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:
Jan. 14, 2003
Filed:
Mar. 28, 2001
Kishan Shenoi, Saratoga, CA (US);
Sandro Squadrito, San Jose, CA (US);
Gary Bogardus, San Carlos, CA (US);
Symmetrican, Inc., San Jose, CA (US);
Abstract
Systems and methods are described for asymmetric digital subscriber loops. A method includes utilizing a circuit having a first end and a second end, the circuit having a first amplification interface connecting the first end to the second end in a first direction, and a second amplification interface connecting the second end to the first end in a second direction; adapting the first amplification interface to provide a first gain adjustment as a function of a first attenuation of a first communication by a first direction impedance from the transmission medium while transmitting in the first direction, the first communication within a first frequency range over the transmission medium from the first end to the second end; and adapting the second amplification interface to provide a second gain adjustment as a function of a second attenuation of a second communication by a second direction impedance from the transmission medium while transmitting in the second direction, the second communication within a second frequency range over the transmission medium from the second end to said first end. An apparatus includes a modulator for transmitting a first communication, in a first direction over a transmission medium, the modulator operably coupled to a first amplification interface for providing a first gain adjustment, based on a first attenuation of the first communication in the first direction by a first direction impedance of the transmission medium; and a demodulator operably coupled to the modulator, for receiving a second communication, in a second direction over the transmission medium, the demodulator operably coupled to a second amplification interface for providing a second gain adjustment, based on a second attenuation of the second communication in the second direction by a second direction impedance of the transmission medium.