Abstract: A loudspeaker diaphragm includes a diaphragm portion and an edge portion, which is molded integrally with the diaphragm portion and made of a material different from a material for the diaphragm portion. The edge portion contains at least one thermoplastic polymer (I), in combination with a block polymer (II). The at least one thermoplastic polymer (I) is selected from a block copolymer (I-a) which contains a polymer block (A) having a repeating structural unit derived from an aromatic vinyl compound and a polymer block (B) having a repeating structural unit derived from a conjugated diene, and an addition hydrogenated block copolymer (I-b) of the block copolymer (I-a). The block copolymer (II) contains a polymer block (C) having a repeating structural unit derived from an olefin compound and a polymer block (D) having a repeating structural unit derived from a (meth)acrylic compound.

Abstract: A pre-out terminal that outputs a left outside audio signal can be fixed and an increase of the number of DACs is prevented. In the case that a surround back left audio signal SBL and a left outside audio signal LW are included, the signal SBL is amplified and output to a surround back left SP terminal 14a through a switch S13a. The signal LW is amplified and output to a left outside SP terminal 14b through a switch S13c. The signal LW is supplied from a DAC 11b to a left outside pre-out terminal 11d through a switch S11c. At this point, in order to supply the signal LW to the left outside pre-out terminal 11d, a DAC 11c is not used, but the DAC 11b is used. Accordingly, the DAC 11c can be used for another signal (ex., ZONE2) to decrease the number of DACs.

Abstract: A ZONE4 left audio signal Z4L is output without releasing a connection of a surround left speaker SSL. When determining that a playback of the ZONE4 left audio signal Z4L is set by a user manipulation, a controller 2 controls switches S11b and S13b in an on state, and controls switches S11a, S13a, and S13c in an off state. Accordingly, the ZONE4 left audio signal Z4L is supplied from a DSP to an amplifier 12a through the switch S11b, amplified by the amplifier 12a, and supplied to a surround back left/ZONE4 left SP terminal 14b through the switch S13b. A surround left SP terminal 14a is an output terminal dedicated to a surround left audio signal, so that the ZONE4 left audio signal Z4L can be output without releasing the connection of the surround left speaker SSL.

Abstract: A relay apparatus of a video and audio transmitting/receiving system delays a time before transmitting an authentication start instruction after an authentication start video signal being transmitted to a receiving apparatus. Accordingly, a problem that the receiving apparatus receives the authentication start instruction from the relay apparatus before locking the authentication start video signal and cannot perform authentication processing normally, leading to a failure in authentication. A correction time is decided based on a resolution of the authentication start video signal transmitted from the receiving apparatus and a combination of receiving apparatuses and transmitting apparatuses connected to the relay apparatus.

Abstract: A pulse width modulation signal with a less distortion component that is not influenced by a common-mode noise or an offset voltage is generated. Pulse signal generation circuits 6, 7 generate pulse signals S1, S2 whose pulse widths are discharge times t1, t2 of integrators 3, 4, respectively, a PWM signal generation circuit 8 detects discharge end timings of the integrators 3, 4 based on the pulse signals S1, S2, and a pulse whose pulse width is a time between discharge end timing of one of the integrators 4 and discharge end timing of the other one of the integrators 3 is generated so as to be output as a PWM signal Spwm.

Abstract: A network audio system allows AV files existing in a PC to be readily registered and music to be reproduced using a client machine. The client machine is connected to the PC and a server application and a controller application are installed in the PC. Music is reproduced using the client machine based on an AV file existing in a user folder, when the user drags and drops an icon for the AV folder to an icon for the client machine. In response to the operation, the controller application produces music piece information including the artist name and the like based the tag information of the AV file. When the music piece information is not yet registered, the server application provides the music piece information with a music piece ID for registration in the content information database. The controller application transmits a command including the ID to the client machine.

Abstract: A channel divider that can suitably set a crossover frequency when a biwiring-connectable multiway speaker system including network circuits are used is provided. The channel divider includes a low-pass filter LPF and a high-pass filter HPF for dividing a band of a sound signal into a first output signal and a second output signal so as to output the signals, and a control circuit for controlling the filters. The channel divider has a sound output mode in which the control circuit sets a cutoff frequency fcL of LPF to a value higher than fc0 by about ? to 1 Oct., sets a cutoff frequency fcH of HPF to a value lower than fc0 by about ? to 1 Oct., and outputs the first output signal and the second output signal including frequency bands fcL to fcH when any crossover frequency fc0 for defining the band division is specified.

Abstract: In an audio processing apparatus of the present invention, one or two audio signals selected from a surround rear left audio signal, a left outer audio signal and a left upper audio signal is (are) amplified to be outputted from a speaker terminal(s) corresponding to this (these) channel(s) without necessity to provide amplifiers of all channels. When the surround rear left audio signal is included, a switch S13a is turned ON to supply the surround rear left audio signal amplified by an amplifier 12a to a SP terminal 14a. When the left outer audio signal is included, a switch 13b is turned ON to supply the left outer audio signal amplified by the amplifier 12a to a SP terminal 14b, or a switch 13c is turned ON to supply the left outer audio signal amplified by an amplifier 12b to the SP terminal 14b. When the left upper audio signal is included, a switch 13d is turned ON to supply the left upper audio signal amplified by the amplifier 12b to a SP terminal 14c.

Abstract: An electrodynamic speaker in which the number of steps of forming a tinsel wire to be connected to a voice coil and connecting the tinsel wire to a terminal can be reduced is provided. A frame of the electrodynamic speaker includes an edge mounting section, a magnetic circuit mounting section, a coupling section for coupling the edge mounting section and the magnetic circuit mounting section so as to define a plurality of window sections, a terminal fixing section for fixing a terminal, and at least one void for dividing the edge mounting section having an approximately annular shape, the void being communicatively connected to the window sections of the coupling section. A middle portion of the tinsel wire passes through the void or the window sections communicatively connected to the void, and the other end of the tinsel wire is connected and fixed to the terminal.

Abstract: A controller for obtaining a contents list via a network, in which a contents list of scroll destination is quickly obtained when a scroll instruction is input, is provided. When the scroll instruction in the contents list is input by a user's operation, the controller sets a scroll list obtaining flag into an on state, and preferentially obtains contents information about the scroll destination. When the scroll list obtaining flag is set into the on state, the controller does not transmit a normal contents list obtaining request to a contents list transmitting apparatus. Since the controller transmits the normal contents list obtaining request after average response time passes, the controller can obtain the contents information about scroll destination in the contents list without delay.

Abstract: A receiving apparatus obtains identification information from a transmitting apparatus via a cable communication when the transmitting apparatus is connected with the receiving apparatus via the cable communication while the receiving apparatus is being connected with the transmitting apparatus via a radio communication. The receiving apparatus judges whether obtained identification information is the same as identification information of the transmitting apparatus which is connected with the receiving apparatus via the radio communication. When they are same, the receiving apparatus transmits an instruction to the transmitting apparatus to switch an output of contents data from the radio communication to the cable communication. When the transmitting apparatus receives the instruction, it switches the output of the contents data from the radio communication to the cable communication.

Abstract: A pulse width modulation signal with a less distortion component that is not influenced by a common-mode noise or an offset voltage is generated. Pulse signal generation circuits 6, 7 generate pulse signals S1, S2 whose pulse widths are discharge times t1, t2 of integrators 3, 4, respectively, a PWM signal generation circuit 8 detects discharge end timings of the integrators 3, 4 based on the pulse signals S1, S2, and a pulse whose pulse width is a time between discharge end timing of one of the integrators 4 and discharge end timing of the other one of the integrators 3 is generated so as to be output as a PWM signal Spwm.

Abstract: A frequency characteristics determination device that can prevent generation of a frequency response curve having an unnatural shape is provided. A CPU 11 sets pass points Pi and Pi+1 through which the frequency response curve of an audio signal should pass. Pi+1 of a frequency Xpi+1 which is higher than a frequency Xpi of the pass point Pi. The CPU 11 determines a direction point ai of a Bezier curve Ci for connecting the pass points Pi and Pi+1 based on the pass points Pi and Pi+1. The CPU 11 determines whether a frequency Xai of the direction point ai is within a reference range between not less than the frequency Xpi and not more than the frequency Xpi+1. When the frequency Xai is out of the reference range, the CPU 11 moves the direction point ai so that the frequency Xai is within the reference range.

Abstract: A current mirror circuit converts a positive-side supply voltage of a second power supply with respect to a reference potential into an electric current so as to supply the electric current to a current/voltage converting section. The current/voltage converting section converts the electric current from the current mirror circuit into a voltage with respect to the reference potential of a first power supply so as to supply the voltage to a feedback input terminal of a switching controller. Therefore, although the reference potential of the first power supply supplied to the switching controller is different from the reference potential of the second power supply, the electric current from the current mirror circuit is not influenced by the reference potential.

Abstract: A command transmitting apparatus includes: an input section having a first key and a second key; a mode setting section having a normal mode and a menu mode, shifting from the normal mode to the menu mode in response to an operation of the first key, and shifting from the menu mode to the normal mode after lapse of predetermined time which is the same as the predetermined time set in the content reproducing apparatus; a command transmitting section for transmitting the first command to the content reproducing apparatus in response to an operation on the first key; and a mode determining section for determining a mode set in the mode setting section when the second key is operated. When it is determined that the mode setting section is in the normal mode, the command transmitting section transmits a second command for controlling the normal mode of the content reproducing apparatus to the content reproducing apparatus.

Abstract: A loudspeaker diaphragm according to an embodiment of the present invention includes: a diaphragm portion; and an edge portion, which is molded integrally with the diaphragm portion and made of a material different from a material for the diaphragm portion, wherein: the diaphragm portion includes, at an outer peripheral end thereof, an outer wall portion provided upright in a direction substantially parallel to a vibrating direction of the diaphragm portion; an inner peripheral surface of the edge portion is bonded onto an outer peripheral surface of the outer wall portion; and the outer wall portion has a height larger than a thickness of the diaphragm portion.

Abstract: An AV amplifier detects combinations of resolutions and vertical frequencies of input video data, and reads information about combinations of resolutions and vertical frequencies stored in a display device in advance. The AV amplifier sets values, that are a combination of an output resolution and an output vertical frequency in which a value obtained by dividing a vertical frequency of the video data detected by a video detecting section by the output vertical frequency is an integer number and are present in the combinations of the resolutions and the vertical frequencies read by the reading section, as the combination of the output resolution and the output vertical frequency.

Abstract: An amplifying device is provided that reduces power consumption and quickly starts amplification of an audio signal of a channel to be used. A control section 17 inputs a control signal for instructing operation or standby into post-amplifying sections 11b and 12b, and inputs a control signal for instructing standby to post-amplifying sections 13b and 14b. In the post-amplifying section 11b, when the control signal for instructing standby or operation is input from the control section 17, a modulation circuit 52 modulates the analog audio signal into a switching signal. An output stage circuit 54 amplifies the output signal. When the control signal for instructing the operation is input from the control section 17, a driving circuit 53 drives the output stage circuit 54 in response to the switching signal, and stops the driving of the output stage circuit 54 when the control signal for instructing standby is input.

Abstract: A video and audio processing device comprises: a switching unit that switches a video input and output pathway at least between “analog video input terminal—analog video output terminal” and “specific-standard digital input terminal—specific-standard digital output terminal”; an input determining unit that determines whether the specific-standard digital data is fed into the specific-standard digital input terminal; and a pathway determining unit that determines whether the video input and output pathway is “analog video input terminal—analog video output terminal”. The receiving unit produces only the audio data from the specific-standard digital data, when the specific-standard digital data is fed into the specific-standard digital input terminal while the video input and output pathway is “analog video input terminal—analog video output terminal”.

Abstract: An image processing apparatus includes a resolution determining section that determines, for a selected combination of an input terminal and an output terminal, an input set resolution set for an input terminal to be a processing resolution, when an output set resolution of an output terminal is set to “Source”; and ignores the input set resolution set for the input terminal and determines the output set resolution set for the output terminal to be a processing resolution, when the output set resolution of the output terminal is set to other than “Source”.