Abstract: A plurality of data items are received in each frame period. A digital signal processor (DSP) checks the flag corresponding to each data item in each frame period before the DSP applies processing to the received data. When the checked flag allows the corresponding data item to be processed, the process is performed. When the execution of the process is finished, the flag is reset. When all the flags are reset, the DSP enters a sleep state.

Abstract: An apparatus for receiving digital information signals, including a signal receiving portion for receiving a digital information signal, and for transmitting digital data composed of a series of transmission frames each divided into a plurality of segmental periods called symbols and including a reference Symbol for synchronization, a reference Symbol data extracting portion for extracting data transmitted through a reference Symbol from each of transmission frames of digital data obtained from the received digital information signal, a frequency offset detecting portion for obtaining a first frequency offset detection output based on the received digital information signal a strength of, data transmitted through the, reference Symbol at every transmission frame and obtaining also a second frequency offset detection output based on with the received digital information signal and a strength of specific data included in data transmitted in each of the plurality of Symbols, and a frequency synchronizing control

Abstract: A pump includes a pump chamber, a reciprocally, driven body that is moved to perform a pumping function by changing the capacity of the pump chamber, and a driving mechanism that reciprocally moves the driven body. The driving mechanism includes a rotating plate which is fixed to an output shaft of a motor and has an annular groove therein. A ball is sandwiched between an annular groove of a driving plate and the annular groove of the rotating plate. When the rotating plate begins rotating, the ball moves in the annular grooves and changes the inclined direction of the driving plate, thus, causing the driven body to reciprocate.

Abstract: There is provided a novel lithium nickel complex oxide represented by the general formula:Li.sub.y-x1 Ni.sub.1-x2 M.sub.x O.sub.2wherein M represents one selected from the group consisting of Al, Fe, Co, Mn and Mg, x=x.sub.1 +x.sub.2, O<x.sub.1 .ltoreq.0.2, O<x.sub.2 .ltoreq.0.5, 0<x.ltoreq.0.5, and 0.9.ltoreq.y.ltoreq.1.3, and wherein the crystals have been sufficiently developed and are highly purified, and a positive electrode active material for a secondary battery whose stability of high discharge capacity is excellent.

Abstract: To interpolate data produced in the course of transmission or recording/reproduction of .SIGMA.,.DELTA. modulated 1-bit digital data an interleaver distributes input contiguous 1-bit audio data over a range broader than can be typically interpolated, an error detector performs 4-bit-width detection on the distributed data transmitted over a transmission channel, a deinterleaver deinterleaves the distributed output data for converting the distributed output data into the contiguous 1-bit audio data that existed prior to interleaving, at the same time as it reallocates the error detection information detected by the error detector in corresponding bit locations, and an interpolator specifies error data in output data of the deinterleaver using the error detection information produced by the error detector for interpolating the specified error data.

Abstract: An apparatus for detecting denaturation of a nucleic acid, including: denaturation condition controlling means for controlling condition of denaturation under which a double-stranded nucleic acid is separated into a first single-stranded nucleic acid and a second single-stranded nucleic acid; excitation light irradiation means for irradiating the double-stranded nucleic acid before denaturation, and the first single-stranded nucleic acid and second single-stranded nucleic acid after the denaturation; fluorescence detection means for detecting fluorescence emission based on the excitation light irradiation; and processing means for receiving, storing and processing a signal supplied from the fluorescence detection means.

Abstract: An apparatus for detecting denaturation of a nucleic acid, including: denaturation condition controlling element for controlling condition of denaturation under which a double-strand nucleic acid is separated into a first single-strand nucleic acid and a second single-strand nucleic acid; excitation light irradiation source for irradiating the double-strand nucleic acid before denaturation, and the first single-strand nucleic acid and second single-strand nucleic acid after the denaturation; fluorescence detection monitor for detecting fluorescence emission based on the excitation light irradiation; and processing element for receiving, storing and processing a signal supplied from the fluorescence detection monitor.

Abstract: A magnetic recording/reproducing apparatus in which the reproduced audio data is processed and is recorded in every N cycles during which the reproducing magnetic heads scan a pair of recording tracks. The recording magnetic head is positioned behind the reproducing magnetic head for 8.5+4N track pitch, so that a write-after-read processing is provided. Using the recording head positioned behind the reproducing head, the reproduced audio data is stored in a memory for time base compression or expansion, and in a multichannel mode the reproduced audio data is read out and recorded performing write-after-read processing even if the number of channels is changed. The 2.sup.n channel audio data is recorded using interleave processing in every N cycles of the heads forming a pair of recording tracks so that even if the cycle in which a pair of recording tracks is not an integral multiple of the sampling cycle, the plural channels of audio data can be recorded and/or reproduced.

Abstract: A digital signal processing circuit for processing and recording data at various selectable rates, having an input/output circuit for receiving and outputting a digital signal; a recording circuit for generating a recording signal based on a digital signal received by the data signal processing circuit; a playback circuit for retrieving recorded data; and a demodulation circuit for demodulating retrieved data. The processing and recording rates are determined by control data supplied to the circuit either via an operator or from a recorded signal.

Abstract: In a magnetic recording and/or reproducing apparatus, when the reproduced audio data is processed in the reproduction system and the record system and is re-recorded in every cycle of N times the cycle during which the reproducing magnetic head scans a pair of recording tracks, the recording magnetic head is positioned behind the reproducing magnetic head for 8.5+4N track pitch so that the reproduced audio data can be re-recorded on the original recording track, therefor a write-after-read processing can be realized. In the recording magnetic head positioned behind the reproducing magnetic head for the specific track pitch, the audio data is stored in a memory circuit for time base compression and expansion with a multichannel mode such as to record the reproduced audio data at the same part on the magnetic tape, so that a magnetic recording and/or reproducing apparatus which enables to perform the write-after-read processing can be obtained with simple construction if the number of channel is switched.

Abstract: A decoding apparatus in which for plural symbols arranged in a matrix fashion first and second error correction codes are encoded for each of the plural symbols respectively arranged in a first direction and in a second direction and in which input data is transmitted in the first direction. The decoding apparatus includes a first memory for writing input data, an error detector for detecting an error of the input data that is written into the first memory based on the first error correcting code and for generating error data from the first error correction code. A second memory is provided for writing error data of the first error correction code and an error corrector is provided for sequentially executing error corrections of the first and second error correction codes for the input data that is written into the first memory by using the error data of the first error correction code that is written into the second memory.

Abstract: An impeller pump which can be connected for use with hot-water serving systems. By the rotation of an impeller, liquids are sucked through a suction port which is connected with a container of the hot-water serving system and discharged through a discharge port for the intended supply. A guide port is provided nearby the suction port to let escape bubbles from the pump chamber, thereby assuring that the hot-water supply capacity performance is kept constant.

Abstract: In a magnetic recording and reproducing apparatus, an audio signal and a video signal are assigned to first and a second channels of an ordinary magnetic recording and reproducing apparatus in respectively, and recorded at a transmission rate twice that of the usual rate, so that it is possible to record an audio signal without tone quality degradation to record a video signal together with the audio signal.

Abstract: In a multi-channel data recorder, digital data for recording is converted to words of reduced length, and data for identifying the data channel is added to the reduced-length data words to produce a signal having a word length compatible for recording by a conventional data recorder.

Abstract: A digital audio tape recorder signal processor whose signal processing period is Td performs signal processing for recording 2-channel PCM signals having a sampling frequency of Fs. A circuit is provided for compressing the time-base of 4-channel PCM signals by one-half to form 2-channel time-base-compressed PCM signals in which the first and second channels are time-divided and multiplexed and the third and fourth channels are time-divided and multiplexed, so that when the time-base-compressed PCM signal is supplied to the signal processor, the signal processor is operated with a sampling frequency of 2Fs and the signal processing period is changed to 1/2 Td.

Abstract: A digital signal reproducing apparatus for reproducing a digital signal from a recording medium on which a digital signal, including coded address data to identify a data block, is recorded includes a reproducing circuit for reproducing the recorded signal, a memory for storing the reproduced signal, an address extracting circuit for taking out the address data from the reproduced signal, a circuit for forming a reference address from the extracted address data, a comparator for comparing the extracted data and the reference address, and a writing circuit for selectively writing the reproduced signal into the memory in response to the output from the comparator.

Abstract: A digital signal processing circuit has a memory circuit to store reproduction data and recording information, a reproduction signal processing circuit for demodulating a reproduction signal to thereby obtain the reproduction data and the recording information and for storing the reproduction data and the recording information into the memory circuit, an error detecting and correcting circuit for executing an error detecting and correcting process on the reproduction data, and a data output circuit for outputting the reproduction data stored in the memory circuit on the basis of the recording information.

Abstract: A digital signal processing circuit for use in different types of digital audio tape recorder that record a standard track format using different arrangements of rotary drum and the like. The circuit provides a record signal having a transmission speed and timing switched in accordance with the structure of the rotary drum and the like.

Abstract: A rotary head apparatus of the type which reproduces digital signals recorded in one or more oblique tracks on a recording medium, the digital signals being formatted such that one frame of the digital signals is formed of n blocks, each block having added to it a block address and a frame address, wherein the apparatus compares the frame address from the reproduced signal with a reference frame address which varies with a reference period, and the transporting speed of the recording medium is then controlled so as to make the difference between the reproduced frame address and the reference frame address constant.

Abstract: In an apparatus for reproducing a digital signal wherein a signal is read by a plurality of reproducing rotary heads which trace a track with an interval narrower than the interval of tracks formed on a tape, a wrap angle with which a tape is wrapped around the periphery of a rotary drum to which the rotary heads are attached is selected to be less than 360.degree./n with respect to the number n (n is an integer) of rotary heads, the rotary heads are rotated at a speed twice the normal rotational speed of the heads, the demodulated digital signal is stored in a memory corresponding to a frame address and a block address detected from the reproduced digital signal, and then the digital signal stored in the memory is read out therefrom in a predetermined order, whereby an apparatus for correcting the tracking of the tape by the rotary heads can be eliminated.