# US 11,849,250 B2 · Signal processing device and video display device comprising same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,849,250 B2 - Document ID: US11849250B2 - Status: Granted - Kind: B2 - Application number: 17/938,107 - Filed: 2022-10-05 - Published: 2023-02-09 - Granted: 2023-12-19 - Earliest claimed: 2018-10-23 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Saem Park; Seokpan Kang; Yongtaek Gong; Sangchurl Nam; Yeonoh Nam; Jeonghyu Yang; Kyungmee Lee; Myongyoung Lee; Seoksoo Lee; Wonwoo Lee; Seungjong Choi; Jongwoo Ha - Web page: https://patentgrep.com/patent/US11849250B2 ## CPC - 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} - H04N 7/0132: {the field or frame frequency of the incoming video signal being multiplied by a positive integer, e.g. for flicker reduction} - G06N 3/0464: Convolutional networks [CNN, ConvNet] - G06N 3/08: Learning methods - G06T 5/70: Denoising; Smoothing - G06T 7/0002: {Inspection of images, e.g. flaw detection} - G09G 5/005: {Adapting incoming signals to the display format of the display terminal} - H04N 7/0117: {involving conversion of the spatial resolution of the incoming video signal (for graphics images G09G2340/0407)} - H04N 21/44008: {involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream (arrangements characterised by components specially adapted for monitoring, identification or recognition of video in broadcast systems H04H60/59)} - H04N 21/4402: involving reformatting operations of video signals for household redistribution, storage or real-time display {(details of conversion of video standards at pixel level H04N7/01; video transcoding H04N19/40; adapting incoming signals to the display format of the display terminal G09G5/005; media handling at the source in data packet switching networks H04L65/764)} - H04N 21/440254: {by altering signal-to-noise parameters, e.g. requantization} - H04N 21/440263: {by altering the spatial resolution, e.g. for displaying on a connected PDA} - H04N 21/44209: {Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network (arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896)} - H04N 21/466: Learning process for intelligent management, e.g. learning user preferences for recommending movies {(services using the results of monitoring in broadcast systems H04H60/61)} - H04N 21/647: Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless {(real-time session protocols H04L65/1101)} - G06N 3/045: Combinations of networks - G06T 2207/10016: Video; Image sequence - G06T 2207/30168: Image quality inspection - G09G 2310/066: Waveforms comprising a gently increasing or decreasing portion, e.g. ramp - G09G 2320/02: Improving the quality of display appearance - G09G 2320/0247: Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes - G09G 2340/0407: Resolution change, inclusive of the use of different resolutions for different screen areas - G09G 2360/02: Graphics controller able to handle multiple formats, e.g. input or output formats - G09G 2360/16: Calculation or use of calculated indices related to luminance levels in display data - G09G 2370/04: Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller - H04N 5/46: for receiving on more than one standard at will (deflecting circuits of multi-standard receivers H04N3/27) - 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 - G06N: COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL ## Abstract Disclosed are a signal processing device and an image display apparatus including the same. The signal processing device of an embodiment of the present disclosure includes: a quality calculator configured to calculate a source quality of an image signal received from an external settop box or a network; an image quality setter configured to set an image quality of the image signal based on the calculated source quality; and an image quality processor configured to perform image quality processing on the image signal based on the set image quality, wherein in response to the source quality of the received image signal being changed at a first time point, the image quality setter changes an image quality setting sequentially from a first setting to a second setting; and based on the image quality setting, the image quality processor performs image quality processing. Accordingly, flicker may be reduced when an image quality is changed due to a change in the source quality of the received image signal. ## Claims ### Claim 1 A signal processing device comprising: a quality calculator configured to calculate a source quality of an image signal received from an external settop box or a network and transmit the calculated source quality of the image signal, wherein the calculated source quality of the image signal includes a calculated resolution and a calculated compression level of the image signal; an image quality setter configured to set an image quality of the image signal based on the calculated source quality; and an image quality processor configured to increase an enhancement intensity of the image signal, based on the calculated compression level decreasing or based on the calculated resolution of the image signal increasing. ### Claim 2 (depends on 1) The signal processing device of claim 1, wherein the image quality setter is further configured to: change, during image playback, the set image quality from a first image quality setting to a second image quality setting, in response to the source quality of the received image signal being changed at a first time point. ### Claim 3 (depends on 1) The signal processing device of claim 1, wherein the image quality setter is further configured to: change, while the image signal is received from the settop box, the set image quality from a first image quality setting to a second image quality setting in response to the source quality of the received image signal being changed at a first time point by a channel change or an input change. ### Claim 4 (depends on 1) The signal processing device of claim 1, wherein the quality calculator is further configured to calculate a noise level of the received image signal. ### Claim 5 (depends on 4) The signal processing device of claim 4, wherein the quality calculator is further configured to: extract a first region and a second region from the image signal; calculate the resolution of the image signal based on the first region; and calculate the noise level of the image signal based on the second region. ### Claim 6 (depends on 5) The signal processing device of claim 5, wherein the quality calculator is further configured to: extract a region, having most edge components in the image signal, as the first region; and extract a region having fewest edge components in the image signal, as the second region. ### Claim 7 (depends on 4) The signal processing device of claim 4, wherein the quality calculator is further configured to increase a noise reduction intensity of the image signal as the calculated noise level increases. ### Claim 8 (depends on 1) The signal processing device of claim 1, wherein the quality calculator is further configured to calculate the resolution and a noise level of the received image signal using a Deep Neural Network (DNN). ### Claim 9 (depends on 1) The signal processing device of claim 1, wherein the quality calculator is further configured to: update a parameter for a Deep Neural Network (DNN) received from a server; and calculate the resolution and the compression level of the received image signal based on the updated parameter. ### Claim 10 (depends on 1) The signal processing device of claim 1, wherein the quality calculator is further configured to: calculate the compression level based on training data obtained by reducing a compression bit rate. ### Claim 11 (depends on 1) The signal processing device of claim 1, the image quality processor is further configured to: decrease an enhancement intensity of the image signal as the calculated compression level increases. ### Claim 12 (depends on 1) The signal processing device of claim 1, the image quality processor is further configured to: decrease an enhancement intensity of the image signal as the resolution of the image signal decreases. ### Claim 13 (depends on 1) The signal processing device of claim 1, the image quality processor is further configured to: increase a blurring intensity of the image signal as the calculated compression level increases. ### Claim 14 (depends on 1) The signal processing device of claim 1, the image quality processor is further configured to: decrease a size of a filter for filtering the image signal as the resolution of the image signal increases. ### Claim 15 (depends on 1) The signal processing device of claim 1, wherein the image quality processor is further configured to: downscale the image signal based on the resolution of the image signal; perform image quality processing on the downscaled image signal; upscale the image signal on which the image quality processing is performed; and outputs the upscaled image signal. ### Claim 16 An image display apparatus comprising: an image receiver configured to receive an image signal from an external settop box or a network; a display: and a processor configured to: receive the image signal from the image receiver; and calculate a source quality of the image signal and transmit the calculated source quality of the image signal, wherein the calculated source quality of the image signal includes a calculated resolution and a calculated compression level of the received image signal; set an image quality of the image signal based on the calculated source quality; increase an enhancement intensity of the image signal, based on the calculated compression level decreasing or based on the calculated resolution of the image signal increasing; and cause the display to display an image based on the image signal. ### Claim 17 (depends on 16) The image display apparatus of claim 16, wherein the processor is further configured to: cause the display to display: a first object indicating the calculated source quality of the received image signal; and a second object indicating the set image quality. ### Claim 18 (depends on 17) The image display apparatus of claim 17, wherein the processor is further configured to: cause the display to display the first object and the second object for a defined period of time, in response to the source quality of the received image signal being changed. ### Claim 19 (depends on 16) The image display apparatus of claim 16, wherein the processor is further configured to: change, while the image signal is received from the settop box, the set image quality from a first image quality setting to a second image quality setting in response to the source quality of the received image signal being changed at a first time point by a channel change or an input change. ### Claim 20 (depends on 16) The image display apparatus of claim 16, wherein the processor is further configured to: calculate a noise level of the received image signal using a Deep Neural Network (DNN).