US 12,261,993 B2
Stereoscopic display system and control method thereof
Chun-Hsiung Chuang, Hsin-Chu (TW); Yen-Mo Yu, Hsin-Chu (TW); and Wen-Chen Chen, Hsin-Chu (TW)
Assigned to Coretronic Corporation, Hsin-Chu (TW)
Filed by Coretronic Corporation, Hsin-Chu (TW)
Filed on Sep. 16, 2022, as Appl. No. 17/946,059.
Claims priority of application No. 202111112258.7 (CN), filed on Sep. 23, 2021.
Prior Publication US 2023/0086801 A1, Mar. 23, 2023
Int. Cl. H04N 13/363 (2018.01); H04N 13/324 (2018.01); H04N 13/344 (2018.01); H04N 13/398 (2018.01)
CPC H04N 13/363 (2018.05) [H04N 13/324 (2018.05); H04N 13/344 (2018.05); H04N 13/398 (2018.05)] 13 Claims
OG exemplary drawing
 
1. A stereoscopic display system, comprising:
stereoscopic glasses; and
a projection device, configured to receive an image input signal and output a left-eye image and a right-eye image included in the image input signal to the stereoscopic glasses, the image input signal having an image input frequency, the projection apparatus comprising:
a rotation device, disposed on a transmission path of a light beam and converting the light beam to a color beam; and
a control circuit, coupled to the rotation device to control the rotation device to rotate at a rate 2n times the image input frequency, so that the rotation device respectively completes n rotations during a period in which the stereoscopic glasses receive the left-eye image and a period in which the stereoscopic glasses receive the right-eye image, wherein n is an integer greater than 1,
wherein when the image input frequency of the image input signal is not equal to a predetermined value, the control circuit converts the image input frequency to the predetermined value and then controls the rotation device to rotate at the rate 2n times the predetermined value.