摘要:
Moving-picture data in a frame is encoded without depending on another frame of moving-picture data, and moving-picture data in a frame is encoded depending on another frame of moving-picture data. Whether each frame of moving-picture data is a frame which was encoded without depending on another frame of moving-picture data or which was encoded depending on another frame of moving-picture data is determined. The frame of moving-picture data was thus determined as having been encoded without depending on another frame of moving-picture data. The enciphered moving-picture data includes the frame of moving-picture data and the frame of moving-picture data which was determined as being the frame which was encoded depending on another frame of moving-picture data.
摘要:
The present invention was made in order to provide a technology capable of safely ciphering compressed and encoded image data irrespective of lines or media and carrying out a correct decoding operation without any shifts in the frames of ciphered moving pictures. Further, so as to prevent giving any means of encoding from comparison of image ciphered data and so as to generate totally different ciphered image data from the same data compressed images, a processing is executed not on an ECB mode but on such modes as CBC, CFB, OFB or the like. Moreover, as an initial vector, information different for frames included in a header, that is, time information from the start of an image or a frame sequential number, is used. In this way, even if compressed images within adjacent frames are accidentally the same, totally different ciphered data can be obtained.
摘要:
A software charging system includes a utilization permitting device for giving permission to use a software storing medium storing ciphered programs or data (software); and an authorization center capable of communicating with the utilization permitting device for setting a utilizable amount, totalling utilization amounts and charging a user. The utilization permitting device includes: a utilization permission processing part having a clock for obtaining date and time data, and having a date and time data storing unit for storing obtained date and time data until obtaining next data and time data; and a utilization amount managing part for calculating a software utilization amount of an end user. A software utilization amount is managed based on the number of days at the utilization permission processing part.
摘要:
A file protection system for protecting a file which is stored in a storage unit includes a storage position deciding unit for deciding a positional-information corresponding to an area in which information of the file is stored in the storage unit and an encryption unit for encrypting the information of the file in accordance with a predetermined algorithm using at least a part of the positional-information decided by the storage position deciding unit. Information obtained by the encryption unit is stored in the area identified by the positional-information in the storage unit. A file protection system is operable when information of a file which was encrypted as described above is read out from a storage unit. The file protection system includes a decryption unit for decrypting the encrypted information of the file which is read out from an area in the storage unit using information corresponding the area, an extracting unit for extracting the positional-information from information obtained by the decryption unit, and a determination unit for determining whether or not the positional-information extracted by the extracting unit is equal to corresponding positional-information which is at least a part of the information corresponding to the area from which the encrypted information of the file is read out. When the determination unit determines that two pieces of positional-information are not equal to each other, it is determined that the information obtained by the decryption unit does not include correct information of the file.
摘要:
The present invention provides a data content utilizing device having data storing section for storing information obtained by encoding data contents and content identification information specifying the data contents, a utilization permitting device for generating utilization permission information used to decode data contents desired by a user and information converting section for loading data contents requested by the user from the data storing section and decoding the data contents only in the case where utilization permission information is generated by the utilization permitting device.
摘要:
In accordance with the present invention, there is provided a transformation pattern generating mechanism comprising: a key input section for inputting a key for encryption; a transformation pattern generating section for generating a transformation pattern for transformation of input data; and an output section for outputting the generated transformation pattern; wherein, when a number sequence corresponding to a predetermined transformation pattern is input as the key to the key input section, said transformation pattern generating section generates and outputs the predetermined transformation pattern corresponding to the number sequence.
摘要:
A tag access control system capable of setting an appropriate parameter for controlling a reader/writer can be provided. The tag access control system includes a control portion that controls data communication between an IC tag and a reader/writer by sending a command to the reader/writer in accordance with a parameter and receiving an execution result; and a parameter adjustment portion that adjusts the parameter to an appropriate value. The parameter adjustment portion includes a parameter change portion that changes the parameter a plurality of times, a result storage portion that records execution results of commands based on a plurality of parameters that are changed and a calculation portion that calculates an appropriate parameter based on the execution results stored in the result storage portion.
摘要:
A tag access control system capable of setting an appropriate parameter for controlling a reader/writer can be provided. The tag access control system includes a control portion that controls data communication between an IC tag and a reader/writer by sending a command to the reader/writer in accordance with a parameter and receiving an execution result; and a parameter adjustment portion that adjusts the parameter to an appropriate value. The parameter adjustment portion includes a parameter change portion that changes the parameter a plurality of times, a result storage portion that records execution results of commands based on a plurality of parameters that are changed and a calculation portion that calculates an appropriate parameter based on the execution results stored in the result storage portion.
摘要:
Method for making delivery of products more efficient, and having deliveries made that are convenient for delivery recipients. When a user (delivery recipient 3) purchases a product from a vendor and applies for delivery, a management server 4 accepts a delivery application from a vendor client 1. The management server 4 notifies the delivery recipient client 3 of the application for delivery, and prompts the user to designate delivery terms. For example, a delivery terms designation form is provided on a web page, and the URL for that web page is provided in the application for delivery notification. The delivery recipient client 3 accesses the web page and refers to a list of products to be delivered to him or herself. Moreover, the delivery recipient designates delivery terms when he or she is certain of his or her schedule. A delivery business is notified of these delivery terms.
摘要:
To notify users, in real time, of information that matches a search preference. Preference database 12, register 11, preference setting unit 1, recording unit 13, preferential search unit 14, notification unit 15 and channel display section 2 are provided. Preference database 12 stores, associated with the user, one or more search preferences to search for a channel. Register 11 registers search preferences in preference database 12. Preference setting unit 1 receives the input of search preferences, and sends them to register 11, associated with the user. Recording unit 13 stores the state of each channel. Preferential search unit 14 judges, based on the state of each channel, whether each channel satisfies any search preference. Based on the judgment of preferential search unit 14, notification unit 15 notifies the corresponding user terminal of the channel that meets any search preference of the user. Channel display section 2 outputs the reported contents.