Abstract: A multichannel display data generating apparatus for generating data for displaying AV data on a multiscreen has a plurality of screens for displaying AV data of a plurality of channels, said apparatus comprising: input means for inputting AV data of a plurality of channels being transferred using a transport packet of a transport stream; a smaller number of PCR extracting means for extracting in a time-sharing mode the PCR of a plurality of channels displayed on said plurality of screens than the number of said plurality of screens; the same number of PLL means for establishing PLL synchronization by using said extracted PCR as the number of said plurality of screens; the same number of STC (system time clock) counter means for counting the times of the channels displayed on said plurality of screens by using the oscillation frequency of said PLL means as the number of said plurality of screens; AV decoding means for AV-decoding the AV data of the channels displayed on said multiscreen in AV synchronizati

Abstract: A multichannel display data generating apparatus displays AV data on a plurality of screens. A channel displayed on one of the screens is displayed without a program clock reference.

Abstract: A multichannel display data generating apparatus for generating data for displaying AV data on a multiscreen has a plurality of screens for displaying AV data of a plurality of channels, said apparatus comprising: input means for inputting AV data of a plurality of channels being transferred using a transport packet of a transport stream; a smaller number of PCR extracting means for extracting in a time-sharing mode the PCR of a plurality of channels displayed on said plurality of screens than the number of said plurality of screens; the same number of PLL means for establishing PLL synchronization by using said extracted PCR as the number of said plurality of screens; the same number of STC (system time clock) counter means for counting the times of the channels displayed on said plurality of screens by using the oscillation frequency of said PLL means as the number of said plurality of screens; AV decoding means for AV-decoding the AV data of the channels displayed on said multiscreen in AV synchronization

Abstract: A video display unit according to the present invention is provided with a multipurpose arithmetic unit for generating display data by carrying out at least one operation within one period of the pixel clock and an instruction sequencer for describing as instructions the display data and the operational contents to be inputted to this, and by implementing the described instructions while synchronizing to the display clock, picture up/down scaling processes as well as a blending process with the OSD are realized. Thereby, it is not necessary to provide a dedicated circuit for each of required specifications such as in a conventional unit, and by rewriting instructions within the instruction sequencer, it is possible to cope with a plurality of display specifications.

Abstract: In an effective display area, an additional information recognizing part 203 recognizes a standard of a broadcast wave, refers to a ROM 212 and selects a target value, and provides an internal clock of a video data reading part 205 and an internal clock of an OSD data reading part 206 with the target value. At a retrace interval, on the other hand, the additional information recognizing part 203 notifies an additional information synthetic position deciding part 210 of the standard of the broadcast wave. The additional information synthetic position deciding part 210 selects from a ROM 211 a target value for reading the additional information applicable to the notified standard, and outputs the target value to an additional information reading parts 207. When the standard of the broadcast wave is changed, target values corresponding to the changes are responsively selected from the ROM 212 and the ROM 211.

Abstract: A coding method comprises a hierarchical coding step of performing hierarchical coding for data to be coded to generate first and second code sequences, each comprising a plurality of code layers; a storage control step of storing the first and second code sequences in a storage region of a code storage means having successive addresses, respectively from opposed ends of the storage region, according to priority given to the code layers; and a priority judge step of storing a code layer in either of the first and second code sequences, which code layer has the highest priority at present, prior to the other code sequence, when an overlap occurs in the storage control step. Therefore, the code layers are stored in the storage element having limited capacity with high efficiency, whereby the utilization efficiency of the storage capacity is improved.

Abstract: A real-time image recording/reproducing apparatus which receives an image signal and compresses the image signal so as to produce compressed data which the apparatus stores. The apparatus judges whether or not sufficient empty space for storing the compressed data exists. The apparatus stores the compressed data if sufficient empty space exists, or allocates required empty space by releasing oldest data among the stored compressed data if sufficient empty space does not exist. The apparatus receives a replay instruction and expands the compressed data in response to the replay instruction so as to produce image data, and outputs the image data.

Abstract: According to a method and a system of the present invention, a gray-level data is generated from a binary image while reducing the vertical brightness transition, and a display with a reduced flicker is enabled in an interlaced scanning system. A filtering operation is conducted with respect to each of the pixels in a dot matrix by using the data of each pixel and the dot matrix data of the pixel adjacent to the pixel in a vertical direction, thereby generating a gray-level data and writing the data into a frame memory. A display with a reduced flicker may be conducted by transforming the gray-level data into a predetermined set of colors consisting of a foreground color, a background color, and an intermediate color thereof.

Abstract: A system for managing a storage medium such as a write-once type optical disk in which addresses of logical blocks are assigned in accordance with the kinds of information to be recorded, and the number of physical sectors necessary for recording or reproduction on the basis of the logical block addresses. The number of physical sectors to be used can be reduced, improving the efficiency of the storage medium. Two or more kinds of information can be mixedly recorded in one physical block. The OS can manage the physical blocks as logical blocks in which the two or more kinds of information are separately recorded.

Abstract: In an effective display area, an additional information recognizing part 203 recognizes a standard of a broadcast wave, refers to a ROM 212 and selects a target value, and provides an internal clock of a video data reading part 205 and an internal clock of an OSD data reading part 206 with the target value. At a retrace interval, on the other hand, the additional information recognizing part 203 notifies an additional information synthetic position deciding part 210 of the standard of the broadcast wave. The additional information synthetic position deciding part 210 selects from a ROM 211 a target value for reading the additional information applicable to the notified standard, and outputs the target value to an additional information reading parts 207. When the standard of the broadcast wave is changed, target values corresponding to the changes are responsively selected from the ROM 212 and the ROM 211.

Abstract: In an effective display area, an additional information recognizing part 203 recognizes a standard of a broadcast wave, refers to a ROM 212 and selects a target value, and provides an internal clock of a video data reading part 205 and an internal clock of an OSD data reading part 206 with the target value. At a retrace internal, on the other hand, the additional information recognizing part 203 notifies an additional information synthetic position deciding part 210 of the standard of the broadcast wave. The additional information synthetic position deciding part 210 selects from a ROM 211 a target value for reading the additional information applicable to the notified standard, and outputs the target value to an additional information reading parts 207. When the standard of the broadcast wave is changed, target values corresponding to the changes are responsively selected from the ROM 212 and the ROM 211.