The present disclosure relates to a broadcast receiving device that minimizes the time required for channel search and a display device including the same, and the broadcast receiving device includes an RF automatic gain controller configured to perform automatic gain control to adjust a gain value according to an input magnitude of an RF signal, and a controller configured to detect the presence or absence of a signal in a preset frequency band based on whether the gain value is changed, and to perform channel search in the preset frequency band according to the presence or absence of a signal in the preset frequency band.

The present disclosure relates to a broadcast receiving device that minimizes the time required for channel search and a display device including the same, and the broadcast receiving device includes an RF automatic gain controller configured to perform automatic gain control to adjust a gain value according to an input magnitude of an RF signal, and a controller configured to detect the presence or absence of a signal in a preset frequency band based on whether the gain value is changed, and to perform channel search in the preset frequency band according to the presence or absence of a signal in the preset frequency band.

Methods and apparatus to perform an automated gain control protocol with an amplifier based on historical data corresponding to contextual data are disclosed. Example apparatus disclosed herein are to select an automatic gain control (AGC) parameter for an AGC protocol based on historical data corresponding to contextual data, the contextual data including at least one of a time during which the AGC protocol is performed, a panelist identified by a meter, demographics of an audience identified by the meter, a location of the meter, a station identified by the meter, a media type identified by the meter, or a sound pressure level identified by the meter. The disclosed example apparatus are also to perform the AGC protocol based on the selected AGC parameter.

Methods and apparatus to perform an automated gain control protocol with an amplifier based on historical data corresponding to contextual data are disclosed. Example apparatus disclosed herein are to select an automatic gain control (AGC) parameter for an AGC protocol based on historical data corresponding to contextual data, the contextual data including at least one of a time during which the AGC protocol is performed, a panelist identified by a meter, demographics of an audience identified by the meter, a location of the meter, a station identified by the meter, a media type identified by the meter, or a sound pressure level identified by the meter. The disclosed example apparatus are also to perform the AGC protocol based on the selected AGC parameter.

An image pickup system includes an image pickup device including an image pickup section, a first amplifier circuit capable of amplifying a video signal for each field, and a communication circuit configured to acquire a set gain of the first amplifier circuit, a second amplifier circuit configured to amplify the video signal outputted from the image pickup device, and a processor. According to a result of a detection indicating that the video signal is not amplified by the set gain in the first amplifier circuit, a correction gain to be set in the second amplifier circuit is calculated.

Provided are an electronic system, an image system, and a method for measuring particulate matter. The electronic system includes an illuminator, a sensor and a processor. The illuminator outputs light. The sensor includes a pixel array to generate an analog signal based on scattered light according to the output light, and a converting circuit to convert the analog signal into digital signals respectively corresponding to gain values, based on the gain values. The processor counts the number of values greater than or equal to a threshold value among values of the digital signals, and calculates a concentration of particulate matter having a target size range, based on a variation in the counted number according to a change of the gain values.

Provided are an electronic system, an image system, and a method for measuring particulate matter. The electronic system includes an illuminator, a sensor and a processor. The illuminator outputs light. The sensor includes a pixel array to generate an analog signal based on scattered light according to the output light, and a converting circuit to convert the analog signal into digital signals respectively corresponding to gain values, based on the gain values. The processor counts the number of values greater than or equal to a threshold value among values of the digital signals, and calculates a concentration of particulate matter having a target size range, based on a variation in the counted number according to a change of the gain values.

An image capturing apparatus includes a graphic image generation unit configured to generate a graphic image, a communication control unit configured to obtain, from a display apparatus, conversion characteristic information indicating a relationship between a pixel value of a display image based on a captured image input from the image capturing apparatus to the display apparatus and a display luminance value in a state in which the display image is displayed on the display apparatus, and a video output unit configured to output, to the display apparatus together with a captured image, a corrected graphic image obtained by correcting a pixel value of the graphic image based on the conversion characteristic information and a target value of a display luminance value of the graphic image when the graphic image is displayed on the display apparatus.

An image capturing apparatus includes a graphic image generation unit configured to generate a graphic image, a communication control unit configured to obtain, from a display apparatus, conversion characteristic information indicating a relationship between a pixel value of a display image based on a captured image input from the image capturing apparatus to the display apparatus and a display luminance value in a state in which the display image is displayed on the display apparatus, and a video output unit configured to output, to the display apparatus together with a captured image, a corrected graphic image obtained by correcting a pixel value of the graphic image based on the conversion characteristic information and a target value of a display luminance value of the graphic image when the graphic image is displayed on the display apparatus.

A signal receiving end of a digital television includes: an analog-to-digital converter (ADC), converting an input signal from an analog format to a digital format, the input signal including a target signal and an interference signal; a digital gain control circuit, coupled to the ADC, adjusting an amplitude of the target signal according to a gain; a detecting module, coupled to the digital gain control circuit, detecting a variance in the gain to generate a detection value; and a control circuit, coupled to the digital gain control circuit, determining a gain setting parameter according to the detection value. Wherein, the digital gain control circuit further updates the gain according to the gain setting parameter.