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:
Oct. 19, 1976
Filed:
Jan. 15, 1975
Russell Peter Smith, Christchurch, NZ;
Other;
Abstract
A gain control and method therefor which allows the use of a single gang variable attenuator for the synchronous control of the gains of each channel of a multi-channel system of the type employing a separate transmission path for each channel. This is accomplished by inserting multipliers at the output of each transmission path and multiplying the path signals with a carrier signal the level of which is varied with a single gang attenuator. The level of the multiplier output signals vary in accordance with the level of the carrier signal. Where intelligence signals are to be inserted at the input of each transmission path these are multiplied with the carrier signal prior to insertion resulting in the recovery of the intelligence signal at the output of the multipliers located at the output of each path. An increased range of gain control can be achieved by inserting the attenuated carrier signal at the inputs of each transmission path.