A speed sensor determines the velocity of an object. A first detector detects light emitted by a first emitter. The first detector includes multiple photodetectors connected in series. The photodetectors produce a current that is proportional to the amount of light incident to the photodetector. The first detector additionally includes a current-to-voltage converter and a threshold detector. The current-to-voltage converter converts the current produced by the photodetectors into a voltage and the threshold detector compares the voltage generated by the current-to-voltage converter with a threshold voltage. When an object passes in between the emitter and any of the photodetectors, the light incident to the photodetector is at least partially blocked, reducing the current produced by the photodetector. Any sufficient reduction in current that reduces the voltage generated by the current-to-voltage converter below the threshold of the threshold detector is quickly registered as an output signal of the threshold detector.

A video recording device (100) includes: a first imaging unit (123) (in camera) arranged on a same face as that of a display unit (121) of a casing of the device; a second imaging unit (124) (out camera) arranged on a face different from that of the display unit of the casing of the device; and an audio input unit (133) that inputs a command voice giving an instruction for recording a video signal. A control unit (104) sets a delay time until start of a recording process performed by the recording unit after input of the command voice to be different in accordance with the enabled imaging unit and sets a delay time of a case where the first imaging unit (123) is enabled to be longer than a delay time of a case where the second imaging unit (124) is enabled.

A video recording device (100) includes: a first imaging unit (123) (in camera) arranged on a same face as that of a display unit (121) of a casing of the device; a second imaging unit (124) (out camera) arranged on a face different from that of the display unit of the casing of the device; and an audio input unit (133) that inputs a command voice giving an instruction for recording a video signal. A control unit (104) sets a delay time until start of a recording process performed by the recording unit after input of the command voice to be different in accordance with the enabled imaging unit and sets a delay time of a case where the first imaging unit (123) is enabled to be longer than a delay time of a case where the second imaging unit (124) is enabled.

A remote controller includes a remote controller body, a control stick provided on the remote controller body, and a bracket mounted on the remote controller body. The bracket includes a connecting frame and a holding mechanism. The holding mechanism includes a first clamping member rotatably connected to the connecting frame and including a first clamping part, and a second clamping member comprising a second clamping part and a limiting part. The second clamping member is slidably mounted on the first clamping member and configured to adjust a spacing between the second clamping part and the first clamping part. The holding mechanism further includes a limiter provided on the first clamping member. The limiter is fitted with the limiting part and configured to limit a relative sliding position of the first and second clamping members.

A delivery monitoring system comprises a portable camera positioned on a delivery person; a camera activation application executed by a mobile electronic device to control a video-generating operation of the portable camera; and a special-purpose processor that outputs a data instruction to an electronic locking device to unlock an entrance to a location for delivering an item by the delivery person only when the portable camera is recording video.

A camera for detecting an object moved through a detection zone is provided that has an image sensor for recording image data, a reception optics having a focus adjustment unit for setting a focal position, a distance sensor for measuring a distance value from the object, and a control and evaluation unit connected to the distance sensor and the focus adjustment unit to set a focal position in dependence on the distance value, and to trigger a recording of image data at a focal position at which there is a focus deviation from a focal position that is ideal in accordance with the measured distance value, with the focus deviation remaining small enough for a required image definition of the image data.

A system and method is provided for using a case and/or skin having various components for improving and/or enhancing a camera (e.g., photographic, video, etc.) feature of a portable electronic device, such as a smartphone. The system preferably includes a case and/or skin having a lens (e.g., focusable lens) that is aligned with a lens on the smartphone, a light (e.g., a flash, etc.), and at least one shutter release button. An application operating on the smartphone may then be used to control the light (or flash) and to capture an image in response to a user depressing the shutter release button. Communications between the smartphone and the case can be accomplished via either a wired or wireless communication link, which may involve the inclusion of at least one transceiver (e.g., Bluetooth transceiver) and/or processor on the case.

A photography auxiliary device for a mobile communication unit, including: a bottom plate (1), a lens hole (11) arranged on the bottom plate (1), a shaft (7), walls surrounding the base plate (1), a gear (6) rotatably connected to the shaft (7), and a first rack (4) and a second rack (5) at opposite ends of the gear (6); the wall includes a first side wall (2) and a second side wall (3), the first side wall (2) is provided with a groove (21), the second side wall (3) is provided with a through hole (31); an end portion of the first rack (4) is provided with a shutter button (41) located in the through hole (31); an end portion of the second rack (5) is provided with an elbow (51) located in the groove (21); the second rack (5) is arranged in parallel with the first rack (4). When the shutter button (41) is pressed, the elbow (51) moves upward together with the second rack (5) and presses the volume button for driving the photography.

A photography auxiliary device for a mobile communication unit, including: a bottom plate (1), a lens hole (11) arranged on the bottom plate (1), a shaft (7), walls surrounding the base plate (1), a gear (6) rotatably connected to the shaft (7), and a first rack (4) and a second rack (5) at opposite ends of the gear (6); the wall includes a first side wall (2) and a second side wall (3), the first side wall (2) is provided with a groove (21), the second side wall (3) is provided with a through hole (31); an end portion of the first rack (4) is provided with a shutter button (41) located in the through hole (31); an end portion of the second rack (5) is provided with an elbow (51) located in the groove (21); the second rack (5) is arranged in parallel with the first rack (4). When the shutter button (41) is pressed, the elbow (51) moves upward together with the second rack (5) and presses the volume button for driving the photography.

A digital camera is provided with a vertically long camera body having an approximately rectangular solid shape. An LCD panel provided in a rear surface of the camera body is arranged such that longitudinal directions of the display screen and the camera body correspond to each other. The digital camera is operated through a touch panel provided in a lower portion of the display screen. In a taking mode, an image is displayed in a small size on an upper portion of the display screen. In reproducing, the camera body is rotated sideways by 90 degree. In a reproducing mode, display posture of the image is also rotated by 90 degree, and the image is displayed in a large size on the entire display screen.