Sigmatel, Inc.

Thomas A Zudock

Russell Alvin Schultz

Marc Kevin Jordan

Jean Charles Pina

Jeffrey Patrick Gleason

Libor Nouzovsky

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

An internal memory uses a resource identifier and an entry point to identify which functional program from an external memory is to be loaded into one of a plurality of overlay spaces established in the internal memory. In executing a program statement, the resource identifier identifies a corresponding functional program to perform a particular functional operation and the identified functional program is then loaded into an overlay space specified by the entry point. The functional program is then executed in the overlay space.

Use of multiple overlays to import programs from external memory

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.

Use of a resource identifier to import a program from external memory for an overlay

A method and apparatus that includes processing for recovering data that was transported utilizing multiple data transport protocols, where such processing begins by receiving formatted data and decoding the formatted data in accordance with a second data transport protocol. The decoding recaptures a first formatted data and a first data transport identifier. The processing then continues by decoding the first formatted data in accordance with a first data transport protocol based on the first data transport identifier. For example, if the first data transport protocol is one of the IrDA data transport protocols and the second data transport protocol is the USB data transport protocol, the decoding of the formatted data is to recapture the data that is formatted in accordance with the IrDA protocol, where the first transport identifier includes information that identifies the start of IrDA formatted data and its length. It turn, by decoding the IrDA formatted data, the original data is recaptured.

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Austin, TX, United States of America

Thomas A Zudock