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:
Sep. 29, 1981
Filed:
May. 12, 1978
Yasufumi Yumde, Yokohama, JP;
Takashi Furuhata, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In receiving a narrow band video signal transmitted through a narrow band transmission line such as a telephone line, a sound tape recorder or the like, the narrow band video signal is first stored in memories and is then read out therefrom at a higher reading-out speed than the writing-in speed so that the band allocated to the read-out signal is broadened to facilitate the display of the video signal. When reading out the video signal from the memories, the timing of reading out even lines constituting a display image of the video signal is shifted from the timing of reading out odd lines constituting the same display image by a time substantially equal to half the reciprocal of the frequency in terms of the bandwidth of the read-out video signal, the reciprocal corresponding to the resolution limit for the received video signal.