261results about "Line monitoring circuits" patented technology

A communication terminal 110A that can redial without imposing much emotional burden on the other party of the call even if the call is put on hold and the party who put the call on hold behaves thoughtlessly includes: a control unit 200 substantially implemented by a computer, for central control of communication terminal 110A, and a call communication device 204 for wireless voice communication with another terminal during a call with another terminal, a data communication device 206 for wireless data communication with another terminal and with management server 106, an input device 212 used by the user for operating communication terminal 110A, a time counter 214 for counting date and time, a display device 210, a sound input / output device 208, and a storage 202 for storing various pieces of information, all connected to the control unit 200.

Systems and methods are provided for monitoring telephone calls that are placed on hold. The telephone calls may be between user electronic devices and call centers, such as customer service departments. In some embodiments, the electronic device can monitor an on-hold telephone call using a background process, which may free up a user interface of the electronic device for one or more non-phone-related tasks. The electronic device can monitor the telephone call for an indicator that a live operator is or will soon be present on the telephone call. Responsive to detecting the indicator, the electronic device can alert the user and allow the user to take control of the telephone call. In some embodiments, the electronic device can obtain information about the call center, such as expected on-hold wait-times, to determine whether an on-hold call should be monitored.

The invention discloses a method and a device for detecting a microphone in a mobile terminal and a mobile terminal. The method comprises the steps of controlling an audio output device in the mobile terminal to play a preset side of ultrasonic detection signals; acquiring sound signals acquired by the microphone, and converting the sound signals into corresponding digital signals; and determining a datum threshold corresponding to the microphone, and detecting whether the microphone is abnormal or not according to the digital signals and the datum threshold. The method disclosed by the invention realizes simple detection for the microphone, error detection carried out on the microphone by a user because of being unprofessional is avoided, the user can carry out anomaly detection at any time without going to aftermarket, thereby facilitating use of the user, and improving the user experience.

A system for determining the status of an answered telephone during the course of an outbound telephone call includes an automated telephone calling device for placing a telephone call to a location having a telephone number at which a target person is listed, upon the telephone call being answered, initiating a prerecorded greeting which asks for the target person and receiving a spoken response from an answering person and a speech recognition device for performing a speech recognition analysis on the spoken response to determine a status of the spoken response. If the speech recognition device determines that the answering person is the target person, the speech recognition device initiates a speech recognition application with the target person.

A portable communication device includes a status indictor in the form of a single multicolor generating LED. The single LED indicates radio channel and battery status. The LED is responsive to a menu button press to indicate a current channel by color. Channel change is indicated by changing to another color. The LED is also responsive to a power button on the portable communication device to generate predetermined colors associated with battery status. The use of a single LED eliminates the need for knobs or a display as part of the status indicator of the portable communication device.

A first information indication is removed from a display screen of a liquid crystal display device, when a screen size display mode is switched into a full-screen display mode where only second information is displayed on the display screen. When a notification mode for notifying the first information by using a notification unit is selected / set by operating a key unit, this first information is notified by employing a light-emitting diode for notifying a message reception, an LCD back light, a KEY back light; or a vibrator.

According to some embodiments, a mute status reminder is provided for a communication device.

A system and apparatus for enabling communications devices to recognize call progress tones that may be used in foreign countries. The call progress tone detection system includes a communications device (50) having one or more frequency decoders (113) for determining the frequency of call progress tones, a cadence decoder (126) for determining the on / off pattern for the call progress tones and a table (122) for storing the call progress tone frequencies and the cadences. Recognition of call progress tones is accomplished by enabling the communications device (50) to receive one or more foreign call progress tones, enabling the user to associate the type of call progress tone for each call progress tone received and storing each call progress tone to a table (122) for later cross reference when initiating a call.

A method and apparatus for detecting whether a remote party has added a secondary telephone destination to a telephone call, for example through the activation of three-way calling service, conference calling or two lining bridging, by identifying an echo characteristic to the telephone connection between the local and the remote telephone and monitoring the echo characteristic to determine whether there is a significant change. The addition of a secondary telephone destination can be verified by continuing to monitor the echo characteristic to determine whether it has returned to its original value.

A sensor device to detect an audio wave and determine whether the audio wave is a gunshot is provided. The sensor device may include microphone, analog-to-digital converter (ADC), microcontroller, and switch. The ADC may convert audio waves received from microphone into a digital signal. The microcontroller connected to the ADC may compare the digital signal of the audio waves with predetermined audio wave to determine whether the audio waves meet audio threshold parameters. The switch operatively connected to the microcontroller may transmit a trip signal to a predetermined emergency management and response system upon the microcontroller determining that the audio waves meet the audio threshold parameters. A gunshot detection system including the sensor device and a method of detecting a gunshot are also provided.

The specification describes systems, and operation of systems, that allows a parent or other responsible party to monitor the mobile device activities of a child. In addition, it optionally allows the parent to dynamically control the mobile device activities of the child. It relies on software, or a network adjunct, that links a mobile device to a station set or mobile phone under the control of the parent. Calling traffic to and from the mobile device may be routed to a receiver at a location monitored by the parent. In preferred embodiments, software is designed to allow the parent to intervene in the communications of the child. The intervention may take a variety of forms, such as interrupting a call in progress, terminating all call activity, interrupting or terminating Internet access. Where the mobile device is provided with pre-programmed restraining software, the intervention may be to modify the restraining software to add new restraints.

A method is provided for establishing a telephone call between a trusted Internet Protocol (IP) telephone and an untrusted device. The method includes receiving a call initiation request from the untrusted device that indicates a desired communication with the trusted IP telephone. The method evaluates the call initiation request, and establishes a telecommunication link between the untrusted device and the trusted IP telephone in response to a positive evaluation of the call initiation request.

A mute feature selection reminder for use in connection with a communication device is provided. The mute feature selection reminder is activated in response to the detection of a voice signal local to the communication device while the mute feature of a communication device is activated. The mute feature selection reminder may comprise an output in the form of a visual indicator and / or an audible indicator.

The invention herein is fallback function communications device comprised of a microprocessor, utilized to perform a predetermined operation and processing of a predetermined input signal and then output a corresponding signal, as well as a minimum of one relay circuit having an amplifier circuit and a relay. The terminal at the first side of the relay is connected to the telephone line tip / ring terminal, while the terminal at the second side of the relay is connected to the Public Services Telephone Network (PSTN) tip / ring terminal of the microprocessor. An off-hook detection circuit is connected to the PSTN tip / ring terminal and also connected to the ring detection terminal of the said microprocessor. A dummy load circuit is connected to the tip terminal and the ring terminal of the PSTN. As such, in the event of Voice Over Internet Protocol (VOIP) system failure, the present invention is capable of automatically switching to the PSTN and thereby maintain telephone system operation.

When a call is on hold due to an operating input from a key input unit, a music signal processing unit plays back music stored in a memory card and transmits it as a holding tone via a audio signal switching unit and a wireless signal processing unit to a party on the other end of the line, so that a portable telephone capable of providing music of high tone quality and superior general quality as the holding tone to the party on the other end of the line placed on hold with no addition of any new device is provided.

The present invention is suitable for the technical field of communication, which provides mobile phone caller prompting method, system and TV set. The mobile phone caller prompting method comprises the following steps: a. when a mobile phone has a call, caller signals are sent; b. when the caller signals are received by the TV set, caller prompting information is given to remind a user to have a call. The technical scheme provided by the present invention enables the mobile phone to be able to send prompting information by a TV set display screen or loudspeaker when a call is coming to prompt the user to have a call, so the condition that the user lacks to receiving a call because of watching TV is avoided, and the product is more humanization.

A muting device includes an external sound input unit that receives an external sound and an internal sound input unit that only receives an internal sound. The external sound received by the external sound input unit has a component, which corresponds to the internal sound received by the internal sound input unit, removed therefrom. Only when the signal level of a specific kind of external sound sampled from the external sound having the internal sound component thereof removed therefrom is equal to or larger than a certain signal level, the internal sound is automatically muted. Consequently, there is provided a muting device that autonomously and accurately mutes an internal audio output responsively to a specific external sound such as a telephone ring while being unaffected by an internal sound.

The invention relates to a call state detection method and device. The method comprises the steps of obtaining a far end signal; superposing an ultrasonic signal on the far end signal to obtain a hybrid signal, and playing the hybrid signal; obtaining a near end signal collected by a microphone unit; determining a first signal segment in the hybrid signal and a second signal segment in the near end signal according to the ultrasonic signals; calculating a correlation value between the first signal segment and the second signal segment; and when the correlation value is smaller than a preset correlation value threshold, determining that a call state is a double-talk state. According to the scheme, the hybrid signal and the near end signal are aligned through the ultrasonic signal superposed in the far end signal and the ultrasonic signal contained in the near end signal collected by the microphone unit, and whether the call state is the double-talk state or not is judged through the correlation value between the aligned near end signal and hybrid signal, thereby improving the accuracy of detecting the double-talk state.

The method is used in a system comprising: terminal management system, central office apparatus and VDSL terminal device. It comprises: configuring the management virtual local area network (VLAN) on the central office apparatus; configuring the management interface on the central office apparatus, and adding the management interface into VLAN; adding customer's port corresponding to the VDSL terminal device into the port list of VLAN; after VDSL terminal establishes a connection, the terminal management system makes far-end management for the VDSL terminal device via the management VLAN. The invention also provides a system thereof.

The invention discloses a mobile terminal alarm clock prompt cancelling method and a mobile terminal, and relates to mobile terminals. If an operation signal is received during set time previous to an alarm clock prompt moment, a user already starts to operate the mobile terminal, as a result, an alarm clock prompt is no longer needed, and the most recent alarm clock prompt can be canceled. Therefore, the current prompt is canceled previous to the alarm clock prompt moment, and the use feeling is improved for the user.

The invention discloses a voice activity detection method in a communication-terminal double-microphone denoising system and an apparatus thereof. The method is characterized by firstly, training a neural network: selecting a training sample, extracting a characteristic and acquiring a corresponding voice activity detection result; using the characteristic and the corresponding detection result to train the neural network; secondly, based on the trained neural network, carrying out voice activity detection: using primary and secondary microphones of a communication terminal respectively to collect voice signals with noises to be detected; extracting a characteristic from the collected voice signals with noises, sending the characteristic to the trained neural network and using the neural network to output a voice activity detection result. The characteristic comprises that a sub-band mutual channel energy difference is related to a normalized mutual channel. According to different noise environments, a parameter is adaptively adjusted and the voice activity detection is performed. A problem that an existing voice activity detection method can not adapt to changes of a noise environment so that performance is decreased is solved. Voice activity detection accuracy under a complex noise environment is increased.

The method operates in a telecommunications network having at least one subscriber terminal corresponding to at least one subscriber at a subscriber location. The method implements a message waiting indication service for indicating the presence of a data message corresponding to the at least one subscriber in a data message platform. The method begins in step 100 by receiving the data message at the data message platform. A message waiting signal is generated as shown in step 102. The message waiting signal is transmitted to the telecommunications network as shown in step 104 and a message waiting indication signal is generated at the telecommunications network as shown in step 106. Finally, a message waiting indication signal is transmitted to the subscriber terminal in response to the message waiting signal.

The present invention discloses communication terminal and playing ringing back tone method in calling, to make calling user capable of to customize personalized ringing back tone, referring to communication technology. The present invention utilizes communication terminal to oneself sound track switching ability and playing local ringing ability closing speech-sounds channel in calling originating for preventing playing network side ringing back tone' in calling procedure playing local predetermined ringing until called terminal beginning listening or calling overtime, then reopening speech-sounds channel to make calling terminal communication with called terminal or network side informing calling terminal cue tone that the opposing side unable listening. Said invention presets local ringing respectively to different calling number or group, to make calling terminal not only capable of configuring required ringing back tone by itself, but also hearing different ringing back tone in calling different user.

Disclosed is an improved three-way call detection system and method for use with a telephone management system. Specifically, three-way call detection circuit monitors the active communications of the telephone management system for pulses of energy indicative of a three-way call. A Fast Fourier Transform (FFT) is computed for all pulses of energy with time domain characteristics consistent with a click, and the phases of the components that comprise the pulse are analyzed. If the phases are generally linear (i.e., if the phases have a common group delay or phase delay), then the pulse is a three-way call click and appropriate action (e.g., monitoring the call, terminating the call, warning the caller, etc.) is initiated. The three-way call detection circuit of the present invention is also compatible with other three-way call detection techniques, which may be utilized as confirmation of a three-way call event.