Camera with high-quality still capture during continuous video capture
View Patent ↗A method for processing a source frame is disclosed. The method generally includes the steps of (A) generating an intermediate frame by digitally processing the source frame, wherein the intermediate frame has an intermediate resolution and has an intermediate color space, (B) generating a video frame by down-sampling the intermediate frame, wherein the video frame has a video resolution lower than the intermediate resolution and has a video color space different than the intermediate color space, (C) generating a video stream by compressing the video frame with a video encoding technique and (D) generating a still picture by formatting the intermediate frame with a picture formatting technique, wherein (i) the still picture has the intermediate resolution and (ii) generating the still picture occurs substantially simultaneously with generating the video stream.
1. A method for processing a plurality of source frames, comprising the steps of:
(A) generating a plurality of intermediate frames by digitally processing said source frames, wherein said intermediate frames have an intermediate resolution and an intermediate color space;
(B) generating a plurality of video frames by down-sampling all of said intermediate frames with a processor in a first state of operation, wherein said video frames have a video resolution lower than said intermediate resolution and have a video color space different than said intermediate color space;
(C) transitioning said processor from said first state to a second state, wherein said processor in said second state captures a particular frame of said intermediate frames prior to said particular frame being down-sampled;
(D) transitioning said processor from said second state to said first state after finishing said capture of said particular frame if more of said intermediate frames are available to down-sample; and
(E) transitioning said processor from said first state to a third state during a blanking period between said video frames, wherein (i) said processor in said third state generates a still picture by formatting said particular frame with a picture formatting technique and (ii) said still picture has said intermediate resolution and a still picture color space.
2. The method according to claim 1 , further comprising the step of:
transitioning said processor from said third state to said first state if (i) said blanking period of said video frames ends before generating said still frame is complete and (ii) more of said intermediate frames are available to process.
3. The method according to claim 1 , further comprising the step of:
transitioning said processor from said third state to a fourth state if (i) generating said still frame is complete and (ii) no more of said intermediate frames are available to process.
4. The method according to claim 1 , further comprising the step of:
transitioning said processor from said second state directly to said third state if (i) capture of said particular frame is complete and (ii) no more of said intermediate frames are available to process.
5. The method according to claim 1 , further comprising the step of:
transitioning said processor from said first state to said second state if (i) a last of said video frames has been generated and (ii) generating said still frame is not complete.