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. 11, 1995
Filed:
Jul. 05, 1994
Dae-Sun Kang, Suwon, KR;
Ik-Jae Yoon, Kwacheon, KR;
SamSung Electronics Co., Ltd., Suwon, KR;
Abstract
In performing data communication between a subscriber terminal and a scanner of a remote information processing system, there is provided a data modulator-demodulator apparatus of a pseudo noise spread spectrum communication system for executing the data transmission and reception at a high speed, regardless of a voice speech use on a transmitting line. The transmitter part of the modulator-demodulator apparatus has a modulator which uses a pseudo noise code, generated by a pseudo noise code generator, to band spread real data, and the band spread data is converted to analog information by a transmitting converter for transmission over a transmitting line. The receiver part of the modulator-demodulator apparatus has a receiving converter which recovers operation clock data from the received analog signal, and converts a received analog signal to digital data. A demodulator in the receiver part then de-spreads the digital data in response to the pseudo noise code generated by the pseudo noise code generator.