Abstract: A radar apparatus is installed in a vehicle and receives a reflection wave from a target to derive information about the target. The radar apparatus includes a signal processor to extract a peak signal that is obtained from a difference frequency between a transmission signal whose frequency changes in a prescribed cycle and a reception signal representing reception of a reflection wave that is generated from a transmission wave of the transmission signal reflected by the target, in each of an up period in which the frequency of the transmission signal increases and a down period in which the frequency decreases; and to determine whether a target information derivation environment is good or bad based on a number of the peak signals each of which corresponds to a static object having a plurality of angle information.

Abstract: A storage device includes a disk, a head configured to carry out data writing and data reading with respect to the disk, and including a heater that generates heat to cause the head to thermally expand towards the disk, a non-volatile semiconductor memory, and a controller configured to set an amount of expansion of the head, based on data read from the disk during a predetermined period of time after the storage device has been turned on, and write data from a host in the disk or the non-volatile semiconductor memory during the predetermined period of time, based on the amount of expansion.

Abstract: A storage device includes a first nonvolatile memory that includes memory cells, each capable of storing data of a first number of bits, a second nonvolatile memory of which memory capacity is larger than a memory capacity of the first nonvolatile memory, and a memory controller is configured to control the first nonvolatile memory to store data of a second number of bits that is smaller than the first number in each of at least a part of the memory cells according to a usage amount of the memory cells.

Abstract: A storage device includes a first non-volatile storage unit, a second non-volatile storage unit that includes a plurality of semiconductor memory blocks and is capable of executing data access at a speed faster than the first non-volatile storage unit, and a control unit configured to acquire an error value representing an amount of errors included in data read from a block of the second non-volatile storage unit, and carry out a backup of the data either in the first or second non-volatile storage unit, depending on the error value.

Abstract: A storage device includes a disk medium having a first recording region and a second recording region, a non-volatile semiconductor memory, and a controller. The controller is configured to write data of a first type into tracks of the first recording region that partially overlap with each other, to write for caching data of a second type into tracks of the second recording region, and to write for caching the data of the second type stored in the disk medium into the non-volatile semiconductor memory.

Abstract: A radar device according to an embodiment includes a transmission unit, a reception unit, and a processing unit. The transmission unit emits a transmission wave relating to a frequency-modulated transmission signal. The reception unit receives a reflected wave acquired by reflecting the transmission wave on an object as a reception signal. The processing unit detects object data corresponding to the object from the reception signal, outputs the object data to the vehicle control device that controls the vehicle, and removes object data satisfying the removal condition that is a condition used for determining whether or not object data is to be removed from an output target for the vehicle control device and includes at least the distance and the relative speed of the object data with respect to the speed of the vehicle as conditions from output targets for the vehicle control device.

Abstract: There is provided a radar apparatus. A derivation unit derives target information which is information relating to a target detected on the basis of a transmission signal of which a frequency changes with a predetermined cycle and a reception signal corresponding to a reflected wave coming from an object at which a transmission wave corresponding to the transmission signal is reflected. A determination unit determines reliability of the target information. A decision unit decides whether the detected target is true or false, based on the target information. The decision unit changes a method of deciding whether the target is true or false in accordance with a determination result of the reliability by the determination unit.

Abstract: According to one embodiment, a disk storage apparatus includes a disk, a detector, and a controller. The disk includes a first recording area for recording with a first track density, and a second recording area for recording with a second track density lower than the first track density. The detector is configured to detect a variation of an outside environment. The controller is configured to select a nonvolatile memory or the second recording area as a storage destination of write data transferred from a host, based on a content of the variation of the outside environment detected by the detector, and a state of capability or incapability of storage of the nonvolatile memory.

Abstract: A storage device includes a first nonvolatile memory that includes memory cells, each capable of storing data of a first number of bits, a second nonvolatile memory of which memory capacity is larger than a memory capacity of the first nonvolatile memory, and a memory controller is configured to control the first nonvolatile memory to store data of a second number of bits that is smaller than the first number in each of at least a part of the memory cells according to a usage amount of the memory cells.

Abstract: A radar apparatus pairs an angle peak of an up section in which a frequency of a transmission signal increases and an angle peak of a down section in which the frequency of the transmission signal decreases based on a reliability of a pair. The radar apparatus derives a first index that shows a highest level of the reliability of a pair in a plurality of pairs of the angle peaks and a second index that shows another level of the reliability of another pair, the second index being lower than the first index in the reliability but being higher than other indexes excluding the first index, and also determines a validity of the pair having the highest level of the reliability based on a comparison result between the first index and the second index.

Abstract: A radar apparatus is installed in a vehicle and receives a reflection wave from a target to derive information about the target. The radar apparatus includes a signal processor to extract a peak signal that is obtained from a difference frequency between a transmission signal whose frequency changes in a prescribed cycle and a reception signal representing reception of a reflection wave that is generated from a transmission wave of the transmission signal reflected by the target, in each of an up period in which the frequency of the transmission signal increases and a down period in which the frequency decreases; and to determine whether a target information derivation environment is good or bad based on a number of the peak signals each of which corresponds to a static object having a plurality of angle information.

Abstract: According to one embodiment, a storage device includes a first nonvolatile storing unit having a predefined first management area, and a second nonvolatile storing unit configured to process data at a higher rate than the first nonvolatile storing unit. The first nonvolatile storing unit stores, in the first management area, first management information associated with the first nonvolatile storing unit, and second management information associated with the second nonvolatile storing unit.

Abstract: According to one embodiment, a disk storage apparatus includes a disk, a detector, and a controller. The disk includes a first recording area for recording with a first track density, and a second recording area for recording with a second track density lower than the first track density. The detector is configured to detect a variation of an outside environment. The controller is configured to select a nonvolatile memory or the second recording area as a storage destination of write data transferred from a host, based on a content of the variation of the outside environment detected by the detector, and a state of capability or incapability of storage of the nonvolatile memory.

Abstract: According to one embodiment, a storage apparatus includes a first storage medium which is nonvolatile, a second storage medium which is nonvolatile, a cache controller, and a main controller. An access speed of the second storage medium is lower, and a storage capacity of the second storage medium is larger than the first storage medium. The main controller controls the cache controller and accesses the second storage medium based on an access request from a host apparatus. The cache controller writes, in a multiplexed manner, data to be stored in the first storage medium to at least two areas in which deterioration of storage performance has been detected based on a result of access to the first storage medium.

Abstract: According to one embodiment, a disk storage apparatus includes a disk, a detector, and a controller. The disk includes a first recording area for recording with a first track density, and a second recording area for recording with a second track density lower than the first track density. The detector is configured to detect a variation of an outside environment. The controller is configured to select a nonvolatile memory or the second recording area as a storage destination of write data transferred from a host, based on a content of the variation of the outside environment detected by the detector, and a state of capability or incapability of storage of the nonvolatile memory.

Abstract: According to one embodiment, a disk storage apparatus includes a disk, a detector, and a controller. The disk includes a first recording area for recording with a first track density, and a second recording area for recording with a second track density lower than the first track density. The detector is configured to detect a variation of an outside environment. The controller is configured to select a nonvolatile memory or the second recording area as a storage destination of write data transferred from a host, based on a content of the variation of the outside environment detected by the detector, and a state of capability or incapability of storage of the nonvolatile memory.

Abstract: There is provided a radar apparatus. A derivation unit derives target information which is information relating to a target detected on the basis of a transmission signal of which a frequency changes with a predetermined cycle and a reception signal corresponding to a reflected wave coming from an object at which a transmission wave corresponding to the transmission signal is reflected. A determination unit determines reliability of the target information. A decision unit decides whether the detected target is true or false, based on the target information. The decision unit changes a method of deciding whether the target is true or false in accordance with a determination result of the reliability by the determination unit.

Abstract: In a motor vehicle having an engine mounted in an engine room, an exhaust tube system extending from the engine toward a rear end of the vehicle and a fuel tank positioned near the rear end of the vehicle, there is proposed an improved under body structure of the vehicle, by which the fuel tank is effectively cooled during running of the vehicle. The under body structure comprises an under cover positioned below the engine room. The under cover is formed with a longitudinally extending groove whose opening faces downward to contact a relatively low temperature air. A floor panel is formed with a longitudinally extending tunnel whose opening faces downward. The tunnel receives therein the exhaust tube system without contacting the same. A heat insulating plate extends in and along the tunnel in a manner to define in the tunnel an air flow passage which is insulated from the exhaust tube system. The air flow passage has a rear open end directed toward the fuel tank.

Abstract: An underfloor structure for automobile capable of reducing aerial resistance under a floor of the automobile and improving its cooling capability against heat-radiant parts such as break units, a transmission etc. The underfloor structure includes an undercover for closing an underside of a high-pressure section. The undercover consists of a pair of ducts which communicates with the high-pressure section to thereby discharge heated air contained therein toward rear wheels of the automobile and a narrow part which is arranged between the discharging parts to narrow an air flow flowing from a front of the automobile along an underside of the undercover. In one form of the ducts, they are formed so as to face lateral sides of the automobile, respectively.