Abstract: An example system and method may provide an importance score for a data file based on the content of the data file. An importance score may be used to determine whether to store the data file in a regular reliability storage media or in a higher reliability storage media. A controller generates a document vector for a data file based on content processed from a data file. The data file includes metadata and the content. The controller generates, using an artificial intelligence (AI) model and the document vector, a data file importance score for the data file. The controller then stores the data file in one of the first data storage zone and the second data storage zone based on the data file importance score.

Abstract: A data storage device is disclosed comprising a non-volatile storage medium (NVSM), and a head configured to access the NVSM. During a first interval, the head is used to write first data to a first segment of the NVSM, and during a second interval, the head is used to read the first data from the first segment of the NVSM and erase at least part of the first data from the first segment of the NVSM.

Abstract: In one embodiment, a sensor device includes a sensor configured to obtain sensor data and a communication interface configured to communicate with a set of secondary sensor devices. The set of secondary sensor devices comprise a set of secondary sensors and a set of secondary processing devices. The set of secondary sensors obtain additional sensor data. The set of secondary processing devices process the additional sensor data based on a set of secondary machine learning models, and generate activation data based on the additional sensor data. The sensor device also includes a processing device. The processing device is also configured to receive the activation data from the set of secondary sensor devices and cause the sensor to obtain first sensor data based on the activation data. The processing device is further configured to generate one or more inferences based on the first sensor data and a machine learning model.

Abstract: This disclosure relates to an apparatus for object detection. The apparatus comprises a video camera, an object detector, and a controller. The video camera may be configured to generate a video stream of frames. The object detector may be configured to accept the video stream as input data and to perform object detection. The controller may be coupled to the video camera and the object detector. The controller may be configured to manage object detection in order to satisfy a performance metric and/or operate within an operational constraint.

Abstract: A data storage device is disclosed comprising a head actuated over a recording medium, wherein the head comprises a laser configured to heat the recording medium. A mode hop map is generated for a write power applied to the laser during a write operation. The write power is applied to the laser during the write operation and the write power is adjusted in response to the mode hop map.

Abstract: Remote neural network retraining for surveillance systems is disclosed. In some cases, systems and methods enable remote training and retraining of neural networks, while processing data in real life using the trained and retrained neural networks locally at the surveillance system. The surveillance system can determine a change of location and can retrain the neural network and/or initiate the retraining of the neural network remotely, such as on a cloud server, to retrain the neural network based on new image and/or video data taken from the new location. The remote server can transmit the retrained neural network and/or weights for nodes of the retrained neural network back to the surveillance system. The surveillance system can then update its neural network and process future image and/or video data based on the retrained neural network and/or weights.

Abstract: A data storage system may include multiple data storage devices, such as solid-state drives, an enclosure housing the devices, and a thermal bridge positioned in a gap between and in contact with each of the enclosure and a device, where the enclosure is cooler than the device. Thus, heat is conducted away from a hot spot of the device and to the enclosure. The thermal bridge may be flexible enough to bridge different sized gaps, while stiff enough to generate contact forces applied to the enclosure and the device. For example, the thermal bridge may be constructed primarily of copper and configured to function like a compression spring.

Abstract: A data storage device is disclosed comprising a first head actuated over a first disk surface, wherein the first head comprises a write coil and a write-assist component. First data is written to the first disk surface using the write coil and the write-assist component of the first head. An electrical bias is applied to the write-assist component of the first head to physically damage the write-assist component, thereby rendering the first disk surface read-only.

Abstract: A data storage system may include multiple data storage devices, such as hard disk drives, a cooling fan, and a sound balancer structure between the fan and the drives. The sound balancer is intentionally positioned where it substantially balances, about the center of rotation of and along at least one axis of a fan-facing storage device, the sound pressure from the fan that impinges upon the fan-facing face of the storage device. This redistribution of the sound pressure suppresses sound pressure-induced torque upon and therefore rotational vibration of the storage device, which in turn enhances the track following capability of the storage device.

Abstract: A data storage device is disclosed comprising a first disk surface comprising a plurality of data tracks, and a first head actuated over the first disk surface. First data is written to the first disk surface based on a first format. At least part of the first disk surface is reformatted based on a second format, wherein the second format defines a lower recording density for the first disk surface as compared to a recording density defined by the first format. After reformatting the at least part of the first disk surface, second data is written to the first disk surface based on the second format and the first data is read from the first disk surface based on the first format.

Abstract: A data storage device is disclosed comprising a head actuated over a disk, wherein the head comprises a fly height actuator (FHA). An FHA control signal is applied to the FHA, wherein the FHA control signal comprises a rectangular wave having a duty cycle in the range of ten percent to thirty percent. While applying the FHA control signal to the FHA, the head touching down onto the disk is detected.

Abstract: A data storage device is disclosed comprising a head actuated over a disk, wherein the head comprises a laser configured to heat the disk while writing data to the disk. A write power is applied to the laser in order to write data to the disk during a write operation. A determination is made as to whether the laser power should be in an off state after the write operation. After the write operation, the laser power is gradually decreased to the off state based on a first decrease function.

Abstract: A method for magnetic data recording that calibrates for magnetic thermal protrusion of elements of a magnetic data recording system. The method involves performing a series of burst mode magnetic data writings using a magnetic recording head that includes a write element, a thermal fly height control element and a near field transducer. The burst mode writings are performed at various levels of thermal fly height control power. This can be use to determine the relationship between signal amplitude and thermal fly height control power with thermal protrusion being affected only by the thermal fly height control element and not from thermal heating of the near field transducer or write element. Then, thermal fly height control can be adjusted to achieve the desired signal amplitude for recording with the near field transducer and write element operating at a thermal steady state.

Abstract: The present disclosure generally relates a method for removing a smear from a write head in a HAMR system. The smear can be removed by sufficiently heating the smear in an oxidative atmosphere to oxidize the smear. The material buildup that forms the smear has carbon, that when oxidized, is a gaseous product that leaves the write head with a reduced and/or eliminated smear. The heating occurs when the head is disposed in the parking location on the ramp remote from the magnetic media. Heating is possible using the same heat source for the HAMR head that is used to write data to the magnetic media.

Abstract: Described herein is a magnetic storage device that includes a magnetic disk and an arm rotatably movable relative to the magnetic disk. The magnetic storage device also includes a head actuator that is co-movable with the arm. The head actuator includes at least one piezo-electric element and at least one electronic communication signal line. Additionally, the magnetic storage device includes a read-write head coupled to the head actuator. The head actuator is operable to move the read-write head relative to the arm responsive to a first electronic signal received from the at least one electronic communication signal line. The magnetic storage device further includes a sensor module that is configured to determine whether the read-write head has touched down against the magnetic disk based on, at least partially, a second electronic signal received from the head actuator via the at least one electronic communication signal line.