Simpletech, Inc.

S-tec Corporation

Western Digital Technologies, Inc.

Brian Robinson

Mark Moshayedi

Richard S Lucky

Andrew David Prosory

Circuits for measuring a leakage current of one or more capacitors coupled to a power supply line that powers an apparatus, such as a storage device, are disclosed. In one embodiment, the circuit includes first and second resistors between the power supply line, and first and second respective switches to ground. A controller may charge the voltage line to a first voltage. Thereafter, the controller discharges the first voltage to a second voltage via the first resistor during a first identified time. After recharging the voltage line, the controller then discharge the first voltage to the second voltage via at least the second resistor during a second identified time. The controller determines the parasitic resistance using the first and second identified times, and then the leakage current from the parasitic resistance. Removing the leakage current factor from subsequent measurements can greatly improve testing accuracy and can avoid false positives in the testing process that would otherwise require removal of drives or other systems that are working properly.

Hold-up capacitance health measurement with current leakage detection

A data preservation system for flash memory systems with a host system, the flash memory system receiving a host system power supply and energizing an auxiliary energy store therewith and communicating with the host system via an interface bus, wherein, upon loss of the host system power supply, the flash memory system actively isolates the connection to the host system power supply and isolates the interface bus and employs the supplemental energy store to continue write operations to flash memory.

Protection against data corruption due to power failure in solid-state memory device

Solid-state memory device with protection against power failure

System and method for preventing data corruption in solid-state memory devices after a power failure

A multi-function interface module having at least one interface and a controller for manipulating input and output data.

Multi-function interface module

A module incorporating a flash memory and a flash memory controller. The flash memory controller receives data via a first interface which can be a PCMCIA type interface. The data is then stored in the flash memory. The controller is adapted to be able to selectively recall the data from the flash memory and transmit the data to one or more recipient devices via the PCMCIA type interface or by an alternate interface. The module incorporates a user input device that, when manipulated by the user, induces the controller to send the data via the alternate interface. In one embodiment, the alternate interface is comprised of a GSM interface which allows data stored in the flash memory to be transmitted via a cellular telephone to a pre-selected telephone number by the user manipulating the user input device.

Multi-function module incorporating flash memory and enhanced I/O interface that can translate data from one format into another format for subsequent transmission to an external device

Growing community of inventors

San Pedro, CA, United States of America

Brian Robinson