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:
May. 18, 1976
Filed:
Jan. 13, 1975
Josef Huellwegen, Altenbeken, DT;
Nixdorf Computer AG, Paderborn, DT;
Abstract
An improvement in a circuit arrangement for controlling of amplification devices in a semi-duplex data signal transmission system. The circuit arrangement is comprised of an integral control which is controlled by a normal magnitude signal derived from the output of a respective amplification device in the data signal transmitting path. The integral control delivers a control signal for adjusting a correcting element and an amplification factor within the circuit arrangement. The specific improvement is the provision of a controllable switch which is controllable based upon the magnitude of the arriving data signals. The switch is connected in a loop located between the output terminal and the input to the correcting element. The control loop controls the signal level of signals being transmitted along the data signal transmitting path so that signal transmission can occur immediately following the receipt of data and immediately upon a change of the data signal transmission system from a transmitting condition to a receiving condition.