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4937results about "Coding/ciphering apparatus" patented technology

System for controlling access and distribution of digital property

A method and device are provided for controlling access to data. Portions of the data are protected and rules concerning access rights to the data are determined. Access to the protected portions of the data is prevented, other than in a non-useable form; and users are provided access to the data only in accordance with the rules as enforced by a mechanism protected by tamper detection. A method is also provided for distributing data for subsequent controlled use of those data. The method includes protecting portions of the data; preventing access to the protected portions of the data other than in a non-useable form; determining rules concerning access rights to the data; protecting the rules; and providing a package including: the protected portions of the data and the protected rules. A user is provided controlled access to the distributed data only in accordance with the rules as enforced by a mechanism protected by tamper protection. A device is provided for controlling access to data having protected data portions and rules concerning access rights to the data. The device includes means for storing the rules; and means for accessing the protected data portions only in accordance with the rules, whereby user access to the protected data portions is permitted only if the rules indicate that the user is allowed to access the portions of the data.
Owner:HANGER SOLUTIONS LLC

Secure electronic content distribution on CDS and DVDs

A method to delivery encrypted digital content to a end user system for playing the content comprising the steps of: reading from a computer readable medium metadata which has previously associated with the content. A user selects from the metadata associated content to decrypt and the end user system establishes a secure connection with an authorization authority for decrypting the content. The end user system receives a secure container containing the decrypting key for decrypting at least part of the previously encrypted content as permitted. The system creates a secure container using the encrypting key from a clearing house, wherein the secure container has an encrypting key therein from the end user system; transferring the secure container to the clearing house for authentication of permission to decrypt the content. The system receives from the clearing house, a secure container encrypted using the encrypting key of the end user system containing the decrypting key for decrypting at least part of the previously encrypted content stored on the computer readable medium as permitted; and playing at least part of the previously encrypted content by decrypting the secure container using the encrypting key of the end user system to access the decrypting key for decrypting at least part of the encrypted content.
Owner:WISTRON CORP

Centralized certificate management system for two-way interactive communication devices in data networks

The present invention discloses a central certificate management system for thin client devices in data networks and has particular applications to systems having a large number of the thin clients serviced by a proxy server through which the thin clients communicate with a plurality of secure server computers over a data network. According to one aspect, the present invention provides a certificate management module that causes the server device to manage digital certificates for each of the thin client devices. To minimize the latency of obtaining certificates for each of the thin client devices, the certificate management module reserves a fixed number of free certificates signed by a certificate authority and their respective private keys in a certificate database and frequently updates the free certificate according to a certificate updating message. Whenever a user account is created for a thin client device, the certificate management module fetches one or more free certificates from the certificate database and associate the fetched certificates to the created account and meanwhile the certificate management module creates new free certificates with the certificate authority to fill in the certificate database. Apart from the tradition of obtaining certificates locally in client devices that normally have sufficient computing power, the present invention uses the computing resources in a server device to carry out the task of obtaining and maintaining certificates asynchronously in the proxy server and further. These and other features in the present invention dramatically minimize the demands for computing power and memory in thin client devices like mobile devices, cellular phones, landline telephones or Internet appliance controllers.
Owner:UNWIRED PLANET

Method and system of program transmission optimization using a redundant transmission sequence

A system and method of optimizing transmission of a program to multiple users over a distribution system, with particular application to video-on-demand for a CATV network. The system includes, at a head end of the CATV network a scheduling and routing computer for dividing the video program stored in long term fast storage or short term fast storage into a plurality of program segments, and a subscriber distribution node for transmitting the program segments in a redundant sequence in accordance with a scheduling algorithm. At a receiver of the CATV network there is provided a buffer memory for storing the transmitted video program segments for subsequent playback whereby, in use, the scheduling algorithm can ensure that a user's receiver will receive all of the program segments in a manner that will enable continuous playback in real time of the program. Under the control of controller the receiver distinguishes received program segments by a segment identifier so that redundant segments captured in capture memory are then stored in buffer memory from which the segments can be retrieved and decompressed in data compressor for immediate or subsequent viewing. In one embodiment, the method of this invention includes dividing at least some segments into fragments, and transmitting one fragment of each segment during a playback interval of a duration, for example, equal to a playback time of a segment.
Owner:DETA TECH DEV

Method and system for distributing multimedia data with management information

A multimedia data distributing system comprising an ID issuing center side device and a multimedia data distributor side device for distributing multimedia data as electronic data to a purchaser of the multimedia data. The multimedia data distributor device includes: an attribute information transmitting unit that transmits attribute information of the electronic data indicating the multimedia data to be distributed, to the ID issuing center side device; a watermark information embedding unit that embeds information specifying the ID number transmitted from the ID issuing center side device in response to the attribute information transmitted to the attribute information transmitting unit, as an watermark information in the electronic data indicating the multimedia data to be distributed; and a distribution unit that distributes the electronic data indicating the multimedia data, in which the information specifying the ID number is embedded as the watermark information by the watermark information embedding unit, to the purchaser of the multimedia data. The ID issuing center side device includes: an ID number generating unit that generates a unique ID number and registering the generated ID number in a database in a manner to correspond to the attribute information transmitted by the distributor of the multimedia data; and an ID number transmitting unit that transmits the information specifying the generated ID number to the multimedia data distributor device.
Owner:HITACHI LTD

System for controlling access and distribution of digital property

A method and device are provided for controlling access to data. Portions of the data are protected and rules concerning access rights to the data are determined. Access to the protected portions of the data is prevented, other than in a non-useable form; and users are provided access to the data only in accordance with the rules as enforced by a mechanism protected by tamper detection. A method is also provided for distributing data for subsequent controlled use of those data. The method includes protecting portions of the data; preventing access to the protected portions of the data other than in a non-useable form; determining rules concerning access rights to the data; protecting the rules; and providing a package including: the protected portions of the data and the protected rules. A user is provided controlled access to the distributed data only in accordance with the rules as enforced by a mechanism protected by tamper protection. A device is provided for controlling access to data having protected data portions and rules concerning access rights to the data. The device includes means for storing the rules; and means for accessing the protected data portions only in accordance with the rules, whereby user access to the protected data portions is permitted only if the rules indicate that the user is allowed to access the portions of the data.
Owner:HANGER SOLUTIONS LLC

Server for an electronic distribution system and method of operating same

A server architecture for a digital rights management system that distributes and protects rights in content. The server architecture includes a retail site which sells content items to consumers, a fulfillment site which provides to consumers the content items sold by the retail site, and an activation site which enables consumer reading devices to use content items having an enhanced level of copy protection. Each retail site is equipped with a URL encryption object, which encrypts, according to a secret symmetric key shared between the retail site and the fulfillment site, information that is needed by the fulfillment site to process an order for content sold by the retail site. Upon selling a content items, the retail site transmits to the purchase a web page having a link to a URL comprising the address of the fulfillment site and a parameter having the encrypted information. Upon the following the link, the fulfillment site downloads the ordered content to the consumer preparing the content if necessary in accordance with the type of security to be carried with the content. The fulfillment site includes an asynchronous fulfillment pipeline which logs information about processed transactions using a store-and-forward messaging service. The fulfillment site may be implemented as several server devices, each having a cache which stores frequently downloaded content items, in which case the asynchronous fulfillment pipeline may also be used to invalidate the cache if a change is made at one server that affects the cached content items. An activation site provides an activation certificate and a secure repository executable to consumer content-rendering devices which enable those content rendering devices to render content having an enhanced level of copy-resistance. The activation site “activates” client-reading devices in a way that binds them to a persona, and limits the number of devices that may be activated for a particular persona, or the rate at which such devices may be activated for a particular persona.
Owner:MICROSOFT TECH LICENSING LLC

Method and apparatus for making secure electronic payments

In accordance with the present invention, consumers and merchants use computing devices connected to a network, such as the Internet, through wired and wireless means, wherein the consumer connects to a clearing server device to purchase or retrieve previously purchased token, the consumer then connects to the merchant's computer or website to attain price quotes of goods and services, selects the goods and / or services to be purchased, and then communicates a request for purchase to the merchant. The merchant then communicates a request for an update key to the clearing server. The update key is used as an authorization to modify the value of the token. To debit the customer the decrement key is requested and to credit the customer an increment key is asked for. An overwrite key is another type of update key. Together with the overwrite key a replacement token is provided to the merchant who in turn forwards the new token to the customer. As an aspect of the invention, if the token was not previously used, the clearing server simply issues the update key. If, however, it is determined that the token was used, the amount paid by the consumer to a previous merchant is determined the token adjusted and the overwrite key together with the new token is returned to the merchant. The merchant then forwards the purchased merchandise, the update key, and possibly a new token to the consumer.
Owner:AMPACASH CORP

Data authentication system

A data processing apparatus a data processing method efficiently ascertain that data are valid, prevent encryption processing key data from leaking, eliminate illegal use of contents data, restrict contents utilization, apply a different plurality of data formats to contents and efficiently execute reproduction processing of compressed data. The verification process of partial data is executed by collating the integrity partial data as check values for a combination of partial data of a content, and the verification process of the entirety of the combination of partial data is executed by collating partial-integrity-check-value-verifying integrity check values that verify the combination of the partial integrity check values. Master keys to generate individual keys necessary for a process of such as data encryption are stored in the storage section and keys are generated as required. An illegal device list is stored in the header information of a content and referred to when data is used. Keys specific to a data processing apparatus and common keys are stored and the keys are selectively used according to the content use restriction. Plural content blocks are coupled, and at least a part of the content blocks is applied to an encryption process by an encryption key Kcon, then encryption key data that is the encryption key Kcon encrypted by an encryption key Kdis is stored in the header section. A content data is made of compression data and an expansion processing program or a combination of types of compression programs and the reproducing apparatus can determine an expansion program applicable to a compressed content.
Owner:SONY CORP

Communication-status notification apparatus for communication system, communication-status display apparatus, communication-status notification method, medium in which communication-status notification program is recorded and communication apparatus

A communication-status notification apparatus enabling a subscriber to observe various kinds of communication status in a network easily via the subscriber's own terminal in a communication system. The apparatus includes a request analysis section for discriminating whether or not voice data received by gateway equipment from a subscriber terminal contains a request on monitoring / controlling or notifying of a communication status in the network and for analyzing the content of the request when contains, a communication-status monitor / control section for monitoring / controlling the communication status responsive to the content of the request analyzed by the request analysis section based on a processing status of the voice data in the gateway equipment, and a communication-status notification section for notifying the subscriber terminal of the communication status monitored / controlled by the communication-status monitor / control section via the gateway equipment responsive to the content of the request analyzed by the request analysis section. The apparatus is useful when applied to VoIP gateway equipment or the like used for a VoIP communication system.
Owner:FUJITSU LTD
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