Abstract: A first cutter 130 (cutting unit) is provided between a color recording unit 120 (the first printing unit) and an overcoat recording unit 140 (the second printing unit). A portion whereon color printing is completed by the color recording unit 120 of a recording paper 200 (printing medium) is cut off by the first cutter 130 and detached. An overcoat recording unit 140 performs an overcoat process on the detached recording paper (printing medium strip). In parallel with this, the color recording unit 120 performs next color printing on the recording paper 200. This makes it possible to reduce a printing time in a printing device including a plurality of printing processes without deteriorating printing quality. Further, an useless paper feeding is eliminated by optimally arranging the color recording unit 120, the first cutter 130, the overcoat recording unit 140, and the second cutter 160, etc. in accordance with a size of a printing area.

Abstract: An authenticated device 200 includes a memory unit 220 to store at least one algorithm identifier and at least one encryption key identifier, a transmitting unit 212 to transmit at least one algorithm identifier and at least one encryption key identifier stored by the memory unit 220 to an authenticating device 100, a receiving unit 211 to receive a prescribed algorithm identifier and a prescribed encryption key identifier selected from among at least one algorithm identifier and at least one encryption key identifier transmitted by the transmitting unit 212 from the authenticating device 100, and an authentication processing unit 296 to perform an authentication process with the authenticating device 100 based on the prescribed algorithm identifier and the prescribed encryption key identifier received by the receiving unit 211.

Abstract: An information storage device which can record highly reliable information is provided. The moving object information storage device 3 is an information storage device equipped in a moving object 1, and includes: a moving object information storage unit 32 storing moving object information based on information detected by sensors which detect information related to the moving object 1; a tamper preventing unit 20 obtaining specifying information which can specify the moving object 1, and generating integrity information to be used for verifying if at least either the specifying information or the moving object information is tampered or not based on the obtained specifying information and the moving object information stored in the moving object information storage unit 32; and an integrity information storage unit 33 storing the integrity information generated by the tamper preventing unit 20.

Abstract: It is aimed, for example, to reduce an amount of power consumption of an operation concerning data encryption or decryption and to make it difficult to perform a power analysis. In the case an exclusive OR operation between 32-bit input data and a 32-bit key is performed to obtain output data of 32 bits, the input data is kept in an input shift register 105 of 32 bits and the key is kept in a key shift register 106 of 32 bits. Then, 1 bit of the input data and 1 bit of the key are input into a serial operator 107, and an exclusive OR of 1 bit is obtained and shifted to the left end of the input shift register 105. The key shift register 106 performs a cyclic right shift. By performing the above thirty-two times, the operation of 32 bits is completed and the last result is kept in the input shift register 105.

Abstract: An authenticating device 100 includes an authentication processing unit 197 to perform an authentication process with a communication device 200 using an authentication key, an update key generating unit 160 to generate a new authentication key when the communication device 200 does not hold an authentication key to be used in the authentication process by the authentication processing unit 197, and to generate a new authentication key for updating the authentication key when the communication device 200 holds the authentication key but the authentication process with the communication device 200 by the authentication processing unit 197 fails. The authentication processing unit 197 performs again the authentication process with the communication device 200 using the new authentication key generated by the update key generating unit 160.

Abstract: This invention relates to an encryption communication apparatus using encryption processing. It is an object of this invention to obtain the encryption communication apparatus with excellent tamper-resistance while ensuring sufficient securities. A communicating unit 1 sends and receives communication data including a length field and a data field. A length comparing unit 6 compares a value of the length field and a minimum length value stored in the apparatus in advance. When it is judged that the value of the length field is less than the minimum length value, a controlling unit 7 controls an encryption processing unit 5 not to perform encryption processing or decryption processing of the data in the data field.

Abstract: A first cutter 130 (cutting unit) is provided between a color recording unit 120 (the first printing unit) and an overcoat recording unit 140 (the second printing unit). A portion whereon color printing is completed by the color recording unit 120 of a recording paper 200 (printing medium) is cut off by the first cutter 130 and detached. An overcoat recording unit 140 performs an overcoat process on the detached recording paper (printing medium strip). In parallel with this, the color recording unit 120 performs next color printing on the recording paper 200. This makes it possible to reduce a printing time in a printing device including a plurality of printing processes without deteriorating printing quality. Further, an useless paper feeding is eliminated by optimally arranging the color recording unit 120, the first cutter 130, the overcoat recording unit 140, and the second cutter 160, etc. in accordance with a size of a printing area.

Abstract: An information storage device which can record highly reliable information is provided. The moving object information storage device 3 is an information storage device equipped in a moving object 1, and includes: a moving object information storage unit 32 storing moving object information based on information detected by sensors which detect information related to the moving object 1; a tamper preventing unit 20 obtaining specifying information which can specify the moving object 1, and generating integrity information to be used for verifying if at least either the specifying information or the moving object information is tampered or not based on the obtained specifying information and the moving object information stored in the moving object information storage unit 32; and an integrity information storage unit 33 storing the integrity information generated by the tamper preventing unit 20.

Abstract: It is aimed, for example, to reduce an amount of power consumption of an operation concerning data encryption or decryption and to make it difficult to perform a power analysis. In the case an exclusive OR operation between 32-bit input data and a 32-bit key is performed to obtain output data of 32 bits, the input data is kept in an input shift register 105 of 32 bits and the key is kept in a key shift register 106 of 32 bits. Then, 1 bit of the input data and 1 bit of the key are input into a serial operator 107, and an exclusive OR of 1 bit is obtained and shifted to the left end of the input shift register 105. The key shift register 106 performs a cyclic right shift. By performing the above thirty-two times, the operation of 32 bits is completed and the last result is kept in the input shift register 105.

Abstract: A communication apparatus for mutual communication, when acting as an authenticator communication apparatus performing authentication, includes a transmitting section that transmits to an authenticatee communication apparatus subject to authentication challenge data to authenticate the authenticatee communication apparatus in a time slot, which is a segmented period of time in which the communication apparatus to communicate with a specific communication apparatus; and a receiving section that receives from the authenticatee communication apparatus first response data for responding to the challenge data in the same time slot as the one in which the transmitting section transmits the challenge data. An objective is to carry out authentication of a tag by a Reader/Writer (R/W) and authentication of the R/W by the tag at the same time as an anti-collision process, and to further achieve confidentiality of unique ID information that is transmitted.

Abstract: An authenticating device 100 includes an authentication processing unit 197 to perform an authentication process with a communication device 200 using an authentication key, an update key generating unit 160 to generate a new authentication key when the communication device 200 does not hold an authentication key to be used in the authentication process by the authentication processing unit 197, and to generate a new authentication key for updating the authentication key when the communication device 200 holds the authentication key but the authentication process with the communication device 200 by the authentication processing unit 197 fails. The authentication processing unit 197 performs again the authentication process with the communication device 200 using the new authentication key generated by the update key generating unit 160.

Abstract: A blocking mask and an electrode coating are formed using a gold film. The blocking mask and the electrode coating are formed together by printing an organic gold paste only in a necessary part and baking the printed organic gold paste.

Abstract: The present invention aims to provide an image enhancement device of a thermal printer which can obtain a corrected image with high quality even if quantity of thermal storage to obtain recording density necessary for target gradation data is excessive or insufficient due to thermal history.

Abstract: An object of the present invention is to provide a color image display apparatus which can easily display a full-color animation of VGA class and attains reduction in size and lowering of price and which facilitates full-color gradation control.

Abstract: An optical printing device for exposing a photosensitive recording medium to form a grayscale image includes a print head having n rows of recording elements capable of exposure of different colors and aligned in a direction of advancement of the photosensitive recording medium, where n is an integer more than 1, the n rows of recording elements being spaced substantially a multiple of L×(m+k/n) apart in the direction of advancement of the photosensitive recording medium, where L denotes a distance between the centers of recording pixels according to the desired resolution of a recorded image, m is an integer of 1 or more, and k is an integer of 1 or more and less than n. The optical printing device also includes a head driver for driving the print head. Light from the print head is selectively exposed on the photosensitive recording medium to form the grayscale image.

Abstract: The present invention aims to provide an image enhancement device of a thermal printer which can obtain a corrected image with high quality even if quantity of thermal storage to obtain recording density necessary for target gradation data is excessive or insufficient due to thermal history.

Abstract: This invention relates to an encryption communication apparatus using encryption processing. It is an object of this invention to obtain the encryption communication apparatus with excellent tamper-resistance while ensuring sufficient securities. A communicating unit 1 sends and receives communication data including a length field and a data field. A length comparing unit 6 compares a value of the length field and a minimum length value stored in the apparatus in advance. When it is judged that the value of the length field is less than the minimum length value, a controlling unit 7 controls an encryption processing unit 5 not to perform encryption processing or decryption processing of the data in the data field.

Abstract: An object of the present invention is to provide a color image display apparatus which can easily display a full-color animation of VGA class and attains reduction in size and lowering of price and which facilitates full-color gradation control.

Abstract: A liquid crystal control device can eliminate instability in a light quantity characteristic of a light source occurring when an operating mode of a liquid crystal shutter is changed, thus provide a stable exposure or display, and realize high-quality picture recording. To this end, a timing at which the light source is turned on by a light source controller is delayed with respect to a timing at which a liquid crystal is driven to operate by a liquid crystal driving section.

Abstract: A transmissive color liquid crystal display including a first liquid crystal section, a light-guiding element, a second liquid crystal section, and first and second liquid crystal drivers. The first liquid crystal section presents color images. The light-guiding element is situated behind the first liquid crystal section for orienting rays toward the first liquid crystal display section. The second liquid crystal section includes a plurality of zones capable of transmitting wavelength bands of external rays, respectively. The zones are selectively activated for introducing colored external rays through respective zones to the light-guiding element. The first liquid crystal driver controls the first liquid crystal section.