Abstract:
A method for constructing a sequence of video pictures is disclosed. A region of a video picture that is supposed to be used as a predictor to construct a block corresponding to a second picture in a video sequence is ignored when an error correction technique is used to construct the predictor region (405). The invention applies information corresponding to a region from an alternative picture (410) in the video sequence as replacement for the predictor region. This replacement information is then used as the basis to predictively construct the block in accordance with a video decoding operation (415).
Abstract:
The invention relates to a microwave filter comprising a coaxial structure, consisting of a tubular outer conductor (1) and an inner bar conductor (2). According to the invention, the inner bar conductor extends in an axial direction (A) inside the outer tube and, together with said tube, forms a series of concentric slots (3A-3D) in the axial direction, thereby defining successive coaxial line segments with low characteristic impedance and coaxial line segments with high characteristic impedance. The aforementioned concentric slots are produced in a synthetic foam block.
Abstract:
The invention relates generally to a method and an apparatus for synchronizing a digital transmission using beacon packets, and in particular, by using beacon packets utilized in communication between a wireless access point and a wireless station in accordance with operating in accordance with the Institute of Electrical & Electronics Engineers' IEEE standard 802.11. A communication device comprises a means for creating a plurality of logical access points; a means for downloading a SSID into a mobile terminal in accordance with a user's of communication reception, and a means to permit the mobile terminal to switch from one logical access point to second logical access point depending on the current state of the logical access point and the user's choice.
Abstract:
A mobile terminal user (16) can trigger a handoff from a first radio access node (18) to a second radio access node (30) in a communications network by making such a request to one of the two nodes. The request made by the mobile terminal user (16) will trigger in the network (10) a command to relocate (handoff) the mobile terminal user. In response to the command, the mobile terminal user is assigned to the second radio access node (30) and is released from the first radio access node (18).
Abstract:
The invention relates to performing an MDCT of a digital input signal of length N, wherein by generating a specific ins termediate signal of length N/2 the MDCT can be performed by a number of only N /4 multiplications of data values of the intermediate signal with cosine values.
Abstract:
The invention relates to a device and a method for conditional execution decision making (2) in relation to services received, having pre-determined lifespans. The inventive device receives and identifies information relating to computer programs required for the execution of said services. Moreover, the device controls the local availability of said programs and authorises the execution of services if the associated programs are available locally. In addition, the device can trigger the downloading of programs (13) when said programs are not available locally and authorise or prevent one such downloading operation at least as a function of the information associated with the services. The invention also relates to a device and a method for creating associated messages. The invention can be applied to standards ATVEF and MHP.
Abstract:
An apparatus and method for synchronizing the reception of a spread-spectrum signal include a synchronization apparatus (400) having a code-matched filter (410), a running average unit (413) in signal communication with the code-matched filter, a peak detector (422) in signal communication with the running average unit, and a synchronizer (424) in signal communication with the peak detector for providing an index of a peak.
Abstract:
Système comprenant un système d'illumination 1 pour déplacer des bandes de lumière de couleurs différentes sur l'imageur 12, des moyens pour identifier la couleur d'illumination de chaque ligne de pixels de cet imageur, des moyens de gestion de données vidéo 15 des-dites images pour commander l'écriture des pixels, des moyens de synchronisation 11 des données vidéo envoyées à chaque ligne de pixels 120 en fonction de la couleur d'illumination de ladite ligne, identifiée par les moyens d'identification. Les moyens d'identification comportent, au niveau de certaines lignes de pixels 120 de l'imageur 12, au moins un capteur photosensible 121 intégré au substrat 100 et adapté pour identifier en temps réel la couleur d'illumination de chaque ligne.
Abstract:
A Video-on-Demand Server architecture (100, 200, 300) transmits a plurality of pre-coded programs having different bit rates across a fixed bandwidth channel (11). For each program, a generator (120-12P-1, 110, 210) generates a plurality of different bit rate representations for each program. Each generator also provides control information at each of a plurality of successive time windows T for each bit rate representation. The control information provides a bit rate and a quality measure during each time window T. The control information enables a statistical multiplexer (16, 160, 260) to select a bit rate representation for each program during each time window T to maximize the quality of the selected representations while not exceeding the total available channel capacity.
Abstract:
The resistance against recording defects (D) of a write-once optical disk is enhanced allowing realtime recording and playback of data streams with a single speed disk drive. A data stream is recorded in data blocks (B0, B1, ...) on the optical disk. An error correction block (P) for one or more data blocks is generated and written on the same optical disk during recording. A spare data area (S) is kept blank on the storage medium and used for storing a defect data block reconstructed by using the error correction block.