Abstract: An app installed on a smart device is caused to retrieve from a cloud-server a one-time use code. The one-time use code is then provided to a controllable device and the controllable device is caused to provide the one-time use code back to the smart device. The app causes the one-time use code provided back to the smart device by the controllable device to be authenticated. In response to the one-time use code being authenticated, the controllable device is bound to the app whereupon the controllable device is controllable through use of the app.

Abstract: Methods and apparatus are provided for automatically adjusting, by an audio device, the SPL of its audio output. As described herein, the SPL is adjusted based on detected ambient noise. According to aspects, audio device iteratively adjusts the SPL based on the ambient noise. According to aspects, the SPL is adjusted to be greater than the ambient noise by a threshold SPL amount. According to aspects, the audio device outputs sound in substantially a first direction and the microphone detects sound substantially outside of the first direction. The adjusted sounds are output by the audio device.

Abstract: An audio apparatus adaptable to a user position is provided. The audio apparatus may include a plurality of sub-modules placed at separate locations from one another, each sub-module of the plurality of sub-modules including a loudspeaker configured to generate sound and a communicator configured to perform communication. The first sub-module among the plurality of sub-modules may include a processor that processes an audio signal to be output as sound through the loudspeaker of the first sub-module, determines a user's position with respect to each of the plurality of sub-modules, and changes a state of the sound being output from the loudspeaker of the first sub-module in accordance with the determined position of the user.

Abstract: A method includes (a) transmitting a power-saving request; (b) calculating a baseline; and (c) calculating a payment based on a difference between an actual amount of electric power consumed by an electric power load and the baseline, wherein in (b), a first baseline for a first power-saving period during which power is saved in accordance with a first power-saving request transmitted at an immediately preceding timing is calculated based on an average of amounts of electric power consumed during periods in the same time zone as the first power-saving period on previous days, and a second baseline for a second power-saving period during which power is saved in accordance with a second power-saving request transmitted at a different timing is calculated based on an average of amounts of electric power consumed during periods in the same time zone as the second power-saving period on previous days.

Abstract: Provided are a method and device for controlling concurrent data transmission, and a terminal. The present disclosure relates to the field of mobile devices. The method for controlling concurrent data transmission is applied to a terminal and includes that: a data transmission request sent by a terminal system is received; when it is judged that the received data transmission request is an important data transmission request, the data transmission is permitted; and when it is judged that the received data transmission request is an unimportant data transmission request, whether this unimportant data transmission request is permitted is judged, and when the unimportant data transmission request is permitted, this unimportant data transmission is conducted; otherwise, the unimportant data transmission is prohibited.

Abstract: The present invention provides a method for automatically adjusting volume of an audio device, including steps of: S1, obtaining user identity information; S2, detecting an actual environmental volume; S3, determining user hearing condition according to the obtained user identity information, and adjusting a volume of the audio device according to corresponding relationship of user hearing condition, environmental volume and target volume of the audio device, so that the volume of the audio device reaches a target volume corresponding to the detected actual environmental volume and the determined user hearing condition. Accordingly, the present invention further provides an audio device for automatically adjusting volume. With the present invention, the volume of the audio device can be automatically adjusted according to environmental volume with respect to different users.

Abstract: One embodiment of the present invention is a method for performing channel access using a first station (STA) in a wireless communication system, comprising: a step of receiving a traffic indication map (TIM) bitmap; and a step of attempting channel access for a wireless medium in a first time period indicated by the first TIM bitmap. The first STA attempts channel access for the wireless medium in a third time period which is one of the second time periods indicated by the TIM bitmap in the event that the first STA senses an operation of a second STA relating to the wireless medium in the first time period.

Abstract: An apparatus includes at least one processor and at least one memory including computer code. The at least one memory and the computer code are configured with the at least one processor to cause the apparatus to determine at least one impulse response model pulse train from at least one audio signal, and to determine a presence of an object from the at least one impulse model pulse train.

Abstract: Automatically adjusting collection parameters for machines on a route in a collection device, based on states of the machines. For each machine on the route, the machine state is read into the collection device. The machine is included or excluded based on the machine state. The collection device is configured with first collection parameters that are configured based on the machine state. Data is collected from the machine based on the first collection parameters. The data is analyzed using parameters that are configured based on the machine, to determine alerts. Based on the alerts, data is selectively immediately collected from the machine based on second collection parameters that are configured based on the machine state and the alerts. Also based on the alerts, the technician is selectively prompted with the collection device to take a predetermined action and collect data from the machine.

Abstract: To determine the distance and/or acoustic quality between a mobile device and a base unit, an acoustic signal is received by a microphone in one of said mobile device and base unit. A correlation of a second signal with the received acoustic signal is determined. An acoustic quality and/or a distance between the mobile device and the base unit is determined based on one or more peaks in the result of the step of determining the correlation.

Abstract: Apparatus comprising at least one processor and at least one memory including computer code, the at least one memory and the computer code configured to with the at least one processor cause the apparatus to at least perform: determining at least one impulse response model pulse train from at least one audio signal; and determining an presence of an object from the at least one impulse model pulse train.

Abstract: Example apparatus and methods concern rigorous survey-plan based sensor data collection where physical survey locations are correlated to logical locations rather than being tightly coupled to physical map locations. An embodiment includes accessing a venue map and a survey plan associated with the venue map. A survey plan includes a survey path defined by one or more logical survey points. A logical survey point includes a unique co-ordinate free identifier, a description of a recognizable location in the venue, and a co-ordinate configured to register the logical survey point to the corresponding venue map. A surveyor surveys the venue using the survey plan. Surveying the venue includes following the survey plan and acquiring sensor fingerprints at sensor reading points along the survey path. A fingerprint observation data store is populated with survey points that are registered to the survey plan. Survey points include sensor fingerprint data and correlation data.

Abstract: A decrypting apparatus for decrypting cryptography data included in a packet includes a receiver, a key generator, and a decrypting section. The receiver receives a packet transmitted from an encrypting apparatus that executes an encrypting process. The key generator generates a key used for the encrypting process. The decrypting section decrypts cryptography data included in the packet received by the receiver with using the key generated by the key generator. In the decrypting apparatus, the packet received by the receiver includes packet information used for generating the key. The key generator generates the key with using the packet information.

Abstract: A method of operating a media player includes playing back audio media. During the step of playing back audio media, a maximum volume parameter is refined for the playing back of the media by the media player. The refining is based at least in part on the playing back of audio media during a time period prior to executing the maximum volume refining step. After a period of time, the maximum volume refining step is repeated. The refining is configured to prevent/minimize harm to hearing of the media player user based, for example, on the actual volume of media playback and time/duration profiles provided by occupational safety and/or other organizations.

Abstract: Systems and methods for distributed antenna system reverse path summation using signal-to-noise ratio optimization are provided. In one embodiment, a method for reverse path summation for a distributed antenna system comprises: normalizing an uplink noise floor for a plurality of remote antenna units of a distributed antenna system, wherein the uplink noise floor is normalized based on a first remote antenna unit having a lowest noise floor of the plurality of remote antenna units; and scaling an uplink output gain of each of the plurality of remote antenna units by a scaling factor, wherein the scaling factor attenuates the uplink output gain based on a composite maximum host peak power for a host unit coupled to the plurality of remote antenna units.

Abstract: Systems and methods for distributed antenna system reverse path summation using signal-to-noise ratio optimization are provided. In one embodiment, a method for reverse path summation for a distributed antenna system comprises: normalizing an uplink noise floor for a plurality of remote antenna units of a distributed antenna system, wherein the uplink noise floor is normalized based on a first remote antenna unit having a lowest noise floor of the plurality of remote antenna units; and scaling an uplink output gain of each of the plurality of remote antenna units by a scaling factor, wherein the scaling factor attenuates the uplink output gain based on a composite maximum host peak power for a host unit coupled to the plurality of remote antenna units.

Abstract: A method and apparatus is disclosed that controls voice call quality by networks and maintains the optimal voice call quality in a portable terminal. The voice call quality control method includes: identifying a network, connected to the portable terminal when the portable terminal enters a voice call mode, and a value for applying voice call quality of the network; changing a value for setting voice call quality, performed in the network, by the value for applying voice call quality; and controlling voice call quality of a voice call mode in the network by the altered value for setting voice call quality.

Abstract: A multifunction unit for control of multimedia equipment; the unit might act as a stand-alone device or being integrated into the multimedia equipment. Different individual combinations of individual objects enable for different functional capabilities. The multifunction unit for control of multimedia equipment has access to external sources via standard network interfaces and protocols.

Abstract: An apparatus for reducing power consumption of a receiver in a high-speed wireless communication system and a control method thereof are provided. The apparatus for processing a signal in a receiver of a wireless communication system includes a carrier sensor configured to sense a carrier used in the wireless communication system, a decoder configured to decode the detected carrier signal to a signal and data, and a controller configured to control supplying power and a clock only to the carrier sensor during carrier sensing, and supplying power and a clock to an overall receiver when a carrier is sensed.

Abstract: A method and apparatus for controlling transmissions of data via an enhanced dedicated channel (E-DCH) are disclosed. A list of available transport format combinations (TFCs) is generated based on a plurality of dedicated channel medium access control (MAC-d) flows. An enhanced uplink medium access control (MAC-e) protocol data unit (PDU) is generated using a TFC which is selected from the list of available TFCs. The MAC-e PDU is forwarded to a hybrid-automatic repeat request (H-ARQ) process unit for transmission. The list of available TFCs is continuously updated by eliminating and recovering TFCs based on remaining E-DCH power, an E-DCH transport format combination set (TFCS), a power offset of a highest priority MAC-d flow that has E-DCH data to transmit, and a gain factor for each TFC.

Abstract: A system and method for extending alerts for a wireless device. A media player equipped with a wireless ringer is linked with a media player through a wireless connection. Playback of media content on the media player is interrupted to play an alert in response to the wireless ringer receiving an indication of an incoming communication from the wireless device. The alert is played on the media player in response to interrupting playback of the media content in order to inform a user of the incoming communication.

Abstract: The invention relates to a method for setting an operating parameter in a peripheral IC. In this method, the operating parameter is transmitted from a central IC via a bus connection to the peripheral IC. The method is characterized in that the operating parameter is initially buffered in a preregister in the peripheral IC, and in that the buffered operating parameter is transferred into a working register only if a transfer signal is sent from the central IC via the bus connection. This method has the advantage that, for example in the case of rapidly changing receive conditions in a send/receive unit, adjustment of the send or receive gain setting is very flexible, and it is easy to avoid an incorrect setting due to a detected signal fluctuation. The invention also relates to a device for carrying out said method.

Abstract: A handoff method between a source network to which a terminal is connected in order of a Base Station (BS) and an Access Service Network (ASN), and a target network to which the terminal is connected in order of a Packet Data Service Node (PDSN), a Packet Control Function (PCF) and an Access Network (AN). The terminal sends a handoff request message with AN information of the target network to the ASN via the BS. The ASN forwards the handoff request message to the PCF via the PDSN using the AN information. Upon receipt of the handoff request message, the PCF sends a request for session information to the ASN via the PDSN. The PDSN sends a request for context information to the ASN. Upon receipt of the session information request and the context information request, the ASN transfers the context information to the PDSN and transfers the session information to the AN via the PDSN and the PCF.

Abstract: According to one embodiment, a voice mail apparatus is connectable to a telephone exchange, records a voice message sent from a caller telephone terminal in a mail box corresponding to each telephone terminals, and reproduces the voice message in response to a reproduction instruction. The voice mail apparatus stores in a memory an audio file having approximately the same signal level as the voice message. The voice mail apparatus inputs the audio file in a voice processing device when a request for processing the voice message is given from a request source telephone terminal. The voice mail apparatus controls the processing gain such that the signal level output from the voice processing device becomes a prescribed level, while performing muting for the request source telephone terminal. The voice mail apparatus inputs the voice message to the voice processing device after completing controlling of the processing gain.

Abstract: A method and system for providing low-noise, high-fidelity wireless Bluetooth earphones with control operation either at the earphone or the player that operate to control the volume and other functionality from either location in a seamless manner and provide probe volume control display regardless of which location is used.

Abstract: An apparatus for reducing power consumption of a receiver in a high-speed wireless communication system and a control method thereof are provided. The apparatus for processing a signal in a receiver of a wireless communication system includes a carrier sensor configured to sense a carrier used in the wireless communication system, a decoder configured to decode the detected carrier signal to a signal and data, and a controller configured to control supplying power and a clock only to the carrier sensor during carrier sensing, and supplying power and a clock to an overall receiver when a carrier is sensed.

Abstract: Aspects of a method and system for closed loop power control in wireless systems are provided. In this regard, an output power of an amplifier may be measured and an indication of the measured power may be compared to a reference signal. The results of the comparison are utilized to generate an error correction factor. The gain of a preamplifier may be adjusted utilizing the error correction factor, where the output of the preamplifier may be input to the amplifier. The error correction factor may be generated via a proportional integral derivative controller. The gain of the preamplifier may be adjusted via at least one control signal, where the at least one control signal may be generated based on a reference control word and the error correction factor. The indication of the measured power and the reference signal may be time aligned.

Abstract: A signal receiver circuit including a transmission gate, a pull-low unit, a boost capacitor, a voltage division unit, and a receiver unit is provided. The transmission gate determines whether to conduct an input signal according to a control signal. The pull-low unit determines whether to pull down the voltage at a terminal of the boost capacitor according to the control signal. The boost capacitor boosts the input signal of the receiver unit. The voltage division unit sends a divided voltage to another terminal of the boost capacitor according to the control signal. When an input signal is received, the boost capacitor boosts the input signal, for overcoming low current issue caused by high threshold voltage of MOS transistors and accordingly the receiver unit achieves full swing.

Abstract: An intelligent automatic volume control technique (100) for a communication device is provided that takes a measurement of the background audio environment at the time a user manually selects the volume (102, 104). A user preference is established for the volume setting relative to the background audio level being experienced (106). The informational relationship is stored and used for automatic volume control (108). When the background noise changes (110), the automatic volume control makes an intelligent decision on changing the volume (116). The current background noise level, the initial user volume setting and the background noise level when that volume was set are all used in the volume change decision making process.

Abstract: A mobile terminal and sound pressure control method using sound saturation sensing are disclosed. The mobile terminal has a target digital value of an adequate output sound pressure level at a maximum volume level. The sound pressure control method includes: determining a digital value corresponding to a maximum output sound pressure level of an externally sourced audio material, wherein the externally sourced audio material is being replayed for the first time at a preset gain at the maximum volume level; comparing the determined digital value with the target digital value; adjusting, if the determined digital value is not equal to the target digital value, the gain so that a digital value corresponding to the adjusted gain is equal to the target digital value; and storing the adjusted gain as a gain value associated with the maximum volume level for the externally sourced audio material.

Abstract: A method for identifying a remote radio unit in a communication system comprises a plurality of remote radio units communicating with a central unit and pattern providing means for providing information about dedicated gain change patterns of the remote radio units. The method comprises receiving a signal from a station by a remote radio unit of the plurality of remote radio units. The method also includes changing the gain of at least one remote radio unit according to a dedicated gain change pattern of the at least one remote radio unit. The method also includes detecting a gain change pattern for the received signal and identifying the remote radio unit by comparing the detected gain change pattern with information about dedicated gain change patterns of the remote radio units provided by the pattern providing means. An example may be locating a station, such as a user equipment, in a distributed radio system.

Abstract: The present invention provides a communication assistance process that is performed by a communication assistance device connected to a plurality of user terminals via a network. During a communication (or video) conference call, when assistance data associated with a topic in the conference is provided to a plurality of user terminals in the form of a voice data, the communication assistance process adjusts the sound volume of voice data in the assistance data if it was determined that voice data is included in the communication data received from the plurality of user terminals, and if voice data is also included in the assistance data, the assistance data that includes sound volume adjusted voice data is then provided to the plurality of user terminals. Accordingly, the communication assistance process allows communications in a conference system to proceed smoothly.

Abstract: An apparatus and method for down-link multiple-antenna transmission in a wireless communication system is provided wherein a base station section comprises: a down-link specific physical channel unit, a second common pilot channel unit, a beam weighting unit of common pilot channels, a multiplexing and summing unit, a down-link specific physical channel weighting unit, a specific physical channel and second common pilot channel multiplexing unit, an antenna array unit, a multiple-beam weight vector set unit, up-link specific physical channels, and a feedback bit information unit; and a service cell section or mobile station section comprises: an antenna unit, a channel evaluating unit, a beam selection unit, and a beam quantizing unit. The space characteristics of the physical channels are utilized reasonably. Accordingly, a beam gain is obtained, interference is suppressed effectively, and the apparatus is easy to operate.

Abstract: A mixer circuit of the present invention includes a gain stage configured to receive a first signal and a modulated bias current, and in accordance therewith, produce an output signal, the gain stage generating a first current and receiving the modulated bias current from a bias circuit on a common node. The bias circuit includes an input configured to receive a second signal, and in accordance therewith, generate the modulated bias current. The mixer circuit also includes a current shunt circuit for generating a second current. The first current, the second current, and the modulated bias current are coupled to the common node. In one embodiment, the first signal is approximately a square wave, and the frequency of the first signal is one-third the frequency of the second signal.

Abstract: A proximity detector for use in a mobile telephone having at least a microphone and a loudspeaker operatively connected to a signal processor is presented. The proximity detector includes data processing and control modules having a module for controlling the signal processor for activating the loudspeaker to reproduce an acoustic control signal. A correlator correlates a control signal received directly by the microphone and a control signal being reflected from a user of the telephone and then received by the microphone to determine the distance between the telephone and the user. A signal level controller controls the signal processor to vary the signal level of an audible signal reproduced by the loudspeaker proportionally to the determined distance between the telephone and the user.

Abstract: A body device has a dual mode function and includes: a play-back mode setting unit for selecting a plurality of play-back modes such as a CD mode, an AM mode, an FM mode and so on; and a control unit for controlling the play-back mode setting unit so as to select an arbitrary one of the play-back modes in response to a predetermined operation on the front side or the rear side. When an operation to select and demand the FM mode on the rear side in a dual mode while the front side is in the AM mode, the control unit inhibits the FM mode selection on the rear side so that the AM mode on the front side may not be changed into the FM mode.

Abstract: A repeater for use in a two way communication system for retransmitting information between a first device and a second device to help ensure reliable two way communication between the devices, comprising: a transmitter/receiver, the transmitter/receiver receiving signals from the first and second devices and transmitting the received signals for reception by the respective first and second devices; and further wherein a direct communication path for the information between the first and second devices is provided, the direct communication path being intermittently unreliable, the repeater providing an additional path for the information between the first and second devices; the repeater being spaced from said first and second devices by a specified distance, said specified distance being significantly less than a theoretical maximum communication distance thereby to ensure communication reliability.

Abstract: An apparatus for processing a remote controller signal and a method using the same, and in particular to an apparatus for setting and generating a melody for a remote controller input signal and a method using the same capable of generating a melody corresponding to a predetermined inputted key, whereby melodies for each key are set, the melody corresponding to the predetermined inputted key is generated, thus a viewer confirms the key is exactly inputted, and furthermore, the viewer sets the melody corresponding to the predetermined key, and the melody is generated when the key is inputted, and thus the viewer is not bored because of an operational delay of a specific function and can confirm a preferred key is inputted.

Abstract: An audio system has a playing circuit for generating an audio signal, at least a speaker electrically connected to the playing circuit for playing sound according to the audio signal, a detector for detecting a communication signal of mobile phones or automobile phones and generating a corresponding mute signal, and a mute circuit electrically connected to the detector and the playing circuit for receiving the mute signal. The mute circuit stops the speaker from playing sound after the mute circuit receives the mute signal.

Abstract: A proximity detector for use in a mobile telephone apparatus, wherein the phone has at least a microphone (1) and a loudspeaker (5) operatively connected to signal processing means (2,3,4). The proximity detector comprises data processing and control means (6) including means for controlling the signal processing means (3,4) in order to activate the loudspeaker for reproducing an acoustic control signal, correlating means for correlating the control signal received directly (Ddirect) by the microphone (1) and the control signal being reflected (D1+D2) from a user (13) of the phone (9) and then received by the microphone (1) for determining the distance (D1≈D2) between the phone (9) and the user (13), and signal level control means for controlling the signal processing means (3,4) in order to varying the signal level of an audible signal reproduced by the loudspeaker (5) proportionally to the determined distance (D1≈D2) between the phone (9) and the user (13).

Abstract: A handheld remote controller for a televisor that automatically prefixes a single-digit program channel selection, typically between 2 and 9, with a leading zero in response to a prolonged single digit keybutton actuation exceeding about 3 seconds or by an intended ersatz key entry, such as a star “*” key, either preceding or following the channel digit key entry. A HUSH control provides audio volume reduction intermediate between mute and normal volume levels, obtainable by pressing a HUSH keybutton, or automatically hushed concurrent with a program channel change. Maintaining a televisor's necessitous channel 3 or 4 selection when used in conjunction with a cable box, VCR or other intermediate device is assured by concurrently sending a reiterative channel 3 (or channel 4) tuning command to the televisor whenever a program channel change command or other function signal is dispatched to the cable box, VCR or other television signal tuning apparatus.

Abstract: An apparatus (100) is disclosed for automatically controlling the volume level of an audio signal transmitted to or received by a mobile station and/or terminal within a telecommunications network, the apparatus including a noise measuring device (102), a volume controller (104) communicably coupled to the noise measuring device, and a memory module (108) communicably coupled to the noise measuring device. In a wireless telecommunications network, the memory module may comprise a subscriber identity module (SIM) and contain preferred volume levels for given levels of noise for that particular subscriber.

Abstract: In one embodiment, a cordless telephone according to the invention includes a base unit, including a paging mechanism, and a handset, including an alerting mechanism responsive to the paging mechanism. At least one of the base unit and the handset includes a page adjusting mechanism to affect an alerting signal output from the alerting mechanism based on a condition. Thus, the paging signal is adaptive to increase the opportunity for a user to determine the location of a misplaced handset. In another embodiment, a cordless telephone is equipped so that the base unit can provide an indication related to a distance between the base unit and the handset. In yet another embodiment, a cordless telephone is equipped so that the paging mechanism is adjusted based on user control. In a further embodiment according to the invention, a method is provided for affecting an alerting signal output by an alerting mechanism of a cordless telephone handset.

Abstract: A comparing unit 18, when a radio unit 1 receives a radio signal, compares an ambient noise level detected by a noise sensor 17 with a preset threshold value. If the ambient noise level is smaller than the threshold value, the comparing unit 18 outputs a set value signal SH, and sets a receiving voice level set value of a receiving voice level setting unit 19 to “SMALL”, a transmitting voice level set value of a transmitting voice level setting unit 20 to “LARGE” and a calling sound level set value of a calling sound level setting unit 22 to “SMALL”, respectively.

Abstract: An environmental sensor distinguishes between a plurality of different ambient acoustic environments and communicates with an audio gain circuit which automatically adjusts the audio characteristics of the speaker and microphone of a wireless communications assembly for more optimum audio performance. The wireless communications assembly preferably includes a hands free adapter coupled to a wireless communications device such as a cellular telephone. The adjustments to the audio characteristics are according to predetermined settings for the identified ambient acoustic environment which are preferably stored in memory associated with the audio gain circuit. In this manner, the audio characteristics are automatically adjusted for the actual ambient acoustic environment that the wireless communications assembly is operating in.

Abstract: A radio receiver with a potentiometer as the volume control is described, wherein an unintentional displacement of the potentiometer during the switched-off phase becomes effective only with a delay when the radio receiver is switched on by means of a switch which is separate from the potentiometer.

Abstract: A radio receiving terminal has a receiving circuit for first and second radio signals, the first receiving radio signal including a call number; a judging circuit for judging whether or not the first radio signal received by the receiving circuit includes a call number which corresponds to its own call number; a notifying circuit for externally notifying that the terminal has received the first radio signal including the call number which corresponds to its own call numbers when the judging circuit detects a correspondence therebetween; a remote controller for instructing that the notifying of the notifying circuit be stopped second through a second radio signal; and a circuit for controlling the receiving circuit a transmission of to receive the second radio signal from the remote controller instead of the first signals when the judging circuit detects the correspondence.

Abstract: A new Headphone Remote Control for Operating an Entertainment Center for offering a headphone with a fully equipped remote control for privately operating and controlling an entertainment center. The inventive device includes an antenna receiver, a channel selector control, a locator speaker, a locator over-ride circuit, a pressure switch, and a head phone transmitter. In use, the Headphone Remote Control for Operating an Entertainment Center 10 is located by clapping one's hands together. When the device is found and placed upon one's head, the pressure switch 28 de-energizes the locator speaker 24 and can selectively energize the vibrator signal 25 which will signal the user when someone wants their attention. While wearing the device, for example, the user is able to watch and listen to the TV while others around him do not hear the TV, but rather, others can concurrently listen to the STEREO instead.

Abstract: An audio signal transmitting apparatus including, an audio transmission signal generating unit for adding an error correction signal to a digital audio signal and encoding and interleaving the result to generate an audio transmission signal; a continuous signal generating unit which generates a continuous signal by repeating the digital control signal to be used for the reproduction of the digital audio transmission signal a predetermined number of times; a multiplexing unit for multiplexing the audio transmission signal and the continuous signal to generate a multiplexed signal; a modulated signal generating unit for modulating the multiplexed signal by a predetermined digital modulation method to generate a modulated signal within a predetermined frequency band; and an optical signal transmitting unit for converting the modulated signal to an optical transmission signal and transmitting the same.

Abstract: In a portable telephone which transmits and receives data having at least one of a voice signal and an image datum which are radio signals, the controlling device controls an amplifier so that a user can hear, at a first state that an ear is not near to a speaker, the voice from the speaker when the data from a base station includes a discrimination datum which represents the image datum. The controlling device controls the amplifier so that the user can hear, at a second state that the ear is near to the speaker, the voice from the speaker when the data from the base station does not include the discrimination datum which represents the image datum.