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, 1992
Filed:
Mar. 26, 1992
Tomoo Kasuo, Hamura, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Abstract
A stopwatch according to the present invention can measure a lap time by the operation of a lap switch of a key input portion and stores the measured lap time in a RAM. When the lap switch is operated, a minute hand is immediately moved to a position of 0 o'clock, and is started its rotation from the position of 0 o'clock. The hand is rotated at such speed that the hand arrives at a position of 10 o'clock after the preceding lap time stored in the RAM is elapsed. In order to rotate the hand at the above described speed, a microprocessor unit calculates the time interval to supply pulse signal to a step motor. Since the hand is moved from the position of 0 o'clock to the position of 10 o'clock at the above described speed, percentage of the lap time being measured at present with respect to the preceding lap time can be immediately known.