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. 11, 1977
Filed:
Jun. 24, 1975
Tadashi Abe, Hirakata, JA;
Yukinobu Ishigaki, Yamato, JA;
Matsushita Electric Industrial Co., Ltd., Kadoma, JA;
Victor Company of Japan, Limited, Yokohama, JA;
Abstract
An angle-modulated signal transmission system comprises first and second filters for filtering signal components from first and second modulation signals supplied thereto. The filters eliminate a certain frequency band which tends to cause interference distortion in transmitted and demodulated signals due to crosstalk produced between first and second angle-modulated signal transmission paths. A mixer mixes the output signals of the first and second filters, with a certain mixing ratio. First and second adders add the signal components of a certain frequency band of the first and second modulation signals, thus mixed and processed by the mixer and the signal components of a frequency band other than the certain band of the first and second modulation signals. First and second angle modulators modulate carriers responsive to the resulting output signals of the first and second adders and send the output angle-modulated signals thereof respectively to the transmission paths.