# US 2021/0344894 A1 · Rotating display > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0344894 A1 - Document ID: US20210344894A1 - Status: Published application - Kind: A1 - Application number: 17/242,607 - Filed: 2021-04-28 - Published: 2021-11-04 - Earliest claimed: 2020-04-29 - Assignees: Design on Impulse Limited - Applicants: Design on Impulse Limited - Inventors: Doug Stokes - Web page: https://patentgrep.com/patent/US20210344894A1 ## CPC - G09G 3/003: {to produce spatial visual effects} - G09G 3/005: {forming an image using a quickly moving array of imaging elements, causing the human eye to perceive an image which has a larger resolution than the array, e.g. an image on a cylinder formed by a rotating line of LEDs parallel to the axis of rotation} - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - H04N 13/393: the volume being generated by a moving, e.g. vibrating or rotating, surface - G09G 2310/0224: Details of interlacing - G09G 2310/0297: Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns - G09G 2350/00: Solving problems of bandwidth in display systems - G09G 2352/00: Parallel handling of streams of display data - G09G 2360/18: Use of a frame buffer in a display terminal, inclusive of the display panel - G09G 2370/10: Use of a protocol of communication by packets in interfaces along the display data pipeline - 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) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A rotating display, for creating a three-dimensional image, that includes a display panel configured to rotate about an axis and comprising a plurality of groups of light emitting elements, with each element being individually controllable and configured to display a plurality of pixels of the image, a processor to receive pixel data for the display panel and divide the data into a plurality of pixel data lines, each line comprising pixel data for only one of the groups of light emitting elements, a buffer to receive one or more of the data lines, for each group of light emitting elements, and a demultiplexer configured to receive a pixel data line and provide pixel data to each light emitting element according to a refresh rate of the display panel. The display panel is configured to rotate about the axis at a rate commensurate with the refresh rate of the display panel. ## Claims ### Claim 1 A rotating display for creating a three-dimensional image, the rotating display comprising: a display panel configured to rotate about an axis, the display panel comprising a plurality of groups of light emitting elements, each light emitting element being individually controllable and configured to display a plurality of pixels of the three-dimensional image; a processor configured to receive pixel data for the display panel and divide the pixel data into a plurality of pixel data lines, each pixel data line comprising pixel data for only one of the groups of light emitting elements; a buffer configured to receive one or more of the data lines; for each group of light emitting elements: a demultiplexer configured to receive a pixel data line and provide pixel data to each light emitting element of the group according to a refresh rate of the display panel; and wherein the display panel is configured to rotate about the axis at a rate commensurate with the refresh rate of the display panel. ### Claim 2 (depends on 1) The rotating display as claimed in claim 1, wherein the pixel data received by the processor comprises a two-dimensional video frame to be displayed on the display panel. ### Claim 3 (depends on 1) The rotating display as claimed in claim 1, wherein the pixel data received by the processor comprises a plurality of channels for each pixel and the data for each pixel being arranged sequentially such that data for all of the channels for a given pixel precedes the data for all of the channels for the next pixel in the sequence. ### Claim 4 (depends on 1) The rotating display as claimed in claim 1, wherein each group of light emitting elements comprises a plurality of subsets of light emitting elements, each subset consisting of a plurality of light emitting elements wired in series. ### Claim 5 (depends on 1) The rotating display as claimed in claim 1, wherein the processor is further configured to interlace the pixel data corresponding to two or more pixels on one or more of the data lines. ### Claim 6 (depends on 1) The rotating display as claimed in claim 1, wherein the processor is further configured to output supplementary data on a supplementary data line, wherein the supplementary data comprises one or more of: status data indicating the status of the processor, and an error checking code. ### Claim 7 (depends on 1) The rotating display as claimed in claim 1, wherein the brightness of each light emitting element is controlled in dependence on its distance from the axis of rotation of the display panel. ### Claim 8 (depends on 7) The rotating display as claimed in claim 7, wherein the brightness of each light emitting element increases commensurate with its distance from the axis of rotation of the display panel. ### Claim 9 (depends on 7) The rotating display as claimed in claim 7, wherein the brightness of the light emitting elements is controlled by one or more of: the display panel being configured to vary the current provided to the light emitting elements, and the processor being configured to scale the pixel data. ### Claim 10 (depends on 1) The rotating display as claimed in claim 1, wherein the processor is configured to receive pixel data encoded according to a differential signalling protocol. ### Claim 11 (depends on 1) The rotating display as claimed in claim 1, wherein the display panel is configured to rotate about the axis such that the rate of rotation of the display panel is a factor of the refresh rate of the display panel. ### Claim 12 (depends on 1) The rotating display as claimed in claim 1, wherein each demultiplexer comprises a serial-in parallel-out shift register. ### Claim 13 (depends on 12) The rotating display as claimed in claim 12, wherein each group of light emitting elements comprises a plurality of subsets of light emitting elements, each subset consisting of a plurality of light emitting elements wired in series wherein each parallel output of each demultiplexer is configured to provide data to only one of the subsets of light emitting elements. ### Claim 14 (depends on 1) The rotating display as claimed in claim 1, wherein one or both of the pixel data received by the processor and the pixel data on the data lines is uncompressed. ### Claim 15 (depends on 1) The rotating display as claimed in claim 1, wherein the processor is configured to output the data lines at a rate commensurate with the rate of rotation of the display panel about the axis. ### Claim 16 (depends on 1) The rotating display as claimed in claim 1, wherein the buffer comprises dynamic random access memory. ### Claim 17 (depends on 1) The rotating display as claimed in claim 1, wherein the light emitting elements are arranged in rows that are not parallel with an intended point of view for all angular positions of the display panel about the axis. ### Claim 18 (depends on 1) The rotating display as claimed in claim 1, wherein the light emitting elements may be matrix addressed. ### Claim 19 (depends on 1) The rotating display as claimed in claim 1, wherein the processor is fixed to the display panel. ### Claim 20 A method of creating a three-dimensional image using a rotating display, the rotating display comprising a display panel configured to rotate about an axis, the display panel comprising a plurality of groups of light emitting elements, each light emitting element being individually controllable and configured to display a plurality of pixels of the three-dimensional image, a processor, one or more buffers, and for each group of light emitting elements, a demultiplexer, the method comprising: receiving pixel data at the processor for the display panel and dividing the pixel data into a plurality of pixel data lines, each pixel data line comprising pixel data for only one of the groups of light emitting elements; buffering the pixel data lines at the one or more buffers; for each group of light emitting elements: receiving the respective pixel data line from the one or more buffers at a corresponding demultiplexer and providing pixel data to each light emitting element of the group according to a refresh rate of the display panel; and rotating the display panel about the axis at a rate commensurate with the refresh rate of the display panel.