Patent ID: 6556965
Filing Date: 2003-04-29
Classification: G10L,H04B,H04M

Abstract:
A telephone for high-quality audio signals, the telephone comprising:a sampler circuit configured to receive an analog audio signal and to digitize the analog audio signal, thereby generating a digital audio signal at a first data rate, and wherein the sampler circuit samples the analog audio signal at a rate of at least 44 kHz; a compression circuit coupled to said sampler circuit wherein said compression circuit generates a compressed digital signal at a second data rate less than or equal to the first data rate in response to the digital audio signal; a telephone port coupled to said compression circuit and configured to provide the compressed digital signal to a telephone line; a decompression circuit coupled to said telephone port; wherein said decompression circuit is configured to receive a received compressed digital signal through said telephone port from the telephone line, and wherein said decompression circuit is configured to generate a reconstructed digital audio signal at the first data rate in response to the received compressed digital signal; and a digital-to-analog (D/A) converter coupled to said decompression circuit and configured to generate a reconstructed analog audio signal in response to the reconstructed digital audio signal; wherein said sampler circuit, said compression circuit, said decompression circuit, and said D/A converter are comprised in a handset unit and wherein said telephone port is comprised in a base unit and wherein the handset unit and the base unit are coupled by a wireless link, wherein the wireless link is an infared (IR) link.