separated. It goes without saying that a surface property that can be distinguished by the above is required. The printing ink may be any oil-based or water-based ink that can print.

As described above, according to the information recording method according to the first embodiment of the present invention, the digital data has four color dots (colorless is also one color), that is, colorless, cyan, magenta, and yellow. Since it was expressed with the dot of
It is possible to realize an optical information recording method capable of printing a large amount of information without increasing the print area.

For example, the row 71 in FIG. 1 represents the data "1100111101001" as described above, but in the first embodiment of the present invention, the colorless portion is also 1.
If dots are used, the above data can be represented by 6 dots. On the other hand, two colors (for example,
In the case of a method of expressing data in colorless and black), 12 dots are required in order to represent the above-mentioned data “1100111101001” if the colorless portion is also 1 dot. This requires twice as many dots as the first embodiment of the present invention.

That is, according to the first embodiment of the present invention, it is possible to record twice as much information as in the conventional example in the same information recording area.

The above-mentioned example is an example of using color dots of three colors except for colorless, but it is also possible to use color dots of four or more colors. A larger amount of information can be recorded by increasing the number of colors.

That is, when data is represented by dots of one color other than colorless as in the conventional example, as shown in FIG. 14, the size (diameter) and recording density of dots printed on the recording medium are shown. It is proportional to (K bytes / cm ² ), and the smaller the dots, the higher the recording density. For example, when the dot diameter is 10 μm, a recording density of about 100 kbyte / cm ² can be obtained.

On the other hand, when data is represented by dots of three or more colors excluding colorless, as shown in FIG. 3, the number of colors used for recording dots is three ((b) of FIG. 3). , 7 colors ((c) of FIG. 3) and 15 colors ((d) of FIG. 3). As shown in FIG. 3, compared with the recording density when one type of color is used ((a) in FIG. 3), when three types of colors are used, the recording density is approximately doubled and seven types are used. The recording density is about 3 times higher when the color of No. is used and about 4 times higher when the 15 kinds of colors are used.

Next, a first embodiment of an audio signal recording apparatus for recording an audio signal on a recording medium by the above-described information recording method of the present invention will be described. FIG. 4 shows a voice signal.
2 shows a schematic configuration of an apparatus for converting the color dots shown in FIG. In FIG. 4, the analog audio signal input from the analog audio signal input circuit 13 is digitized by the AD conversion circuit 15. The signal digitized by the AD conversion circuit 15 is converted by the color dot conversion circuit 16 into a color dot signal corresponding to a (1 + n) -adic number, where n is the number of dot color types.

The signal converted by the color dot conversion circuit 16 is supplied to the printing circuit 17. The printing circuit 17 converts the supplied color dot signal into a signal suitable for printing, adds a dot signal for tracking adjustment, and supplies the dot signal to the printing mechanism section 18. The printing mechanism unit 18 sequentially arranges and prints color dots on a recording medium according to a signal supplied from the printing circuit 17.

The digital audio signal input from the digital audio signal input circuit 14 is supplied to the color dot conversion circuit 16. Then, as described above, when the number of color types of dots is n, it is converted into a color dot signal corresponding to an (n + 1) -ary number, and the color dots are sequentially printed on the recording medium by the printing circuit 17 and the printing mechanism unit 18. Arranged and printed.

FIG. 5 is an external view of an audio signal recording apparatus having the configuration shown in FIG. In FIG. 5, 1 is an IC card (digital audio signal) insertion port, 2 is a magnetic tape (analog audio signal) insertion port, and 3 is a microphone.
Reference numeral 4 denotes an input selector switch, which switches the input from the IC card, the magnetic tape, and the microphone. Reference numerals 5, 6, and 7 are operation switches for recording, reproducing, stopping, skipping forward and backward, etc. for each input source. Reference numeral 8 denotes a speaker, and the user can hear the reproduced sound of each input source through the speaker 8.

Reference numeral 9 is a print paper compartment, and 10 is a switch for issuing operation commands such as paper selection, paper feed, and paper cutting.

Reference numeral 11 is a recording time setting switch, and the user determines the time for performing the audio → color dot signal conversion with this switch 11. Reference numeral 12 denotes a print switch. When the print switch 12 is pressed, the audio information for the time defined by the recording time setting switch 11 is read from the input source selected by the input selector switch 4,
It is printed after being converted to color dots.

In this audio recording apparatus, the ADPCM method is used for digitizing the analog signal, the sampling frequency is 16 kHz, and the 4-bit quantization is performed. The inks, print papers, and printing conditions used in this example are shown below.

The ink colors used for the audio signal dots are cyan, magenta, and yellow. Also,
The color of the ink used for the tracking adjustment dots is black, and the print paper uses a special paper tape with a width of 1.2 cm and an adhesive on the back surface. The width of the audio signal track is 1 cm, and the diameter of the color dot is about 50μ.
m, and the dot pitch is about 55 μm.

FIG. 6 shows the length (cm) of the audio track and the recording time (sec) in the example shown in FIGS. 4 and 5.
It is a graph which shows the relationship with the length of. As shown in FIG. 6, the length of the recording time is proportional to the length of the audio track. For example, when the length of the audio track is 5 cm, the audio for 5 seconds is used, and when it is 10 cm, the audio for 10 seconds is used. Can be recorded.

FIG. 7 is a diagram showing an example in which a photographic print 42 and an audio track 43 printed using the audio signal recording device of the examples shown in FIGS. 4 and 5 are attached to a mount 41. In the example shown in FIG. 7, an audio track 43 having a width of 1 cm and a length of 10 cm, in which audio for 10 seconds is recorded, is attached to a blank portion below the photographic print 42.

As described above, according to the audio signal recording apparatus of the first embodiment of the present invention, dots of four colors (colorless is also one color) of analog signals or data signals, that is, colorless, cyan, and Since it is represented by magenta and yellow dots, it is possible to realize an optical information recording device capable of printing a large amount of information without increasing the printing area.

In the above example, cyan, magenta, and yellow are used as the colors to be used, but the colors are not limited to these, and other types of colors can be used. With the above three colors (cyan, magenta, and yellow), when using a normal color printer, these three colors are the basic colors, so that operation control for expressing other colors is not necessary. Become.

The audio track printed by using the audio signal recording apparatus of the above-mentioned example can be used by pasting it on a printed matter or the like. Further, in the above-mentioned example, the color dots are created by using three kinds of colors, but the sound signal is converted into the color dot signal by using two kinds of colors except colorless and four or more kinds of colors. Then, it may be recorded on the recording medium. In this case, assuming that the number of kinds of colors is n (where n is a natural number of 2 or more), the digital signal is converted into a (1 + n) -adic signal and replaced with dots of each color including colorless in each signal. .

Further, the circuit configuration shown in FIG. 4 is replaced by a word processor, a personal computer, a facsimile,
It goes without saying that it can be incorporated in an information device having a printing mechanism such as a video printer.

(Second Embodiment) FIG. 8 is an external view of an audio signal recording apparatus according to the second embodiment of the present invention. In FIG. 8, 31 is a keyboard for inputting information such as graphs, diagrams, tables and characters, 32 is a scanner (optical scanner) capable of reading information such as photographs and pictures from the outside, 33 is a monitor screen ( A display screen) and 34 are color printers.

35 is an analog audio signal input terminal,
Reference numeral 36 is a magnetic disk insertion port.

FIG. 9 is an internal block diagram of the audio signal recording device shown in FIG. In FIG. 9, input signals from the keyboard 31 and the scanner 32 are supplied to the control unit 30. An input signal from the magnetic disk inserted into the magnetic disk insertion slot 36 is supplied to the audio information discriminating section 39 via the A / D conversion circuit 37. Then, when the voice information discriminating unit 39 determines that the input information from the magnetic disk is voice information, it supplies this voice information to the color dot conversion circuit 40. In addition, the voice information discrimination unit 39
When it judges that the input information from the magnetic disk is information other than the audio information, the information is supplied to the control unit 30.

The color dot conversion circuit 40 converts the audio information supplied from the audio information discriminating section 39 into a color dot signal by the conversion method as shown in FIG. 2, and the converted color dot signal is controlled by the control section 30. Supply to. In other words, "00" is converted into a color dot signal in which "01" is a cyan dot, "10" is a magenta dot, and "11" is a yellow dot.

Further, the audio signal from the audio input terminal 35 is passed through the A / D conversion circuit 8 and the color dot conversion circuit 4
0 is supplied. And this color dot conversion circuit 4
When it is 0, it is converted into a color dot signal, and the converted signal is supplied to the control unit 30.

Then, the control unit 30 includes a keyboard 31,
Based on the input signals from the scanner 32, the magnetic disk, and the voice input terminal 35, the monitor screen 33 is caused to display images, characters, etc., and the printer 34 is also caused to print images, characters, etc.

By operating the keyboard 31 while looking at the monitor screen 33, the user can arrange color dots at arbitrary positions. In this audio signal recording device, a picture, a character, and the like and audio signal color dots can be simultaneously printed by the printer 34 with the arrangement determined on the monitor screen 33.

FIG. 10 shows an example in which pictures, characters 45 and voice signal color dots 46 are printed on the paper 44 by using the voice signal recording device shown in FIGS. 8 and 9. here,
A voice color dot 46 is added to the bottom of the picture / character 45.

As described above, according to the audio signal recording apparatus of the second embodiment of the present invention, in addition to the information such as pictures and characters, a large amount of information of the audio signal by color dots is the same. It can be recorded on paper at the same time. In addition, in the example shown in FIGS. 8 and 9, the keyboard, the monitor, the printer, and the like are integrated, but they may be configured separately.

FIG. 11 is a block diagram of a reproducing means when an audio reproducing function is added to the audio signal recording apparatus according to the second embodiment of the present invention. That is, it is a block diagram of a voice signal reproducing means for reading voice information represented by the color dots shown in FIG. 1 and converting the voice information into digital data, and generating a voice by a speaker. In FIG. 11, the optical reader 80 reads color dot signals as shown in FIG. Then, the read color dot signal is supplied to the color dot / digital signal converter 81.

The color dot / digital signal converter 81 converts the color dot signal into a digital signal. That is, for example, if a digital signal is converted into a color dot signal and recorded on the paper by the method shown in FIG. 2, colorless dots are set to “00”, cyan dots are set to “01”, and magenta. Dot of "10"
Then, the yellow dots are converted into “11”.

Color dot / digital signal converter 81
The digital signal converted by the D / A converter 82
To be converted into an analog signal. The analog signal is supplied to the drive circuit, converted into an audio signal, amplified to a level sufficient to drive the speaker 84, and supplied to the speaker 84. The audio signal reproducing means of the example of FIG. 11 can reproduce the audio information recorded by the audio signal recording device shown in FIGS. 5 and 8.

The audio signal recording method can also be applied to a camera for taking an optical image. In other words, the camera is provided with a microphone for capturing sound, a unit for converting the captured sound into a digital signal and converting it into the color dot signal described above, and a unit for recording the converted color dot signal on photographic film. You can also do it.

Further, the above-mentioned example is an example in which the present invention is applied to the recording method and apparatus of the audio signal, but the present invention can be applied not only to the audio signal but also to the recording of other signals. Is also possible.

[0070]

Since the present invention is constructed as described above, the following effects can be obtained. In the information recording method,
If the natural number of 2 or more is n, the digital signal is (1+
n) is converted into a base number, this (1 + n) base number is converted into (1 + n) types of colors including colorlessness, and a plurality of color dots respectively indicating these colors are made to correspond to digital signals,
Since it is arranged to print sequentially on the recording medium,
An information recording method capable of recording information at high density can be realized.

If the information recording method of the present invention is applied to a voice information recording apparatus, it becomes possible to easily add voice information to a photograph, a printed matter or the like with high density. further,
In the information recording method of the present invention, the printing apparatus used for data output or copying of a personal computer or the like for dot formation uses paper, film or the like as the recording medium, and therefore is easy to handle.

In the information recording apparatus, the audio signal input means, the A / D conversion means for converting the input audio signal into a digital signal, and the converted digital signal are
Assuming that a natural number of 2 or more is n, color dot conversion means for converting into a (1 + n) base number and converting into color dot signals of (1 + n) kinds of colors including colorlessness, and color dots into digital signals according to the color dot signals. Correspondingly, since it is configured to include a printing unit that sequentially arranges and prints on a recording medium, it is possible to realize an information recording apparatus capable of recording information at high density.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of printing color dot signals according to a first embodiment of an information recording method of the present invention.

FIG. 2 is an explanatory diagram of a first embodiment of the information recording method of the present invention.

FIG. 3 is a diagram showing the relationship between the number of color types and sizes of color dots and recording density.

FIG. 4 is a schematic configuration diagram of a first embodiment of the information recording apparatus of the present invention.

FIG. 5 is an external view of a first embodiment of the information recording apparatus of the present invention.

FIG. 6 is a graph showing the relationship between the length of the audio track and the recording time in the first embodiment of the information recording apparatus of the present invention.

7 is a diagram showing an example in which an audio track printed using the example of FIG. 5 is attached to a photograph.

FIG. 8 is an external view of an information recording apparatus that is a second embodiment of the present invention.

FIG. 9 is an internal block diagram of an information recording apparatus that is a second embodiment of the present invention.

FIG. 10 is a diagram showing an example of printing using the information recording apparatus according to the second embodiment of the present invention.

FIG. 11 is a schematic block diagram of an audio signal reproducing means when an audio signal reproducing function is added to the information recording apparatus which is the second embodiment of the present invention.

FIG. 12 is an explanatory diagram of a configuration of a conventional example.

FIG. 13 is an explanatory diagram of a configuration of a conventional example.

FIG. 14 is a graph showing the relationship between dot size and data recording density.

[Explanation of symbols]

1 IC card insertion slot 2 Magnetic tape insertion slot 3 Microphone 4 Input selector switch 5, 6, 7 Operation switch 8 Speaker 9 Print paper tray 10 Selection switch 11 Recording time setting switch 12 Print switch 13 Analog signal input circuit 14 Digital signal input circuit 15 A / D conversion circuit 16 Color dot conversion circuit 17 Printing circuit 18 Printing mechanism section 21, 22, 23 Color dot 24 Tracking adjustment dot 30 Control section 31 Keyboard 32 Scanner 33 Monitor screen 34 Printer 35 Voice input terminal 36 Magnetic disk insertion Mouth 37, 38 A / D converter 39 Audio information discrimination circuit 40 Color dot conversion circuit 80 Optical reader 81 Color dot / digital signal converter 82 D / A converter 83 Drive circuit 84 Speed

Claims (13)

[Claims] 1. A digital signal is represented by a natural number of 2 or more and n.
Then, it is converted into a (1 + n) base number, this (1 + n) base number is converted into (1 + n) kinds of colors including colorlessness, and a plurality of color dots respectively indicating these colors are made to correspond to the digital signal, An information recording method, which comprises sequentially arranging and printing on a recording medium. 2. The information recording method according to claim 1, wherein
The shape of the color dots is 10 μm to 200 μm in diameter.
An information recording method characterized in that the information recording method is substantially circular. 3. The information recording method according to claim 2, wherein
An information recording method, wherein d ≦ p, where p is a printing pitch of the color dots and d is a diameter of the color dots. 4. The information recording method according to claim 1, 2 or 3, wherein n is 3 and the (1 + n) kinds of colors are four colors of colorless, cyan, magenta and yellow. And information recording method. 5. The information recording method according to claim 1, 2, 3 or 4, wherein the color dots are arranged in rows and columns on a recording medium and printed, and dots for tracking adjustment are provided at least on both outer sides of each row. A method for recording information, which comprises printing. 6. The information recording method according to claim 5,
The information recording method, wherein the tracking adjustment dots are black dots. 7. The information recording method according to claim 1, 2, 3, 4, 5 or 6, wherein the digital signal is a voice information signal. 8. The information recording method according to claim 7,
An information recording method, characterized in that the recording medium having the color dots printed thereon is attached to at least a part of an object. 9. The information recording method according to claim 8,
The above-mentioned object is a photo print, which is an information recording method. 10. The information recording method according to claim 7, wherein a graphic is printed on a recording medium, and the color dots are printed on at least a part of the recording medium. 11. An audio signal input means, an A / D conversion means for converting an audio signal input from the audio signal input means into a digital signal, and at least a digital signal converted by the A / D conversion means. If n is a natural number of 2 or more, (1+
n) a color dot conversion means for converting into a base number and converting the (1 + n) base number into color dot signals of (1 + n) types of colors including colorlessness, and these colors are converted in accordance with the color dot signals from the color dot conversion means. Show multiple color dots,
An information recording apparatus, comprising: a printing unit that sequentially prints on a recording medium in correspondence with the digital signal and prints. 12. The information recording apparatus according to claim 11, further comprising graphic information input means and digital audio signal input means, wherein the color dot conversion means receives the digital signal from the digital audio signal input means. (1
+ N) base number, and this (1 + n) base number is converted into color dot signals of (1 + n) kinds of colors including colorlessness, and the printing means respectively changes these colors in accordance with the color dot signals from the color dot conversion means. Information in which a plurality of color dots shown are sequentially arranged and printed on a recording medium in correspondence with the digital signal, and the figure input from the figure information input means is printed on the recording medium. Recording device. 13. The information recording apparatus according to claim 11 or 12, wherein a color dot signal reading means for reading the color dot signals printed on a recording medium, and a color dot signal read by the color dot signal reading means. Further includes color dot / digital signal converting means for converting the digital signal into a digital signal, and means for converting the digital signal converted by the digital signal converting means into a voice signal and generating a voice according to the converted voice signal. An information recording device characterized by the above.