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US 6,633,510 B1Granted
Dual time zone time piece
OwnerAlfred E. Hallinventor
Life of this patent
Estimating the term…
Abstract
A dual time piece having at least two clock faces thereon with each clock face having indicia thereon that enable the user to determine whether the time displayed by each time piece represents time before noon or time after noon.
Claims4
An improved dual time zone time piece having first and second LCD clock faces formed of liquid crystal and representing two time zones, the improvement comprising:
- electronic means coupled to said liquid crystal forming each of said first and second LCD clock faces for automatically causing said liquid crystal forming each of said first and second LCD clock faces to have only one first color before 12:00 noon and after 12:00 midnight thus representing only a.m. hours;
- and
- said electronic means automatically causing said liquid crystal forming each of said first and second LCD clock faces to have only one second color after 12:00 noon and before 12:00 midnight thus representing only p.m. hours to thereby readily indicate a.m. or p.m. hours to a user of said dual time zone time piece.
A method for improving a dual time zone timepiece having first and second timepieces with first and second corresponding LCD clock faces formed of liquid crystal, each timepiece representing one of two time zones, the method comprising the steps of:
- automatically causing the liquid crystal of the LCD clock face of each of first and second timepieces to have only one first color when either of said first and second time pieces represents a.m. hours;
- and
- automatically causing the liquid crystal of the LCD clock face of each of first and second timepieces to have only one second color when either of said first and second time pieces represents p.m. hours thus enabling a.m. hours and p.m. hours to be readily distinguished from each other.
Dependencies are inferred from the claim text.