Patent application number | Description | Published |
20080212770 | Key Information Generating Method and Device, Key Information Updating Method, Tempering Detecting Method and Device, and Data Structure of Key Information - A domain key is used to perform chaining decryption with respect to encrypted content key information (ST | 09-04-2008 |
20080241691 | SINTERED SUBSTRATE AND ALKALINE STORAGE BATTERY USING THE SUBSTRATE - A sintered substrate is configured such that pores having a pore size (pore radius) of from 5 μm to 7 μm have a peak volume fraction with respect to the total pore volume of the sintered substrate, and pores having a pore radius of greater than 8.5 μm has a volume fraction of 11% or less with respect to the total pore volume of the sintered substrate. The sintered substrate has a smaller number of large-sized pores than conventional sintered substrates and a more uniform pore size distribution, and therefore shows a sufficient strength even when the porosity is increased. In addition, a cadmium negative electrode employing the sintered substrate shows excellent gas absorption capability and therefore can reduce the internal pressure of the battery during charge. | 10-02-2008 |
20090013195 | Data Storing Method, Data Playback Method, Data Recording Device, Data Playback Device, and Recording Medium - Provided is a method for performing high-speed search for a content key associated with encrypted content in the case of a key-separation-type content management method where content keys and their respective pieces of encrypted content are correlated by ID information and stored in different recording media. An external recording medium is used to store a plurality of content files that contain: their respective pieces of encrypted content that are encrypted with different encryption keys; and their respective content IDs, each being associated with a corresponding piece of the encryption content, and a semiconductor recording medium is used to store a list that contains: pieces of encryption key storage location information, each indicating where a corresponding one of the encryption keys is stored; and the content IDs, the list being sorted in accordance with the content IDs. When encrypted content is played back, the list is searched to find encryption key storage location information associated with a content ID that matches the content ID of the encrypted content, and the encryption key is read based on the encryption key storage location information. | 01-08-2009 |
20090147960 | CONTENT SEARCH DEVICE - A content search device calculates the number of valid encrypted contents as comparison objects contained in encrypted content databases and the number of valid decryption keys contained in decryption key databases. The database having the smaller number is decided to be a reference database. By successively reading out entries contained in the reference database, a combination of an encrypted content and a corresponding decryption key is searched. | 06-11-2009 |
20090231968 | RECORDING MEDIUM STORING MANAGEMENT INFORMATION FOR CONTENT ATTRIBUTE AND RECORDING DEVICE AND PLAYBACK DEVICE FOR THE RECORDING MEDIUM - A semiconductor recording medium stores attribute management information for managing various attribute information on a content (genre, composer, artist, album, title, etc.) for each item; and sort management information managing information on a sort order when information managed by the attribute management information is sorted by a predetermined procedure. The attribute management information contains character data indicating items to be managed and pointer information indicating link relationship between the attribute management information. The sort management information contains information on the sort order when all the entries in each of attribute management information are sorted by a predetermined procedure for each of attribute management information. | 09-17-2009 |
20090232312 | ENCRYPTED CONTENT REPRODUCTION DEVICE, ENCRYPTED CONTENT REPRODUCTION METHOD, PROGRAM, AND RECORDING MEDIUM FOR STORING THE PROGRAM - The invention presents an encrypted content playback equipment capable of decryption and playback of an encrypted content by using key information when a key medium storing the key information is not inserted, an encrypted content playback method, a program, and a recording medium for storing the program. | 09-17-2009 |
20100146633 | Memory Controller,Non-Volatile Storage Device, Non-Volatile Storage System,Access Device, and Data Management Method - In a memory controller according to the present invention, an external I/F unit receives ID information associated with data from the outside of a non-volatile memory, and a recording controller manages a recording position of the data in the non-volatile memory based on the ID information, so that an amount of time necessary for the retrieval of rights information based on the ID information is reduced. | 06-10-2010 |
20100156023 | Image Forming System Including Finisher with Stapler for Binding Printed Papers - In an image forming device, images of originals up to an upper limit number of stapling are read (S | 06-24-2010 |
20100167122 | ALKALINE STORAGE BATTERY - Disclosed is an alkaline storage battery comprising a negative electrode, a positive electrode, a separator and an alkaline electrolyte solution in a package can. The negative electrode contains a hydrogen storage alloy represented by the following general formula: Ln | 07-01-2010 |
20100205461 | METHOD FOR GENERATING DATA FOR DETECTION OF TAMPERING, AND METHOD AND APPARATUS FOR DETECTION OF TAMPERING - In a target apparatus which stores at least one piece of domain key information in a first area and a plurality of pieces of content key information each associated with any one of the domain key information in a second area, a method for generating data for detecting tampering of the content key information. The method comprises the steps of encrypting the content key information associated with one of the domain key information using a chain encryption technique; extracting data at predetermined positions in the encrypted content key information, concatenating the pieces of data extracted at the predetermined positions in the encrypted content key information to obtain concatenated data, performing a hash calculation with respect to the concatenated data to obtain a hash value, storing check values corresponding to the data at the predetermined positions in plain text, in the target apparatus, and storing the hash value in the target apparatus. | 08-12-2010 |
20100217787 | CONTROLLER, INFORMATION RECORDING DEVICE, ACCESS DEVICE, INFORMATION RECORDING SYSTEM, AND INFORMATION RECORDING METHOD - In a file system such as an FAT file system, clusters are linked only in the forward direction. To perform seeks to clusters in the reverse direction, links need to be followed from the beginning side of the file data in every seeking operation. When a large amount of data is subjected to such reverse seeking, the overhead will be particularly large. A memory controller ( | 08-26-2010 |
20100268899 | MEMORY CONTROLLER, NONVOLATILE STORAGE DEVICE, DATA PROCESSING DEVICE, NONVOLATILE STORAGE DEVICE SYSTEM, AND METHOD - A memory controller ( | 10-21-2010 |
20100332717 | ACCESS DEVICE, INFORMATION RECORDING DEVICE, CONTROLLER, AND INFORMATION RECORDING SYSTEM - Provided is a method that, in the case of managing areas of a non-volatile memory of an information recording module by a file system, increases the speed of processing for writing file data and file system management information, and furthermore prevents a decrease in the rewriting lifetime of the non-volatile memory. The information recording module ( | 12-30-2010 |
20110022807 | WRITE ONCE RECORDING DEVICE - An access device | 01-27-2011 |
20110055467 | DATA AREA MANAGING METHOD IN INFORMATION RECORDING MEDIUM AND INFORMATION PROCESSOR EMPLOYING DATA AREA MANAGING METHOD - Area management information is cached in a cache memory by controlling the access size when an information processor accesses the area management information in an information recording medium. When the processing content of the information processor is to retrieve a free area from the area management information, a physical management block size determined from the physical characteristics of the information recording medium is used. When the processing content is to acquire a link destination from the area management information, minimum access unit of the information recording medium is used. Consequently, overhead can be lessened when the area management information is accessed. | 03-03-2011 |
20110282740 | INFORMATION PROCESSING APPARATUS AND CONTROL METHOD THEREOF - To combine thrifty power consumption with up-to-dateness of displayed information, an information processing apparatus ( | 11-17-2011 |