Abstract: An data processing apparatus for performing signal processing on an input signal having a finite length. The apparatus performs a wavelet transform to divide the input signal into sub-bands for signal processing. An extrapolation process is performed to limit transform artifacts at the leading and trailing ends of each sub-band of the finite length signal. An extrapolation processing discriminator is used to determine whether the extrapolation process satisfies a complete reconstruction condition, whereby an output signal will be a substantial reconstruction of the input signal. The extrapolation process is chosen from among four different loopback methods.

Abstract: A wavelet encoding method and apparatus and a wavelet decoding method and apparatus for pictures. A input picture is split into plural tile pictures and wavelet transform is applied to input pictures on the tile picture basis to effect the encoding. For wavelet transform, pixels lying on the outer side of a given tile picture are symmetrically expanded and convolved. This enables marked memory capacity reduction, while eliminating constraint conditions for the number of times of wavelet splitting.

Abstract: The present invention is a video data recording apparatus, a video data recording method, a video data reproducing apparatus, a video data reproducing method, a video data recording and reproducing apparatus, and a video data recording and reproducing method that can be interfaced using an MPEG2 elementary stream and that allow an input elementary stream to be recorded to a record medium and reproduced therefrom. According to the present invention, a recording side stream converting means is disposed. The recording side stream converting means converts an input elementary stream into a device stream that is a stream suitable for a record medium. A recording means performs a recording process for the converted device stream and records the record data to the record medium. A reproducing means reproduces record data recorded on the record medium as a device stream. According to the present invention, a reproducing side stream converting means is disposed.

Abstract: A shuffling table memory has a shuffling table written from an external memory through a path. The external memory stores a plurality of shuffling tables corresponding to the formats of video data to be shuffled. One shuffling table selected according to the result of format determination is stored in the shuffling table memory. The shuffling table memory receives an IDi separated from the input data as an address and outputs a converted address IDo. The address IDo generated by the shuffling table memory is used as a write address for writing data into a data-accumulation memory. With the read address sequentially changing, shuffled data is read from the data accumulation memory.

Abstract: A disk recording/reproduction device ideal for processing audio-visual data streams requiring real-time characteristics. A disk device has an operating mode ideal for recording and reproduction of motion image and audio data requiring real-time continuity by limiting the time needed for error processing, and the host incorporating the disk device can easily monitor the real-time continuity. The host can specify the urgency of individual recording and reproduction instructions to the disk so that control of real-time continuity can be actively implemented in better detail. A means for assigning a total number to a plurality of simultaneously recorded or reproduced data streams as well assigning individual data stream numbers allows informing the disk device of the throughput required by the host.

Abstract: An additional information transmission method for transmitting an information signal and additional information in the form of an electronic watermark. The electronic watermark information is generated and superimposed on the information signal for transmission so as to form a superimposition/non-superimposition pattern corresponding to first additional information and transmitting second additional information on the information signal such that one value of one-bit information is expressed by a period in which electronic watermark information is superimposed on the information signal and other values of one-bit information are expressed by a period in which the electronic watermark information is not superimposed.

Abstract: In order to secure the resources on a bus positively and execute the data transmission during a time zone set by a timer of a plurality of electronic equipment connected by a serial bus, a reserve operation setting unit 22 inputs reserve operation setting information for setting a predetermined equipment connected to the bus in a predetermined state at a predetermined time. A reserve operation execution unit 23 sets a predetermined equipment connected to the bus in a predetermined state at a predetermined time based on the information input from the reserve operation setting unit 22 or the information stored in a reserve operation storage unit 22. The reserve operation storage unit 24 stores the information for setting a reserve operation input to the reserve operation setting unit 22. A bus resources reservation unit 25 acquires or releases the bus resources based on the input to the reserve operation setting unit 22 or the storage in the reserve operation storage unit 24.

Abstract: The invention relates to an improved channel estimation technique for coherent CDMA systems. Traditionally channel estimators for coherent CDMA systems are based on a correlator. However, channel estimators based on this traditional approach are subject to the effect interpath interference, which caused performance to be degraded. The CDMA channel estimation technique eliminates the effects of interpath interference by using a cancellation technique. Therefore, estimate values output from a path searcher (30) respectively passed through a scaling unit (31) and a cross correlation calculator (32). The cross correlation term can be easily calculated since the path delay and the spreading sequence are known at the receiving side. The output signals of the cross correlation calculator (32) are respectively subtracted from the original estimation value {circumflex over (&agr;)}0 in a subtracting unit (33) to generate an improved estimation value to be supplied to an input terminal (27) of a RAKE combiner (26).

Abstract: An editing device and an editing method which greatly improve the efficiency of editing work. The editing device includes first displaying means for displaying a plurality of images by converting the images to time lines on the basis of time codes added in synchronicity with respective images on an identical time base respectively, second displaying means for displaying images corresponding to the time codes designated on the time bases among the respective time lines, and the third displaying means for displaying an image of a desired part sequentially designated, on the time bases, from the respective images, as a clip respectively.

Abstract: A video processing apparatus according to the present invention includes edge detecting means for detecting an edge direction of an image, coefficient selecting means for selecting a coefficient based on the edge direction detected by the edge detecting means, and filter means for filtering a frequency band by using a frequency characteristic corresponding to the coefficient selected by the coefficient selecting means, wherein the number of pixels of the image is enlarged twice.

Abstract: A differential microphone (50) produces a differential pair of output signals which are applied by a differential analogue amplifier (52). The amplified differential signals are converted to 1-bit form by a pair of analogue to digital converters (54, 55) and are combined in a 1-bit Delta Sigma Modulator.

Abstract: An apparatus and method to detect the boundary between a recorded region and a recordable region. When data is recorded on fixed length packets, with each packet comprised of a plurality of blocks, the boundary is determined by a block in which a reading error has occured and that is located at a position distant from a track head by an integral multiple of the packet length. Alternatively, when the blocks are identifiable from among a plurality of block types, the boundary is determined by using the block type of the eroneous block.

Abstract: An image signal encoded for compression using a wavelet transform as a transform system is to be decoded at a resolution corresponding to an optional rational number. To this end, the wavelet decoding device includes an entropy decoding unit 1 for entropy decoding an encoded bitstream 100, a dequantizing unit for dequantizing the quantized coefficients 101 to transmit transform coefficients 102, a transform coefficient back-scanning unit 3 for scanning the transform coefficients 102 in a pre-set fashion to re-array the transform coefficients, and an inverse wavelet transform unit 4 for inverse transforming the re-arrayed transformation coefficients 103 to furnish a decoded image 104. The inverse wavelet transform unit 4 adaptively constitutes an upsampler, a downsampler and a synthesis filter in dependence upon a pre-set resolution conversion factor.

Abstract: A method of transmitting a transport stream over an IEEE 1394 Serial Bus comprising stripping out of the transport stream identifiable unrequired data so as to reduce the bandwidth of the transport stream, a digital multi-media receiver for transmitting a transport stream to a Conditional Access Module on an IEEE 1394 Serial Bus including a reader for reading the contents of the transport stream and identifying data which is not required for processing by a Conditional Access Module, a stripper for stripping out at least some of the identified unrequired data from the transport stream and a transmitter for transmitting all of the remaining data of the transport stream which has not been stripped and a network of digital multi-media devices connected by means of an IEEE 1394 Serial Bus whereby a first device sends such a stripped transport stream to a second device over the IEEE 1394 Serial Bus.

Abstract: To obtain good approximate solutions of a combinatorial optimization problem such as traveling salesman problem and to enable its processing apparatus in form of massively parallel exclusive devices, an information carrier corresponding to the distribution of a plurality of points given on an n-dimensional space (n is an integer not smaller than 2), and time development and time reversal of the information carrier are used to process the information. The information carrier may be the density of particles or optical intensity corresponding to the distribution of the given points, and a diffusion process of the particles or a defocusing process is used as changes with time. The traveling salesman problem is solved by using this method.

Abstract: To provide a serial interface circuit capable of converting a large volume of data into packets based on a predetermined standard for transmission and reception and capable of performing smooth transmission and reception processing, which comprises a transaction layer circuit serving as a data processing circuit to which a storage device is connected, which reads data of the storage device, adds a self-designating transaction label, and transmits the data as a transmission asynchronous packet to a serial interface bus BS and, when transferring data of another node to the storage device, generates a request packet to which it had added a self-designating label and transmits the same to the serial interface bus BS, receives a response packet for this request packet from the another node, takes out a data portion from the response packet, and transfers this to the storage device.

Abstract: A digital audio signal processor processes digital audio signals having a first sampling rate S1. The processor has a multiplicity of manually adjustable controls (403) for setting desired parameters of signals to be processed. Sampling means (404) sample each control (403) setting at a second sampling rate S2 less than the first rate S1 to determine the settings thereof. Applying means (401) responsive to the sampling means apply the sampled settings to the signals. For each control the applying means determines the difference of successive samples of setting and applies to the signal, subject to control by that control, increments of setting each increment being a predetermined fraction 1/n of the said difference at a rate nS2 which is n times the said second sampling rate S2.

Abstract: A recording medium library apparatus made up of a combination of units and capable of readily outputting information representing the configuration and readily collecting management information. A library controller of a recording medium library apparatus recognizes the configuration of a library. Based on the information on the recognized configuration, a status monitoring view showing the actual arrangement of consoles is provided on a display. Part of the statuses of the sections are displayed on the status monitoring view. The library controller collects system information as management information sorted according to the functions or structural part of the library for each function or structure block element and rearranges the collected system information into data in a form which can be outputted all at a time, and the data is recorded as a system information file on, for example, a hard disk.

Abstract: A video processing apparatus according to the present invention includes edge detecting means for detecting an edge direction of an image, coefficient selecting means for selecting a coefficient based on the edge direction detected by the edge detecting means, and filter means for filtering a frequency band by using a frequency characteristic corresponding to the coefficient selected by the coefficient selecting means, wherein the number of pixels of the image is enlarged twice.

Abstract: Video decoder decodes pictures B0, B1, I2, B3 of GOP-3 which have been read out from a recording medium along with recording of new compressed picture data onto the recording medium thereafter to further decode pictures B4, P5, B6 . . . to restore them. Namely, it is impossible to restore, only by the compressed picture data of pictures B4, P5, B6 . . . , these pictures corresponding thereto. For this reason, picture data of pictures B4, P5, B6 . . . which have not been caused to be missing by recording of new compressed picture data are re-encoded to generate new GOP. Thus, the video decoder decodes and restores those non-missing pictures on the basis of the pictures B0, B1, I2, B3 within the new GOP.