Did You Know...
...that the Band-Aid Bandage was invented by a Johnson & Johnson employee whose wife had cut herself? Earl Dickson's wife was rather accident prone, so he set out to develop a bandage that she could apply without help. He placed a small piece of gauze in the center of a small piece of surgical tape, and what we know today as the Band Aid bandage was born!
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| Number | Title | Issue Date |
| 8064591 | Sound pick-up method and device, in particular for handsfree telephone terminals The invention relates to processing signal for improving a sound pick-up in telephone and/or videophone units. The inventive method consists in comparing (13) a signal transmitted by a unit microphone (Mic) with a threshold low value (THR_LOW) and in amplifyi... | 11/22/2011 |
| 7778407 | Statistical approach to automatic gain control for managing audio messages over a network A system, method, and apparatus are directed towards managing an audio message, such as a Voice over Internet Protocol (VOIP) message over a network. The invention employs a statistical mechanism to automatically optimize a gain control for setting a volume of an au... | 08/17/2010 |
| 7443812 | Voice and data exchange over a packet based network with AGC A signal processing system which discriminates between voice signals and data signals modulated by a voiceband carrier. The signal processing system includes a voice exchange, a data exchange and a call discriminator. The voice exchange is capable of exchanging voic... | 10/28/2008 |
| 7388955 | Combine audio and ringing mode A circuit where the same amplifiers and the same volume adjustment circuitry are used for the ringer mode as well as for the audio mode of a mobile phone is achieved. The volume adjustment in the audio and ringer mode is provided by a precise amplitude setting via t... | 06/17/2008 |
| 7366296 | Network support for voice path signal strength balancing Embodiments of the method and system provide for automatic balancing of audio signal strength levels on voice paths between first and second parties in a telecommunication system. The method in an embodiment may have the steps of: checking for a subscription to audi... | 04/29/2008 |
| 7333604 | Adaptive notification of an incoming call in a mobile phone A device and method for handling announcement of an incoming call in a telephone handset at least in part in accordance with a measured ambient noise level is provided. In some embodiments, the disclosed device includes an audio signaling mechanism such as a ringer ... | 02/19/2008 |
| 7274322 | Systems and methods for automatic gain control for multichannel receivers Apparatus and methods for performing automatic gain control in a radar system. One embodiment of the system includes an attenuator that controls gain of signals received from a radar receiver. A digital signal processor determines coarse gain correction based on dig... | 09/25/2007 |
| 7233659 | Message playback concurrent with speakerphone operation A digital telephone answering device having speakerphone capability allows a recorded message to be played back and heard by the far-end party as well as over the local speakerphone by the near-end party during speakerphone operation as if it were a normal receive s... | 06/19/2007 |
| 7231037 | Active audio compressing in telecommunication An output reducing system for a telephone system, e.g., implemented in a headset, includes an input line and an output line, wherein the input line transmits an incoming signal to an output transducer and the output line transmits an outgoing signal from an input tr... | 06/12/2007 |
| 7221386 | Camera for communication of streaming media to a remote client A Mobile Streaming Camera is operable by an Operator for communication with one of more Remote Clients through a wireless network allows compressed communication of video and audio in both directions together with voice signals in a telephony type communication. The... | 05/22/2007 |
| 7210633 | Self-compensating speaker volume control system for data collection terminal A data collection terminal is provided with an audible feedback system that self-compensates for changes in ambient noise levels. The data collection terminal comprises a central processor adapted to execute stored instructions and having at least a display, a keybo... | 05/01/2007 |
| 7202742 | Digital amplification device A digital amplification device has a digital amplifying unit, a low-pass filter for integrating a digital signal, and a current feedback circuit that is transformer-coupled to the low-pass filter and feeds back current to the differential input terminal. A signal re... | 04/10/2007 |
| 7177417 | Telephone handset with user-adjustable amplitude, default amplitude and automatic post-call amplitude reset The present invention is directed to a telecommunication device, usable with standard telecommunication equipment, that automatically resets one or more acoustic parameters to predetermined levels prior to the initiation of the next communication session. ... | 02/13/2007 |
| 7139393 | Environmental noise level estimation apparatus, a communication apparatus, a data terminal apparatus, and a method of estimating an environmental noise level A level of a sound signal including a voice signal and an environmental noise signal is detected and a level (power level) is sampled in response to a clock signal. It is detected whether the presently sampled level increases from the previously sampled level. An en... | 11/21/2006 |
| 7092365 | Voice and data exchange over a packet based network with AGC A signal processing system which discriminates between voice signals and data signals modulated by a voiceband carrier. The signal processing system includes a voice exchange, a data exchange and a call discriminator. The voice exchange is capable of exchanging voic... | 08/15/2006 |
| 7092513 | Limiting maximum gain in duplex communications devices including telephone sets Duplex communication methods and systems with maximum gain limiting such as in telephone handsets and speaker phones are disclosed. The communications system such as a telephone set may generally include a digital signal processor (DSP) having a receive and transmit... | 08/15/2006 |
| 7085371 | Push-button signal receiving device and a gain control method A push-button signal receiving device and a gain control method whereby error in validity determination of a received signal that accompanies the insertion of an AGC circuit can be prevented. An input bush-button signal is amplified by amplifying circuit and separat... | 08/01/2006 |
| 7079645 | Speaker volume control for voice communication device A system and method for adjusting the volume level of a communications device in response to ambient noise. In one embodiment, ambient noise is sampled once and the volume of a speaker associated with the communications device is increased to, and maintained at, a l... | 07/18/2006 |
| 7054450 | Method and system for ensuring audio safety The invention concerns a method (200) and a system (100) for ensuring audio safety in an audio device (110). The system includes a processor (112), a sensor (116), an analog safety circuit (114) and a first feedback loop ( | 05/30/2006 |
| 7046792 | Transmit/receive arbitrator The amplitudes of a signal on the microphone input of a telephone and a signal on the line input of the telephone are compared with each other and with two thresholds. The comparisons are sampled and the samples control an up-down counter. The count in the counter i... | 05/16/2006 |
| 7023984 | Automatic volume adjustment of voice transmitted over a communication device A system and method for adjusting the volume level of a communications device in response to a voice volume/ambient noise relationship. Ambient noise and voice volume are sampled and compared to a predetermined ambient noise to voice volume relationship. Voice volum... | 04/04/2006 |
| 7006624 | Loudspeaker volume range control The present invention relates to a loudspeaker volume control arrangement for a telephone having a loudspeaker and a microphone which controls the loudspeaker volume of the telephone based on the estimated distance between the microphone and the loudspeaker. ... | 02/28/2006 |
| 6978009 | Microprocessor-controlled full-duplex speakerphone using automatic gain control A near full duplex portable handset speakerphone comprises: a microprocessor; a hands-free receive register connected to the microprocessor; a hands-free transmit register connected to the microprocessor; a ROM having a speakerphone operation algorithm, the ROM conn... | 12/20/2005 |
| 6978010 | Ambient noise cancellation for voice communication device A system and method for reducing or entirely canceling background or ambient noise from a voice transmission from a communications device. A communications device, such as a mobile telephone, is configured with an ambient noise compensation signal generator that is ... | 12/20/2005 |
| 6961591 | Hand held telephone set and audio processing method A handheld telephone set used by connecting a dual-ear mount type or single-ear mount type earphone that automatically sets an optimal signal level of an ambient sound according to the earphone type used, provided with: a telephone set main body unit, a detection de... | 11/01/2005 |
| 6959082 | Method and system for automatic gain control with adaptive table lookup A method and system for automatic gain control is provided. The automatic gain control may be used, for example, with a microphone and voice codec of a speakerphone telephone. In an exemplary embodiment, an amplification gain lookup table stores the gain values. The... | 10/25/2005 |
| 6882684 | Automatic gain control circuit, data communication device and automatic gain control method An automatic gain control circuit includes a first portion which calculates a first error amount, and a second portion which calculates a second error amount. Both calculated error amount is sent to a determination module. Further, an integrator integrates an error ... | 04/19/2005 |
| 6829352 | Amplifier arrangement Amplifier arrangement comprising: a resistive receive hybrid means adapted to pass a combination of a received signal and a transmitted signal, a resistive transmit hybrid means adapted to pass substantially only t... | 12/07/2004 |
| 6771771 | Method and device for echo cancellation An echo canceling device includes a first variable amplifier for variably amplifying an audio signal input through a microphone according to a control signal; a first analog-to-digital converter for converting an analog signal output from the first variable amplifie... | 08/03/2004 |
| 6754337 | Telephone having four VAD circuits Voice activity is detected by comparing a signal with two thresholds and producing data representing the energy of the signal. The data, in binary form, is compared with thresholds to determine voice activity. In accordance with another aspect of the invention, the ... | 06/22/2004 |
| 6744882 | Method and apparatus for automatically adjusting speaker and microphone gains within a mobile telephone The mobile telephone is provided with the capability for automatically adjusting the gain of a microphone of the telephone based upon the detected noise level in which the cellular telephone is operated. As the noise level increases, the gain of the microphone is au... | 06/01/2004 |
| 6711258 | Apparatus and method for controlling a volume in a digital telephone The present invention relates to an apparatus and a method for volume control in digital telephones such as second generation mobile telephone terminals, third generation IMT 2000 image mobile telephone terminals, and ISDN (integrated service digital network) termin... | 03/23/2004 |
| 6671371 | Adaptive transmit amplifier An adaptive transmit amplifier for automatically adjusting the transmit output characteristics of a headset adapter output stage includes a detector adapted to detect a value of a bias current in a host microphone transmit circuit. The adaptive transmit a... | 12/30/2003 |
| 6625277 | Low current signal compression circuit A low voltage and low current compression circuit for connection between a telephone receiver and a telephone headset earphone, the circuit having an operational amplifier with variable gain, the gain being determined by the output signal level and by the... | 09/23/2003 |
| 6549629 | DVE system with normalized selection In a DVE, digital voice enhancement, communication system, the selection decision for choosing which microphone to be active is based on a given function of the speech of a respective talker relative to his/her acoustic environment at the respective micro... | 04/15/2003 |
| 6370245 | Full duplex communication circuits with bilateral T hybrid and balanced impedance configurations Full duplex circuits provide a bi-directional signal path at one port for transmit and receive signals and also provide separation between the transmit and receive signals at their respective ports. To accomplish this, the circuits employ amplifiers arran... | 04/09/2002 |
| 6351529 | Method and system for automatic gain control with adaptive table lookup A method and system for automatic gain control is provided. The automatic gain control may be used, for example, with a microphone and voice codec of a speakerphone telephone. In an exemplary embodiment, an amplification gain lookup table stores the gain ... | 02/26/2002 |
| 6233462 | Portable terminal device for automatically controlling transmitting voice level and calling sound level 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 ... | 05/15/2001 |
| 6195572 | Wireless communications assembly with variable audio characteristics based on ambient acoustic environment 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 communicatio... | 02/27/2001 |
| 6185298 | Telephone having a speech ban limiting function In a telephone, a speech band switching circuit selectively provides a received speech with one of a plurality of frequency characteristics. A sensing circuit senses the level of noise around the telephone. A speech band control circuit compares the noise... | 02/06/2001 |
