The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 18, 2002
Filed:
Mar. 31, 1998
Rabah S. Hamdi, Houston, TX (US);
Edward E. Olkkola, Tomball, TX (US);
David Christopher Dorsey, Spring, TX (US);
Compaq Computer Corporation, Houston, TX (US);
Abstract
A peripheral coder/decoder (codec) that has low power consumption such that the peripheral codec facilitates bus-powered peripheral devices that utilize a codec. One such peripheral device is a modem. In the case of host-based modem, a host computer provides processing capabilities while a bus-powered peripheral device contains circuitry for analog-to-digital and digital-to-analog conversions as well as circuitry for interfacing to a transmission media. The bus-powered peripheral device is coupled to the host computer by a peripheral bus. In one embodiment, the peripheral bus is a Universal Serial Bus (USB) bus and the bus-powered peripheral device is a USB device. By being bus-powered, the bus-powered peripheral device does not require its own separate power source. A method for transmitting data over the peripheral bus using the host-based modem and the bus-powered peripheral device are also disclosed.