Abstract: A maximum resilience point (M) of a head (1) is positioned above a center (C) of a hitting surface. On the maximum resilience point (M), (t2−t1) measured in accordance with a pendulum test determined by USGA has a maximum value. When coordinates of the center (C) of the hitting surface are set to be (0, 0) and coordinates of the maximum resilience point (M) are set to be (x, y), y is greater than 0 mm and is equal to or smaller than 10 mm. The value of (t2−t1) on the maximum resilience point (M) is 250·10−6 second or more. The value of (t2−t1) on the center (C) of the hitting surface is smaller than 250·10−6 second. y may be set to be equal to or greater than −5 mm and to be smaller than 0 mm. x may be set to be equal to or greater than −10 mm and to be smaller than 0 mm. x may be set to be greater than 0 mm and to be equal to or smaller than 10 mm.

Abstract: To suppress the degradation of the image quality of movies that are played on an image display device.

Abstract: Commands and data transferred via a network line NL are input to an ASP terminal portion 20 via a network interface controller 220. A first CPU loads a client application corresponding to the command and generated user interface image data via a graphics controller 210. A video signal conversion circuit 310 receives image data from the graphics controller 210 and transfers the processed image data to an LCD drive circuit 330. LCD drive circuit 330 drives an LCD 332 in response to the received image data to project the desired image data onto a projection screen.

Abstract: In response to a requirement of transferring a file from a personal computer PC to a projector 10 that is output by dragging and dropping a corresponding file icon onto a projector icon, a CPU 50 requires setting of a password. The CPU 50 maps the preset password to a file and transfers the file with the password to an external storage device of the projector 10. The projector 10 requires input of a password, which is expected to be assigned to the file, and allows reproduction of the file when the input password is coincident with the preset password.

Abstract: A multi-gradation display control method comprises activating selected dots in selected of a plurality of defined submatrices together constituting the entire dot matrix display, e.g., a two dimensional LCD panel, whereby a distribution of dispersion field of dots within defined submatrices are activated to display an image in multi-gradations. A defined dot submatrix has a predetermined distribution of individual activated or unactivated dots in a single frame to form a predefined gradation pattern. The predetermined distribution of dots is changed in succeeding frames of the entire dot matrix so that the dot positions activated or unactivated in a succeeding frame are not the same dot positions activated or unactivated in a previous frame. Preferably, the dot position activated in any given frame of a defined n dots by n dots submatrix are not adjacent to dot positions activated in a previous frame and are not adjacent to dot positions to be activated in a succeeding frame.