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US 5,818,781 AGranted
Automatic voltage detection in multiple voltage applications
AssigneeLexar
InventorsPetro Estakhri, Mahmud Assar, Boyd Gayle Pett
Life of this patent
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AssigneeLexar
InventorsPetro Estakhri, Mahmud Assar, Boyd Gayle Pett
Estimating the term…
A computer card including a voltage detection circuit having Flash EEPROM devices and a controller device, the voltage detection circuit further including a variable voltage detector for determining the system voltage level provided by a power supply within the computer product and appropriately enabling a voltage regulator circuit for dividing the system voltage level to a level suited for operation by the Flash EEPROM devices and applying this operational voltage level to the Flash EEPROM devices. Upon determining the system voltage level provided by the power supply to be appropriately suited for operation of the Flash EEPROM devices, disabling the voltage regulator circuit and providing the system voltage level to the Flash EEPROM devices.
A removable controller card for use in a computer system having a computer and an interface for connecting the computer to the removable controller card and for communicating digital information including power supply input and data between the computer and the card, the card comprising:
In a computer system having a computer and an interface for connecting the computer to a removable controller card to communicate digital information including power supply input and data between the computer and the card, the PC card including a controller for processing the digital information and providing the same to Flash EEPROM storage devices for storing the data therein, a method of detecting the voltage level of the power supply input and selecting to provide the power supply input or a divided power supply input based upon the power supply input being divided in voltage to generate a memory supply input for use by the Flash EEPROM device comprising:
In a computer system having a computer, an interface for communicating data and power source information including a power supply input from the computer to a controller, at least one Flash memory device for storage the data therein, a method of detecting the voltage level of the power supply input by the controller and determining to provide the power supply input or a divided power supply input to the Flash memory device for performing functional operations on the data comprising:
Dependencies are inferred from the claim text.