Improved memory devices, circuitry, and data methods are described that facilitate the detection and correction of data in memory systems or devices by increasing the data area of user data being covered by the ECC code. This averages any possible bit errors over a larger data area and allows a greater number of errors to be corrected by a combining the ECC codes in the coverage area without substantially changing the overall size of ECC codes being stored over a single sector approach. In one embodiment of the present invention, the size of the data block utilized for ECC coverage is variable and can be selected such that differing areas of the memory array or data types can have a differing ECC data coverage sizes. It is also noted that the ECC algorithm, math base or encoding scheme can also be varied between these differing areas of the memory array.

Variable sector-count ecc

The embodiments described herein methods and devices that enhance the endurance of a non-volatile memory (e.g., flash memory). The method includes obtaining, for each of the plurality of die, an endurance metric. The method also includes sorting the plurality of die into a plurality of die groups based on their corresponding endurance metrics, where each die group includes one or more die and each die group is associated with a range of endurance metrics. In response to a write command specifying a set of write data, the method further includes writing the write data to the non-volatile memory by writing in parallel subsets of the write data to the one or more die assigned to a single die group of the plurality of die groups.

Device and method for managing die groups

A system and method for power control in a physical layer device. Energy savings during an active state can be produced through the monitoring of a received signal level by a receiver in a physical layer device. In one embodiment, based on an indication of the received signal level or other communication characteristic of the transmission medium, a control module can adjust the signal level or amplitude and/or adjust the voltage supply.

System and method for power control in a physical layer device

Systems and methods are disclosed for storing the firmware and other data of a flash memory controller, such as using a RAID configuration across multiple flash memory devices or portions of a single memory device. In various embodiments, the firmware and other data used by a controller, and error correction information, such as parity information for RAID configuration, may be stored across multiple flash memory devices, multiple planes of a multi-plane flash memory device, or across multiple blocks or pages of a single flash memory device. The controller may detect the failure of a memory device or a portion thereof, and reconstruct the firmware and/or other data from the other memory devices or portions thereof.

Systems and methods for storing and recovering controller data in non-volatile memory devices

Memory devices, circuitry, and data methods are described that facilitate the detection and correction of data in memory controllers, memory systems, and/or non-volatile memory devices by allowing the number of ECC check bytes being utilized to be varied to increase or decrease the ECC check depth. This allows the depth of the ECC coverage (the overall number of bit errors detectable and/or correctable in each sector by the stored ECC check bytes) to be selected based on the application, the amount of available data storage for ECC check bytes in the overhead/spare area associated with the sector, the version of memory device or controller being utilized, or the number of errors being seen in the memory system, device, bank, erase block, or sector (the error incidence rate), while the base data size of the area (sector) covered by the ECC check bytes stays the same.

Variable strength ECC

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

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

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.

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

Methods and systems for processing video data are provided herein and may comprise receiving an input encoded bitstream to be processed. A portion of the received input encoded bitstream may be matched against stored indexed variable length code entries having a corresponding video information entry. If a match is found, the matched portion may be removed from the input encoded bitstream. The matching and/or the removing may be offloaded to at least one on-chip coprocessor. The coprocessor may comprise a table look-up (TLU) module with a plurality of on-chip memories, such as RAM, and may be adapted to store one or more entries from a VLC encoding/decoding table. For example, an on-chip memory may be utilized to store a VLC code entry and another on-chip memory may be utilized to store the corresponding VLC code entry attributes that each code may represent, such as LAST, RUN, and LEVEL entries.

Method and system for decoding variable length code (VLC) in a microprocessor

Methods and systems for on-chip processing of video data are disclosed herein. In one aspect of the method, a plurality of lines in a current video frame may be received on a chip. A portion of a plurality of previously processed video frames, occurring prior to the plurality of lines in the current video frame, may be stored in a first memory outside the chip. A portion of the received plurality of lines in the current video frame may be stored in a memory on the chip. A first portion of the received plurality of lines in the current video frame may be encoded on the chip utilizing the stored portion of the previously processed video frames. The stored portion of the received plurality of lines in the current video frame may be converted to YUV format.

Paul Lu

Papers

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

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

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

Method and system for decoding variable length code (VLC) in a microprocessor

Method and system for video compression and decompression (codec) in a microprocessor