Abstract:
PROBLEM TO BE SOLVED: To automatically adjust the microphone gain of a communication device based on a noise level. SOLUTION: A cellular phone 100 includes a control unit 108, a digital signal processor (DSP) 110, a transmitting/receiving unit 112 and a microphone gain control unit 113. The cellular phone 100 is provided with capability of automatically adjusting the gain of a microphone 102 based on a detected noise level. As the noise level increases, the gain of the microphone 102 automatically decreases, thereby a natural tendency that the user of the telephone 100 speaks in a loud voice in noisy environment is compensated. Further, the cellular phone 100 includes a speaker 104 and the gain of the speaker 104 is adjusted so as to be increased in response to the increase of background noise level. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a means for adjusting the gain of a microphone of a telephone based on a detected noise level. SOLUTION: Based on the detected noise level in which a cellular telephone 100 is operated, the capability for automatically adjusting the gain of a microphone 102 is included. As the noise level increases, the gain of the microphone 102 automatically decreases, thereby compensating for the natural tendency of users of a telephone 100 to speak more loudly in noisy environments. A digital signal processor 110, which is configured or programmed to apply the detected noise level to look-up tables 116 and 118 relating gain levels of a speaker 104 and microphone 102 appropriate to various noise levels, is included. The gain of the speaker 104 is adjusted to increase in response to an increase in a background noise level. Therefore, for example, no manual volume control button is needed on the cellular telephone 100. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To automatically adjust a speaker gain in accordance with a noise level by removing voice distortion of a mobile telephone. SOLUTION: When a distortion level of a frequency of a signal exceeds a predetermined value, in a speaker 414 of a mobile telephone, the frequency is filtered by an output filter 402, the signal is further compressed by a compressor 406, and the signal is then supplied via a volume setting logic 410. Furthermore, a gain of the speaker 414 is adjusted to increase the gain in response to increase of a background noise level by a means 408 for setting the background noise level in the environment, in which the mobile telephone is operating, and setting the gain of the speaker based upon the detected background noise level. Thus, voice quality is improved, a volume control button of a telephone is not required, and configuration can be simplified. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
Un dispositivo de visualización, que comprende: una pantalla de visualización (4) capaz de proporcionar una imagen; y un sensor de matriz de área ultrasónica (7) unido a un componente de lado posterior de la pantalla de visualización, caracterizado por que el sensor de matriz de área ultrasónica está unido de modo que un área de detección del sensor de matriz de área está en ángulo con respecto a una superficie formadora de imágenes de la pantalla de visualización.
Abstract:
In one embodiment, a mobile station such as a dual-mode, AMPS and CDMA, handset communicates with an AMPS base station in a wireless communication system. The mobile station includes an acoustic echo canceller, which can detect acoustic echo, for example, feedback from the handset speaker to the handset microphone, during communication between the mobile station and the base station, and cancel or eliminate the acoustic echo. The mobile station also includes a network echo suppressor coupled to the acoustic echo canceller. For example, the network echo suppressor can read a parameter set by the acoustic echo canceller. The network echo suppressor attenuates or mutes a network echo caused by portions of the communication returning to the mobile station from the base station after a network propagation delay. Coupling the network echo suppressor to the acoustic echo canceller ensures proper interaction between the network echo suppressor and acoustic echo canceller.
Abstract:
Un dispositivo para procesar una señal de entrada proveniente de un micrófono (202) de un dispositivo de comunicaciones, comprendiendo: un medio (204) para aplicar una ganancia analógica a la señal de entrada para formar una señal ajustada de ganancia analógica; y un medio (216) para convertir la señal ajustada de ganancia analógica en una señal digital; caracterizado por: un medio (210) para aplicar una ganancia digital a la señal digital para formar una señal ajustada de ganancia digital; y un medio limitador (214) para procesar la señal ajustada de ganancia digital para generar una señal de salida que tenga un valor que sea menor o igual a un valor umbral limitador, el medio limitador (214) estando configurado para realizar la detección de pico sobre la señal ajustada de ganancia digital.
Abstract:
REIVINDICACIONES 1. Un dispositivo de modo doble (150) que comprende: un módulo de comunicación (110) configurado para comunicarse con una estación base (102) en un sistema de comunicación inalámbrico (100); un cancelador de eco acústico (124) configurado para detectar y cancelar un eco acústico generado durante una comunicación entre dicho dispositivo y dicha estación base (102); y un supresor de eco de red (116) configurado para recibir como entrada parámetros del cancelador de eco acústico que incluyen al menos un parámetro de silencio (133) desde dicho cancelador de eco acústico (124) para afectar al funcionamiento del supresor de eco de red (116) y en el que dicho supresor de eco de red está configurado para recibir una señal de recepción (112) desde dicho módulo de comunicación (110) y pasar una señal de recepción ajustada (120) a dicho cancelador de eco acústico (124).
Abstract:
In one embodiment, a mobile station such as a dual-mode, AMPS and CDMA, handset communicates with an AMPS base station in a wireless communication system. The mobile station includes an acoustic echo canceller, which can detect acoustic echo, for example, feedback from the handset speaker to the handset microphone, during communication between the mobile station and the base station, and cancel or eliminate the acoustic echo. The mobile station also includes a network echo suppressor coupled to the acoustic echo canceller. For example, the network echo suppressor can read a parameter set by the acoustic echo canceller. The network echo suppressor attenuates or mutes a network echo caused by portions of the communication returning to the mobile station from the base station after a network propagation delay. Coupling the network echo suppressor to the acoustic echo canceller ensures proper interaction between the network echo suppressor and acoustic echo canceller.
Abstract:
The present invention is a novel and improved method and apparatus for performing multiple applications on a microprocessor or DSP. One embodiment of the invention includes a car kit for interfacing with a cellular telephone. The care kit includes a digital signal processor for performing digital signal processing and a cradle unit for holding the cellular telephone and for providing a link to said digital signal processor. Additionally, an on-chip memory is provided, located on an integrated circuit with the digital signal processor, for storing a limited function program that control said DSP. Off-chip memory stores multiple limited function programs and for loading any one of the limited function programs to the on-chip memory.