摘要:
A water-resistant camera has a lens barrel movable toward and away from a fluid-tight camera body for selecting the position of the lens barrel between wide-angle and telephoto positions. The camera has or can be combined with an automatic air-pressure adjusting mechanism for automatically keeping the air pressure in the inner space of the camera at a substantially constant level irrespective of the position of the lens barrel between the wide-angle position and the telephoto position. Therefore, the lens barrel can smoothly be moved with respect to the camera body upon switching between the wide-angle and telephoto positions.
摘要:
In the present invention, by using a light-responsive component which can be used in photographing with a sensitivity thereof set to a sensitivity different from an indicated sensitivity, sensitivity information recorded at the light-responsive component by a photographing device can be read at a photo lab, and efficient printing operations can be carried out. While carrying out photographing on a film which can be used in photographing with a sensitivity thereof set to a sensitivity different from the indicated sensitivity in a camera, sensitivity information showing a set sensitivity at a time of photographing is recorded on the film. The film is developed at a photo lab, and the sensitivity information is read by a scanner component of an inputting machine. Printing is carried out by an outputting machine in accordance with the sensitivity information, and the sensitivity information is reflected in printed results.
摘要:
A camera is disclosed which is capable of winding and rewinding a film and adjusting a focal distance by use of a single motor. In the camera, the forward rotation of the motor is used to wind the film, and when the film winding operation is completed after termination of photographing, on detecting the end of the film, a torque detect mechanism switches a planetary clutch mechanism to connect the motor with a film rewinding mechanism. Thus, it is possible to perform both the film winding and rewinding operations by use of the rotation of the motor in the same direction. Also, when, with the planetary clutch mechanism connected with the film winding mechanism, the motor is rotated reversely, then the power transmission system is switched over to a focal distance varying mechanism, whereby the focal distance can be adjusted.
摘要:
A drive mechanism for a zoom lens system consisting of first and second lens groups has a movable lens barrel fixedly holding the first lens and cam structure consisting of a cam member provided on the second lens group and a cam follower member on the movable lens barrel. The movable lens barrel moves forward or rearward to shift the second lens group forward or rearward relative to the first lens group along the optical axis of the zoom lens system via the cam member so as to continuously change the focal length of the zoom lens system. The cam member is mounted on the movable lens barrel to change the curve of the cam surface relative to the cam follower member only in a middle focal length range.
摘要:
The present invention provides a camera comprising such a function for self-photographing that a self-photographer cannot only determine whether or not he or she is within the angle of view but can also determine his or her position within the angle of view more accurately than in the prior art. The present invention provides a camera that photographs a subject present within a photographing angle of view, according to a photographing operation, the camera comprising an indicator, and an optical path regulating member that allows, during self-photographing, a photographer to view the indicator with information on the photographer's own position within the photographing angle of view.
摘要:
A MIMO receiving apparatus that can demodulate a spatially multiplexed signal without using any division operation requiring a large quantity of operation resources. In the MIMO receiving apparatus, stream separation section (105) separates a spatially multiplexed signal into a plurality of streams based on numerator submatrix A. Numerator submatrix A is determined according to channel matrix H and a canceller scheme and corresponds to a numerator of stream separation matrix S that equalizes the phase and amplitude of the spatially multiplexed signal. Denominator part calculation section (108) calculates a denominator (denominator coefficient) of stream separation matrix S and correction section (117) corrects a threshold determined according to a modulation scheme of the spatially multiplexed signal using the denominator (denominator coefficient) of stream separation matrix S. Demapping sections (109-1 to 109-3) calculate likelihoods of the plurality of streams through a threshold decision using the corrected threshold.
摘要:
A MIMO-OFDM transmission and reception apparatus is provided which allows high accuracy estimation of frequency offset, high accuracy estimation of a transmission path fluctuation and high accuracy synchronization/signal detection. A mapping section generates a plurality of OFDM signals. In these OFDM signals, some pilot carriers are assigned to the same carrier position and orthogonal sequences are assigned to the same time slot in the same carrier position.
摘要:
A communication method in a communication terminal apparatus includes at least one antenna and performs wireless communication with a base station apparatus including a plurality of transmission antennas. The method includes receiving a signal transmitted from the base station apparatus using the antenna and transmitting a feedback signal regarding transmission antenna selection at the base station apparatus, to the base station apparatus using the antenna.
摘要:
A MIMO receiving apparatus that can demodulate a spatially multiplexed signal without using any division operation requiring a large quantity of operation resources. In the MIMO receiving apparatus, stream separation section (105) separates a spatially multiplexed signal into a plurality of streams based on numerator submatrix A. Numerator submatrix A is determined according to channel matrix H and a canceller scheme and corresponds to a numerator of stream separation matrix S that equalizes the phase and amplitude of the spatially multiplexed signal. Denominator part calculation section (108) calculates a denominator (denominator coefficient) of stream separation matrix S and correction section (117) corrects a threshold determined according to a modulation scheme of the spatially multiplexed signal using the denominator (denominator coefficient) of stream separation matrix S. Demapping sections (109-1 to 109-3) calculate likelihoods of the plurality of streams through a threshold decision using the corrected threshold.
摘要:
A MIMO-OFDM transmission and reception apparatus is provided which allows high accuracy estimation of frequency offset; high accuracy estimation of a transmission path fluctuation and high accuracy synchronization/signal detection. A mapping section generates a plurality of OFDM signals. In these OFDM signals, some pilot carriers are assigned to the same carrier position and orthogonal sequences are assigned to the same time slot in the same carrier position.