# US 2018/0025686 A1 · Method and device for emulating continuously varying frame rates > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0025686 A1 - Document ID: US20180025686A1 - Status: Published application - Kind: A1 - Application number: 15/550,222 - Filed: 2016-02-11 - Published: 2018-01-25 - Earliest claimed: 2015-02-11 - Assignees: Max-Panck-Gesellschaft Zur FöRderung Der Wissenschaften E.V.; Universitat Des Saarlandes - Applicants: Max-Panck-Gesellschaft Zur FöRderung Der Wissenschaften E.V.; UniversitäT Des Saarlandes - Inventors: Krzysztof TEMPLIN; Karol MYSZKOWSKI; Hans-Peter SEIDEL; Piotr DIDYK - Web page: https://patentgrep.com/patent/US20180025686A1 ## CPC - G09G 3/2092: {Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto (suitable for both CRT and flat panel G09G5/003; specific for a CRT G09G1/165)} - G06T 3/4007: based on interpolation, e.g. bilinear interpolation (image demosaicing G06T3/4015; edge-driven or edge-based scaling G06T3/403) - G09G 3/20: for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} - H03H 17/0621: {with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing} - H03H 17/0685: {the ratio being rational} - H04N 5/262: Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects {; Cameras specially adapted for the electronic generation of special effects} - H04N 5/2625: {for obtaining an image which is composed of images from a temporal image sequence, e.g. for a stroboscopic effect (sequence generated by event triggered capturing H04N7/188)} - H04N 7/0127: {by changing the field or frame frequency of the incoming video signal, e.g. frame rate converter} - H04N 7/0135: {involving interpolation processes (interpolation-based image scaling G06T3/4007; interpolation for video coding H04N19/587, H04N19/59)} - H04N 21/440245: {the reformatting operation being performed only on part of the stream, e.g. a region of the image or a time segment} - H04N 21/440281: {by altering the temporal resolution, e.g. by frame skipping (television signal recording using magnetic recording on tape for reproducing at a rate different from the recording rate H04N5/783)} - H04N 23/73: by influencing the exposure time - G06T 2207/10016: Video; Image sequence - G06T 2207/10144: Varying exposure - G06T 2207/20201: Motion blur correction - G09G 2320/0247: Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes - G09G 2340/0435: Change or adaptation of the frame rate of the video stream - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - H03H: IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS (waveguides, resonators, lines or other devices of the waveguide type H01P) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract The present invention relates to a method and a device for emulating frame rates in video or motion picture. ## Claims ### Claim 1 A method for emulating frame rates in a video, comprising the step of: obtaining a sequence of frames to be displayed at a presentation frame rate to a human viewer, characterized in that the sequence of frames is obtained such that an emulated frame rate of at least a region within a frame of the displayed sequence is perceived to be lower than the presentation frame rate by the human viewer. ### Claim 2 (depends on 1) The method of claim 1, wherein the emulated frame rate can be varied. ### Claim 3 (depends on 2) The method of claim 2, wherein the emulated frame rate can be varied between different regions of a frame and/or between frames. ### Claim 4 (depends on 1) The method of claim 1, wherein the emulated frame rate can be varied continuously. ### Claim 5 (depends on 1) The method of claim 1, wherein a difference between sampling times of some region of consecutive frames varies periodically, ### Claim 6 (depends on 5) The method of claim 5, wherein said difference either equals zero or belongs to a set of at least two, strictly greater than zero, pair-wise different parameters D and within said period all parameters from D are used at least once. ### Claim 7 (depends on 6) The method of claim 6, wherein D contains exactly two parameters, wherein each parameter is used exactly once within said period, and the distance between the two occurrences of parameters from D is equal to half the period length. ### Claim 8 (depends on 7) The method of claim 7, wherein said period has length exactly 2, 4 or 8 frames. ### Claim 9 (depends on 6) The method of claim 6, wherein said difference within said period on average equals the inverse of said presentation frame rate. ### Claim 10 (depends on 1) The method of claim 1, wherein a frame is obtained based on a shutter angle of a camera. ### Claim 11 (depends on 1) The method of claim 1, wherein a frame is obtained by sampling from a sequence of input frames. ### Claim 12 (depends on 1) The method of claim 1, wherein sampling a frame from the sequence of input frames comprises interpolating between two subsequent input frames. ### Claim 13 (depends on 1) The method of claim 1, wherein the frames are obtained by controlling capture times of a video camera. ### Claim 14 (depends on 1) The method of claim 1, wherein the frames are obtained by rendering. ### Claim 15 (depends on 1) The method of claim 1, wherein a frame is obtained based on a displacement parameter (δ). ### Claim 16 (depends on 9) The method of claim 9, wherein the displacement parameter (δ) is set automatically. ### Claim 17 (depends on 9) The method of claim 9, wherein the displacement parameter (δ) is set by a user. ### Claim 18 (depends on 1) The method of claim 1, wherein the veridical frame rate is 48 fps, 60 fps, 96 fps, 120 fps or 144 fps. ### Claim 19 (depends on 1) The method of claim 1, implemented on a computer. ### Claim 20 (depends on 1) The method of claim 1, wherein the sequence of frames corresponds to a film shot. ### Claim 21 (depends on 1) A non-volatile medium, storing a video generated by a method according to claim 1. ### Claim 22 (depends on 1) A computer program product, comprising instructions that, when executed by a computer, implement a method according to claim 1. ### Claim 23 A video camera, wherein a capture time of a frame is controlled in order to obtain a sequence of frames to be displayed at a presentation frame rate to a human viewer, characterized in that the sequence of frames is obtained by controlling the capture time such that an emulated frame rate of at least a region within a frame of the displayed sequence is perceived to be lower than the presentation frame rate by the human viewer.