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:
Jul. 25, 1978
Filed:
Jan. 03, 1977
Applicant:
Inventor:
Robert A Orban, Menlo Park, CA (US);
Assignee:
Orban Associates, Inc., San Francisco, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B / ; H03K / ; H03G / ;
U.S. Cl.
CPC ...
328169 ; 307237 ; 328175 ; 330126 ; 330151 ;
Abstract
In a bandlimited recording or transmission system utilizing broadband limiting and high-frequency pre-emphasis followed by clipping, a unique combination of a lowpass filter and shelving filter are used to limit channel overload exhibited by prior art clipping and anti-aliasing filters. The pre-emphasis employs a split path signal flow, with a voltage controlled amplifier used on the high-frequency signal path.