Sigmatel, Inc.

Marc Kevin Jordan

Russell Alvin Schultz

Jean Charles Pina

Thomas A Zudock

Antonio Torrini

Matthew Brady Henson

David Moore

Jeffrey Patrick Gleason

A method for booting a system on a chip (IC) integrated circuit includes reading a warm boot flag stored in a persistent register of an analog portion of the system on a chip IC. A warm boot procedure is executed when the warm boot flag is set.

Method for booting a system on a chip integrated circuit

A method for 'booting up' a multiple function device that involves first detecting the activation of the multiple function device. A 1boot algorithm, retrieved from read-only memory, is executed to identify the location of a 2boot algorithm. The 2boot algorithm, retrieved from a specified location based on the booting inputs, is verified for executability. When the 2boot algorithm is executable, it is executed to retrieve the functional algorithms that configure the multiple function device in the desired configuration. When the 2boot algorithm is not executable, and the multiple function device is operably coupled to a host, the correct functional algorithm or a default functional algorithm is downloaded and executed to configure the multiple function device. When an executable functional algorithm cannot be retrieved from memory or the host, the multiple function device powers down after a predetermined amount of time.

System and method to initialize a multiple function device with a multi-part boot algorithm

A memory device has a plurality of memory blocks utilized to store data. One of the blocks is used as a hidden memory block to store an operating system program, instead of data. The hidden memory block is designated as a bad block so that data will not be written into the hidden memory block, but a tag associated with the hidden memory block identifies that the hidden memory block contains the operating system program.

Use of NAND flash for hidden memory blocks to store an operating system program

A method for 'booting up' a multiple function device that first involves determining a configuration state of the multiple function device. Based on the configuration state, a functional mode is selected from a number of functional modes. A functional algorithm associated with the selected functional modes is accessed from memory. The functional algorithm is then examined to determine if the algorithm is executable. When the functional algorithm is not executable and the multiple function device is operable coupled to a host, a functional algorithm is downloaded from the host. Otherwise, the device may time-out and is powered down.

Method for initializing multifunction handheld device by downloading second boot algorithm from a coupled host if second boot algorithm in the handheld device is not executable

An internal memory uses a resource identifier to identify which functional program from an external memory is to be loaded into an overlay space of the internal memory. In executing a program statement of a main program to perform a particular functional operation without identifying a corresponding functional program, a prelude stored in a prelude space of the internal memory provides a resource identifier for the functional operation. The resource identifier identifies a corresponding functional program to perform the particular functional operation and the identified functional program is then loaded into the overlay space to be executed.

Growing community of inventors

Austin, TX, United States of America

Marc Kevin Jordan