Abstract: The present invention discloses an 802.1X protocol-based multicasting control method. According to the method, an authenticated subscriber intercepts the message while sending a request message for joining in a multicasting group, then obtains the port and MAC address information from the intercepted message, searches corresponding subscriber account information from the authenticated data according to said port and MAC address, then authenticates the subscriber's account number and multicasting IP address, and adds the subscriber to the multicasting group after successful authentication; therefore, controlled multicasting, authentication of the legality of adding to multicasting, and accounting can be achieved according to the method, which can also protect existing investment and compatibility with existing software of the subscriber.

Abstract: Disclosed is a headset assembly communicable with a portable device capable of receiving and processing biological sensor data. The headset assembly includes a body portion, an earbud coupled with the body portion, a speaker component coupled with the earbud, one or more bio sensors displaced about the outer surface of the earbud that can monitor and pick-up biological characteristics of the user when in contact with the user's skin, and means for coupling the headset assembly with the portable device.

Abstract: Systems, methods and devices for gathering data concerning media usage by predetermined audience members. An audience measurement code in acoustic energy produced by a media receiver is detected by a portable media monitor. The monitor also detects a location code produced in a vicinity of the media receiver.

Abstract: A wireless headset has a pair of earpieces, each with a speaker or driver, and a microphone that is supported by one of the earpieces. The headset operates in wireless communication with an audio source, such as a personal audio player, and a mobile telephone. The wireless headset provides automatic cut-off of the driver in the earpiece supporting the microphone whenever the microphone is activated, thereby to prevent feedback between the microphone and the driver in the supporting earpiece.

Abstract: A capacitive load driving circuit includes an error amplification circuit that amplifies a difference between an external input signal provided to one input terminal and a negative feedback signal provided from the negative feedback circuit to another input terminal; a modulation circuit; a power switching circuit; a gate driving circuit; a low-pass filter connected to an output side of the power switching circuit and that removes switching carrier components included in an output signal of the power switching circuit; an output transformer that boosts an output signal of the low-pass filter and has a primary winding connected to an output terminal of the filter; a capacitive load that is connected in parallel with a secondary winding of the output transformer; and the negative feedback circuit performs a negative feedback from the output terminal of the low-pass filter to an input side of the error amplification circuit.

Abstract: An electronic volume device of an invention includes a common volume I/O 371 for receiving an i-th common volume level Dcom[i] (i=1 to N) on a common scale of N steps, a volume converter 373 for converting the Dcom[i] into a j-th unique volume level Dvol[j] on a unique scale of n steps; and a volume controller 372 for controlling an electronic volume based on the unique volume. The volume converter 373 includes a volume memory for storing an offset between the Dcom[i] and the Dvol [j] and a volume controller that controls at least one of the Dvol[j] and the offset such that the received Dcom agrees with the sum of the Dvol[j] and the offset and controls the Dvol[j] on a higher priority than the offset.

Abstract: A surround sound headphone has a plurality of sound-producing planes provided in each of the earpieces of the headphone, and at least one diaphragm arranged on each of the sound-producing planes for producing sounds in directions toward a user's ear, such that the sounds produced by the diaphragms converge at a user's ears, enabling the user to experience a stereo and surround sound effect.

Abstract: A headset (1) and a headphone has two speakers (2, 3) connected via a headband (4) and is configured such that the headset may be used as a conventional headset or as a stereo speaker set, where the speakers of the headband and the headset constitute supports against a substrate. The headband may expediently be made of a permanently deformable material in the form of a sandwich structure, which is constructed as three layers, or may be composed of one or more rotary joints or of one or more bistable joints, which provides many possible settings of the support against the substrate, of which there may be more than one. In addition, the headset may incorporate a DSP which is adapted to received signals from a sensor sensing whether the headset is used as a conventional headset or as a stereo speaker set, and, where appropriate, sets some ether electrical circuits incorporated in the headset, which regulate volume and transmission characteristics, automatically on the basis of the sensed signals.

Abstract: The present invention relates to a handsfree device capable of enhancing analog audio signals and RF signals for improved hearing comprising: at least one variable gain amplifier which amplify signals transmitted to and from said handsfree device; a CODEC, where said CODEC transmits to and receives signals from said at least on variable amplifier; a RF transceiver, where said RF transceiver receives and transmits RF signals; a digital signal processor, where said digital signal processor transmits commands to the CODEC and RF transceiver; and control commands executed by the digital signal processor, where said control commands transmit functional commands to the both the CODEC and digital signal processor wherein said functional commands include audio shaping and adaptive commands, where said audio shaping and adaptive commands control the transmission of signals via both RF signal sources and ambient analog signal sources.

Abstract: A method and apparatus for combining an attachment and acoustic port on a housing of a mobile device is disclosed herein. The mobile device includes a speaker disposed within the housing. A combined attachment and acoustic port disposed on the housing is configured to project audible sound from the speaker, via an acoustic channel, and includes an attachment member for attaching an external member to the mobile device. The mobile device may comprise any personal electronic device, such as a portable radio, cassette player, CD player, or MP3 player. Further, the mobile device may comprise a mobile communication device, such as a cellular telephone, pager, or PDA.

Abstract: A music reproduction apparatus comprises an audio player and a headphone. The audio player comprises a circular main body, a display panel provided at a front face of the main body, an operating switch rotatably provided at a periphery of the display panel, and a wireless communication antenna provided at a rear face of the main body. The headphone comprises a circular main body, a speaker provided at one face of the main body, a wireless communication antenna provided at the other face of the main body, and an ear hook provided at the outside of the main body.

Abstract: A wireless earphone includes: a wireless transmitting/receiving unit for transmitting/receiving a signal to/from the portable terminal according to a short wireless communication scheme; a voice detecting unit for detecting a user voice signal with being inserted into an ear of the user; a signal processing unit for converting a short range wireless communication signal received through the wireless transmitting/receiving unit to an audio signal, eliminating noise and echo from a voice signal received through the voice detecting unit, converting the noise and echo eliminated voice signal to a short range wireless communication signal and transmitting the short range wireless communication signal; an output unit for outputting the audio signal received from the signal processing unit; and a power supplying unit for receiving power and being charged when the wireless stereo earphone is attached to the mobile terminal, and supplying the power to each element of the wireless earphone.

Abstract: Systems provide an audio/visual output to each of a plurality of listeners in a manner that permits individualized audio adjustment, wherein audio comprises a first signal that is substantially voice and a second signal that is substantially other than voice. The systems may include a video device, a storage medium, and a transmitter that transmits the first and second signals to a plurality of personal listening devices. Each of the plurality of personal listening devices may include first and second receivers, first and second adjustment devices, an audio signal combining device, and one or more transducers, wherein the systems permit each of the plurality of listeners to adjust the first and second signals independently of other ones of the plurality of listeners in an audience.

Abstract: A wireless audio headphone communication system has an audio input for receiving an audio signal from an audio source. A wireless transceiver receives and transmits radio frequency communications with a wireless audio headphone, the communications including an audio control signal that conforms to a wireless audio control protocol of a wireless communication protocol. A converter converts the audio control signal between the wireless audio control protocol transceived by the wireless transceiver and a local control protocol for controlling the audio source.

Abstract: A digital wireless stereophonic music transmission device includes a transmission module and a headphone. The transmission module includes a digital signal input device for receiving digital audio signals from an external digital music player, a stereophonic input device for receiving stereophonic signals from an external stereophonic music player, an analog/digital converter for converting the stereophonic signals into digital audio signals, and a signal transmitting module that receives digital audio signals from one of the digital signal input device and the analog/digital converter and then codes and transmits the signals received. The headphone includes a signal receiving module, an analog/digital converter, an amplifier, and at least one loudspeaker unit. The signal receiving module receives the signals from the signal transmitting module.

Abstract: Disclosed is an enclosure for a speaker for a communication device. The enclosure comprises: a surface; a speaker grill located in the surface, the grill having an opening therein providing an air channel to the speaker; and at least one structure located in a first region in the surface and protruding from the surface. The enclosure is shaped such that when the enclosure is placed on a flat surface with the surface facing the flat surface, the structure causes the surface to be canted from the flat surface to expose the speaker grill to ambient air.

Abstract: The wireless headphone 10 that receives an audio signal P in the form of an optical signal including a right-channel sound signal and a left-channel sound signal and that outputs sound from an audio output portion 12 is provided with first and second light receiving portions 15 and 16 that are disposed so as to be directed in different directions and receive the audio signal P. The wireless headphone 10 compares the S/N ratios of the signals received by the first and second light receiving portions 15 and 16, and, based on the comparison result, switches an output from the audio output portion 12 between right-channel sound and left-channel sound.

Abstract: A method for influencing, e.g., for decreasing, the treble reproduction of an audio signal for reproduction obtained from a received signal, the received field strength and reception quality of the received signal being evaluated and, as a function thereof, the transfer function of at least one filter unit that can be impinged upon by the audio signal being controlled, as well as a circuit assemblage or arrangement for performing such a method for the modification of treble reproduction, so that, among other things, reproduction of the interference may always be reliably concealed and so that no noticeable and/or irritating “flutter” effects may occur. The method may include processing of the output signals of at least two reception interference detectors, and processing of the received field strength may be accomplished respectively in at least one first processing branch operating at a first, e.g.

Abstract: Embodiments include system architectures and processes for handling the provisioning, management and control of media renderers. A plurality of media renderers are organized into a plurality of zones. Provisioning is performed dynamically as mobile media sources move between zones. Media renderers are dynamically detected, resources are allocated, and the system is configured for playback without noticeable interruption of the streaming and rendering of the media.

Abstract: The present invention discloses a portable phone using a sound receiving unit installed in the portable phone to receive a sound in the surrounding within an appropriate range, and then using a sound source playback device to play a sound after being amplified, so that a person having a hearing problem can just carry a mobile phone to concurrently have the basic functions of the mobile phone and use the sound amplification function of the mobile phone to supplement the deficiency of the hearing ability when talking to or communicating with others. The portable phone can be toggled between the regular telephone function and the hearing aid function, and thus concurrently serving as a hearing aid to the people who have a hearing problem.

Abstract: A modular entertainment system includes a plurality of electronic components for receiving control signals and providing a controlled output. A plurality of modules are also included. Each module of the plurality of modules is in direct communication with at least one electronic component of the plurality of electronic components. Each module comprises at least one electric power signal and control signal transceiver element to wirelessly share an electric power signal and a control signal with an adjacent module. Each module is disposed in a direction horizontal to the adjacent module.

Abstract: A stereo headset (104) with push-to-talk function can be interfaced with a wireless communication device (102) via a connector interface. The connector interface preferably includes a jack at the wireless communication device (102) and a compatible plug at the stereo headset (104). An electrical contact (310) at the connector interface can contemporaneously interconnect both electrical audio signals between the wireless communication device (102) and at least one of the speakers of the stereo headset (104) and electrical user input signals from an external push-to-talk user input device (232) to the wireless communication device (102).

Abstract: Control data is stored in a first memory. Control data inputted from an external device is stored a second rewritable memory. A control section selects either one of the first and second memories and controls operation according to a control program using the control data stored in the memory selected. An image corresponding to control data is displayed on a display screen. Through the image, it is possible to select particular control data from a plurality of control data. The control data selected via the screen is sent to the second memory. Processing can be therefore executed to appropriately cope with requirements of the user.

Abstract: In a short range radio communication headset, signals transmitted by the short range radio communications are received while direct sounds propagated from an external are detected. Then, a digital signal adaptation processing using either received signals or the direct sounds as reference signals are applied, and a ratio between the received signals and the direct sounds is controlled by correlating the reference signals and another one of the received signals and the direct sounds that are not used as the reference signals and extracting necessary components.

Abstract: A high frequency signal transmission apparatus includes a transmitter for transmitting received signals from a signal source as a modulated signal on a high frequency 900 MHz carrier to a remote receiver. The remote receiver converts the high frequency carrier in at least one conversion step to a lower frequency carrier signal. The lower frequency carrier signal carrying the modulated signal is then converted to an audio output or to another carrier signal and retransmitted as a modulated second signal to another remote receiver capable of demodulating the signal and broadcasting the audio sounds or video images. The oscillators in the transmitter and receiver are selectable to operate at discrete frequencies. Automatic fine tuning control is provided in the receiver to accommodate drift of the oscillator in the receiver.

Abstract: A wireless speaker system used in conjunction with a hard-wired audio system is provided. The wireless speaker system includes a wireless transmitter module including an input connected to a wired speaker output of a main component of the hard-wired audio system. The wireless transmitter module transmits an output signal of a predefined frequency carrying the output signal of the main component. A wireless receiver module including an output connected to the wired speaker input of the external speaker receives the output signal on the predefined frequency and the external speaker responds to the output signal.

Abstract: A headphone mounted 3-in-1 anti-noise radio sound-collection device is described. The device includes an anti-noise circuit system, a radio am/fm circuit system, and a sound collection system for receiving an external sound. The structure is wireless with a microphone and associated cables contained in the headphone headband. The microphone is provided to receive an external noise signal, and the device then generates a nullifying out of phase signal. The device uses a sound collection device to receive an external signal and an am/fm radio is also provided, all of which sound through the ear speakers on the headphone.

Abstract: A method for simulating an artificial sound environment including sending an ultrasound reference signal to a headphone assembly worn by a user having two ears, the headphone assembly audibly providing at least one audio signal to each of the ears, processing arrival times of the ultrasound reference signal at each ear, so as to measure a phase difference of the signal as perceived by one ear in contrast to the other ear, modulating at least two audio signals, at least one signal for each ear, in accordance with the phase difference, and sending the at least two audio signals via the headphone assembly to each of the ears.

Abstract: An infrared emitter comprises a preamplifier, an infrared RF emitter, an infrared channel controller and a photodiode emitting-medium. With the emitter, by switching between two channels with an infrared channel controller, and by the mode of arrangement of a plurality of infrared emitting diodes and two Darlington amplifying circuits on the parts in a photodiode emitting-medium, crosstalk disturbance during transmitting carrier waves to a wireless earphone is inhibited. The emitter is applied to industries of audio/video playing, car audio/video equipment and hi-fi equipment.

Abstract: An audio processing apparatus has a converter for converting n-channel (positive integral number: n?1) audio signals input from at least one sound source into two-channel signals, a pair of correcting filters to which a pair of two-channel signals converted by converter are supplied and which correct a difference of the sense of hearing due to a difference of headphone characteristics, and an output section for supplying a pair of output signals from the pair of correcting filters to right and left speaker units of a headphone.

Abstract: A transmitting/receiving device and a transmitting/receiving method for transmitting and receiving an acoustic signal through infrared radiation or the like are obtained wherein noise and interruption of the sound due to overmodulation of a transmitting device in compressing/expanding and transmitting the acoustic signal are not generated. In a transmitting/receiving device or a transmitting/receiving method having a receiving device for receiving a signal wireless-transmitted from a transmitting device, demodulating the signal to obtain an analog signal, and outputting the signal, wherein an analog acoustic signal input into the transmitting device is digitized, subjected to signal processing, analog-converted, and output. In the signal processing, the input digital signal is delayed and a level of the delay output signal is compressed or expanded according to a level of the input signal.

Abstract: An LCD display has a built-in audio processing device. The audio processing device receives audio signals from a piece of Audio/Video equipment and modulates the received audio signals. The modulated audio signals are further wirelessly emitted by infrared emitting diodes that are mounted in a position near the screen of the LCD display. When a user wears wireless earphones, the audio signals can be received and played by the earphones so people in the proximity of the LCD display will not be distracted by the sound.

Abstract: Described is a personal on-demand audio entertainment system with a base unit attached to a personal computer or other source, a headphone unit and a remote control unit. The base unit transmits digital audio content to the headphone unit using infrared, radio frequency, magnetic or electromagnetic coupling. These data are stored in solid-state memory within the headphone unit. In the headphone unit, the stored digital audio content is converted to analog audio signals, amplified and sent to transducers for conversion to audio signal for the listener during playback. The system is designed such that playback may occur during the downloading process. The remote control unit also uses infrared, radio frequency, magnetic or electromagnetic coupling for communication to the headphone unit. This communication is made using a different channel and does not interfere with the audio data downloading.

Abstract: An audio output apparatus comprises a sound output unit configured to output sound that corresponds to the audio data transmitted from a first sound source device connected by radio to the audio output apparatus, a priority-level comparing unit configured to compare priority information transmitted from the first sound source device and representing a priority level assigned thereto, with priority information transmitted from a second sound source device and representing a priority level assigned thereto, when the second sound source devices is connected by radio to the audio output apparatus while the audio output apparatus is outputting sound corresponding to the audio data transmitted from the first sound source device, and a sound-source selecting unit configured to select one of the first and second sound source devices, as a source of sound to be output, in accordance with the result of comparison performed by the priority-level comparing unit.

Abstract: A speaker system for an electronic device includes a keypad with keys, a housing with first spaces for receiving respective ones of the keys, and a flat speaker located under the keypad. The keys and the first spaces are sized such that there are gaps between the keys and the housing when the keys are received within the first spaces. The speaker is co-planar with the keypad and when sound is projected from the speaker, it is emitted through the gaps between the keys and the housing.

Abstract: An audio output apparatus having a wireless speaker is provided in an apparatus which outputs audio signal of 5.1 channel. In the audio output apparatus, an audio signal encoded in accordance with an IEEE 1394 protocol is received by a sub-woofer speaker through an IEEE 1394 communication line, is decoded in the sub-woofer speaker, is modulated by a spread spectrum FM modulation method, and is then transmitted to a plurality of wireless-connected speakers so as to be outputted.

Abstract: The present invention is directed to wireless digital audio systems for transmission of a signal from an audio player device to a headphone. An audio transmitter may include a headphone plug in communication with an analog low pass filter wherein the headphone plug may be connectable to a headphone jack of an audio source. The low pass filter output signal may be in communication with an A/D converter whose output may be in communication with a digital low pass filter that outputs a signal to an encoder. The encoder output may be in communication with a channel encoder the output of which may be in communication with a block interleaver. The block interleaver output may be in communication with a modulator the output of which may be summed with a transmitter code generator output in a summating element. The modulator may be a 64 Ary modulator.

Abstract: A mobile phone charger also functioning as a remote sound monitoring device is provided. The charger internally includes a high-sensitive microphone, a DTMF decoder, and a central processing unit (CPU). When a handset of a mobile phone is disposed in a handset w/battery charging socket on the charger, an in-car hand-free enabling circuit in the charger is enabled for the handset in the charger to charge while entering into a hand-freemode. At this point, the charger substitutes for the handset and the CPU in the charger automatically receives signals of in-coming call over the mobile phone and the mobile phone does not ring. On receipt of a signal of an in-coming call, the CPU prompts the caller to enter a code that is decoded and compared by the DTMF decoder with a code preset in the CPU.

Abstract: A method for establishing a communication link between a transmitter and a receiver for the purpose of relaying audio material derived from an existing source to a user desiring to remain unencumbered by the source apparatus comprises the steps of: placing the receiver unit into physical contact with the transmitter unit, powering up both transmitter and receiver units, and waiting for an indication of process completion before setting the receiver unit in place. The transmitter unit searches for a free rf communication channel, initiates transmission of user-chosen audio material over permitted broadcast bands, and programs the receiver unit with information allowing it to receive on the same channel. The receiver unit is lightweight, worn in the outer canal of the ear or on the head in the conventional manner. The entire programming and transmission process takes place automatically without further user intervention.

Abstract: The Swimmer's Ear is an electronic device that allows a swimmer or bather a means to safely listen to music while engaged in water activities. This invention is unique in that it allows universal use of any existing electronic devices equipped with a headphone jack. The two part Swimmer's Ear will attach itself via a headphone jack to an existing electronic device such as a CD or MP3 player and transmit to the listener the music or sound. The receiver will be powered by a power source inside a waterproof housing. This receiver will allow the listener to attach it to one's head by means of a clip for any swimming goggles or headband The materials used for this invention are currently in use such as: durable plastics, radio frequency transmitter and receiver, waterproof housings.

Abstract: A wireless mobile telephone capable of remitting picking up of an earphone in use-but combining with car hi-fi speakers, which mobile telephone applies an infrared transmission principle or a radio transmission principle to transmit its received and emitting signals to a car hi-fi set. Therefore, the car speakers can broadcast the sound of the other side of the mobile phone call in remitting picking up of the earphone. In this way, the mobile telephone not only has the advantage of remitting picking up of the earphone, but also can be extremely convenient in use by having no connecting wire between the mobile telephone and the car hi-fi set.

Abstract: An electromagnetic transducer includes a magnetic member, a suspension for supporting the magnetic member at a central portion of the suspension, a diaphragm connected to the suspension, a magnet for generating magnetic flux on the magnetic member, and a coil for generating alternating magnetic flux on the magnetic member.

Abstract: A method for distribution multiple users of a soundfield having positional spatial components is disclosed including inputting a soundfield signal having the desired positional spatial components in a standard reference frame; applying at least one head related transfer function to each spatial component to produce a series of transmission signals; transmitting the transmission signals to the multiple users; for each of the multiple users, determining a current orientation of a current user and producing a current orientation signal indicative thereof; utilising the current orientation signal to mix the transmission signals so as to produce sound emission source output signals for playback to the user. The soundfield signal can comprise a B-format signal which is suitably processed.

Abstract: A wireless headphone/speakers sound field control system, which includes a wireless signal receiver, a left speaker connected to the wireless signal receiver through a left differential amplifier and a left variable resistor, and a right speaker connected to the wireless signal receiver through a right differential amplifier and a right variable resistor, each of the left and right variable resistors being respectively connected to the positive pole of each of the left and right differential amplifiers, wherein a phase-shifting circuit is connected between the left differential amplifier and the right differential amplifier, having two sub-circuits each formed of a first capacitor, a variable resistor, a second capacitor and a resistor, each sub-circuit being connected in series between the right or left variable resistor and the left or right differential amplifier, the phase-shifting circuit enabling the differential amplifiers to have a dual signal input, so that left sound channel signal is inputted into

Abstract: A buoyant accessory device 10 for use in a spa 100 and in conjunction with a remote piece of audio equipment 200 to produce a stereophonic effect within the spa 100. The device 10 comprises a buoyant housing member 20 containing a receiver unit 15 which is coupled in a wireless fashion to a remote transmitting unit 16 directly connected to the remote piece of audio equipment 200.

Abstract: A wireless speaker system includes a remote speaker device cooperating with a transmission unit. The remote speaker device includes a remote wireless communication device connected to a speaker via a digital to analog converter. The remote speaker device also includes a keypad. The transmission unit comprises an analog to digital converter and a source wireless communication device. The transmission unit may be connected to a home audio source such as a stereo. The transmission unit may also include a control device for controlling the home audio source via the keypad. The wireless speaker system allows access to a home audio system from virtually any location.

Abstract: A wireless headset is provided, comprising: a microphone for receiving a first audio signal and for generating a corresponding microphone electrical signal; a portable receiver/transmitter electrically connected to the microphone for transmitting a first carrier frequency modulated according to the microphone's electrical signal; a remote receiver/transmitter for receiving and demodulating the modulated first carrier frequency to generate a first electrical signal corresponding to the microphone electrical signal, the remote receiver/transmitter also for transmitting a second carrier frequency modulated according to a second electrical signal; the portable receiver/transmitter also for receiving and demodulating the second modulated carrier frequency to generate a speaker electrical signal; and a speaker electrically connected to the portable receiver/transmitter for transforming the speaker's electrical signal into a second audio signal, one of the first and second carrier frequencies being above 900 Megaher

Abstract: A headphone apparatus includes a plurality of antennas for receiving an FM signal produced by FM-modulating a carrier signal with an audio signal, a plurality of tuning circuits for receiving reception signals of the plurality of antennas, a mixer circuit for causing tuning coils of the tuning circuits to be transformer-coupled to each other and for frequency-converting an output signal of one tuning circuit into an intermediate frequency signal, an FM demodulating circuit for FM-demodulating the intermediate frequency signal to produce the audio signal, and an acoustic unit for converting this audio signal into a sound. The directivity axes of the antennas are arranged perpendicularly thereby improving the reception of this headphone apparatus.