Abstract: The invention discloses a container for a non-rectangular reticle, adapted for accommodating an elliptical reticle, and including a cover and a base which are configured to define an elliptical space when engaged with each other. The cover and the base have reticle retainers and reticle supports, respectively, which are configured to securely hold the elliptical reticle.

Abstract: A signal calibration method, a memory storage device, and a memory control circuit unit are provided. The signal calibration method includes: generating a clock signal and a data strobe signal according to an internal clock signal; respectively transmitting the clock signal and the data strobe signal to a target volatile memory module among multiple volatile memory modules through a first signal path and a second signal path; obtaining a shift value between the data strobe signal and the clock signal at the target volatile memory module; and storing an initial delay setting of the data strobe signal according to delay information of the data strobe signal in response to the shift value being greater than a threshold value.

Abstract: A perforation detection device of a contact piece type to be built into a camera. A detection section of a first contact piece arranged on the rear surface side of a path in which the perforations of a film advance in a film feeding stage is constructed of a metal ball which is a separate member from that of the first contact piece. This metal ball comes in pressure contact with a second contact piece arranged on the front surface side of the film as the perforations pass. When the metal ball faces a perforation of the film, this metal ball comes in contact with both the first and the second contact pieces to provide a continuity between the first and second contact pieces, so that the position of the perforation is detected. In the film feeding stage, the metal ball comes in rolling contact with the film surface. The contact pieces have a very small resistance to the film feed, and it is scarcely possible that the film will be injured.