# US 2014/0198016 A1 · Low-power mode for display > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0198016 A1 - Document ID: US20140198016A1 - Status: Published application - Kind: A1 - Application number: 13/741,531 - Filed: 2013-01-15 - Published: 2014-07-17 - Earliest claimed: 2013-01-15 - Assignees: Sony Mobile Communications Inc. - Applicants: Sony Mobile Communications AB - Inventors: Alexander Hunt; Martin Ek - Web page: https://patentgrep.com/patent/US20140198016A1 ## CPC - G09G 3/36: using liquid crystals - G09G 3/3406: {Control of illumination source (illumination devices structurally associated with liquid crystal cells G02F1/1336)} - G09G 2300/023: Display panel composed of stacked panels - G09G 2300/0456: with a reflective area and a transmissive area combined in one pixel, such as in transflectance pixels - G09G 2310/08: Details of timing specific for flat panels, other than clock recovery - G09G 2330/021: Power management, e.g. power saving - G09G 2340/0435: Change or adaptation of the frame rate of the video stream - G09G 2360/144: the light being ambient light - 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) ## Abstract The invention is directed to systems, methods and computer program products for a low-power mode (or low-transmission state) associated with a display. An exemplary system comprises: a first display positioned on top of a second display, the first display at least partially covering the second display; the second display; a processor configured to: determine whether the first display is in low-transmission state or a high-transmission state; in response to determining the first display is in a low-transmission state, enable display of an image on the first display. Additionally, the system also updates an image on the display based on determining a frequency of updating an image on the display in the low-transmission state, and based on determining an amount of data to be updated on the display in the low-transmission state. ## Claims ### Claim 1 A system for enabling display of an image, the system comprising: a first display positioned on top of a second display, the first display at least partially covering the second display; the second display; a processor configured to: determine whether the first display is in a low-transmission state or a high-transmission state; and in response to determining the first display is in a low-transmission state, enable display of an image on the first display. ### Claim 2 (depends on 1) The system of claim 1, wherein the first display comprises a diffuse display. ### Claim 3 (depends on 1) The system of claim 1, wherein the second display comprises an emissive display. ### Claim 4 (depends on 1) The system of claim 1, wherein the first display is substantially clear when the first display is in a high-transmission state, and wherein the image is not visible when the first display is in the high-transmission state. ### Claim 5 (depends on 1) The system of claim 1, wherein the image comprises at least one of a time or date indicator, a weather indicator, a calendar, a photo, a logo, an event indicator, a moving image, or text. ### Claim 6 (depends on 1) The system of claim 1, wherein the image comprises at least one color. ### Claim 7 (depends on 1) The system of claim 1, wherein the image is substantially joint-free. ### Claim 8 (depends on 1) The system of claim 1, wherein at least one of the first display or the second display is flexible about at least one axis. ### Claim 9 (depends on 1) The system of claim 1, wherein the first display functions as an electronically controlled optical filter. ### Claim 10 (depends on 1) The system of claim 1, wherein the system comprises a mobile device. ### Claim 11 A system for updating display of an image, the system comprising: a display comprising at least one pixel, the pixel comprising at least one sub-pixel; a memory, the memory being associated with at least one memory bit; a processor configured to: determine whether the system is in a high-power mode or a low-power mode; in response to determining the system is in a low-power mode, determine a frequency of updating an image on the display in the low-power mode, and determine an amount of data to be updated on the display in the low-power mode; and update the image based on the determined frequency and the determined amount of data. ### Claim 12 (depends on 11) The system of claim 11, wherein the memory comprises read-access memory. ### Claim 13 (depends on 11) The system of claim 11, wherein the low-power mode is associated with an amount of power less than a predetermined power level. ### Claim 14 (depends on 11) The system of claim 11, wherein the display is monochromatic in the low-power mode. ### Claim 15 (depends on 11) The system of claim 11, wherein the at least one sub-pixel comprises at least one of a red sub-pixel, a green sub-pixel, a blue sub-pixel, or a white sub-pixel, and wherein the at least one memory bit is associated with the at least one sub-pixel. ### Claim 16 (depends on 11) The system of claim 11, wherein the amount of data to be updated on the display in the low-power mode is based on a number of memory bits associated with the at least one sub-pixel. ### Claim 17 (depends on 11) The system of claim 11, wherein a backlight associated with the system is not activated in the low-power mode. ### Claim 18 (depends on 11) The system of claim 11, wherein the display can be switched from a high-power mode to a low-power mode based on a trigger event. ### Claim 19 (depends on 11) The system of claim 11, wherein the memory is integrated into a display driver or a backplane associated with the system. ### Claim 20 (depends on 11) The system of claim 11, wherein the system comprises a mobile device.