Abstract: A communication procedure has been developed that allows even a low-rate CPU to perform stable communication so as to realized wireless network nodes, which have a long communication distance and also have a long battery life. Each wireless network node decides its own time slot number by use of random numbers and transmits it after delaying the transmission by the number of time slots. When receiving the unique number from the wireless network node, a master unit transmits, to the wireless network node, an ACK signal together with the unique number. When receiving its unique number, the wireless network node gets into a sleep state for a period of time. In this way, each time communication is established, the number of active wireless network nodes is reduced.

Abstract: A communication procedure has been developed that allows even a low-rate CPU to perform stable communication so as to realized wireless network nodes, which have a long communication distance and also have a long battery life. Each wireless network node decides its own time slot number by use of random numbers and transmits it after delaying the transmission by the number of time slots. When receiving the unique number from the wireless network node, a master unit transmits, to the wireless network node, an ACK signal together with the unique number. When receiving its unique number, the wireless network node gets into a sleep state for a period of time. In this way, each time communication is established, the number of active wireless network nodes is reduced.

Abstract: A three dimensional microscope system having a microscope and an image processing apparatus for displaying an image by processing an image signal obtained by the microscope, comprises reflecting units which is provided so that first optical paths from an object are approximately symmetric, and objective lens which is provided so that second optical paths from the reflecting units are approximately symmetric, wherein shading data of each part of an image is measured when focal distance of the objective lens to an imaging surface is changed, focal position of the each part being detected, an all-in-focus image about depth of the object being formed in parallel with respect to time based on a pixel having a focused pixel value, contour images of the object being recognized and formed based on each all-in-focus image, and a three dimensional image being formed by synthesizing the recognized contour images.

Abstract: A real-time all-in-focus microscopic camera is able to display all-in-focus images as motion pictures of a high frame rate. The real-time all-in-focus microscopic camera comprises a movable focal mechanism (11A) of which focal length is changeable at a high repetition frequency, a lens driver (16) driving the mechanism (11A) to change the focal length corresponding to the repetition frequency, a high-speed imaging camera (12) imaging an object through the movable focal mechanism (11A) at a fast frame rate that allows images to be read out a plurality of times (for example, 8 times) every repetition period corresponding to the repetition frequency, and an image processor (13) processing the images acquired by the camera (12) into all-in-focus images in real time. The resultant all-in-focus images are displayed on a monitor (15). The image processor (13) is also able to perform processing for removing a ghost resulting from the fact that a blur is caused at the peripheral portion of an object to be observed.

Abstract: A fiber array camera has a plurality of optical fibers, a fiber assembly unit in which the optical fibers are bundled together and an image pickup surface comprising end surfaces of the optical fibers is formed, a light receiving lens for focusing an image of an object on the image pickup surface, and a plurality of light receiving elements, each of which is connected to one of the optical fibers and receives an optical signal for one pixel therefrom.

Abstract: A three-dimensional transmission type microscope system includes a transmission type micro scope; and an image processing apparatus which processes a pixel signal obtained as RGB signals and an in-focus degree signal from the transmission type micro scope, the image processing apparatus having a memory and a processing unit, wherein the in-focus degree signal and a transparent signal are related to each other and stored in the memory, the in-focus degree signal is converted into the transparent signal, and an image pixel signal is generated for displaying an image on a screen by the processing unit.