Electronic chess clock

Details Electronic chess clock Electronic chess clock

1975-07-31

1977-12-13

Weldon, Ulysses

58152R, 58 23R, 58 50R, G04B 520

Patent

active

040621804

ABSTRACT:
A chess clock is provided which is electronic in operation and digital in display having three modes of operation. In the first mode, the tournament mode, the display has two digital clock displays in minutes and seconds which indicate the time remaining in any given period for each player, together with the total number of required moves remaining. The total time allotted in each period, and the number of moves are programmable into the clock. The subsequent periods to the primary first period are also programmable into the clock with time remaining in preceding periods automatically added on to subsequent periods. The fast game mode is similar to the tournament game with the exception that both times are digitally displayed and not the number of moves since this is not a parameter of the game. A seconds game mode is also provided with one time remaining only display with a countdown for the number of seconds allowed per each move, typically 10 seconds. This displays only the active player's time remaining since there is also a very short time add-on grace period feature in this mode. Suitable buzz tones indicate time periods elapsed and in the seconds game a preliminary elapsed time together with a grace period lapse is indicated.

REFERENCES:
patent: 2539754 (1951-01-01), Rettinger et al.
patent: 3128373 (1974-04-01), Phlieger
patent: 3610753 (1971-10-01), Neubauer
patent: 3686880 (1972-08-01), Samejima
patent: 3698180 (1972-10-01), Klein
patent: 3789195 (1974-01-01), Meier et al.
patent: 3877216 (1975-04-01), Mounce et al.
patent: 3878675 (1975-04-01), Prociuk
patent: 3961473 (1976-06-01), Hung

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