Blackberry Corporation

Research in Motion Corporation

Puvikumar Sinnathamby

Maxime M Matton

Suhaib Alam Chishtie

Suhaib A Chishtie

A system and method for flash memory management is provided. In particular, the system and methods herein provide for management of flash memory, particularly NAND flash memory, in a manner that potentially reduces the number of write/erase cycles typically experienced by a data storage device. When unsecure data records are to be written to the flash memory, the new or updated unsecure data records are stored in the first available location in the flash memory (e.g. a block) providing a best fit for the data records. Where the data records are updates, the updated version is stored with an incremented version number to indicate that the updated version is the current version. Older versions of the data records are deleted during garbage collection. When secure data records are to be written to the flash memory, new or updated secure data records are stored in the location in the flash memory with the most available space. Any older versions of secure data records are immediately deleted.

System and method for managing flash memory

A battery monitoring apparatus that senses battery conditions such as low battery charge, end of battery capacity, and end of battery life, and responds by taking actions such as sending messages to a remote site and/or powering down. A rechargeable battery is coupled to one or more power-consuming electrical components, including battery monitoring equipment. The battery monitoring equipment senses battery charge. In response to a low-battery-charge condition, the battery monitoring equipment transmits a battery status message to a remote site and powers-down some of the electrical components. Whenever the battery nears the end of its capacity, the monitoring equipment powers down all electronic components and awaits the application of external power. The invention also tracks the time required for the battery charge to deplete. Charge duration decreases over time, and whenever it reaches a predetermined minimum, the battery monitoring equipment transmits a representative status message to the remote site.

System and method for portable power source management

A host system is provided comprising including a power source configured to provide power to a first auxiliary device; and a host power manager configured to monitor an available power level of the power source; and direct the power source to reduce power provided to the first auxiliary device based upon the available power level, wherein the reduced power is greater than zero.

A system is provided that includes a host system configured with a portable power source and a host power manager. The host power manager is configured to monitor an available power level of the portable power source and at least one power usage by one or more auxiliary devices. The host power manager is further configured to promote less than a full power usage by at least one of the auxiliary devices.

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Toronto, Canada

Puvikumar Sinnathamby