Broadcom Corporation

Paul Yang Lu

Yue Chen

Yan Zhang

Weiping Pan

Certain embodiments of a method and apparatus for high throughput mass storage device interface in a microprocessor for handheld systems may comprise interleaving accesses to a plurality of mass storage devices communicatively coupled to a portable media processing device. Interleaved transfer may occur of data corresponding to the interleaved accesses to the plurality of mass storage devices communicatively coupled to the portable media processing device. At least a portion of the plurality of mass storage devices may be communicatively coupled internally to the portable media processing device. A remaining portion of the plurality of mass storage devices may be communicatively coupled externally to the portable media processing device.

Method and apparatus for high throughput mass storage device interface in a microprocessor for handheld systems

Systems and methods for ensuring data integrity in a data processing system are disclosed. The method may include monitoring when data for a specified device is available for error correction code generation. A new error correction code may be generated in hardware for the data, based on the indicated size of the data. Detected errors may be corrected in software, based on the generated new error correction code. A first indication of the specified device, a second indication of the data and a third indication of a size of the data may be received during the monitoring. The method may also include indicating when the generating of the new error correction code for a specified number of accesses for at least a portion of the data is complete, and enabling or disabling the error correction code generation. The enabling and/or the disabling may be accomplished via an enable signal.

Method and system for detecting and correcting errors while accessing memory devices in microprocessor systems

A method for managing operation of a device, the method including performing using one or more processors and/or circuits in a handheld device, the one or more processors and/or circuits including a control device and one or more other devices, functions including receiving from the control device, one or more power setting signals indicative of a desired power level setting. The handheld device may operate utilizing a NORMAL power level setting in a normal mode, or a standby power level setting in standby mode. The standby power level setting may include a LOW power level setting and a sleep mode setting. One or more corresponding power adjustment signals may be generated based on the received one or more power setting signals. Power supplied to the handheld device may be adjusted based on the generated one or more corresponding power adjustment signals.

Method and apparatus for reducing standby power consumption of a handheld communication system

Methods and systems for processing video data are provided herein. Aspects of the method may comprise receiving on a chip, a plurality of video frames and storing a portion of the received video frames in a memory on the chip. A first portion of the stored video frames may be decoded on the chip and a second portion of the stored video frames may be encoded on the chip during the decoding. A third portion of the stored video frames may be converted from an input video format to a YUV video format. A reference frame corresponding to the converted third portion may be identified from the stored video frames. After conversion, the converted third portion of the received video frames may be utilized as the reference frame for estimating/encoding, or compensating/decoding temporal motion of the subsequently received video frames.

Method and system for image processing in a microprocessor for portable video communication devices

A method for managing operation of a device is disclosed and may include performing the following using one or more processors and/or circuits in a handheld multistandard communication system, the one or more processors and/or circuits comprising a control device and one or more other devices: receiving from the control device, one or more power setting signals indicative of a desired power level setting. The handheld multistandard communication system may operate utilizing a NORMAL power level setting or a standby setting. The standby setting may include a LOW power level setting and a sleep mode setting. One or more corresponding power adjustment signals may be generated based on the received one or more power setting signals. Power supplied to the control device and/or the one or more other devices may be adjusted based on the generated one or more corresponding power adjustment signals.

Systems and methods for processing signals are disclosed. The method may include, in a communication system comprising a plurality of devices, controlling the supply of one or more clock signals from a first clock source to one or more of the plurality of devices based on a signal communicated from a particular one of the plurality of devices to a second clock source and a request for a clock signal from one of the plurality of devices. The communicated signal may control an accuracy of the second clock source. The particular one of the plurality of devices may have highest accuracy requirements among the plurality of devices. At least one main clock signal may be generated for at least one of the plurality of devices utilizing an input clock signal received from the second clock source.

Method and apparatus for generating clocks for a handheld multistandard communication system

Method and apparatus for managing power consumption within a handheld multistandard communication system are disclosed and may comprise receiving a power setting signal from a control device within the handheld multistandard communication system. The power setting signal may indicate a desired power level setting. In accordance with the power setting signal, power supplied to at least one device within the handheld multistandard communication system may be adjusted based on a generated power adjustment signal. The power adjustment signal may control the power supplied to the device. The adjusted power supplied to the at least one device within the handheld multistandard communication system may correspond to one or more power level settings. The power level settings may comprise a NORMAL operating power level setting and/or a LOW power level setting.

Reducing power while in standby mode may comprise monitoring for an occurrence of at least one event requiring a transition out of a standby mode while utilizing a lower frequency, less accurate, and low power standby clock signal while operating in the standby mode. After receiving the occurrence of the event, an identity of the received event may be determined. In response to receiving the event, based on the determined identity of the event, a first and/or a second clock signal may be enabled, which has higher frequency and better accuracy and consumes more power than the standby clock signal. If the first and/or second clock signal is enabled, they may be disabled in order to re-enter the standby mode, which utilizes the standby clock signal while in standby mode.

Method and system for generating clocks for standby mode operation in a mobile communication device

Distributing clock signals within an electronic device may comprise determining a status of at least one gate that controls flow of a clock signal to at least one device coupled to the gate. One or more of the gates may be controlled based on this determined status and it may be determined whether the devices coupled to the gate are active or inactive. One or more gates that control the flow of the clock signal to the device may be turned OFF if the device is inactive. The status of one or more of the gates may be read from one or more registers mapped to the gates. One or more gates that control one or more active devices may be prevented from being deactivated based on the determined status of the gates. A current hardware setting of a gate may be overridden via software control.

Method and system for flexible clock gating control

Methods and apparatus for generating clocks for a handheld multistandard communication system are disclosed herein and may comprise receiving an input clock signal from a clock source whose accuracy is controlled by a selected device in a handheld multistandard communication system. The selected device may be characterized with a highest accuracy requirement among a plurality of devices. A main clock signal for at least one of the plurality of devices may be generated utilizing the received input clock signal. The generated main clock signal may be supplied to the plurality of devices within the handheld multistandard communication system in response to receiving a request from one of the plurality of devices. A real-time clock signal may be generated for low-power mode operation of the devices. The real-time clock signal may be generated by a real-time clock signal source and may be supplied to each device.

A method and system for ensuring data integrity in a data processing system may comprise monitoring when data for a specified device is available for error correction code generation, and receiving a first indication of the specified device, a second indication of the data, and a third indication of a size of the data during the monitoring. A new error correction code may be generated in hardware for the data based on the indicated size of the data and an indication may be provided to signal when generation of the new error correction code for a specified number of accesses for at least a portion of the data is complete. Detected errors may be corrected in software based on the newly generated error correction code. The first indication may be a device selection signal and the error correction code generation may be enabled or disabled via an enable signal.

Growing community of inventors

Los Altos, CA, United States of America

Paul Yang Lu