Color calibration of color image rendering devices, such as large color displays, which operate by either projection or emission of images, utilize internal color measurement instrument or external color measurement modules locatable on a wall or speaker. A dual use camera is provided for a portable or laptop computer, or a cellular phone, handset, personal digital assistant or other handheld device with a digital camera, in which one of the camera or a display is movable with respect to the other to enable the camera in a first mode to capture images of the display for enabling calibration of the display, and in a second mode for capturing image other than of the display. The displays may represent rendering devices for enabling virtual proofing in a network, or may be part of stand-alone systems and apparatuses for color calibration. Improved calibration is also provided for sensing and correcting for non-uniformities of rendering devices, such as color displays, printer, presses, or other color image rendering device.

Provided is an electronic device including: a communication unit; a tuner configured to receive a channel signal of a broadcast channel by tuning to a frequency of the broadcast channel included in the broadcasting signal; and a controller configured to acquire data regarding the broadcast channel based on the channel signal and transmit the data to a server through the communication unit, the data including at least one of signal information indicating properties of the channel signal, and service information regarding the broadcast channel.

An apparatus that automatically monitors a display device includes a photo sensor configured to receive light from a display screen of the display device. The photo sensor provides signals representing detected light levels to a processor. The processor is coupled to the display device and is configured to cause the display device to present a test sequence including a plurality of images on the display screen. The processor is configured to capture data from the photo sensor during the presentation of the test sequence and to compare the captured data to an expected sequence corresponding to the test sequence displayed by a well-functioning display. The processor is further configured to report any mismatch between the captured data and the expected sequence as a possible malfunction of the display device.

The present application relates to set top boxes and relates to the inclusion of a diagnostic function in the set top box which may be activated remotely or respond internally to the detection of faults or changes in status. The diagnostic function may emulate key presses from an infrared remote control to perform a test.

A method for identifying variations introduced in signals transmitted over a signal path, the method comprising sending, over the signal path, one or more test patterns with functional features to a test pattern analyser, wherein said functional features are for determining aspects of variations introduced in the one or more test patterns during transmission over the signal path; and including a data pattern in at least one of the test patterns prior to said sending, said data pattern comprising meta-data on functional features of the at least one test pattern.

Methods are provided for detecting correct or incorrect operation of a display panel (e.g. LED or OLED) during display of a video signal, the display panel being associable with a controller system. The method comprises: adding, by the controller system, a dynamic pattern into the video signal for inducing the display panel to display the video signal with the added dynamic pattern substantially imperceptible to human vision, and to provoke an expected power consumption evolution during the display of the video signal with the added dynamic pattern; measuring, by the controller system, power consumed by the display panel during the display of the video signal with the added dynamic pattern to determine an actual power consumption evolution; and determining, by the controller system, whether the actual power consumption evolution corresponds to the expected power consumption evolution. Controller systems and computer programs suitable for performing such detection methods are also provided.

Color calibration of color image rendering devices, such as large color displays, which operate by either projection or emission of images, utilize internal color measurement instrument or external color measurement modules locatable on a wall or speaker. A dual use camera is provided for a portable or laptop computer, or a cellular phone, handset, personal digital assistant or other handheld device with a digital camera, in which one of the camera or a display is movable with respect to the other to enable the camera in a first mode to capture images of the display for enabling calibration of the display, and in a second mode for capturing image other than of the display. The displays may represent rendering devices for enabling virtual proofing in a network, or may be part of stand-alone systems and apparatuses for color calibration. Improved calibration is also provided for sensing and correcting for non-uniformities of rendering devices, such as color displays, printer, presses, or other color image rendering device.

This disclosure discloses a self-diagnosing system and a method of self-diagnosing of a display device. A display device performing self-diagnosis by communicating with a server according to an exemplary embodiment of the present invention includes an outputting unit configured to output content on a screen and to output On Screen Display (OSD) data respective to each color of RGB to a predetermined area therein, a controlling unit configured to transmit a sensing command directing an initiation of self-diagnosis to a sensor attached to an area of the display device, to acquire sensing data respective to each color in accordance with the sensing command transmission from the sensor, to compare the acquired sensing data respective to each color with the outputted OSD data respective to each color, and to generate self-diagnosis result data respective to the screen based upon the compared result and transmitting the generated data to a server, and a transmitting unit configured to transmit the generated self-diagnosis data in accordance with the control of the controlling unit.

A projection system capable of projection alignment includes a projector, a shaped projection screen, an image sensor, and a processing unit. The projector is configured to project a series of alignment content to the shaped projection screen. The image sensor is configured to capture a series of projected alignment content. The processing unit is electronically coupled to the image sensor and configured to receive the series of captured alignment content and determine at least part of general boundary of the shaped projection screen based on the series of captured alignment content.

A set-top box with self-monitoring and system and method for use of the same are disclosed. In one embodiment of the set-top box, a housing secures a television input, a television output, a processor, memory, and storage therein, which are communicatively interconnected by a busing architecture. The memory is accessible to the processor, and the memory includes processor-executable instructions that, when executed, cause the processor to detect when the television is not being utilized. Responsive thereto, the instructions cause the processor to scan channels received from the television input and generate a composite TV screen image data that may be resolved to a single TV screen image made from an assemblage of TV screen image captures corresponding to the scanned channels.