Abstract: The invention is characterized in that a protection-encoding pattern is obtained based on an error correction codeword, that a protection-encoded code block is obtained by protection-encoding using the protection-encoding pattern a code block having a data codeword, and that the 2D barcode is generated based on the protection-encoded code block.

Abstract: A method for generating a two-dimensional barcode, including: obtaining a protection-encoding pattern based on a mask pattern reference, the mask pattern reference being a reference for identifying a mask pattern that is applied to a module group, the module group being composed of a plurality of modules, each module being a unit cell constituting the two-dimensional barcode; obtaining a protection-encoded code block by protection-encoding a code block with the protection-encoding pattern, the code block having at least a data codeword; generating the module group based on the protection-encoded code block; and generating the two-dimensional barcode having the module group to which the mask pattern is applied.

Abstract: A method for concealing hidden-object information using a first 2D barcode and a second 2D barcode, the first 2D barcode containing at least first closed information, the second 2D barcode containing at least second closed information, the method, including: generating the first 2D barcode, the first closed information of the first 2D barcode containing protection-encoding data ID, the protection-encoding data ID being for identifying protection-encoding data, the protection-encoding data being for protection-encoding the second 2D barcode; and generating a protection-encoded second 2D barcode by applying the protection-encoding data to at least a part of the second 2D barcode, the second closed information of the second 2D barcode containing the hidden-object information.

Abstract: A method for generating two-dimensional barcode, including: obtaining a data block including a first data codeword and an error correction codeword, the first data codeword having first information, the error correction codeword being capable of detecting and correcting an error of the first data codeword; and obtaining a replaced data block in which a part of the data block is replaced with a second data codeword, the second data codeword having second information; and generating a two-dimensional barcode based on the replaced data block. A method for reading a two-dimensional barcode including: reading a two-dimensional barcode; extracting a second data codeword from a predetermined position in a replaced data block; obtaining the second information from the extracted second data codeword; obtaining the first data codeword based on the replaced data block; and obtaining the first information from the obtained first data codeword.

Abstract: A method for generating a two-dimensional barcode, including: obtaining a protection-encoding pattern based on a mask pattern reference, the mask pattern reference being a reference for identifying a mask pattern that is applied to a module group, the module group being composed of a plurality of modules, each module being a unit cell constituting the two-dimensional barcode; obtaining a protection-encoded code block by protection-encoding a code block with the protection-encoding pattern, the code block having at least a data codeword; generating the module group based on the protection-encoded code block; and generating the two-dimensional barcode having the module group to which the mask pattern is applied.

Abstract: An information recording medium includes a substrate; a laser marking layer that has a reduced reflectance to light with a wavelength of 780 nm or more and that is discolored by irradiation with laser light, the laser marking layer being provided on the substrate; and a shielding layer that transmits infrared light, and that absorbs or reflects visible light, the shielding layer being provided on the laser marking layer.

Abstract: An information recording medium includes a substrate; a laser marking layer that has a reduced reflectance to light with a wavelength of 780 nm or more and that is discolored by irradiation with laser light, the laser marking layer being provided on the substrate; and a shielding layer that transmits infrared light, and that absorbs or reflects visible light, the shielding layer being provided on the laser marking layer.

Abstract: A method for concealing hiding-object information using a first 2D barcode and a second 2D barcode, the first 2D barcode containing at least first closed information, the second 2D barcode containing at least second closed information, the method, including: generating the first 2D barcode, the first closed information of the first 2D barcode containing protection-encoding data information, the protection-encoding data information being for identifying protection-encoding data, the protection-encoding data being for protection-encoding the second 2D barcode; and generating a protection-encoded second 2D barcode by applying the protection-encoding data to at least a part of the second 2D barcode, the second closed information of the second 2D barcode containing the hiding-object information.

Abstract: A method for generating two-dimensional barcode, including: obtaining a data block including a first data codeword and an error correction codeword, the first data codeword having first information, the error correction codeword being capable of detecting and correcting an error of the first data codeword; and obtaining a replaced data block in which a part of the data block is replaced with a second data codeword, the second data codeword having second information; and generating a two-dimensional barcode based on the replaced data block. A method for reading a two-dimensional barcode including: reading a two-dimensional barcode; extracting a second data codeword from a predetermined position in a replaced data block; obtaining the second information from the extracted second data codeword; obtaining the first data codeword based on the replaced data block; and obtaining the first information from the obtained first data codeword.

Abstract: An object of the present invention is to provide a method for producing a transfer body, which method neither causes adhesion failure at the interface between a transferring film and a substrate, nor causes interlayer peeling in the transferring film. Another object of the present invention is to provide a method for producing a transfer body with high productivity, which method neither causes breakage of a functional pattern forming a transferring layer during peeling of a release film from the transferring film, nor causes any damage to the substrate during separation of an attaching roller and a peeling roller from the substrate.

Abstract: A transfer film for firing which has a multilayer structure including a functional pattern and a pressure-sensitive adhesive layer. The multilayer structure is free from a shape failure of the functional pattern and a decrease in adhesive force of the adhesive layer, and has the excellent transferability to a substrate. The transfer film gives a fired functional pattern free from defects such as a shape or function failure. The transfer film for firing is one for use in forming a fired functional pattern by transferring a multilayer structure including a functional pattern to a surface of a substrate and firing it. The transfer film comprises a release film and a multilayer structure formed so as to be in contact with one of the surfaces of the release film. The multilayer structure includes a functional pattern and a contact layer which has been formed so as to be in direct contact with the surface of the functional pattern and is constituted of one layer or a larger number of layers.

Abstract: Transfer films for firing which have the excellent property of transferring a functional pattern and enable a pyrolysis gas generated by the firing of organic substances to be released smoothly, and which can form on a substrate a functional pattern free from defects such as a shape or function failure. One of the transfer films for firing comprises a release film and a multilayered structure formed so as to be in contact with one of the surfaces of the release film. The multilayered structure includes both a pressure-sensitive adhesive layer for bonding the transfer film for firing to a surface of a substrate and a functional pattern formed between the release film and the pressure-sensitive adhesive layer. The functional pattern comprises inorganic particles and a first organic substance removable by firing, and the pressure-sensitive adhesive layer comprises a second organic substance removable by firing and different from the first organic substance.