Robert N. Hasbun

Simultaneous code execution and data storage in a single flash memory chip for real time wireless communication systems

A cost-effective, flexible approach to emulating electrically erasable programmable read only memory (EEPROM) in flash memory is presented. New low latency suspend/resume circuitry combined with flash media management software is introduced to enable simultaneous code and data storage; thus eliminating system EEPROM memory, reducing system data write time, and lowering memory system cost and power consumption. This new method eliminates the need for specialized hardware circuits in flash memory that are required to simultaneously read code, while writing or erasing data from an independent address partition. Flash data integrator (FDI) media management software architecture is presented for data storage in a GSM cellular phone application, and is shown to offer a more flexible solution than a specialized hardware approach.

Secure manageable mobile handset platform architectures

The need for openness in mobile handset platform architectures from an applications development perspective, with a conflicting need for closedness in such platform architectures for security, manageability, and multiprotocol communications processing, has created a need for an overall platform architecture that provides simultaneous support for such features. Platform architectures are suggested that are rooted in hardware along with a trusted platform-aware architecture manager that creates closed partitions to provide cryptographic, communications, and manageability services, as well as open partitions for applications processing. Important and desirable ingredients in such platform architectures include domain separation, hardware rooted mechanisms to establish platform trust, hierarchical key management, secure storage, efficient resource management, and an inherently manageable platform