US 12,279,079 B2
Projection display method and electronic device
Bihai Wang, Shenzhen (CN); Pengcheng Nie, Shenzhen (CN); Licheng Song, Hangzhou (CN); and Xiaolei Liu, Hangzhou (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Appl. No. 17/625,048
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
PCT Filed Jul. 3, 2020, PCT No. PCT/CN2020/100038
§ 371(c)(1), (2) Date Jan. 5, 2022,
PCT Pub. No. WO2021/004381, PCT Pub. Date Jan. 14, 2021.
Claims priority of application No. 201910606519.7 (CN), filed on Jul. 5, 2019.
Prior Publication US 2022/0295027 A1, Sep. 15, 2022
Int. Cl. H04N 9/31 (2006.01); G06F 3/14 (2006.01); G09G 3/00 (2006.01); G09G 5/14 (2006.01); H04N 21/2662 (2011.01); H04N 21/41 (2011.01); H04N 21/414 (2011.01); H04N 21/431 (2011.01); H04N 21/436 (2011.01); H04N 21/4402 (2011.01); H04N 21/4408 (2011.01)
CPC H04N 9/3188 (2013.01) [G06F 3/14 (2013.01); G09G 3/001 (2013.01); G09G 5/14 (2013.01); H04N 21/2662 (2013.01); H04N 21/4122 (2013.01); H04N 21/41407 (2013.01); H04N 21/4312 (2013.01); H04N 21/436 (2013.01); H04N 21/440263 (2013.01); H04N 21/440281 (2013.01); H04N 21/4408 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A projection display method, comprising:
sending, by a source device, a projection instruction to a destination device, wherein the projection instruction instructs the destination device to project a display interface of the source device onto a display of the destination device;
receiving, by the source device, a first broadcast sent by the destination device, wherein the first broadcast comprises a quantity N of source devices that need to perform projection onto the destination device for display and a reference threshold of a first projection parameter for projection by each of the N source devices, wherein N is an integer greater than or equal to two, and wherein the reference threshold indicates a maximum value for the first projection parameter supported by the destination device;
negotiating, by the source device, a value for the first projection parameter with the destination device based on the quantity N, the reference threshold, and a capability of the source device, wherein the first projection parameter comprises an encoding compression rate and a transmission bit rate; and
sending, by the source device, first display data of the display interface to the destination device based on the negotiated value for the first projection parameter.