TWI482096B - Method and device for optical information recording, recording medium so recorded and device to read such recorded information - Google Patents

Description

Optical information recording method, optical information recording device, optical information record carrier and reading device thereof

The present invention relates to an optical information recording method, an optical information recording device, an optical information record carrier and a reading device thereof, and more particularly to a method and apparatus for recording data on an optical information record carrier, recorded by the method and/or device An optical information record carrier, and means for reading data recorded by the optical record carrier.

At present, in the field of optical information recording, the system widely used in the industrial and commercial industry is mainly a bar code system. The system is a combination of wired numbers of different wide and narrow barcodes to represent a piece of information, mainly numerical numbers. The barcode can be optically read and decoded by the computer to obtain the information represented by the barcode.

However, the bar code system, while convenient, can only be used to represent what is defined by international norms. When the computer optical reading device is used to read the width combination of the barcode, the correct position determination must be achieved. It is necessary to maintain a certain width between the information words in the barcode, so that the amount of information that can be recorded in the unit space cannot be improved. And for the correct judgment, the printing quality of the bar code has strict requirements. Increase the cost of bar code applications.

It is an object of the present invention to provide an optical information recording method and apparatus that can be used to record a variety of information content to expand an optically identifiable information recording application.

SUMMARY OF THE INVENTION An object of the present invention is to provide an optical information recording method and apparatus capable of correctly identifying recorded information content and improving recording intensity to improve the amount of unit information recorded.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an optical information recording method and apparatus which can reduce the quality of recorded information and still record information correctly, thereby reducing the cost of optical information recording.

It is also an object of the present invention to provide an optical information record carrier for recording information in the above described method and apparatus, and to read information from the optical information record carrier.

The optical information recording method according to the present invention is for forming an optically recognizable symbol on an optical record carrier, comprising the steps of: converting a piece of data to be recorded into a series of binarization codes of a predetermined length according to an encoding rule; controlling a symbol; a generating device, forming a string binarized data symbol representing one of the binarization codes on a record carrier, and forming a quantity on a side of the string data symbol along a direction of the string data symbol direction corresponding to the number of the string data symbols, representative One of the string data symbol positions is a binarized position symbol; wherein the binarized data symbol has the same format as the binarized position symbol.

An optical information recording apparatus according to the present invention is for forming an optically recognizable symbol on an optical record carrier, comprising: an encoding device for converting a piece of data to be recorded into a series of binarized codes of a predetermined length according to an encoding rule a symbol generating means for forming a symbol on a record carrier; a control means for controlling the symbol generating means to form a string binarized data symbol representing the binarized code on the record carrier, and The side edge of the string data symbol forms a number corresponding to the number of data symbols in the direction of the string data symbol, and represents a string binarization position symbol of the string data symbol position; wherein the binarized data symbol and the binarization The location symbols have the same format.

An optical information record carrier according to the present invention is a carrier on which an optically identifiable symbol is recorded, the symbol comprising: a string of binarized data symbols representing a string of binarized codes; and a side of the string of data symbols Forming along the direction of the data symbol, the number corresponding to the number of data symbols of the string, representing a string of binarized position symbols of the string data symbol position; wherein the binarized data symbol has the same sign as the binarized position symbol format.

An optical information reading device according to the present invention is for reading an optically identifiable symbol recorded on an optical record carrier, comprising: a symbol reading device for reading a record recorded on the record carrier String binarized data symbols, and recorded on the side of the string of data symbols, along the direction of the string of data symbols, the number and the string Corresponding to the number of data symbols, representing a string of binarized position symbols of the string data symbol position; a decoding device converts the string data symbols into a piece of data according to the encoding rule and refers to the position symbol; wherein the binarization The data symbol has the same format as the binarized position symbol.

In a preferred embodiment of the present invention, the format of the binarized data symbol and the binarized position symbol is: the symbol includes a first symbol representing a first optically identifiable characteristic and a second optically identifiable characteristic. The second symbol. The string binarized position symbol may include a string of symbols formed by interspersing the first symbol and the second symbol. In most instances, the first symbol and the second symbol exhibit different absorption rates for light of a particular wavelength. The different absorption rates can be expressed in color differences or in different surface structures. In other examples, the first symbol is one of full black and all white, and the second symbol is the other of all black and all white.

In a preferred embodiment of the invention, the binarized data symbols and the binarized position symbol are formed on a planar substrate. In other examples, the binarized data symbols and the binarized position symbol are formed in different height or depth patterns.

The optical information recording device and the optical information reading device may further comprise a record carrier carrying platform to facilitate information recording and reading.

11-17‧‧‧First District Data Bits

21-27‧‧‧Information elements in the second district

100‧‧‧ Optical information recording and reading device

110‧‧‧ coding device

120‧‧‧ symbol generating device

130‧‧‧Control device

140‧‧‧ symbol reading device

150‧‧‧Decoding device

160‧‧‧ memory device

170‧‧‧ Record carrier carrying platform

200‧‧‧ record carrier

Figure 1 shows an example of an information symbol graphic suitable for use in the present invention. Figures 1A, 1B, and 1C show the data bits in the partition.

Fig. 2 is a system diagram showing an optical information recording and reading apparatus of the present invention.

Figure 3 is a flow chart showing the optical information recording method of the present invention.

Hereinafter, an optical information recording method, an optical information recording apparatus, an optical information recording medium, and a reading apparatus thereof according to the present invention will be described by way of examples. It is to be understood that the examples are not intended to limit the scope of the invention. Those who are familiar with the art in this industry are not difficult to make different changes and derivatives after reading this patent specification, and get the same or similar results. Instead, it should be included in the scope of the patent of the present invention.

Fig. 1 is a view showing an example of an information symbol pattern which can be recorded by the optical information recording method of the present invention and recorded by the optical information recording medium of the present invention and which can be read by the reading device. As shown, the recorded information is represented graphically and optically identifiable. In application, the information graphic can be formed on any optically readable record carrier. The figure also shows that the graph only includes two graphical components, logical value 0 and logical value 1, which are binarized information graphics. Each graphic component can be regarded as a binarized information bit (bit). Therefore, each data in the figure contains two sets of 7-bit data areas 10 and 20. However, it should be understood that the number of bits that can be used in each data area of each data in the present invention is not limited to seven. Data units larger or smaller than 7 bits can be used in the present invention. In the example of the present invention, the first data area 10 contains the same number of bits as the second data area 20. The bits 11-17 included in the first data area 10 and the corresponding bits 21-27 included in the second data area 20 are adjacent to each other. Of course, the effects of the present invention can be achieved by applying two corresponding bits 11 and 21, 12 and 22, ... 17 and 27 in close proximity. The distance between the two is not a technical limitation. The bits 11-17 and 21-27 of each zone are also independent or relatively close to each other, and the distance therebetween is not any technical limitation. However, the distance or positional relationship between the corresponding bits 11 and 21, 12 and 22, ... 17 and 27 and the same location elements 11-17 and 21-27 should not impair the positional relationship between them when recognized by computer optical methods. Correctness is not to be said.

It is also shown in Fig. 1 that the data bits 11-17 of the first region mainly represent a certain value in a binary manner. For example, Figure 1A shows that data bits 11-17 of the first region are used to represent a binary value of 1, and Figure 1B shows that data bits 11-17 of the first region are used to represent a decimal value of 10, Figure 1C shows that the data bits 11-17 of the first zone are used to represent the binary value of 11, and so on. Fig. 1 shows only six of these values. In the application, the data pattern of the third area may be additionally provided, and the human representative symbol is used to describe the information represented by the data pattern. The pattern can also be a pattern that can be optically recognized by a computer. Figure 1 shows the binary values of each piece of data in Arabic numerals. But other means of expression, such as text, other graphics, for human identification, can not help but. Although the information pattern of the area is intended for human identification, it can also be used for computer identification. As for the meaning represented by the binary value, it can be interpreted by the decoding apparatus of the present invention according to a certain encoding rule. Similarly, the generation of the binary value is also performed by the encoding apparatus of the present invention in accordance with the encoding rule.

The data bits 21-27 of the second zone are mainly represented by binarization. The position, that is, the relative position of its corresponding first zone data bits 11-17. In the example of FIG. 1, the data bits 21-27 of the second region are fixed units of 1-bit units, and the fixed logical values are changed to represent the corresponding first-region data bits 11-17. relative position. However, it is also feasible to use a fixed change between complementary logic values and to modulate it in other ways.

When reading, according to the number of the first area data bits, the data bit of the area can represent a considerable amount of data values. And the location information provided by the second area data bit is used to correctly determine the number of data bits in the first area and the value of each data bit. In other words, after reading any data pattern by the computer optical reading device, the number of the first area data bits and the value of each data bit can be correctly determined according to the logical value of the second area data bit. It is not because the first data element has the same logical value of the same data bit, but the number of data bits and the value of each data bit are misjudged.

It can also be seen from the example shown in Fig. 1 that the first region data bits 11-17 constitute a binarized data symbol, and the data bits 21-27 of the second region constitute a binarized position symbol. . The data symbol format of both includes a first symbol representing the first logical value, that is, a first symbol showing the first optically identifiable characteristic, and a second symbol representing the second logical value, that is, displaying the second optically identifiable characteristic. The data bits 21-27 of the second area include a string of symbols formed by interspersing the first symbol and the second symbol to provide location information. In the example of FIG. 1, the first symbol and the second symbol are all black and all white bit patterns, respectively, and the two are interchangeable. However, in practical applications, the first symbol and the second symbol can be implemented on surfaces exhibiting different absorption rates for specific wavelengths of light. For example, it can be expressed as a color difference or as a different surface structure.

Further, in the example of Fig. 1, the binarized data symbols and the binarized position symbol are formed on a planar substrate, and the symbols also form a substantially planar surface. For example, it can be formed on a record carrier by a printing method such as inkjet printing, laser printing, screen printing, gravure printing or the like. However, in other examples, the binarized data symbol and the binarized position symbol may be represented by different height or depth patterns, as long as they can be read by computer optics.

The present invention provides an optical information recording apparatus for forming optically recognizable symbols on an optical record carrier. The present invention also provides an optical information reading device for reading an optically identifiable symbol recorded on the optical record carrier. As known by the industry experts, the recording device and the reading device can be formed separately, or can form a group of optical information recording and reading devices. Set. Hereinafter, the optical information recording apparatus and the optical information reading apparatus of the present invention will be described by taking the optical information recording and reading apparatus as an example.

Fig. 2 is a system diagram showing an optical information recording and reading apparatus of the present invention. As shown in the figure, the optical information recording and reading apparatus 100 of the present invention comprises: an encoding apparatus 110, which converts a piece of data to be recorded into a series of binarization codes of a predetermined length according to a specific encoding rule; a symbol generating device 120, the symbol generating device 120 is coupled to the encoding device 110 to form a data symbol on a record carrier 200; a control device 130 is coupled to the symbol generating device 120 for controlling the symbol generating device 120 to A string binarized data symbol representing one of the binarization codes is formed on the record carrier 200, and the binarized data symbol includes a binarized data pattern formed by a plurality of bit units. The control device 130 can control the symbol generating device 120 to form a quantity corresponding to the number of the string data symbols in the direction of the string data symbol on the side of the string data symbol on the record carrier 200, and represent the data symbol position of the string. One string of binarized position symbols, the position symbol is also a binarized data pattern formed by a plurality of bit units; a symbol reading device 140, the symbol reading device 140 can optically read the record in the record a binarized data symbol on the carrier 200 and a binarized position symbol; a decoding device 150 coupled to the symbol reading device 140 to interpret the binarized data symbol according to the encoding rule and referring to the position symbol, And converting the data symbol into a piece of data; and a memory device 160 for storing the code rule data and the data to be recorded, the binarization code, and the inverse conversion data.

In the above elements, the encoding device 110 and the decoding device 150 may be any computing device for encoding and decoding the data to be recorded according to the encoding rule. The encoding device 110 and the decoding device 150 and the encoding rules can be in a computer program type, and are present in a computing device, such as a computer, to control the computing device to perform encoding and decoding. In addition, encoding and decoding are also possible using a hardware form, such as a microprocessor type codec, and the processing speed can be improved.

The type and type of the symbol generating device 120 can be visualized by the record carrier 200 Depending on the type. For example, the record carrier 200 is a planar record carrier, and the symbol generating device 120 can be any device that produces optically readable symbols on the planar record carrier. Suitable devices include the aforementioned laser printers, ink jet printers, screen printers, lithographic printers and the like. Further, a device which can generate a topographic symbol for a flat type record carrier, such as a laser burner, an etching machine, a developing device, or the like, can also be used. The latter device can also be applied to non-planar record carriers.

The control device 130 can be in a computer program format and stored in a computing device, such as a computer, to control the symbol generating device 120 to perform symbol recording. Of course, it is also possible to perform control by using a hard type device such as a microprocessor to increase the processing speed. As for the memory device 160, any commercially available memory element can be used. However, in general, the memory provided by the computer itself, which is present by the encoding device 110, the decoding device 150, and the control device 130, is sufficient.

The symbol reading device 140 is any type of computer optical reading device, such as an image sensor, an image scanner, a digital camera, and the like. In addition, the laser read/write head is also a suitable symbol reading device. Other known computer optical reading devices are applicable to the present invention.

The optical information recording and reading device 100 further includes a record carrier carrying platform 170 for carrying the record carrier 200 for facilitating generation and reading of recorded information. Such a record carrier carrying platform 170 can be designed and fabricated depending on the type, material and size of the record carrier 200.

The above components are all well-known components in the industry and are available in general or professional markets. Such industry experts can obtain the components and use them in combination by the description of the present invention. The details are not to be described here.

The record carrier 200 of the present invention is used for recording data bits and position bit symbols generated by the optical information recording method and the optical information recording device, and is read by the optical information reading device. As previously mentioned, the record carrier 200 can be any type or type of record carrier, such as a flat type record carrier, which records information in a flat or topographical form, or a non-planar type of record carrier. As for the material, it is not subject to any restrictions. Any medium that can firmly store symbols, such as paper, glass, metal, ceramic, plastic, rubber, resin, leather, fiber cloth, non-woven fabric, etc., can be applied.

According to the present invention, the record carrier 200 records an optically identifiable symbol, the symbol comprising: a string of binarized data symbols representing a string of binarization codes; The side of the string data symbol is formed along the direction of the data symbol, the number corresponding to the number of data symbols of the string, representing a string binarization position symbol of the string data symbol position; and the binarized data symbol and the binary value The location symbols have the same format.

A preferred example of the symbol has been described above with reference to FIG.

The optical information recording method of the present invention is for forming optically identifiable symbols on a record carrier having the format and characteristics as previously described. Figure 3 is a flow chart showing the optical information recording method of the present invention. As shown in the figure, in step 201, the encoding device 110 obtains a piece of information to be recorded, and the information to be recorded may be a number, a character or a symbol. In step 202, the encoding device 110 converts the pen-record data into a series of binarization codes of a predetermined length according to an encoding rule. The coding rules used at this time can be formulated according to the actual application needs, so as to use a limited combination of binarized codes to represent a certain meaning. Next, in step 203, the control device 130 controls the symbol generating device 120 to form a string binarized data symbol representing the binarization code on the record carrier 200. At the same time as the data symbol is generated, the symbol generating device 120 and the side of the string of data symbols, along the direction of the string of data symbols, form a number corresponding to the number of the string of data symbols, representing one of the string of data symbols. Value the position symbol. If necessary, the control device 130 controls the symbol reading device 140 to read the symbols already recorded on the record carrier 200 after the symbols are formed, and controls the decoding device 150 to perform reverse decoding according to the encoding rules. To verify that the information recorded is correct. This completes the optical information recording process. The recorded optically identifiable information, that is, the type and content as described above in accordance with FIG.

As to the method in which the optical information recording and reading apparatus 100 reads the recording information on the record carrier 200 and performs decoding, it has been known from the above description. The steps are not described here.

As described above, the optical information recording method and apparatus disclosed by the present invention can provide a solution that can correctly recognize recorded information content, and can improve recording density. In addition, even if the recorded record information quality is not high, the information can be correctly recorded and read, which can reduce the cost of optical information recording.

100‧‧‧ Optical information recording and reading device

110‧‧‧ coding device

120‧‧‧ symbol generating device

130‧‧‧Control device

140‧‧‧ symbol reading device

150‧‧‧Decoding device

160‧‧‧ memory device

170‧‧‧ Record carrier carrying platform

200‧‧‧ record carrier

Claims (30)

An optical information recording method for forming an optically recognizable symbol on an optical record carrier, comprising the steps of: converting a piece of data to be recorded into a series of binarized codes of predetermined length according to an encoding rule; controlling a symbol generating device Forming, on a record carrier, a string of binarized data symbols representing the binarization code, and forming a quantity along a direction of the string of data symbols on a side of the string of data symbols corresponding to the number of data symbols of the string, representing the string of data symbols One of the positions binarizes the position symbol; wherein the binarized data symbol and the binarized position symbol are formed in a format including a first symbol representing the display of the first optically identifiable characteristic and a second display a second symbol of the optically identifiable characteristic; and the string of binarized position symbols includes a string of symbols formed by interspersing the first symbol and the second symbol. The optical information recording method of claim 1, wherein the first symbol and the second symbol exhibit different absorption rates for light of a specific wavelength. The optical information recording method of claim 2, wherein the different absorption rates are represented by color differences. The optical information recording method of claim 2, wherein the different absorption rates are generated by different surface structures. The optical information recording method of claim 1, wherein the first symbol is one of all black and all white, and the second symbol is the other of all black and all white. The optical information recording method of claim 1, wherein the binarized data symbol and the binarized position symbol are formed on a planar substrate. The optical information recording method of claim 1, wherein the binarized data symbol and the binarized position symbol are formed into patterns of different heights or depths. An optical information recording device for forming optically recognizable symbols on an optical record carrier, comprising the following components: An encoding device converting a piece of data to be recorded into a series of binarization codes of a predetermined length according to an encoding rule; a symbol generating means for forming a symbol on a record carrier; and a control means for controlling the symbol generating means Forming, on the record carrier, a string binarized data symbol representing the binarization code, and forming a quantity along the side of the string data symbol along the side of the string data symbol corresponding to the number of the string data symbols, representing the string data symbol position a string binarization position symbol; wherein the binarized data symbol and the binarized position symbol are formed in a format including a first symbol representing a first optically identifiable characteristic and a second optical display A second symbol of the identifiable characteristic; and the string of binarized position symbols includes a string of symbols formed by interspersing the first symbol and the second symbol. The optical information recording device of claim 8, wherein the first symbol and the second symbol exhibit different absorption rates for light of a specific wavelength. The optical information recording apparatus of claim 9, wherein the different absorption rates are expressed by color differences. The optical information recording apparatus of claim 9, wherein the different absorption rates are generated by different surface structures. The optical information recording apparatus of claim 8, wherein the first symbol is one of all black and all white, and the second symbol is the other of all black and all white. The optical information recording apparatus of claim 8, wherein the binarized data symbol and the binarized position symbol are formed on a planar substrate. The optical information recording apparatus of claim 8, wherein the binarized data symbol and the binarized position symbol form a pattern of different heights or depths. An optical information recording device according to claim 8 of the patent application, further comprising a record carrier carrying platform. An optical information record carrier is a carrier that records optically recognizable symbols, and the symbols include: Representing a string of binarized codes for string binarization data symbols; and being located on the side of the string of data symbols, forming along the direction of the string of data symbols, the number corresponding to the number of data symbols of the string, representing the position of the string of data symbols a string of binarized position symbols; wherein the binarized data symbols and the binarized position symbols are formed in a format including a first symbol representing a first optically identifiable characteristic and a second optical display Identifying a second symbol of the characteristic; and the string binarized position symbol comprises a string of symbols formed by interspersing the first symbol and the second symbol. The optical information record carrier of claim 16, wherein the first symbol and the second symbol exhibit different absorption rates for light of a specific wavelength. The optical information record carrier of claim 17, wherein the different absorption rates are expressed by color differences. The optical information record carrier of claim 17, wherein the different absorption rates are generated by different surface structures. The optical information record carrier of claim 16, wherein the first symbol is one of all black and all white, and the second symbol is the other of all black and all white. The optical information record carrier of claim 16, wherein the binarized data symbol and the binarized position symbol are formed on a planar substrate. The optical information record carrier of claim 16, wherein the binarized data symbol and the binarized position symbol are formed in different height or depth patterns. An optical information reading device for reading an optically identifiable symbol recorded on an optical record carrier, comprising: a symbol reading device for reading a string of binarization recorded on the record carrier a data symbol, and recorded on a side of the data symbol, along the direction of the data symbol, the number corresponding to the number of data symbols of the string, representing a string of binarized position symbols of the string data symbol position; a decoding device, according to The encoding rule converts the string data symbol into a piece of data by referring to the position symbol; wherein the binarized data symbol and the binarized position symbol are formed in the following format: the symbol The number includes a first symbol representing a first optically identifiable characteristic and a second symbol displaying a second optically identifiable characteristic; and the string of binarized positional symbols includes an interpolated arrangement of the first symbol and the second symbol A string of symbols. The optical information reading device of claim 23, wherein the first symbol and the second symbol exhibit different absorption rates for light of a specific wavelength. The optical information reading device of claim 24, wherein the different absorption rates are represented by color differences. The optical information reading device of claim 24, wherein the different absorption rates are generated by different surface structures. The optical information reading device of claim 23, wherein the first symbol is one of all black and all white, and the second symbol is the other of all black and all white. The optical information reading device of claim 23, wherein the binarized data symbol and the binarized position symbol are formed on a planar substrate. The optical information reading device of claim 23, wherein the binarized data symbol and the binarized position symbol are formed in different height or depth patterns. An optical information reading device according to claim 23, further comprising a record carrier carrying platform.