Abstract: A carrier reproduction circuit comprising a complex multiplier circuit for generating a first signal by detecting a difference between a received signal and a signal fed back at a Costas loop circuit, a loop filter circuit for generating a second signal by processing the first signal by using a first integration loop containing a first delay circuit for giving one-symbol's worth of a delay, and an NCO circuit for feeding back the signal generated by processing the second signal by using a second integration loop containing a second delay circuit for giving one-symbol's worth of delay toward the complex multiplier circuit and switching the loop filter circuit and the NCO circuit to a state 12 symbols before in accordance with a TMCC detection signal and thereby capable of performing the carrier reproduction of the received signal at a high speed and with a high precision.

Abstract: For an interactive operation with a receiver which receives unidirectionally broadcast data, a signal of a picture including an object are multiplexed with information relevant to the object with a visible symbol to which reference is made when selecting the object, being presented in the picture correspondingly to the object. The relevant information is transmitted by a unidirectional broadcasting system in which the information is displayed when the object is selected referring to the symbol. The relevant information is displayed by making a selection between a channel from a first tuber (2) and a one from a second tuner (3) by means of a remote controller (1) with reference to the symbol corresponding to the object displayed on a color CRT (7).

Abstract: A disc cartridge housing a disc-shaped recording medium in a main cartridge body portion is disclosed. The disc cartridge includes a main cartridge body portion having a circular medium housing section for rotationally housing a disc-shaped recording medium, a recording and/or reproducing opening for exposing at least a portion of the disc-shaped recording medium to outside and a driving opening for allowing intrusion of a rotating driving unit adapted for rotationally driving the disc-shaped recording medium. The disc cartridge also includes a shutter mechanism having a shutter member rotated along the major surface of the main cartridge body unit in a region provided with the medium housing section to open/close the recording and/or reproducing opening and a plurality of cartridge supporting portions at plural corner regions of larger area outside a region provided with the medium housing section of the main cartridge body unit.

Abstract: The invention relates to a data recording apparatus in which a shuffling process for enabling a reproduced image to be easily seen in a high speed reproducing mode of a digital VTR is performed to data to be recorded. As a recording unit to perform the shuffling process, (16×16) macroblocks are set. A process for forming line segments to draw cross lines adapted to divide the recording unit into four equal parts and deleting line segments among four macroblocks around a cross point of the cross lines is repetitively performed until a curve obtained by tracing edges of the formed line segments passes through all of the macroblocks. Further, the line segments are concealed at a position where the curve passes through the same macroblock twice, thereby allowing the curve to pass through the same macroblock once. The order of the recording positions of sync blocks on a tape is specified by the order of drawing the curve P2.

Abstract: The object of the present invention is to enable to prevent an erroneous erase of a data stored or writing another data on the data as well as to enable to easily switch an erroneous erase prevention switch. A command generator 35, upon reception of a register instruction for checking a state of a memory card 2 received via an S/P & P/S sequencer, sets a state of an erroneous erase prevention switch 23 in a register and transmits this register content via the S/P & P/S sequencer 31 to a host computer. According to the register content from the memory card, the host computer decides whether a write protect is ON and executes a write inhibit processing when the write protect is ON.

Abstract: A reproducing apparatus and method, the method comprising the steps of comprising recording a plurality of files and number-of-reproduction-times limitation information thereof, selecting a desired file from the plurality of files stored in the memory, and comparing whether the number-of-reproduction-times limitation information allows for reproduction of the selected file. The method further comprises the steps of counting the reproduced elapsed duration of the selected file and comparing whether the reproduced elapsed duration exceeds a predetermined value. The number-of-reproduction-times limitation information stored in the memory is edited when the reproduced elapsed duration exceeds the predetermined value to reduce the number of times the selected file may be subsequently be reproduced.

Abstract: The invention relates to a coding apparatus for embedding second data into first data without deteriorating the first data and a decoding apparatus for decoding coded data into original first data and second data without deteriorating those data. The invention provides a coding apparatus which has a memory for storing at least partial data of first data, and embeds second data into the first data by rearranging, according to the second data, the at least partial data of the first data that is stored in the memory. The invention also provides a coding apparatus for decoding coded data in which second data is embedded and at least partial data of the coded data has been subjected to rearrangement by using one of a plurality of rearrangement patterns. The decoding apparatus calculates correlation between adjacent data for each rearrangement pattern, and decodes the original first data and the second data according to a rearrangement pattern that is determined based on the correlation.

Abstract: A legged mobile robot having having at least a plurality of movable legs. This robot includes, in addition to a road surface touching sensor for confirming the ground touching state between the foot part and the road surface, a relative movement measurement sensor for measuring the relative movement between the foot part and the road surface. The robot has its operation controlled on the basis of the amount of relative movement between the foot part and the road surface, so that, when an offset is produced between the intended or scheduled trajectory and the actual trajectory, the operation may be controlled adaptively to execute the robot operation.

Abstract: A demodulator for modulated RF signals comprises a passive four port structure (1). The four port structure (1) has a first input (3) for supplying a modulated RF signal to be demodulated. A second input (2) is supplied with a RF signal from a local oscillator (21). Two output terminals are connected to power sensors (4, 5). The RF signal from the local oscillator (21) is supplied to the second input (3) of the four port structure (1) without being RF switched by an RF switch. The demodulator is particularly useful for modulation schemes with a finite number of magnitude states (nQAM modulation).

Abstract: An object of the present invention is to provide a multi-channel transmission system suitable for a digital broadcasting system that broadcasts television programs of many channels. Specifically, a selected one of television programs of a plurality of channels is supplied to an AV adjusting device. At this time, the selected television program is supplied to a monitor to allow recognition of its adjustment state. Since video signals and audio signals of television programs supplied from respective program supplying companies and program producing companies have different characteristics, they need to be adjusted to have common characteristics. Adjusted television programs and unselected television programs are supplied to a multiplexing section via routers.

Abstract: A modulation format identification device capable of realizing a practical receiver capable of identifying a modulation format of a received signal irrespective of its modulation format by a simple configuration, wherein provision is made of a phase lock detector group having a plurality of detectors provided corresponding to a plurality of modulation formats and with the received signals input in parallel thereto, counting a number of symbols in accordance with the modulation format for every detector, making a primary decision that the received signal has been modulated by the related modulation format when the count exceeds a constant threshold value, and outputting the results as lock detection flags and a logic circuit for exclusively selecting one modulation format upon receipt of the plurality of output results of the phase lock detector group, and a method of the same.

Abstract: Digital data recording apparatus includes a modulator for modulating a recording clock by a recording data. A reference voltage and a reference current in signal processing are set based on a reference clock having a multiple cycle of the cycle of the recording clock when the reference clock is supplied via a rotary transformer. A demodulator demodulates a modulation signal supplied via the rotary transformer to produce a demodulation signal, from which a recording signal is generated for recording on a recording medium. The demodulator obtains a modulation signal and an inverted modulation signal from which first and second saw-tooth wave signals are produced when the reference current is supplied. A mixer mixes the first and second saw-tooth wave signals, and the demodulation signal is obtained, based on the mixer output and the reference voltage.

Abstract: In a system in which a plurality of devices are connected by using a digital interface bus, in order to readily and easily cope with a specific device when the specific device malfunctions, the system, in compliance with a predetermined digital interface in which a predetermined identification code, a processing target discriminating code, a processing field prescribing code and processing executing information are set, includes means 12, 23 for recognizing the identification code, means 14, 22 for discriminating the processing target when the identification code is recognized and information processing means 16 to 19, 24, 25 for executing the processing in accordance with the processing field if the processing target contains its own device, wherein a defective device can be specified and repaired with ease.

Abstract: An information processing device, method thereof and a recording medium for easily switching input signals. A broadcast connection and a point-to-point connection are established between the receive device and the transmit device. When the user commands the canceling of the P.P. connection established for the receive device or the transmit device, only the broadcast connection remains established. In this state, the user receives signals on a receive device sent from the desired transmit device, and commands the restoring of the P.P. connection with the desired transmit device. The switching of input signals to the receive device is in this way performed by temporarily canceling the P.P. connection.

Abstract: An imaging system capable of easily and reliably adjusting the functions provided in the camera device and preventing mistaken adjustment of these functions. At a step S255, a specified parameter of a definition file or a user file is deleted or changed in values. A CPU judges whether or not an effective key is pressed. If the key is found to be pressed, the CPU proceeds to a step S256 and, if otherwise, the CPU dwells at a step S255. At a step S256, the CPU reads out image data of a parameter setting window from a disc drive based on the selected parameter or the definition file prevailing at a time point of pressing of the effective key. The CPU writes image data of the parameter setting window in a VRAM and causes a display image corresponding to the image data to be displayed on a display.

Abstract: A data network has a bus to which are connected a given node, a parent node and a child node; and arbitration over acquisition of the bus is performed before data is communicated between nodes. Transition to an initial state in a self identification phase, in which the given node is enabled to respond to an arbitration signal received from the parent node, is controlled by receiving at the given node a SELF_ID packet representative of the child node, as well as the arbitration signal (SELF_ID_GRANT) from the parent node, which would enable the given node to transmit to the parent node a SELF_ID packet representative of the given node. The initial state is assumed at the given node, from which the SELF_ID packet is permitted to be transmitted from the given node to the parent node, if reception of the arbitration signal from the parent node is completed at the given node.

Abstract: A command generator 35, upon reception of a register instruction for checking a state of a memory card 2 received via an S/P & P/S sequencer, sets a state of an erroneous erase prevention switch 23 in a register and transmits this register content via the S/P & P/S sequnecer 31 to a host computer. According to the register content from the memory card, the host computer decides whether a write protect is ON and executes a write inhibit processing when the write protect is ON.

Abstract: A solid generator allows multiple identical solids to be produced in respective ones of the tiles of a rectangular array of tiles. The tiles may occupy a whole frame, may be shifted relative to the edges of the frame. One row of tiles may be shifted relative to another row. The array may be passed across the frame. The tiles may occupy a part of the frame. A single ramp is defined by R=Ah+Bv_C where A, B and C are signed values, h=pixels along a line and v=lines. Values of A, B and C for various tiles are stored in registers C1, C2, C3, FB1, FB2, FB3 and used in relation to the individual tiles.

Abstract: A method of measuring horizontal frequency, which comprises the steps of resetting an 8-bit counter, which counts horizontal synchronous pulses separated from a video signal, at a time point corresponding to an edge of a vertical synchronous signal separated from the video signal, causing a data latch portion, which is operative to latch count data obtained from a 16-bit counter operative to count clock pulses having a predetermined frequency, to latch the count data obtained from the 16-bit counter at a time point corresponding to an edge of a bit output signal obtained from the seventh bit position of the 8-bit counter, detecting a period which corresponds to 128 times a horizontal period of the video signal based on a difference between counted values represented respectively by a couple of count data latched successively by the data latch portion, and measuring horizontal frequency of the video signal by calculating the horizontal frequency on the strength of the period corresponding to 128 times the hori

Abstract: An optical disk having a diameter less than 140 mm and, a thickness of 1.2 mm±0.1 mm, with a plurality of record tracks having data recorded thereon as embossed pits representing information and exhibiting a track pitch in the range between 0.646 &mgr;m and 1.05 &mgr;m; with the tracks being divided into a lead-in area, a program area and a lead-out area. The data includes table of contents (TOC) information recorded in a plurality of sectors in at least one TOC track and user information recorded in a plurality of sectors in user tracks. The user information is comprised of MPEG-compressed video data, which may exhibit any one of difference MPEG formats, and compressed audio data, which likewise may exhibit an MPEG format, a PCM format or the like. The TOC information includes addresses of start sectors recorded in the user tracks and also includes application table of contents (ATOC) information which identifies various parameters for accessing and using the user information.