摘要:
The disclosure relates to a method and a circuit for storage of digital tuning data and parameters for a number of television channels in a rewritable memory. The channel search is initialized by pressing a single button to initialize a scan of the reception frequency band. The scanning of the frequency range is interrupted for a preset time-out period .DELTA.t each time a stop-scan signal is generated and resumes automatically until the entire range has been scanned. After each stop-scan pulse, if the single button is pressed during a time-out period, At, the system begins toggling through the possible values of each parameter relating to the station, the current value of the parameter being memorized when the single button is pressed again. The invention also includes a television and video cassette recorder implementing the above method.
摘要:
There is disclosed a method for selecting programs in a digital video reception system adapted to receive digital data streams. The method comprises the steps of receiving information corresponding to program identification elements; displaying the identification elements in the form of a mosaic of elements (10) on a screen of the reception system, where the arranging of identification elements (10) in the mosaic is performed before transmission; receiving information describing the location of each program thus identified in a data stream broadcast by a transmitter (15); and selecting one of the programs by selecting at least one identifier clement. A device for selecting programs in a digital video reception system is also disclosed.
摘要:
A video receiving device (A) that includes a circuit for receiving first video signals from a remote transmitter, a circuit for receiving second video signals from another video receiver (TVS), a circuit (TU1) for automatic searching for transmission channels, and a circuit (PC) for phase comparison between the vertical synchronization signals of the first video signals and the vertical synchronization signals of the second video signals that can output an "outphasing" signal that is used for controlling the operation of the automatic channel search circuit, wherein the video receiving device (A) also includes a control circuit (CC) that enables the video signals that it is receiving to be displayed for a pre-determined time on the other video receiver (TVS). The invention is applicable notably to the programming of video recorders, and to the automatic tuning of such a recorder to the channel being viewed on a TV receiver in order to enable simple and immediate recording of this channel.
摘要:
There are times when a first user may wish to distribute an excerpt of a protected digital content to a second user, for example for criticism. The protected digital content is divided into a plurality of parts, each part being encrypted using a control word specific for the part, wherein each control word can be generated from a master control word for the protected digital content. A device belonging to the first user selects the parts of the excerpt; generates the control words for the selected parts from the master control word; generates a license for the selected parts, the license comprising the control words for the selected parts; and transmits the selected parts and the license to the receiver of the second user. Also provided is the device of the first user.
摘要:
A rotation-activated electronic component, preferably a RFID tag mounted on or incorporated in a support that is rotated when read, e.g. a CD or DVD. The RFID tag comprises an antenna, a rotational switch, a component, advantageously a processor, and a time usage limiter. The antenna is adapted to transform received RFID signals to electric energy that powers the component and the rotational switch is adapted to cut the circuit unless the support does not rotate at or above a certain rotational speed. The time usage limiter counts down a timer when it is powered via the rotational switch and disables the RFID tag when the timer expires. Supports equipped with the RFID tag of the invention will thus respond until the timer expires, and preferably only if they rotate sufficiently.
摘要:
A rotation-activated electronic component, preferably a RFID tag mounted on or incorporated in a support that is rotated when read, e.g. a CD or DVD. The RFID tag comprises an antenna, a rotational switch and a component, advantageously a processor. The antenna is adapted to transform received RFID signals to electric energy that powers the component. In a preferred embodiment, the rotational switch is adapted to cut the circuit unless the support does not rotate at or above a certain rotational speed. Supports equipped with the RFID tag of the invention will thus respond only if they rotate sufficiently. This can avoid collisions in case more than one such RFID tag is within communication range of an antenna of a reader. In a preferred embodiment, the information returned by the component is needed for full use of the content on the support.
摘要:
Within the context of the broadcasting of DVB services over an IP network, the trend is to separate the signalling information describing the network and the services offered from the services themselves. The signalling is made available to the terminals via XML files available on HTTP servers. In contrast to this approach, the invention consists of a method of recognition, by a receiver connected to a bidirectional network, of digital services on the bidirectional network, which comprises a step in which the receiver connects to a first stream, a step in which the receiver extracts from said stream information on the location on the network, on the one hand, of streams conveying the content of these services and, on the other hand, of separate streams conveying information describing these services, a step in which the receiver connects to at least some of the streams conveying service description information to obtain information on these services and a step in which the receiver uses this information to construct a list, possibly unitary, of the services available on the network.
摘要:
A method for acquisition of a software application stored on a software application distribution unit and intended to be supplied to a user computer unit is disclosed wherein, the user computer unit communicates an item of identification information identifying the software application to be acquired to an electronic security module connected to the user computer unit. The module generates, using a secret and identification information, an item of user information and transmits it with the identification information to the unit. The unit protects with the user information the software application identified by the identification information and the protected software application is transmitted to the user computer unit. Thus, the software application is protected with an item of information from the electronic security module of the user. The protected software application then has its protection removed on an electronic security unit equipped with an electronic security module.
摘要:
A 3D object is protected by a first device that receives the 3D object, permutes the coordinates of at least one dimension of at least some of the points of the 3D object to obtain a protected 3D object, and outputs the protected 3D object. The coordinates of the dimensions are preferably permuted independently of the permutations of the other dimensions. The protected 3D object is unprotected by a second device (140) by receiving the protected 3D object, permuting the coordinates of at least one dimension of at least some the points of the protected 3D object to obtain an unprotected 3D object, and outputting the unprotected 3D object. Also provided are the first device, the second device and computer readable storage media.
摘要:
The present invention relates to a device and a process for acquiring files by accumulation of points. The device is designed for a user of a receiver of data of a communication network, able to earn points by accomplishing at least one predefined operation, and to acquire at least one of the files by downloading via this communication network, when the aggregate number of points reaches a predetermined level associated with this file. The device comprises an automatic control module for ordering downloading via this network to a storage space accessible to this receiver, of portions of this file, designed to order the downloading of each of these portions when the number of points earned by this user reaches a fraction of this predetermined level which corresponds to this portion.