TH98513B - Interactive multi-point surface display system - Google Patents

Abstract

DC60 (03/05/54) This multi-point interactive display system consists of a main table structure, a clear acrylic tabletop with a tracing paper screen, and a tabletop with two ventilation holes for cooling fans. The side of the table has slots for various memory cards. Inside, a touch detection system uses a modified webcam capable of infrared detection, mounted on the inner wall of the table near the video projector. This projector projects images onto the screen on the tabletop, and a mirror is installed on the bottom of the table to increase the projection distance. This mirror is adjustable. An infrared illumination system is also included to aid in touch detection. This consists of a panel with adjustable tilt infrared LED circuits and modular infrared LED circuits. Each module contains 54 infrared LEDs, arranged in series of three and in parallel. The tabletop, made of clear acrylic sheet, has a tracing paper screen as a viewing surface, while the bottom of the table has two ventilation holes for installing a cooling fan. The side of the table has slots for various types of memory cards. Inside, a touch detection system is installed, utilizing a modified webcam capable of infrared detection. This webcam is mounted on the inner wall of the table near the video projector, which projects images onto the screen on the tabletop. A mirror is installed on the bottom of the table to increase the projection distance; this mirror is adjustable in angle. The system also includes an infrared illumination system to aid in touch detection. This consists of a panel with adjustable tilt infrared LED circuits and modular infrared LED circuits. Each module contains 54 infrared LEDs connected in series, in sets of three, with each set connected in parallel.

Claims (3)

1. A multi-point interactive surface display system consisting of an outer structure (1) with a rectangular shape and four side walls angled to the vertical, with a rectangular opening the same shape as the front of the table (2) pushed inward from the front surface of the table, as well as the rectangular openings on the left and right sides (3) for diffusing 28-inch (4) and 12-inch (5) (6) fluorescent lights mounted on top of the box on the front and sides, respectively. Inside the back wall (7) is a horizontal, non-perforated rectangular opening (8) containing five coin magnets, two pairs and one single. The two pairs of coin magnets will attract the other two pairs of coin magnets mounted on the keyboard to hold the keyboard in place when not in use, and the single coin magnet will attract the third coin magnet mounted on the mouse to hold the mouse in place when not in use. When not in use, the lower left rear corner of the outer structure has a rectangular cutout (9) for mounting various circuit breaker and connector circuit boards (10), which include circuit breakers (11), female filtered power connectors (12), female DB9 connectors (13), and female RJ45 connectors (14). On the left side of the main structure, there is a rectangular slot (15) for inserting various memory cards and USB ports, and nearby is a power switch (16) for turning the system on and off. On the base plate of the main structure (17), there are two circular holes (18) and two exhaust fans the same size as the two circular holes are installed on the underside of the base plate. These two exhaust fans will draw hot air from inside the system to the outside, where outside air will replace the air inside the system through small vents along the length of the table top edge (19). These small vents are created by the lifting of the table top by small transparent rubber beads that support the edge of the table, creating small vents along the entire edge of the table. The tabletop is made of a clear acrylic sheet (20) placed on the edge of the table structure with small clear rubber beads attached along the edge to create gaps and square acrylic pieces attached at the four corners of the tabletop, sliding inward to prevent the tabletop from sliding. 2. A multi-point interactive surface display system, according to claim 1, which is characterized by a fingerprint and object detection system and a display system consisting of a modified webcam (21) capable of detecting infrared radiation by removing the infrared filter and replacing it with a negative film, mounted on the inner wall of the table near the projection lens of the video projector (22). A video projector is used to project the data onto the table surface using a tracing paper screen (23), mounted on an adjustable base (24) by adjusting the two pivot points (25) on a support axis (26) mounted on the inner wall of the table. A mirror (27) is used to reflect the image projected from the video projector (22) onto the screen (23) mounted on the table surface to reduce the distance for a larger image, by adjusting the angle by adjusting the two pivot points (28) of the mirror support axis (29) mounted on the base of the main structure. 3. Multi-point interactive surface display system, according to claim 1, which is characterized by an infrared illumination system consisting of three infrared LED (30) mounting panels of two sizes: a long one mounted along the length of the main structure and a short one mounted along the width of the main structure. The infrared LED mounting panels are adjustable in angle with a pivot base (31) for mounting on the inner wall of the table and have a similar base for supporting the infrared LED mounting panels (32). The side walls of the infrared LED mounting panels (33) are grooved the thickness of the infrared LEDs for sliding mounting. The infrared LEDs are made up of sub-modules (34), each module containing 54 infrared LEDs connected in series of 3 glass tubes each in parallel.