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:
Nov. 21, 1995
Filed:
Jul. 08, 1993
Kazuo Okada, Tokyo, JP;
Kabushiki Kaisha Universal, Tochigi, JP;
Abstract
A slot machine has a coin sensor, which is connected to a CPU via a signal line, and generates a coin-detecting signal upon insertion of a coin. The slot machine stands by for execution of a game in response to the coin insertion, under the control of the CPU. A reel-stop switch is connected to the CPU via a signal line, and generates a reel-stop signal in response to a button depression. A test signal generator outputs a test signal to the signal line of the reel-stop switch. The CPU checks the signal line of the coin sensor. If the test signal is detected through the signal line of the coin sensor, execution of the game is inhibited, whereby a fraudulent operation is detected.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile