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. 17, 1990
Filed:
Jan. 23, 1989
Toshio Kanai, Takatsuki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A picture display apparatus for displaying a picture by using a composite signal including tri-state binary synchronizing signals. A first horizontal synchonizing signal comprising a positive-polarity bilevel (the two-state) signal is generated by detecting a negative-polarity peak portion of an input composite picture signal to accomplish the horizontal synchronization of a picture by use of the first horizontal synchronizing signal whereby when the horizontal synchronization is stabilized, an output pulse produced from the first horizontal synchronizing signal is utilized to extract the tri-state binary horizontal synchronizing signal from the composite picture signal during the time of the output pulse thereby accomplishing horizontal synchronization of the picture by the tri-state binary horizontal synchronizing signal in the stable condition.