US 12,298,655 B2
Projection system and projection method
Chia-Chien Wu, Hsin-Chu (TW); Kun-Chen Hsu, Hsin-Chu (TW); and Shih Kang Lin, Hsin-Chu (TW)
Assigned to Coretronic Corporation, Hsin-Chu (TW)
Filed by Coretronic Corporation, Hsin-Chu (TW)
Filed on Oct. 8, 2021, as Appl. No. 17/496,768.
Claims priority of provisional application 63/093,795, filed on Oct. 20, 2020.
Claims priority of application No. 202110593656.9 (CN), filed on May 28, 2021.
Prior Publication US 2022/0121098 A1, Apr. 21, 2022
Int. Cl. G03B 31/00 (2021.01); A61B 5/00 (2006.01); A61M 21/02 (2006.01); G03B 21/14 (2006.01); G06F 3/16 (2006.01); A61M 21/00 (2006.01); G06F 3/01 (2006.01); G08B 21/02 (2006.01)
CPC G03B 31/00 (2013.01) [A61B 5/4809 (2013.01); A61M 21/02 (2013.01); G03B 21/14 (2013.01); G06F 3/165 (2013.01); A61B 2503/12 (2013.01); A61M 2021/0027 (2013.01); A61M 2021/005 (2013.01); G06F 3/011 (2013.01); G08B 21/02 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A projection system, wherein the projection system comprises a projection device,
the projection device comprises a projection module, a controller, and an audio player, wherein
the projection module comprises a fan;
the controller is coupled to the projection module; and
the audio player is coupled to the controller,
wherein when the controller executes a prepare-for-sleep mode, the controller is configured to:
operate the projection module to dim a projection beam or to project a predetermined projection image;
increase a speed of the fan from a first speed to a second speed so as to increase a fan noise of the fan and continuously provide the fan noise for preparing for sleep; and
operate the audio player to play a predetermined sound.