摘要:
A display control apparatus includes a search unit for searching for a second content related to a first content in accordance with at least part of metadata attached to each of the first content and the second content, a generating unit for generating a three-dimensional display model, the three-dimensional display model including a first layer and a second layer, the first layer having one of a first image and a first character representing the first content arranged therewithin, and the second layer having one of a second image and a second character representing the second content arranged therewithin, and a display control unit for controlling displaying one of the first image and the first character and one of the second image and the second character using the three-dimensional display model.
摘要:
There is provided an image reading apparatus including: a reading device configured to read a manuscript supplied by a first or a second supply mode, a switching device configured to switch the first and second supply modes, a display, and a controller. The controller is configured to cause the display to display a first screen in a case that the switching device switches the supply mode to the first supply mode, as well as to cause the display to display a second screen in a case that the switching device switches the supply mode to the second supply mode.
摘要:
An image processor includes a display. The display displays a preset-setting-group selection screen containing a plurality of icons respectively corresponding to preset-setting groups such that one icon is displayed in a manner indicative of a selected state while at least one icon other than the one icon is displayed in a manner that is indicative of an unselected state. When any of set values of a preset-setting group corresponding to the one icon having been displayed in the manner indicative of the selected state, the display displays a preset-setting-group-updated screen containing the one icon displayed in the manner indicative of the selected state on the preset-setting-group selection screen and not containing the at least one icon in the manner indicative of the unselected state on the preset-setting-group selection screen.
摘要:
An image forming apparatus, including: a display device; a coordinate detecting portion which detects a directed coordinate in a display area including a first area in which is displayed a hierarchy image including uppermost-level images and lower-level images; a first display control section; a second display control section to display at least one first button image; and a third display control section, the uppermost-level images including: a first image in which is displayed at least one second button image; a second image in which is displayed at least one third button image; and a third image, wherein, where the directed coordinate is one of coordinates corresponding to the first through third button images, the third control section displays a lower-level image corresponding to a button image corresponding to the directed coordinate, and wherein the first control section executes processing to display the one uppermost-level image so as to be changed.
摘要:
A key management apparatus which can be used to encrypt/decrypt content data in a content playback device includes a storing unit for storing a secret key, a key information decrypting unit for decrypting encrypted key information and an updating unit operable to update the secret key with an algorithm stored therein, when the decrypted key information is key-updating information. Seed information can be received for use with the algorithm to provide a new secret key, and preliminary trigger information can be used to poll a group of appliances to request key information to determine any duplication of appliances.
摘要:
An optical trackball device of the present invention includes a ball as an operating member, using a material that partially transmits light, and this ball is rotatably supported by a support member. Light emitted from a light emitter disposed beneath the ball is reflected on this ball. A detector detects the reflected light to identify rotation of the ball. Since the light from the light emitter is partially transmitted through the ball, the ball can be illuminated without providing an additional component. Accordingly, a location of the ball is easily recognizable even in a dark place.
摘要:
A data usage controlling apparatus that reads a type 1 key from a storage unit and (a) main data, (b) a type 2 key that has been encrypted using the type 1 key, and (c) condition information that has been encrypted using the type 2 key from a recording medium, decrypts the condition information using the type 2 key, and controls usage of the read main data in accordance with the decrypted condition information. In accordance with usage of the main data, the decrypted condition information is updated, a new type 2 key is generated, and the stored type 1 key is updated. The updated condition information is encrypted using the new type 2 key and used to replace the encrypted condition information on the recording medium. The new type 2 key is encrypted using the updated type 1 key and used to replace the encrypted type 2 key on the recording medium.
摘要:
A multi-word arithmetic device, capable of executing a variety of types of multi-word arithmetic required for elliptic curve cryptology, includes the following. A memory 40, formed from two dual-port memories 41 and 42, temporarily stores n-word integers on which calculation is performed, and a calculation result. An arithmetic unit 20 executes two or more types of calculation, including addition and multiplication, on each word, and outputs a one-word result. A memory input/output unit 30 supplies a maximum of three pieces of one-word data from the memory 40 to the arithmetic unit 20, while simultaneously storing a one-word calculation result from the arithmetic unit 20 in the memory 40. A control unit 10 controls the arithmetic unit 20 and the memory input/output unit 30 so as to have the arithmetic unit execute one of modular addition and Montgomery reduction on n words.
摘要:
In a cryptography system, plaintext storage unit 101 stores a plaintext. Encryption unit 102 encrypts the plaintext to generate a ciphertext. First verification data generating unit 104 generates first verification data, and second verification data generating unit 106 generates second verification data. Decryption unit 114 decrypts the ciphertext to generate a decrypted plaintext. First verification unit 116 performs verification using the decrypted plaintext and the first verification data. Second verification unit 117 performs verification using the first verification data, the ciphertext, and the second verification data. Display unit 112 displays the results of the verifications.
摘要:
A fixed-point multiple calculation apparatus, for use in an encryption method and a signature method that use elliptic curves, finds multiples of a fixed point and an arbitrary point at high speed. The fixed-point multiple calculation apparatus generates a pre-computation tables for multiples of digits at one-word intervals and for multiples of digits at half-word intervals. Using the tables, multiples of points on an elliptic curve are calculated using a doubling process, but with a reduced number of additions. This reduces the overall amount of required calculation.