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. 13, 1998
Filed:
Mar. 27, 1996
Nozomu Takahashi, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
An LED display device and a method for controlling the same have been proposed which comprises at least an LED matrix circuit in which LEDs are arranged in a matrix fashion, an analogue switch for respectively selecting analogue display data for respective rows in said LED matrix circuit, a sample hold circuit for sample-holding the display data selected by the analogue switch, a driver for driving and controlling the LEDs in corresponding rows of the LED matrix circuit based on the display data being sample-held, and a counter and a decoder for generating a switching signal of the analogue switch. According to this configuration, a gradation display of the LEDs is executed by virtue of the display data as analogue signals.