Abstract:
In order to record and replay teletext signals using a VHS video recorder the teletext data is converted into a multilevel (quarternary) code at a lower (half) data rate. On record an encoder (7) takes teletext data from a RAM (6) and encodes it as a multilevel code at a lower data rate and passes it to the normal luninance processor (10) of the VCR. On playback the multilevel code is replayed and fed to a decoder (13) which converts it to binary code at the standard teletext data rate. This is stored in the RAM (6) and then read out into a teletext decoder (14) where clock run-in and framing code are added before it is combined with the CVBS in a multiplexer (15) and passed to an output 16.
Abstract:
The invention relates to editing of video information signals recorded on a record carrier, such as an optical record carrier (3). The editing is carried out in an internal memory of the edit apparatus. Editing results in an edited stream of information, which includes a bridging fragment. Prior to recording the bridging fragment on the record carrier, the edited stream of video information around the edit point is made visible by retrieving the edited stream of video information directly from the internal memory, so as shorten the time required to make the edited stream of information visible on a display screen.
Abstract:
A radio communication system has a random access channel for the transmission of data (214) from a secondary station to a primary station. Such a channel is intended for use by secondary stations having data (214) to transmit to a primary station while not actually engaged in a call. By enabling access requests (202) to be transmitted with a range of time offsets relative to the boundary (302) of their time slot, a much greater number of degrees of freedom is available to a secondary station requesting access to a random access channel. This enables significantly improved efficiency of resource allocation by increasing the amount of information transmitted to the primary station by the access request (202).
Abstract:
An electronic device (10), such as a portable telephone or PDA, has a display (12) in the form of a pixel display with an image deflection system (8) overlying the display (12). The display is controlled to provide at least two independent display images which, when displayed through the image deflection system (8), are individually visible from different viewing positions relative to the screen. Suitably, the image deflection system (8) comprises a lenticular screen with the lenticles (24) extending horizontally or vertically across the display (12) such that the different views may be seen through tilting of the device.
Abstract:
A method of manufacturing a TFT (10) is disclosed comprising source (8) and drain (8null) electrodes joined by a semiconductor channel (6) formed from a semiconductor layer (4), a gate insulating layer (7) and a gate electrode (8null). The method comprising the steps of applying a foil (2) comprising a crystallisation enhancing material (CEM) and depositing the semiconductor layer (4) over a supporting substrate (1); and heating the semiconductor layer (4) so as to crystallise the semiconductor layer (4) from regions exposed to the CEM of the foil (2). The method may further comprise the step of providing a patterned barrier layer (3) between the foil (2) and the semiconductor layer (4) wherein the semiconductor layer (4) is crystallised from regions exposed through vias in the barrier layer (3) to the CEM of the foil (2). Also disclosed is a TFT (10) manufactured by the same, and an active matrix device (20) comprising a row and column array of active elements (22) wherein each element (22) is associated with such a TFT (10) connected to corresponding row (24) and column (23) conductors.
Abstract:
A mouse (20) comprises first (24) and second (28) projections on the bottom surface of the mouse housing. The second projections (28) only come into contact with the mouse mat on application of pressure by the user, so as to assist in holding the mouse still, for example during double clicking operations.
Abstract:
A system for interpolating half-pels from a pixel array stores pixel data for each pixel in one of a plurality of different memory areas based on a location of the pixel within the pixel array, and determines a specific address in each one of the plurality of memory areas based on a target pixel in the pixel array. The system determines each specific address based on a location of the target pixel in the pixel array. The system also reads, from each the plurality of memory areas, pixel data from determined specific addresses and determines a value of at least one half-pel for the target pixel based on the read pixel data.
Abstract:
A format for the recording of trick play signals is proposed in which trick play segments comprising sync blocks of information of a trick play signal are recorded in groups of p successive tracks. At least first and second trick play signals are recorded on the record carrier. The first trick play signal is meant for reproduction in a reproduction apparatus at a reproduction speed n1 times the recording speed with which the trick play signals are recorded on the record carrier. The second trick play signal is meant for reproduction in the said reproduction apparatus at a reproduction speed nulln1 times the recording speed. The first trick play signal is recorded using a first head having a first azimuth angle and the second trick play signal is recorded using a second write head having a second azimuth angle different from the first azimuth angle.
Abstract:
In the method of manufacturing a circular optical storage disc (10), an extension body (21) is present around the substrate (11) of the optical disc (10) during the spin coating of cover or spacer layers (15). The extension body (21) may consist of one or several pieces. The outer periphery (23) has a circular or polygonal shape. The inner periphery of the extension body is in close circumferential contact with the periphery (13) of the optical disc substrate (11). The surface (22) of the extension body is substantially flush with the surface (12) of the substrate (11) of the optical disc in order not to impede the flow of spin coating liquid during spin coating. The raised edge (16), which usually forms at the periphery (13) of the substrate (11) is now transferred to the outer periphery (23) of the extension body (21). After the coating operation the extension body (21) is removed. By choosing a surface (22) to which the coating (15) adheres poorly, reuse of the extension body (21) is facilitated. The manufactured optical storage disc (10) has no or a very small raised edge (16), and the method causes no extra birefringence.
Abstract:
Method of recording a series of ordered real-time information signals, such as audio/video information, on a disc like recording medium, such as an optically readable disc. The method comprises recording of contiguous sequences of detectable marks, each sequence representing a successive series of information signals of an A/V program, in a distributed manner across the recordable area of the disc like recording medium. Between the recorded sequences, preferably free space remains available for recording contiguous sequences of information signals of another A/V program in a same distributed manner. In an embodiment, a logical address space is divided in successive allocation areas, each allocation area used for subsequently recording a specific sequence of an A/V program.