Abstract: A hearing aid (51) includes: a sound collecting unit (500) configured to collect one of propagation sounds respectively output from external apparatuses; a radio wave receiving unit (560) that is an exemplary receiving unit configured to receive transmission audio signals transmitted from the respective external apparatuses; a comparing unit (550) configured to compare the propagation sound collected by the sound collecting unit (500) with each of the transmission audio signals received by the radio wave receiving unit (560), and select one of the transmission audio signals that corresponds to the propagation sound; and a sound output unit (520) configured to output, to the user, the sound obtained from the transmission audio signal selected by the comparing unit.

Abstract: To provide an adjacent channel interference detection apparatus having high detection sensitivity and suitable for LSI integration in a small circuit size. The adjacent channel interference detection apparatus (4) includes: two sign inversion detection units (13a and 13b) that respectively detect sign inversions of an I signal (101) and a Q signal (102); a rotation judgment unit (14) that detects a direction in which a signal point rotates on an IQ plane; a counter unit (15) that counts an output of the rotation judgment unit (14); and an adjacent channel interference detection unit (16) that detects an imbalance in the number of times the signal point rotates in each direction, from the count in the counter unit (15). Adjacent channel interference is detected by an imbalance between the number of times the signal point rotates clockwise and the number of times the signal point rotates counterclockwise on the IQ plane.

Abstract: A hearing aid (51) includes: a sound collecting unit (500) configured to collect one of propagation sounds respectively output from external apparatuses; a radio wave receiving unit (560) that is an exemplary receiving unit configured to receive transmission audio signals transmitted from the respective external apparatuses; a comparing unit (550) configured to compare the propagation sound collected by the sound collecting unit (500) with each of the transmission audio signals received by the radio wave receiving unit (560), and select one of the transmission audio signals that corresponds to the propagation sound; and a sound output unit (520) configured to output, to the user, the sound obtained from the transmission audio signal selected by the comparing unit.

Abstract: For MPEG-2 AAC, MPEG-Surround or (AAC+SBR), whether a received bitstream is of AAC or MPS can not be determined till the details of the received bitstream is analyzed up to the end. Therefore, if the output delay of an audio signal is large, the output of a video signal cannot appropriately be delayed under control, not allowing A/V synchronization. A transmitting apparatus includes: a data packet generating unit which generates a data packet including encoding information that is not included in the header information of an audio stream packet and that indicates whether any processing is included which causes the decoding time of the encoded audio signal to exceed a predetermined decoding time, the data packet being analyzed by a receiving apparatus before decoding the audio stream packet is started; and a transmitting unit which transmits the audio stream packet, data packet and video stream packet via multiplex broadcast.

Abstract: To provide an adjacent channel interference detection apparatus having high detection sensitivity and suitable for LSI integration in a small circuit size. The adjacent channel interference detection apparatus (4) includes: two sign inversion detection units (13a and 13b) that respectively detect sign inversions of an I signal (101) and a Q signal (102); a rotation judgment unit (14) that detects a direction in which a signal point rotates on an IQ plane; a counter unit (15) that counts an output of the rotation judgment unit (14); and an adjacent channel interference detection unit (16) that detects an imbalance in the number of times the signal point rotates in each direction, from the count in the counter unit (15). Adjacent channel interference is detected by an imbalance between the number of times the signal point rotates clockwise and the number of times the signal point rotates counterclockwise on the IQ plane.

Abstract: A diversity reception apparatus having a simple configuration which includes only one AD conversion unit and receives analog modulated signals is provided. The diversity reception apparatus includes a switching unit that analog-multiplexes signals received by two antennas using time-division method and is placed in front of an AD conversion unit. The apparatus also includes a time-division separation unit that (i) obtains time-division multiplexed signals digitized by driving at the same frequency as driving frequency of the AD conversion unit and (ii) separates the time-divided signals into a signal per antenna. Moreover, the apparatus includes signal quality judgment units that judge each signal quality of the time-divided signals and a composition unit that executes composition processing based on the signal quality.

Abstract: In order to realize a diversity reception apparatus having a simple configuration which includes only one AD conversion unit and receiving analog modulated signals, there is provided a diversity reception apparatus which includes: a switching unit (103) that analog-multiplexes signals received by two antennas (101a and 101b) using time-division method, the switching unit being placed in front of an AD conversion unit (104); a time-division separation unit (106) that (i) obtains time-division multiplexed signals digitized by driving at the same frequency as driving frequency of the AD conversion unit (104) and (ii) separates the time-divided signals into a signal per antenna (101a and 101b); signal quality judgment units (107a and 107b) that judge each signal quality of the time-divided signals; and a composition unit (108) that executes composition processing based on the signal quality.

Abstract: Digital broadcasting for transmitting program data including at least one of digital audio data and digital video data with other information is carried out by using terrestrial waves. The program data, download data corresponding to contents of the program data, and reference information correlating the download data with the program data are multiplexing with each other. The multiplexing signals are transmitted over a specific frequency band.

Abstract: The deinterleaving device of this invention deinterleaves an input transmission frame and outputs the deinterleaved frame, the transmission frame being obtained by performing inter-frame interleaving for an original frame to form an intermediate frame and performing inner-segment interleaving for at least one data segment included in the intermediate frame. The deinterleaving device includes: a memory; a data write section for receiving the transmission frame and writing the transmission frame into the memory; and a data read section for releasing the inter-frame interleaving and the inner-segment interleaving simultaneously when reading data from the memory and outputting the data.

Abstract: The object of the invention is to provide a transmission method of the digital broadcasting that can be carried out under the digital broadcasting using the terrestrial waves and does not need complicated operations of using GUI screen.

Abstract: In an audio and video recording apparatus, a video signal is separated into a luminance signal and a chrominance signal. The luminance signal is separated into low frequency and high frequency components. The high frequency component signal is subjected to balanced modulation to be thereafter band-compressed by interleaving the lower side band thereof to the low frequency component. The chrominance signal is processed to be a line sequential color difference signal. An audio signal is sampled and encoded. The luminance signal, the color difference signal and the audio signal are subjected to time-axis compression multiplexing in one frame with a synchronizing signal, address signals and control signals. The multiplex signal is recorded on a recording medium.