Abstract: This invention provides a method of managing secret information that ensures that key information in the discard phase can be invalidated and that the system cannot be started. In method of managing secret information in a semiconductor device, the semiconductor device has an OTP (One Time Programmable) module, a security module and a processor. The OTP module further has an OTP memory for storing a secret information and a lifecycle flag for defining an operation phase and a discard phase, a sequencer for reading information stored in the OTP memory and a register for storing the information read by the sequencer. The security module performs a process by the secret information. The processor requests the process to the security module when changing the operation phase to the discard phase and sends a request to the security module to invalidate the secret information.

Abstract: When the external storage itself is replaced by a legitimate old key by a malicious third party, the security IP cannot recognize that it is the old key and can be easily rolled back, that is, the old key is regarded as the legitimate key and operates. An OTP is provided in the SoC, and the version of the key ring is managed in one control table area. Specifically, predetermined information that is updated in synchronization with the key update is written in the management table area of the OTP, and an authentication value is calculated by associating the predetermined information with a key ring including the update key. The calculated authentication value is added and registered when registering the key ring.

Abstract: An imaging device assembly includes a light source, an imaging device formed with a plurality of imaging elements, and a control device. Each imaging element (10) includes a light receiving portion (21), a first charge storage portion (22) and a second charge storage portion (24), and a first charge transfer control means (23) and a second charge transfer control means (24). Under the control of the control device, the imaging element (10) captures an image of an object on the basis of high-intensity light and stores first image signal charge into the first charge storage portion (22) during a first period, and captures an image of the object on the basis of low-intensity light and stores second image signal charge into the second charge storage portion (24) during a second period. The control device obtains an image signal on the basis of the difference between the first image signal charge and the second image signal charge.

Abstract: Provided is an electronic device capable of reducing the possibility of malfunction. An electronic device is provided with: a first substrate including a drive circuit; a second substrate including a light-emitting unit driven by the drive circuit and mounted on one surface side of the first substrate; and a light-shielding unit provided on the first substrate and configured to shield at least a part of the drive circuit from light emitted by the light-emitting unit.

Abstract: An imaging device assembly includes a light source, an imaging device formed with a plurality of imaging elements, and a control device. Each imaging element (10) includes a light receiving portion (21), a first charge storage portion (22) and a second charge storage portion (24), and a first charge transfer control means (23) and a second charge transfer control means (24). Under the control of the control device, the imaging element (10) captures an image of an object on the basis of high-intensity light and stores first image signal charge into the first charge storage portion (22) during a first period, and captures an image of the object on the basis of low-intensity light and stores second image signal charge into the second charge storage portion (24) during a second period. The control device obtains an image signal on the basis of the difference between the first image signal charge and the second image signal charge.

Abstract: An image capture device assembly includes a light source that emits a reference light pattern, an image capture device, and a control device that controls the light source and the image capture device. The light source emits the reference light pattern to a subject with high brightness and low brightness, respectively, under the control of the control device. The image capture device captures an image of the reference light pattern and the subject in a high brightness irradiation state and outputs a first image signal to the control device. The image capture device captures an image of at least the subject in a low brightness irradiation state and outputs a second image signal to the control device. The control device generates a reference light pattern image signal from a difference between the first image signal and the second image signal.

Abstract: A damping device includes a forced phase shifter 3a to calculate a force phase shift to be added to the inverse transfer characteristic stored in the adaptive control algorithm; a fluctuation calculator 3b to calculate a fluctuation of the magnitude of a command vector having amplitude information and phase information when the forced phase shift is added; a memory 3c to preliminarily store a variation in the phase error of the vibration transfer characteristic corresponding to the fluctuation of the magnitude of the command vector; and a phase error estimator 3d to estimate the phase error of the vibration transfer characteristic based on the fluctuation of the magnitude of the command vector calculated by the fluctuation calculator 3b and the variation in the phase error of the vibration transfer characteristic corresponding to the fluctuation of the magnitude of the command vector stored in the memory 3c.

Abstract: An image capture device assembly includes: a light source 110 that emits a reference light pattern; an image capture device 120; and a control device 130 that controls the light source and the image capture device. The light source 110 emits the reference light pattern to a subject 140 with high brightness and low brightness, respectively, under the control of the control device 130, the image capture device 120 captures an image of the reference light pattern and the subject 140 in a high brightness irradiation state and outputs a first image signal to the control device 130, or captures an image of at least the subject 140 in a low brightness irradiation state and outputs a second image signal to the control device 130, and the control device 130 generates a reference light pattern image signal from a difference between the first image signal and the second image signal.

Abstract: There is provided a motor controller capable of suppressing the rotation of a motor at the time of discharging an electric accumulator, and a construction machine provided with the motor controller. A motor controller 10 is provided with a current controller 1 for controlling an electric current supplied from an electric accumulator E to a motor M, and a rotation detector 2 for detecting the rotation of the motor M. The current controller 1 supplies only a d-axis current to the motor M according to a discharge command. If the rotation of the motor M is detected by the rotation detector 2 at the time of discharging the electric accumulator E, the current controller 1 controls the d-axis current so as to suppress the rotation of the motor M.

Abstract: There is provided a motor controller capable of suppressing the rotation of a motor at the time of discharging an electric accumulator, and a construction machine provided with the motor controller. A motor controller 10 is provided with a current controller 1 for controlling an electric current supplied from an electric accumulator E to a motor M, and a rotation detector 2 for detecting the rotation of the motor M. The current controller 1 supplies only a d-axis current to the motor M according to a discharge command. If the rotation of the motor M is detected by the rotation detector 2 at the time of discharging the electric accumulator E, the current controller 1 controls the d-axis current so as to suppress the rotation of the motor M.

Abstract: A light-emitting device formed by easily mounting a light-emitting element onto a supporting base and a method of manufacturing the light-emitting device are provided. A light-emitting device includes: a supporting base including a depression section on a top surface thereof, the depression section having an inclined surface on a side wall thereof; a first light-emitting element arranged on a bottom surface of the depression section; and a second light-emitting element arranged on the first light-emitting element and the supporting base.

Abstract: The present invention is directed to improve reliability by preventing deterioration in the structure of an inner wall of a water channel caused by galvanic corrosion. A heat sink in which a water channel of a cooling fluid is formed by stacking and bonding a plurality of thin plates, in which a surface in the water channel is made of the same metal material except for at least an end of a bonded part of the thin plates.

Abstract: The present invention is directed to improve reliability by preventing deterioration in the structure of an inner wall of a water channel caused by galvanic corrosion. A heat sink in which a water channel of a cooling fluid is formed by stacking and bonding a plurality of thin plates, in which a surface in the water channel is made of the same metal material except for at least an end of a bonded part of the thin plates.

Abstract: A semiconductor laser device has a heat sink of which multiple laminated plates are constituted and a semiconductor laser element mounted on upper surface of the heat sink. The heat sink has a channel in which a coolant flows inside thereof. The heat sink includes a channel-forming plate portion that forms the channel and a mounting plate portion that forms an upper surface of the heat sink that comes into contact with the channel. The mounting plate portion is made of material having a thermal expansion coefficient, which is closer to that of the semiconductor laser element than that of the channel-forming plate portion.

Abstract: The present invention provides a light emitting device solving weakness caused by bonding between first and second light emitting elements and a method of manufacturing the same. A chip-shaped first light emitting element and a second light emitting element overlapped each other are disposed on a supporting base. Four island-shaped projections are provided on the top face of the supporting base, and support the second light emitting element. The projections are formed by wet-etching or dry-etching the supporting base, and a pad electrode is provided on the top face of the projection. The pad electrode is electrically connected to the second light emitting element and is also electrically connected to a wire.

Abstract: The present invention provides a light emitting device solving weakness caused by bonding between first and second light emitting elements and a method of manufacturing the same. A chip-shaped first light emitting element and a second light emitting element overlapped each other are disposed on a supporting base. Four island-shaped projections are provided on the top face of the supporting base, and support the second light emitting element. The projections are formed by wet-etching or dry-etching the supporting base, and a pad electrode is provided on the top face of the projection. The pad electrode is electrically connected to the second light emitting element and is also electrically connected to a wire.

Abstract: A light-emitting device formed by easily mounting a light-emitting element onto a supporting base and a method of manufacturing the light-emitting device are provided. A light-emitting device includes: a supporting base including a depression section on a top surface thereof, the depression section having an inclined surface on a side wall thereof; a first light-emitting element arranged on a bottom surface of the depression section; and a second light-emitting element arranged on the first light-emitting element and the supporting base.

Abstract: A semiconductor laser apparatus having a first clad layer, a first guide layer, an active layer, a second guide layer, and a second clad later formed in the order listed is disclosed. A layer serving as an optical waveguide is formed between the first clad layer and the second clad layer and wherein the layer serving as an optical waveguide is formed with such a thickness that not only light of a fundamental mode but also light of a higher-order mode is guided. An absorption layer absorbing the light of a higher-order mode is formed in a position to suppress only the oscillation of the light of a higher-order mode, the absorption layer being formed as a layer forming part of the layer to serve as an optical waveguide.

Abstract: The present invention is directed to improve reliability by preventing deterioration in the structure of an inner wall of a water channel caused by galvanic corrosion. A heat sink in which a water channel of a cooling fluid is formed by stacking and bonding a plurality of thin plates, in which a surface in the water channel is made of the same metal material except for at least an end of a bonded part of the thin plates.

Abstract: A semiconductor laser device has a heat sink of which laminated plural plates are constituted and a semiconductor laser element mounted on upper surface of the heat sink. The heat sink has a channel in which a coolant flows inside thereof. The heat sink includes a channel-forming plate portion that forms the channel and a mounting plate portion that forms an upper surface of the heat sink that comes into contact with the channel. The mounting plate portion is made of material having a thermal expansion coefficient, which is nearer that of the semiconductor laser element than that of the channel-forming plate portion.