G - Physics – 05 – B
Patent
G - Physics
05
B
342/13.4
G05B 11/01 (2006.01)
Patent
CA 1095152
PA-4910-1-AW- PROGRAM MODIFICATION CIRCUIT FOR ELECTRONIC APPLIANCE PROGRAMMER ABSTRACT OF THE DISCLOSURE An appliance programmer, in particular an automatic washer programmer, employs a memory circuit and a sequence control for establishing a predetermined program. Included in the program are a program modifi- cation circuit and a rapid advance circuit whose functions are respectively to automatically modify the program inherent in the programmer and to rapidly step the pro- grammer through its operational program. The memory and sequence control of the programmer are designed so that, absent the program modification circuit, the programmer can effect only a single predetermined program. For this reason the program modification circuit has been designed to enable the programmer to effect other programs. The program modification circuit receives inputs from selected function display lights to indicate that a certain function is being performed and from the sensors to indicate that a function has been completed or a condition has been satisfied in the machine. The program modification circuit then causes several of the frequency dividers in the frequency divider chain of the clock to be bypassed. This results in the shortening of the next predetermined time period which the clock is programmed to establish. There- fore, the operation which is then being performed is shortened in duration so that the function appears to be curtailed thus causing a modification of the predetermined program. In addition, a rapid advance circuit is provided which allows for manually speeding up the functions of the -1- programmer by stepping the programmer through its sequence of operations at a much faster rate than normal. This also allows the programmer to be tested rapidly for ease in servicing.
276179
Karklys Joseph
Yamanaka Junji C.
Corporation Whirlpool
Kirby Eades Gale Baker
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