Abstract: Music data is easily and positively produced from a melody the user imagined to himself/herself, without the need of musical expertise. Accepted are an input of a melody voice the user is singing to himself/herself and a key depression corresponding to a rhythm of the melody voice to be inputted. Depending upon a timing of the accepted key depression, voice pitch and note value are extracted from the melody voice. The produced music data is format-changed into a file for outputting at a terminal unit, and then sent toward the terminal unit.

Abstract: A displaying apparatus includes a display screen, and a light-shielding grating member having a plurality of light-shielding plates which are assembled in a matrix form in vertical and horizontal directions, the light-shielding grating member being disposed in front of the display screen. In the displaying apparatus, the respective light-shielding plates in the vertical and horizontal directions are inclined in directions to pass a predetermined visual point range when the respective light-shielding plates are virtually extended frontward, or the light-shielding grating member is inclined frontward and backward with respect to the display screen within a predetermined angle range. According to such a structure, external light obliquely injected into the display screen from the left, right, upper and lower sides can be shielded so as to improve a display contrast and visibility to prevent difficulties in seeing the image.

Abstract: An illuminant display device having a wired substrate with a large number of LEDs mounted thereon, and a case frame member for accommodating the wired substrate. An illuminant dot being composed of a plurality of the LEDs and a plurality of the illuminant dots being aligned in a horizontal direction in each case frame member. A plurality of the illuminant display devices are arranged in a matrix form to form a large-scale display unit. Alignment of the illuminant display devices in a horizontal direction is easily and accurately maintained.

Abstract: A dot matrix type luminous display in which flaws such as strains are substantially eliminated during the manufacturing process. A display board bearing light-emitting elements is covered by a flexible member having through-holes formed at locations corresponding to the light-emitting elements. These through-holes, which are filled with a heat-resistant, translucent resin, are offset from through-holes formed in the display board, which are used to provide electrical connections to the light-emitting elements.