Abstract: A receiver is equipped with a demodulation circuit for taking a signal indicating broadcast contents of an analog broadcast out of the first and second intermediate-frequency signals, and for taking a signal indicating broadcast contents of a digital broadcast out of the first and second intermediate-frequency signals. Frequencies of local oscillation signals are made to be a first frequency within a frequency band of the digital broadcast adjacent to a frequency band of the analog broadcast received by the receiver at a time of receiving the analog broadcast, and the frequencies of the local oscillation signals are made to be a second frequency equal to the carrier frequency of the analog broadcast adjacent to the frequency band of the digital broadcast received by the receiver at a time of receiving the digital broadcast.

Abstract: A drive unit includes a drive shaft at an end of a vibrating element that expands and contracts in the predetermined axial direction by application of a predetermined voltage, wherein a movable member is moved by differentiating the speed of expansion and contraction in the predetermined axial direction, a fixing member is fixed to one end of the vibrating element and the other end is fixed to the drive shaft, and a damping member fixes the fixing member to the drive unit while damping vibrations are provided.

Abstract: An electronic apparatus includes a first panel section having a control surface or a display surface, and a panel assembly constructed by detachably mounting the first panel section on a second panel section. A driving mechanism is provided so as to change the attitude of the second panel section. In the detachment position of the first panel section, the attitude of the second panel section is determined so that the second panel section tilts toward the front of the apparatus.

Abstract: In an optical recording medium having a track including plural pits formed based on first data to be recorded and lands defined between neighboring pits, these pits are recorded as they are deformed based on the second data. The first and second data are synthesized and reproduced to realize audio reproduction with a broad frequency range. Moreover, the first data are adapted to be reproducible by a customary disc reproduction device. The reproduction of the first data is controlled by the second data to protect recorded data.

Abstract: A portable telephone apparatus includes a portable telephone unit and a battery pack mounted thereto, wherein the battery pack includes a battery for supplying the portable telephone unit and components in the battery pack with electric power, an opening in which a semiconductor memory is removably inserted, and a memory controller for controlling the operation of reading data stored in the semiconductor memory inserted in the opening in accordance with a control signal from the portable telephone unit, and wherein the portable telephone unit includes a reproducer for reproducing the data read out from the semiconductor memory. When the battery park is removed abruptly before a power switch is turned off, data stored in the semiconductor memory is protected.

Abstract: In order to transmit and receive sample data of different sampling frequencies collectively, the first row of a packet is composed of four bytes and the first and second rows are provided with headers prescribed by the IEEE1394 standard. Also, the second byte in the third row is provided with the first counted value of a data block counter and a fourth byte is provided with a next to the last counted value (DBC) of the data block counter. Further, latter half two bytes in the fourth row are provided with a value of a reference time (time stamp data). The first two bits in the fifth row are provided with values showing recording media, the fourth bits are provided with flags showing sampling frequencies, the seventh and eighth bits are provided with values showing quantized bit numbers, and the second three bytes and after are provided with sample data. The last row of the packet is provided with an error correcting code for data transmitted in and after the third row.

Abstract: A display apparatus with a speaker unit that is generally small in a depthwise dimension but that can generate sound of a good quality in the form of a television receiver includes a plasma display panel, a front panel having an opening through which a display face of the plasma display panel is exposed, and a back cover attached to the front panel for covering the back of the plasma display panel, with the speaker units disposed between the front panel and the back cover. The television receiver further includes a partition wall plate for covering the back of the display panel such that a space is formed between the partition wall plate and the back cover, and each of the speaker units is disposed in the space.

Abstract: A loudspeaker apparatus includes a modulator for frequency-modulating an audio signal to a signal of a frequency band and an ultrasonic generating device adapted to be driven by the output signal of the modulator. The modulator frequency-modulates the audio signal into a first signal modulated on the basis of a an ultrasonic frequency and a source signal and a second signal modulated on the basis of the ultrasonic second frequency and an inverted version of the source signal. As the ultrasonic generating device is driven by the modulated signals, it emits an ultrasonic wave of a first frequency and an ultrasonic wave of a second frequency and the frequency component corresponding to the difference of the two frequencies provides audible sound. Since the ultrasonic generating device emits ultrasonic waves, an ultradirectivity can be realized.

Abstract: A speaker apparatus in which the acoustic sound is radiated by flexural oscillations of a diaphragm in the form of a panel having a substantially flat surface. The speaker apparatus includes a panel-shaped diaphragm the outer rim of which can be oscillated substantially freely at least in the direction along the diaphragm thickness and at least one driver unit constituting an oscillation source secured to the diaphragm surface for imparting oscillations to the diaphragm. The diaphragm is set into flexural oscillations by oscillations applied from the driver unit driven on the basis of the playback input signal. By flexurally oscillating the diaphragm to radiate the acoustic sound, optimum frequency response characteristics can be obtained over a wide frequency range from the low to high frequency range. Moreover, the acoustic sound of optimum sound quality may be radiated in a state of minimum sound pressure level fluctuations over a frequency range from the low to high frequency range.

Abstract: The output device generates the PN code string every second chip interval with reference to the video sync signal, and spectrally spreads the additional information using this PN code string. The spectrally spread additional information is superimposed on the video signal every second chip interval and outputted. Upon receiving the video signal, in the recording device for recording the video signal on a recording medium, the video signal component is canceled each other between the video signal component in the chip interval on which the additional information is superimposed and the video signal component in the chip interval on which the additional information is not superimposed because of the correlation of the video signal in the horizontal direction, and only the additional information is extracted.

Abstract: Apparatus for providing fine search in a sled movement mechanism employing a stepping motor by controlling the speed with which the head jumps in succession to next neighboring tracts on a disc and by causing pickup movement accurately for a distance corresponding to the distance of movement of the objective lens to realize the fine search in the sled movement mechanism employing the stepping motor. Also, the distance of head movement in the radial direction of the disc can be prescribed and, upon interruption of the head jumping operation, the head can be subsequently transported a distance corresponding to the target number of track jumps.

Abstract: In a wireless transmission control method for controlling wireless communication access among a plurality of communication stations via wireless transmission of a control signal from a central control station to a terminal station, a communication station selected as the central control station judges a station with which each terminal station in a wireless network is capable of directly making communication. When it is detected that each terminal station is capable of directly making communication with a communication station having many more stations than those directly making wireless communication with the central control station, processing for changing the detected terminal station to the central control station is performed. Thus, when the control station is set and the access management of wireless communication is carried out under the control of the control station, the control station can be selected easily and satisfactorily.

Abstract: An absolute time area is expanded by using an area of relatively low importance such as zero-data area and/or relative time area or the like in a Q channel in a sub-code in a recording format of a CD. Thus, an absolute time expression which can cope with a disc having a large capacity or the like can be performed. An absolute time expression is performed in a manner such that a digit of “100 minutes” is BCD expressed by using lower 4 bits in the 8-bit zero-data area ZERO. Thus, the absolute time of up to 999min59sec74frame can be expressed. A digit of “hour” is also expressed by using the lower 4 bits in the zero-data area. For example, identification information showing that a disc is a high density optical disc of large capacity is expressed by using the upper 4 bits in the zero-data area ZERO.

Abstract: At the time of performing signal processing of information signals to which copyright protection information has been added, signal processing which would make detection of copyright protection information difficult or impossible is restricted, based on the copyright protection information detected from the information signals. Thus, even in the event that the information signals pass through a device having a signal processing unit which would make detection of copyright protection information difficult or impossible, copyright protection can be performed in a sure and inexpensive manner.

Abstract: Communication data including actually-photographed pictures is provided. The communication data consists of text data such as a sentence input by a user and a plurality of still pictures obtained by taking a picture of the user a plurality of times. Because the communication data includes visual information provided by a picture of a user, the communication data can more stimulate a user who receives the communication data than text-base communication data can. Furthermore, it is possible to represent a motion using a plurality of still pictures thereby transmitting a large amount of information. Because the motion is represented using only a plurality of still pictures, the data size is much smaller than is required to represent a motion using a moving picture.

Abstract: Audio data of 20 bits is separated into first data of upper 16 bits and second data of lower 4 bits. EFM modulation data is formed from the first data. A laser beam is on/off controlled in correspondence to the logic level of channel data obtained by NRZI modulating a serial data train. The first data, therefore, is recorded in a manner similar to the case of a compact disc. Each pit is controlled so as to have a displacement in the right/left direction for the track center in accordance with the second data and the deviated pit is formed. When data is recorded by the displacement of the pit, since a high frequency component of a tracking error signal changes upon reproduction, the second data can be extracted from the tracking error signal.

Abstract: A recording medium reproducing apparatus includes a mechanical deck, a lid body, a first moving member, a second moving member, and a synchronization member. The mechanical deck has one end turnably supported by a chassis and the other end having a recording medium insertion port. The lid body is movable between a lid close position and a lid open position. The first moving member turns the mechanical deck between a reproducing position and an ejection position. The second moving member moves the lid body from the lid close position to the lid open position. The synchronization member controls the first and second moving members in synchronization with each other such that the lid body is moved inside the housing by the second moving member and the mechanical deck is turned to the ejection position by the first moving member to allow the recording medium insertion port to be directed outwardly.

Abstract: Disclosed herein is a method of receiving a spread-spectrum signal in a radio communication terminal device having a plurality of demodulators for demodulating a received spread-spectrum signal, comprising the steps of detecting when at least one of a plurality of demodulators is temporarily unable to properly demodulate the received spread-spectrum signal, determining whether or not there is a demodulator which is not being used other than the at least one of the demodulators, and continuing a demodulating process of the at least one of the demodulators, if there is a demodulator which is not being used. Thus, according to the present invention, the time in which the demodulator is unlocked is minimized, and a stable, high-quality signal can be received.

Abstract: A signal amplifier apparatus adapted for carrying out delta-sigma modulation of an input signal to carry out pulse width modulation (PWM) of that signal, to obtain a PWM signal, and to amplify this PWM signal so that a signal of a predetermined magnitude is obtained, wherein the signal amplifier apparatus includes a correction circuit for correcting an output of a quantizer provided in a delta-sigma modulation device. The correction circuit is installed in a feedback path with respect to the input side from the quantizer or immediately before a pulse width modulator to thereby correct distortion taking place in the amplifier. In addition, the signal amplifier apparatus invention compares PWM signals at the input and the output of the amplifier to correct the output of the quantizer that is provided in the delta-sigma modulation device, so as to cancel distortion taking place in the amplifier in accordance with respective rising time difference and falling time difference to thereby correct distortion.

Abstract: Data composed of a plurality of still pictures is stored in a center (1) connected to a predetermined communication line. Under the condition that a communication terminal apparatus (10) and the center (1) are connected by a communication line, the data composed of a plurality of still pictures accumulated in the center (1) is downloaded into a memory housed in the communication terminal apparatus (10) in response to a request from the communication terminal apparatus (10). After the connection made by the communication line is cut off, by a predetermined operation of the communication terminal apparatus (10), a plurality of still pictures are displayed one by one on a display unit of the communication terminal apparatus (10) in a predetermined order based on data stored in the memory.