Abstract: In order to satisfactorily transmit audio data of various formats through a transmission line, when data having a predetermined data length as a unit is transmitted by a predetermined format between devices connected to a predetermined transmission line, label data indicating a system of transmitted audio data is located at a starting portion of the data having the predetermined data length, sub-label data is located at an interval behind label data if necessary and data accompanying with audio data is located and transmitted, whereby a side which receives this data can easily identify a system of audio data or the like.

Abstract: An electromechanical transformation device has a magnetostrictive actuator and a driving device that drives the magnetostrictive actuator. The driving device drives the magnetostrictive actuator based on any one of the vibration signal and the audio signal or mixed signal of them.

Abstract: A delta-sigma modulator and delta-sigma modulation method according to the present invention are capable of ensuring a stable 1-bit signal having less distortion at the transition time from an audio signal reproduction state to soundless state while maintaining high sound quality during reproduction of an audio signal representing music or the like, and, at the same time, capable of maintaining high sound quality at the transition time from a soundless state to audio signal reproduction state.

Abstract: A signal encoding apparatus encodes one-bit signals of a plurality of n channels in a delta-sigma manner. The apparatus includes a phase modulator for phase-modulating the one-bit signals as original signals to add data of inverted phases to the one-bit signals. Information data related to the one-bit signals are added to the phase-modulated one-bit signal by rearranging the data of inverted phases based on a plurality of m channel units of the n channels, where n?m?2 and by exclusive ORing the information data and the phase-modulated one-bit signal data.

Abstract: A multiplexing device wherein a packet including a one-bit audio signal obtained by subjecting an analog audio signal to a delta sigma modulation process is multiplexed between a plurality of packets including a video signal having a variable bit rate by changing packet interval time information between the plurality of packets including the video signal having the variable bit rate.

Abstract: An apparatus for processing a digital signal that generates a one-bit output signal using a delta-sigma modulation apparatus, which includes a quantizer for quantizing an integrated output of a sixth integrator to generate a one-bit output signal that is send to respective integrators through an adder under feedback processing to output the one-bit output signal to the outside of a six-order Delta-sigma modulator, and a control unit for generating a control signal that controls the feedback loop signal from the quantizer so as to change the signal level of a signal component of the audio frequency band of the one-bit output signal. The control unit receives an integrated output from a second integrator being an input side integrator of the six-order delta-sigma modulator.

Abstract: The present invention provides a digital signal processing apparatus which can perform batch processing of mixing and gain controlling, etc., one time while the frequency characteristics of different filters are being mixed to a plurality of input signals in case of the re-quantization only once.

Abstract: A transmission apparatus, a reception apparatus, a transmission method, and a reception method, which are used for transmission and reception of encrypted digital data protected against illegal decryption of the encrypted digital data by a third party capable of inferring an encryption algorithm by decryption of a pattern having a known pre-encryption value, and a recording medium for recording the encrypted digital data.

Abstract: The present invention relates to a data transmission method used in the data transmission system. The data transmission method decrypts encrypted data, applies again encryption effective in the transmission system at transmission time so as to transmit the encrypted data from a sending side to a receiving side. The receiving side applies decryption effective only at the transmission time to the transmitted data to obtain clear text.

Abstract: A delta-sigma modulator and delta-sigma modulation method according to the present invention are capable of ensuring a stable 1-bit signal having less distortion at the transition time from an audio signal reproduction state to soundless state while maintaining high sound quality during reproduction of an audio signal representing music or the like, and, at the same time, capable of maintaining high sound quality at the transition time from a soundless state to audio signal reproduction state.

Abstract: The present invention relates to a technique of multiplexing a DSD signal with a video signal according to the clock signal generated on the basis of the attributes of the video signal.

Abstract: The present invention aims to realize linking of 1-bit signals having respective sampling frequencies that are different from each other and show a relationship of one equal to integer times of the other without noises.

Abstract: In order to satisfactorily transmit audio data of various formats through a transmission line, when data having a predetermined data length as a unit is transmitted by a predetermined format between devices connected to a predetermined transmission line, label data indicating a system of transmitted audio data is located at a starting portion of the data having the predetermined data length, sub-label data is located at an interval behind label data if necessary and data accompanying with audio data is located and transmitted, whereby a side which receives this data can easily identify a system of audio data or the like.

Abstract: In order to satisfactorily transmit audio data of various formats through a transmission line, when data having a predetermined data length as a unit is transmitted by a predetermined format between devices connected to a predetermined transmission line, label data indicating a system of transmitted audio data is located at a starting portion of the data having the predetermined data length, sub-label data is located at an interval behind label data if necessary and data accompanying with audio data is located and transmitted, whereby a side which receives this data can easily identify a system of audio data or the like.

Abstract: In order to satisfactorily transmit audio data of various formats through a transmission line, when data having a predetermined data length as a unit is transmitted by a predetermined format between devices connected to a predetermined transmission line, label data indicating a system of transmitted audio data is located at a starting portion of the data having the predetermined data length, sub-label data is located at an interval behind label data if necessary and data accompanying with audio data is located and transmitted, whereby a side which receives this data can easily identify a system of audio data or the like.

Abstract: An apparatus for processing a digital signal that generates a one-bit output signal using a &Dgr;&Sgr; modulation apparatus, which includes a quantizer for quantizing an integrated output of a sixth integrator to generate a one-bit output signal that is sent to respective integrators through an adder under feedback processing to output the one-bit output signal to the outside of a six-order &Dgr;&Sgr; modulator, and a control unit for generating a control signal that controls the feedback loop signal from the quantizer so as to change the signal level of a signal component of the audio frequency band of the one-bit output signal. The control unit receives an integrated output from a second integrator being an input side integrator of the six-order &Dgr;&Sgr; modulator.

Abstract: A data converting apparatus is disclosed which receives packet data made of content data supplemented with recording control information to be referenced upon recording of the content data. When the data converting apparatus outputs the received packet data to another apparatus, the converting apparatus converts the recording control information to a specific value if the other apparatus is expected to function normally only by use of that specific value replacing the recording control information.

Abstract: The present invention relates to a device for performing predetermined processing on a signal inputted thereto that may have signal amplitude of more than one bit, which signal is obtained by subjecting one-bit serial signals to predetermined signal processing, wherein the signal amplitude of more than one bit is converted to a one-bit serial signal by accumulating the signal amplitude exceeding that of one bit, delaying the accumulated signal on the basis of the input signal, and outputting the accumulated signal.

Abstract: The invention relates to a method of transmitting data and the like which are preferably applied to cases where different types or schemes of data are transmitted using a bus line, for example, an IEEE1394 bus line. Data of one sample is transmitted using multiple slots each having a data length of 32 bits. For example, when the data of one sample has 128 bits, data of one sample is transmitted using 8 slots. Each slot includes segmented 16 bits. The leading 8 bits of the 32-bit data constitute label data, with its lowest 3 bits indicating a slot number. Information regarding the number of data bits to be included in one slot is contained in the ancillary data. Data can be easily transmitted if the number of bits in the data of one sample exceeds the maximum bits by which the data can be transmitted using one slot.

Abstract: A technique for transmitting audio data with a varying channel count has been implemented. On the transmission side, data of n channels is divided into blocks each defined for m channels where n≦m. In addition, prior to a transmission of the audio data, a transmitted-data stream matching a predetermined transmission format is generated to include determination information used for determining which portions of each of the blocks are allocated to which portions of each block contain no valid data. On the reception side, on the other hand, the determination information included in the received transmitted-data stream matching the predetermined transmission format is used to identify the unused channels not assigned to valid data in each of the blocks composing the transmitted-data stream so as to allow data of valid channels to be extracted from the stream.