Texas Instruments Corporation

Pedro Ramon Gelabert

Trudy D Stetzler

Gene A Frantz

Aziz Umit Batur

Vikram Vijayanbabu Appia

Carl Michael Panasik

Tod David Wolf

Abhijit Anant Patki

Anand Kannan

Anand Subramanian

Jason Douglas Kridner

Thomas M Siep

Ramamurthy Vishweshwara

Uttam Kumar Agarwal

Mark Nadeski

Diljith Mathal Thodi

A circuit includes a programmable gain amplifier (PGA) having a PGA output. The circuit further includes a delta-sigma modulator having an input coupled to the PGA output. The circuit also includes a digital filter and a dynamic range enhancer (DRE) circuit. The digital filter is coupled to the delta-sigma modulator output. The DRE circuit is coupled to the delta-sigma modulator output and to the PGA. The DRE circuit is configured to monitor a signal level of the delta-sigma modulator output. Responsive to the signal level being less than a DRE threshold, the DRE circuit is configured to program the PGA for a gain level greater than unity gain and to cause the digital filter to implement an attenuation of a same magnitude as the gain level to be programmed into the PGA.

Analog-to-digital converter with dynamic range enhancer

A method of automatically focusing a projector in a projection system is provided that includes projecting, by the projector, a binary pattern on a projection surface, capturing an image of the projected binary pattern by a camera synchronized with the projector, computing a depth map from the captured image, and adjusting focus of the projector based on the computed depth map.

Projector auto-focus correction with the aid of a camera

A media player coupled to a network contains a processor, non-volatile memory, volatile memory, a driver, and input and output ports. The media player receives a media file over the network that contains an encoded media stream and a universal decoder. The player's processor converts or translates (or otherwise generates) the universal decoder into a player-specific decoder which may differ from the universal decoder. A library of routines stored in the non-volatile memory is used to create the player-specific decoder. The media stream downloaded to the media player may comprise audio, video, or any other desired type of media. In this manner, each media player can generate a decoder that differs, not only from the universal decoder, but may also differ from other media players thereby alleviating the burden on the media source from having to download the encoded media with a decoder specific to the target media player.

Universal decoder for use in a network media player

A hearing assist device ( ) for a person (P). The device comprises a speaker device (SP ) for presenting sound to an ear canal of the person and circuitry for identifying a specified area relative to the person. The device further comprises a first microphone (M ) for providing a first sound signal in response to a first sound source located inside the area and in response to a second sound source located outside the area. Further, the device comprises a second microphone (M ) for providing a second sound signal in response to the first sound source and the second sound source. Still further, the device comprises circuitry ( ) for determining a position of the first sound source and the second sound source in response to the specified area, the first sound signal and the second signal. Finally, the device comprises circuitry ( ) for outputting a processed signal in response to the position. In operation, the speaker device is operable to present processed sound to the ear canal in response to the processed signal, wherein the processed sound represents a different suppression of sound from the second sound source relative to sound from the first sound source.

Hearing assist device with directional detection and sound modification

According to one embodiment of the present invention, a digital hearing device is disclosed. The digital hearing aid includes a microphone for receiving sound, which may include an analog signal. The analog signal is converted by a first converter into a digital signal. Filters are provided to divide the digital signal into multiple signal parts. A signal processor may be provided for each signal part, and performs signal processing on its respective signal part. An adder adds the output of the signal processors, which results in a processed digital signal. A second converter converts the processed digital signal back into an analog signal. A speaker then outputs the analog signal. According to another embodiment of the present invention, a method for enhancing sound is provided. The method includes the steps of: (1) receiving sound containing an analog signal; (2) converting the analog signal to a digital signal; (3) dividing the digital signal into signal parts; (4) performing signal processing on the signal parts; (5) adding the processed signal parts, resulting in a processed digital signal; (6) converting the processed digital signal to a processed analog signal; and (7) outputting the processed analog signal. According to another embodiment of the present invention, a digital hearing system is provided. The digital hearing system includes at least one hearing device and a central processing unit. The hearing device includes a microphone for receiving sound that includes an analog signal, a transmitter for transmitting the analog signal, and a receiver for receiving a processed analog signal. The central processing unit includes a receiver for receiving the analog signal from the hearing device, a signal processor for processing the signal, and a transmitter for transmitting the processed signal to the hearing device.

Digital hearing device, method and system

Growing community of inventors

Allen, TX, United States of America

Pedro Ramon Gelabert