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A control device adapted to control cooking time and power of an electric cooking device. By depressing entry keys on a control panel a desired cooking time data and power level setting data are entered in first and second shift registers respectively. Next when a cooking start key is depressed the

A control device adapted to control cooking time and power of an electric cooking device. By depressing entry keys on a control panel a desired cooking time data and power level setting data are entered in first and second shift registers respectively. Next when a cooking start key is depressed the electric cooking device starts its operation at a power corresponding to the power level setting data and the down count operation of the time data in the first shift register is started. When the time data in the first shift register becomes zero due to the down count operation the cooking device stops its operation. The data in the first and second shift registers are displayed by digital indicators. The time data in the first shift register is detected whether or not it has an erroneous digit or digits and any detected erroneous digit or digits are blanked or flashed on the digital indicators.

대표청구항 ▼

A digital control device for controlling cooking time and power of an electric cooking device comprising: keyboard means having numeral keys, timer key, power level key and cook key; entry means coupled to said keyboard means to generate in response to the depression of one of said numeral keys an o

A digital control device for controlling cooking time and power of an electric cooking device comprising: keyboard means having numeral keys, timer key, power level key and cook key; entry means coupled to said keyboard means to generate in response to the depression of one of said numeral keys an output as a numerical data corresponding to the numerical value of the depressed key; first shift register means coupled to the output of said entry means having a plurality of digit stages and adapted to store in response to the depression of said timer key and numerical keys a time data on a cooking time of said cooking device which corresponds to the numerical values of the depressed numeral keys; second shift register means coupled to the output of said entry means to store in response to the depression of said power level key and numeral key a data on a power level of said cooking device which corresponds to the latter depressed numeral key; digital display means coupled to said first and second shift register means to display the data stored in said first and second shift register means; subtraction pulse generating means for generating a subtraction pulse for passage of each predetermined unit of time; subtraction means coupled to said first shift register means and said subtraction pulse generating means and adapted to subtract, for each generated subtraction pulse, a predetermined number from the time data in said first shift register means in response to the depression of said cook key; cooking device control means coupled to said first shift register means and adapted to operate said cooking device in response to the depression of said cook key after the storage in said first and second shift registers of data on the cooking time and power level and stop the operation of said cooking device when the data in said first shift register become a predetermined number through subtraction; variable power control means coupled to said second shift register means and adapted to set said cooking device to a power corresponding to the data stored in said shift register means; error entry detecting means for detecting whether the value of a time data entered by said entry means in said first shift register means is erroneous; and means responsive to said error entry detecting means for (1) causing said display means to selectively flash only an erroneous digit or digits in said time data when said time data in said first register means contains a digit or digits with erroneous values, and for (2) maintaining the constant display of any digit with a non-erroneous value.