INDICATOR, IMAGE PROJECTION SYSTEM, AND METHOD FOR CONTROLLING INDICATOR

• Main Author: AKIYAMA MASANORI
• Format: Patent
• Language: English; Japanese
• Published: 03.10.2019
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; CALCULATING; CINEMATOGRAPHY; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC DIGITAL DATA PROCESSING; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; ELECTROGRAPHY; HOLOGRAPHY; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

To provide an indicator that can reduce consumption of a battery to extend an available time, an image projection system, and a method for controlling the indicator.SOLUTION: A light-emitting pen 3 performing indication on an image projected from a projector comprises: a battery 37; a light-emitting unit 35 that intermittently emits light with a power supplied from the battery 37; a battery remaining amount detection unit 38 that detects the remaining amount of the battery 37; and a control unit 30 that, when the remaining amount of the battery 37 detected by the battery remaining amount detection unit 38 is equal to or less than a predetermined threshold, changes a light-emission mode of the light-emitting unit 35 so that the quantity of light emitted from the light-emitting unit 35 is reduced.SELECTED DRAWING: Figure 4 【課題】電池の消耗を抑制し、使用できる時間を延ばすことが可能な指示体、画像投写システム及び指示体の制御方法を提供する。【解決手段】プロジェクターから投写される画像上で指示を行う発光ペン３は、電池３７と、電池３７から供給される電力によって断続的に発光を行う発光部３５と、電池３７の残量を検出する電池残量検出部３８と、電池残量検出部３８により検出された電池３７の残量が所定の閾値以下の場合に、発光部３５の発光量が低減するように発光部３５の発光モードを変更する制御部３０と、を備える。【選択図】図４