Abstract: An all-solid-state battery has a positive electrode layer, a separator layer and a negative electrode layer. The all-solid-state battery satisfies relationships of “Formula (1): 0.99?Sa0/Sc0?1.01,” “Formula (2): 1.00?Sa1/Sa0?1.13,” and “Formula (3): 0.93?Sc1/Sc0?1.02.” Sc0 indicates an area of the positive electrode layer when the SOC is 0%. Sc1 indicates an area of the positive electrode layer when the SOC is 100%. Sa0 indicates an area of the negative electrode layer when the SOC is 0%. Sa1 indicates an area of the negative electrode layer when the SOC is 100%.

Abstract: A method for manufacturing a battery includes: a first cutting step of cutting a laminate at a first cutting position to form a first cut surface, the laminate including at least one battery cell having a positive electrode layer, a negative electrode layer, and a solid electrolyte layer located between the positive electrode layer and the negative electrode layer; and a second cutting step of cutting the laminate cut in the first cutting step at a second cutting position inside the first cutting position to form a second cut surface. In the second cutting step, Rz1<W <5Rz1 is satisfied, where W denotes a distance between the first cut surface and the second cut surface to be formed and Rz1 denotes a surface roughness of the first cut surface.

Abstract: A battery includes: a power generation element having a structure in which battery cells are laminated, each of the battery cells including an electrode layer, a counter electrode layer, and a solid electrolyte layer located between the electrode layer and the counter electrode layer. The power generation element includes a first pair of side surfaces facing each other, and a second pair of side surfaces facing each other and different from the first pair of side surfaces. At least one of the battery cells is provided with a recess where the solid electrolyte layer is receded with respect to the electrode layer and the counter electrode layer on each of the first pair of side surfaces. Surface roughness Rz2 of each of the second pair of side surfaces is smaller than surface roughness Rz1 of each of the first pair of side surfaces.

Abstract: A battery includes: a power generation element including battery cells each of which includes an electrode layer, a counter-electrode layer, and a solid electrolyte layer located between the electrode layer and the counter-electrode layer, and which are electrically connected in parallel and stacked; an insulating member covering an electrode layer at a side surface of the power generation element; and a terminal electrode covering the side surface and the insulating member, and electrically connected to a counter-electrode layer, in which the power generation element includes: a first parallel unit that includes first battery cells and has both ends in a stacking direction at each of which a counter-electrode layer is located; and a second parallel unit that includes second battery cells, has both ends in the stacking direction at each of which an electrode layers is located, and is stacked on the first parallel unit.

Abstract: A battery includes battery cells. A battery cell includes a positive electrode active material layer, a negative electrode active material layer, and a solid electrolyte layer disposed between the positive electrode active material layer and the negative electrode active material layer. On a side surface of the battery cell, in a plan view of the side surface of the battery cell, striated cut marks which are inclined with respect to the thickness direction of the battery cell are provided.

Abstract: A content reproduction system includes an information processing terminal (102) and a secure device (103). The information processing terminal (102) receives a copyright protection application program (315) from an application distribution server (113). The copyright protection application program includes a first program having a first execution format executable in the information processing terminal (102) and a second program having a second execution format different from the first execution format and executable in the secure device (103). The second program is encrypted with a program key (515) held in the secure device (103). By extracting and executing the first program, the information processing terminal (102) extracts the second program and transmits the second program to the secure device (103).

Abstract: A content reproduction system includes an information processing terminal (102) and a secure device (103). The information processing terminal (102) receives a copyright protection application program (315) from an application distribution server (113). The copyright protection application program includes a first program having a first execution format executable in the information processing terminal (102) and a second program having a second execution format different from the first execution format and executable in the secure device (103). The second program is encrypted with a program key (515) held in the secure device (103). By extracting and executing the first program, the information processing terminal (102) extracts the second program and transmits the second program to the secure device (103).

Abstract: A content reproduction system includes an information processing terminal and a secure device. The information processing terminal receives a copyright protection application program from an application distribution server. The copyright protection application program includes a first program having a first execution format executable in the information processing terminal and a second program having a second execution format different from the first execution format and executable in the secure device. The second program is encrypted with a program key held in the secure device. By extracting and executing the first program, the information processing terminal extracts the second program and transmits the second program to the secure device. The secure device receives the second program from the information processing terminal, decrypts the second program using a program key stored in a key storing unit, and executes the second program.

Abstract: A content reproduction system includes an information processing terminal and a secure device. The information processing terminal receives a copyright protection application program from an application distribution server. The copyright protection application program includes a first program having a first execution format executable in the information processing terminal and a second program having a second execution format different from the first execution format and executable in the secure device. The second program is encrypted with a program key held in the secure device. By extracting and executing the first program, the information processing terminal extracts the second program and transmits the second program to the secure device. The secure device receives the second program from the information processing terminal, decrypts the second program using a program key stored in a key storing unit, and executes the second program.

Abstract: A content reproduction apparatus (1) which reproduces digital contents, and includes a device key storage unit (110) holding a device key (110a) specific to the content reproduction apparatus (1) in a manner that does not allow access from outside the content reproduction apparatus (1). The content reproduction apparatus (1), also includes a device ID storage unit (19) holding device key index information (19a) that is in a one-to-one association with a device key (110a), an instruction code receiving unit (14a) receiving an instruction code to output index information, a device key index information obtainment processing unit (10a) outputting, to outside, the device key index information (19a) stored in the device ID storage unit (19) based on the instruction, and a device key index information output processing unit (11a).

Abstract: Versatility of a memory card is improved by providing a memory card where data protection mode and normal mode can be selected at discretion. A portable auxiliary storage device includes a mode setting section, a mode detecting section and a memory access control section. The mode setting section allows a user to set a normal mode permitting reading data stored in a memory section or writing the data to the memory section without restriction and a data protection mode for restricting the reading or writing. The mode detecting section detects a mode set in the mode setting section. The memory access control section controls the read or write according to a state of the mode setting section detected by the mode detecting section.

Abstract: Versatility of a memory card is improved by providing a memory card wherein data protection mode and normal mode can be selected at discretion.

Abstract: A content reproduction apparatus (1) which reproduces digital contents, including a device key storage unit (110) which holds a device key (110a) specific to the content reproduction apparatus (1) in a manner which does not allow access from outside the content reproduction apparatus (1), a device ID storage unit (19) which holds device key index information (19a) which is in a one-to-one association with a device key (110a), an instruction code receiving unit (14a) which receives an instruction code to output index information, a device key index information obtainment processing unit (10a) which outputs, to outside, the device key index information (19a) stored in the device ID storage unit (19) based on the instruction, and the device key index information output processing unit (11a).

Abstract: An optical disk is provided for recording data of a signal modulated according to a predetermined modulation method in a form of concavo-convex pits. The optical disk includes a first area having a reflecting film partly removed, and a second area for recording pits which are different from pits satisfying requirements of the predetermined modulation method. The first area having the reflecting film partly removed includes a portion which is formed by removing the reflecting film, and has a length longer than a maximum pit length determined by the modulation method in a circumferential direction of the optical disk. When the pits recorded on the optical disk are physically copied as they are, physical copying of the optical disk can be prevented by utilizing such a difference that the authorized optical disk differs from a pirated copy in a combination of the respective reproduced signals of the first and second areas.

Abstract: An optical disc includes a processed area that has been processed by the irradiation of a YAG laser. Concave pits and convex pits having a length 3T–14T (T=0.133 ?m) are formed in an area of the optical disc other than the processed area. The processed area includes (1) a concave pit having a length X or (2) a pit string that has a length X and includes a convex pit from which a reflection layer has been removed. A specific area of the optical disc records physical character information that shows the location and length of the concave pit or the pit string in the processed area.

Abstract: An optical disc includes a processed area that has been processed by the irradiation of a YAG laser. Concave pits and convex pits having a length 3T–14T (T=0.133 ?m) are formed in an area of the optical disc other than the processed area. The processed area includes (1) a concave pit having a length X or (2) a pit string that has a length X and includes a convex pit from which a reflection layer has been removed. A specific area of the optical disc records physical character information that shows the location and length of the concave pit or the pit string in the processed area.

Abstract: An optical disk is provided for recording data of a signal modulated according to a predetermined modulation method in a form of concavo-convex pits. The optical disk includes a first area having a reflecting film partly removed, and a second area for recording pits which are different from pits satisfying requirements of the predetermined modulation method. The first area having the reflecting film partly removed includes a portion which is formed by removing the reflecting film, and has a length longer than a maximum pit length determined by the modulation method in a circumferential direction of the optical disk. When the pits recorded on the optical disk are physically copied as they are, physical copying of the optical disk can be prevented by utilizing such a difference that optical disk differs from a pirated copy in a combination of the respective reproduced signals of the first and second areas.

Abstract: A method for making reduced iron using blast-furnace sludge is provided. The method includes a mixing step of mixing the blast-furnace sludge and an iron-oxide-containing powder to prepare a mixed material, an agglomerating step of agglomerating the mixed material to form agglomerates, a feeding step of feeding the agglomerates onto a continuously moving hearth, and a reducing step of heating the agglomerates to remove zinc and reduce the agglomerates.

Abstract: An optical disc includes a processed area that has been processed by the irradiation of a YAG laser. Concave pits and convex pits having a length 3T-14T (T=0.133 ?m) are formed in an area of the optical disc other than the processed area. The processed area includes (1) a concave pit having a length X or (2) a pit string that has a length X and includes a convex pit from which a reflection layer has been removed. A specific area of the optical disc records physical character information that shows the location and length of the concave pit or the pit string in the processed area.

Abstract: An optical disk is provided for recording data of a signal modulated according to a predetermined modulation method in a form of concavo-convex pits. The optical disk includes a first area having a reflecting film partly removed, and a second area for recording pits which are different from pits satisfying requirements of the predetermined modulation method. The first area having the reflecting film partly removed includes a portion which is formed by removing the reflecting film, and has a length longer than a maximum pit length determined by the modulation method in a circumferential direction of the optical disk. When the pits recorded on the optical disk are physically copied as they are, physical copying of the optical disk can be prevented by utilizing such a difference that the authorized optical disk differs from a pirated copy in a combination of the respective reproduced signals of the first and second areas.