US 12,131,720 B2
Transmissive display apparatus and image combining method therein
Byung Kuk Seo, Daejeon (KR)
Assigned to ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed on Nov. 21, 2022, as Appl. No. 17/990,996.
Claims priority of application No. 10-2022-0006863 (KR), filed on Jan. 17, 2022.
Prior Publication US 2023/0230561 A1, Jul. 20, 2023
Int. Cl. G09G 5/377 (2006.01); G02B 27/01 (2006.01)
CPC G09G 5/377 (2013.01) [G02B 27/017 (2013.01); G02B 2027/0134 (2013.01); G02B 2027/0138 (2013.01); G09G 2340/12 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A display apparatus, comprising:
a beam splitter configured to split a light incident from a real space scene in front of the display apparatus to transmit a first portion of the incident light from the real space scene and reflects a second portion of the incident light from the real space scene;
an image sensor configured to generate a real space image according to the second portion of the incident light;
a light modulator having a transmittance that is variable for each pixel according to a masking image and configured to pass at least a part of the first portion of the incident light according to the transmittance;
a control and projection image generation unit configured to generate the masking image and a projection image according to the real space image; and
a projection unit configured to receive the projection image, generate a projection image light corresponding to the projection image, and combine the projection image light with the at least a part of the first portion of the incident light transmitting the light modulator,
wherein the control and projection image generation unit selects a target object to be deleted from the real space scene, and generate the masking image based on a target object area associated with the target object so as to cause the light modulator to block a foreground of the real space scene represented by the first portion of the incident light and pass a background of the real space scene.