Abstract: Disclosed herein is a method for global motion estimation for video stabilization. The method enables selecting a video frame from a video stream. The method further enables downscaling the video frames by factor close to 2 in a two dimensional range, dividing the downscaled video frame into a plurality of macroblocks, performing motion estimation for the macroblocks to generate a set of local motion vectors. Further, the method enables selecting macroblocks representing global motion vectors from the set of local motion vectors, computing a single global motion vector for the selected macroblocks and determining occurrence of at least one of: scene change, illumination change or crossing object and modifying the single global vector to compensate for errors induced due to occurrence of at least one of: scene change, illumination change or crossing object.

Abstract: Multiple images of a scene are acquired over a contemporaneous period of time. Most of the multiple images are lower resolution images acquired with a lower resolution than the other of the multiple images. A corrected set of images is formed at least by correcting for motion present between at least some of the lower resolution images. In addition, a synthesized image is formed at least by merging (a) at least a portion of at least one of the images in the corrected set of images, and (b) at least a portion of at least one of the other of the multiple images. The synthesized image is stored in a processor-accessible memory system. The synthesized image exhibits improved image quality including reduced motion blur, a higher signal-to-noise ratio, and higher resolution over conventional techniques.

Abstract: An image sensing apparatus includes an imager, an image reducer for reducing an image size from imaging data obtained from the imager, a moving image configurer for rendering an image reduced by the image reducer as a moving image, an image processor for image-processing image data, a network communicator, and a storing device for storing frame image data obtained from the imager in response to a control instruction from the outside while taking a moving image. The image data stored in the storing device is image-processed by dividing it into non-operating periods of moving image processing per frame configuring the moving image. Also, parallel processing of a moving image and a still image is performed without lowering a frame rate of the moving image.

Abstract: An electronic camera includes: an imaging device that captures a subject image and outputs image signals; an image synthesizing device that performs image synthesis to generate a single image by using a plurality of sets of image signals obtained on different imaging conditions by the imaging device; and a control device that determines whether or not to perform the image synthesis with the image synthesizing device based on a predetermined determination condition, and, when it is determined to perform the image synthesis, controls the image synthesizing device so as to perform the image synthesis.

Abstract: An information processing apparatus inputs an image, detects the face of a person from the input image, and calculates a feature amount associated with the open/closed state of eyes of the detected face. In addition, the information processing apparatus calculates, as a feature-change amount, the difference between the calculated feature amount and a predetermined feature amount, and calculates the eye open/closed degree of eyes of the detected face on the basis of the feature amount and the feature-change amount.

Abstract: An image capture device according to the present invention includes: an image capturing section for capturing a subject's image and generating image data, thereby outputting a moving picture; a first area shifting section for shifting a first area, which is associated with a first kind of feature information that represents a first feature in the image data, based on a result of search for the first kind of feature information through the image data; and a second area shifting section for shifting, independently of the first area, a second area, which is associated with a second kind of feature information that represents a second feature in the image data, based on a result of search for the second kind of feature information through the image data. If unable to detect the second kind of feature information, the second area shifting section shifts the second area with respect to the location of the first area.

Abstract: A method for monitoring set parameters of a motion-picture camera is provided. Film images, which are extracted from a recording beam path of the motion-picture camera and which are converted into digital assist signals by an optoelectronic transducer are arranged in an assist beam path of the motion-picture camera. Digital assist signals are output to a processing unit with an image frequency matching the image recording frequency of the motion-picture camera or with an assist image frequency, to which processing unit recording, control and/or status signals of the motion-picture camera or of devices connected to the motion-picture camera are additionally fed as metadata. The processing unit analyzes digital assist images composed of the digital assist signals and outputs digital output data and control signals to control modules of the motion-picture camera and/or to a network, and/or as analog or digital video signals to a monitor connected to the processing unit.

Abstract: An imaging apparatus has: a white balance control circuit for detecting an achromatic portion of an image of an object and controlling gains of the chrominance; an object distance detecting circuit for detecting a distance to the object; and a zoom value detecting circuit for detecting a zoom value of the optical system. The imaging apparatus further has: an object brightness detecting circuit for detecting brightness of the object; and a white balance control amount adjustment value setting circuit for forming a white balance control amount adjustment value to adjust a control amount in the white balance control circuit on the basis of object brightness information, object distance detection information, and zoom value information, wherein the white balance control amount is adjusted on the basis of the white balance control amount adjustment value.

Abstract: A technique for searching for probable matches in a video surveillance system is disclosed. A new event, such as a face captured in an image set, is matched against other events in a database of events. A similarity score is generated based on the difference between the new event and other events in the database. The similarity score may be weighted by information external to the image sets. Because of limited system resources, an association between a new event and every other event in the system may not be kept. Thus, when searching for probable matches of a particular event, some events that are related to the particular event may not be initially selected. Such events may be associated with an event in a first set of events that are associated with the particular event. Therefore, a second set of events is selected that are associated with the first set of events.

Abstract: A luminance signal in which the occurrence of spatial aliasing in a diagonal direction component has been suppressed for a red or blue imaging subject is generated from an image signal read from an image sensor. A V-LPF and a H-LPF generate a first luminance signal in which the spatial frequency bandwidth has been limited. Also, a V-LPF and a H-LPF, which limit the spatial frequency bandwidth so as to be even lower than the V-LPF and the H-LPF, generate a second luminance signal in which the bandwidth has been limited. A first GR weighted-addition circuit generates a final luminance signal for a pixel of interest by performing weighted-addition on the first luminance signal and the second luminance signal such that the ratio of the second luminance signal increases as the intensity of the redness or blueness of the pixel of interest increases.

Abstract: An image sensing apparatus which stores an image signal from an image sensing element and reads out and processes the stored image signal to magnify and display an image on a display device includes a designation unit that designates the magnification ratio of the image to be displayed, a storage unit that stores the magnification ratio designated by the designation unit, and a magnifying processing unit that executes magnifying processing for the stored image signal on the basis of the magnification ratio stored in the storage unit and outputs the image signal to the display device. The magnification ratio stored in the storage unit is updated when a different magnification ratio is designated by the designation unit, and the magnification ratio stored in the storage unit is used for a plurality of images that are sequentially displayed.

Abstract: An image processing apparatus includes a QV converter that converts an electric charge accumulated in an effective pixel portion into an analog video signal and also converts an electric charge of a shaded pixel portion into an analog shaded signal, a signal processing section that processes output signals of the QV converter, a black level setting section that sets a black level from a black level target value, an A/D conversion section that A/D converts an analog output signal of the signal processing section after correction thereof by the black level, a CPU that processes a digital output signal D from the A/D conversion section, a noise determination section that determines a noise level from the digital output signal, a brightness measuring section that measures brightness information of a predetermined region, and a target value setting section that sets the black level target value based on the noise level and the brightness information.

Abstract: Detection cells configured to output signals for dark current error correction. Various embodiments of detection cells accumulate dark charge supplied by dark current sources, and output dark charge signals indicating the amount of accumulated dark charge. The dark charge signals may be used to approximate the amount of dark charge read out by pixel cells of an imaging array and/or to offset portions of pixel cell signals attributable to dark charge accumulation.

Abstract: A black level compensation (BLC) circuit is disclosed. The BLC circuit includes a switched-capacitor (SC) integrator configured to compensate a readout amplifier of an image sensor. An output of the readout amplifier is clamped to a reference voltage at which a black level of the image sensor is defined. According to one aspect, a bad pixel detector is used to detect a bad pixel or pixels and disconnect the BLC loop when the bad pixel or pixels are detected.

Abstract: A defective pixel specifying method and a defective pixel specifying system for a semiconductor device having a defective pixel are provided. Also provided are an image correcting method and an image correcting system for making a defective pixel inconspicuous on the screen when a read image is displayed. The present invention determines whether or not there is a defective pixel for each pixel and specifies the coordinate of the defective pixel using image signals obtained by reading a plurality of images. The image signal of the defective pixel is set based on the image signals of the pixels adjacent to the defective pixel to correct the image of the subject read.

Abstract: Methods, apparatuses, and systems for scene adaptive lens shading correction. One or more gain adjustment surfaces calibrated to a reference illuminant type is stored. At least one scene adjustment surface, which varies as a function of the illuminant type, is stored for each additional illuminant type for which lens shading correction is desired. Additionally, an imaging device with a color image sensor may define a gain adjustment surface and a scene adjustment surface for each of the color channels of the image sensor. Scene adaptive lens shading correction entails determining an illuminant type for a captured image, selecting a scene adjustment surface based on the determined illuminant type, and processing the image using a gain adjustment surface modified by the scene adjustment surface.

Abstract: An image processing apparatus according to the present invention includes: a color and polarization obtaining section 101 including a single-chip color image capture device that has a color mosaic filter 201 and a patterned polarizer 202 in which a number of polarizer units, having polarization transmission planes defining mutually different angles, are provided for multiple pixels of the same color (G) in the color mosaic filter 201; a polarization information processing section 103 for approximating, as a sinusoidal function, a relation between the intensities of light rays that have been transmitted through the polarizer units for the G pixels and the angles of the polarization transmission planes of the polarizer units; and a color mosaic interpolation section 103 for generating a color intensity image by performing color intensity interpolation and getting a color intensity that cannot be obtained at a pixel of interest.

Abstract: An imaging array and method for capturing an image utilizing the same are disclosed. The imaging array includes an array of pixel sensors in which each pixel includes a dual-ported photodiode or photogate and a charge conversion circuit. The charge conversion circuit generates a voltage signal that is a function of a charge on the dual-ported photodiode. The controller applies a potential that varies over the exposure to the second gates in the dual-ported photodiodes, each second port passing charge stored in the photodiode connected to the second port when a potential in the photodiode exceeds the applied potential. The potential is chosen such that charge flows through the second gates of pixel sensors that are exposed to light intensities greater than a first threshold intensity during the exposure.

Abstract: An analog-to-digital converter converting an analog input signal into a digital signal includes a comparator comparing a reference signal with an input signal and, if the reference signal matches the input signal, inverting an output; and a counter counting a comparison time. The counter includes flip flops that perform serial input/output. An input and an output of the counter are interconnected. The counter operates in a counter mode and a shift register mode. In the counter mode, a data output of each flip flop is supplied to a clock input of the next flip flop, and, if the output of the comparator is at a predetermined level, the counter functions as a counter synchronized with a counter clock signal. In the shift register mode, the flip flops are cascade-connected, and the counter functions as a shift register synchronized with a shift register clock signal.

Abstract: A solid-state image pickup apparatus includes a reading unit having a plurality of pixels connected thereto, holding signals from the pixels, and a control unit capable of controlling operations of the pixels and reading unit. The control unit controls the pixels and reading unit in a first operation mode without addition, in a second operation mode in which signals from aa of the pixels are added, aa being an integer greater than one, and in a third operation mode in which signals from bb of the pixels are added, bb being an integer greater than aa. The reading unit includes a holding unit having a capacitance value of C, and the holding unit includes a first capacitor having a capacitance value of C/bb and a second capacitor having a capacitance value of C/p, p being a common multiple of aa and bb.

Abstract: A solid state imaging device having a light receiving region on a first surface side of a semiconductor substrate, incident light from an object to be imaged being illuminated on a second surface side of the semiconductor substrate, the solid state imaging device including an impurity diffusion layer formed on the first surface side of the semiconductor substrate, a surface of the impurity diffusion layer being silicided, and a gate electrode formed on the first surface side of the semiconductor substrate. The impurity diffusion layer includes the light receiving region disposed on the first surface side of the semiconductor substrate, a surface of the light receiving region being silicided, and the impurity diffusion layer includes at least a surface adjacent to the gate electrode.

Abstract: Disclosed are embodiments of a pixel imaging circuit that incorporates a standard photodiode. However, the imaging circuit is modified with a feedback loop to provide a first photo response over a first portion of the light sensing range (e.g., at higher light intensity range) and a second reduced-sensitivity photo response over a second portion of the light sensing range (i.e., at a lower light intensity range), thereby extending the circuits dynamic range of coverage. Also disclosed are embodiments of an associated imaging method and a design structure that is embodied in a machine readable medium and used in the imaging circuit design process.

Abstract: Combo lines having one odd line and one even line are utilized for generating an interlaced preview from an image sensor. Odd combo lines are read out to generate an odd field. Even combo lines are read out to generate an even field. Interpolation is performed on a plurality of odd field lines generated from the plurality of odd combo lines to generate a plurality of odd interpolated lines. Interpolation is performed on a plurality of even field lines generated from the plurality of even combo lines to generate a plurality of even interpolated lines. The interlace preview is generated from the plurality of odd interpolated lines and the plurality of even interpolated lines.

Abstract: An imaging device and method for operating the device. The device comprises a pixel array having a plurality of pixels arranged in rows and columns and a plurality of readout circuits for the pixels. A reset circuit in one readout circuit is simultaneously operated with a row select circuit in another readout circuit using a common select line. A transfer select circuit may also be simultaneously operated with the common select line.

Abstract: A pixel array architecture having multiple pixel cells arranged in a split trunk pixel layout and sharing common pixel cell components. The array architecture increases the fill factor, and in turn, the quantum efficiency of the pixel cells. The common pixel cell components may be shared by a number of pixels in the array, and may include several components that are associated with the storage and readout of a signal from the pixel cells.

Abstract: A pixel circuit configured for optionally connecting the floating diffusion region of the pixel circuit to a floating diffusion region of another pixel circuit. Methods of using the pixel circuit include averaging or summing multiple photosensor outputs in the combined floating diffusion regions, varying the conversion gain of a pixel circuit floating diffusion region, and utilizing multiple readout circuits to readout charges transferred from a single photosensor to the combined floating diffusion regions. A method of window-of-interest averaging that utilizes the combined floating diffusion regions is also disclosed.

Abstract: A solid-state imaging apparatus including: a pixel section having a plurality of pixels, each pixel containing an amplification section for outputting onto an output signal line, and a reset section for resetting an accumulation section; a noise suppressing section with using a first signal being an output from the pixel at the time of resetting for suppressing noise components contained in a second signal corresponding to the signal electric charges; and a control section for, of the outputs onto the output signal line of a first pixel being subject of the noise suppressing operation, respectively limiting the first signal and the second signal to a first electric potential and to a second electric potential with using an output resulting from reset operation onto the output signal line from a second pixel different from the first pixel and connected to the same one output signal line as the first pixel.

Abstract: An image sensor has an array of pixels of different colors. The pixels may be arranged in a repeating pattern of eight pixels having four rows and two columns. During charge summing operations, the first and third rows may share a floating diffusion and the second and fourth rows may share a floating diffusion. When charge summing is inactive, transfer gates in the first and second columns may be controlled independently, while transfer gates in pairs of rows may be controlled simultaneously. When charge summing is active, summed charges from pixels of the same color in the first and third rows may be placed on the floating diffusion shared by the first and third rows and summed charges from pixels of the same color in the second and fourth rows may be placed on the floating diffusion shared by the second and fourth rows.

Abstract: A solid-state image sensing device includes: a plurality of light receiving elements arranged in a matrix in a device formation region surrounded by a device isolation region of a semiconductor substrate; a plurality of vertical transfer sections for transferring charges of the light receiving elements in the column direction; and a horizontal transfer section for receiving the charges from the vertical transfer sections and for transferring the received charges in the row direction. The horizontal transfer section includes: a horizontal channel region; and a plurality of horizontal transfer electrodes extending over the horizontal channel region and the device isolation region and being spaced apart from each other. The distance between the horizontal transfer electrodes is larger at a boundary between the device formation region and the device isolation region than in the middle of the horizontal channel region.

Abstract: An electronic appliance includes a display. A screen of the display on which an image from a video camera is displayed is divided horizontally by N and vertically by M, to define a plurality of detection zones. A detection unit of the electronic appliance includes detectors assigned to the detection zones, respectively. In response to a motion conducted by an operator, the detectors generate first detection signals. From the first detection signals, a signal generator of the electronic appliance generates second detection signals. Each of the second detection signals is accumulated. If any one of the cumulative values exceeds a threshold, a flag is set. A plurality of detectors including the detector related to the flag-set cumulative value are chosen to receive timing pulses from a timing pulse generator.

Abstract: A drive circuit applying two or more drive voltages to a charge transfer unit includes at least one current mirror circuit that receives a reference current and outputs a predetermined current; at least one switch circuit that switches the current output from the at least one current mirror circuit to apply the multiple drive voltages to the charge transfer unit; and at least one time constant circuit that gives a predetermined time constant to the reference current in the switching by the switch circuit.

Abstract: The object is to provide an image capture device capable of carrying out good image capture in electronic viewfinder mode. When the electronic viewfinder mode is set in a single lens reflex digital camera a quick return mirror is driven so as to direct light from a photographic subject onto a CCD, and control is also carried out such that images captured by the CCD are displayed as a through image on a liquid crystal monitor at specific time intervals, with the through image display conditions being adjusted so that the image displayed as a through image is an image equivalent to an image that would be captured during main image capture with the set main image capture conditions.

Abstract: In a light spot position detection device, in one frame of operation, under control of a control unit, pixel data obtained in a pixel section in exposure of a solid-state image sensor in synchronization with light emission of a light emitting element are added to corresponding storage portions in a memory unit, and pixel data obtained in exposure of the image sensor asynchronous to the light emission of the light emitting element are subtracted from the corresponding storage portions, to store pixel data of only signal light in the storage portions. A given number of frames of operation are repetitively performed to accumulate pixel data of only the signal light in the storage portions. The position of a light spot on the pixel section is calculated based on the pixel data of only the signal light and outputted whether the storage portions are saturated or not with the pixel data.

Abstract: An image pickup apparatus capable of increasing the number of pixels in a reproduced image without a decline in image quality of a picked up image is provided. The image pickup apparatus includes: an image pickup lens section including an aperture stop, the aperture stop including a plurality of aperture sections; an image pickup device obtaining image pickup data on the basis of light received; and a microlens array section being arranged on the focal plane of the image pickup lens section between the image pickup lens and the image pickup device, and including one microlens for a plurality of pixels of the image pickup device.

Abstract: A mobile device including an image capturing unit, a flash unit and a control unit. The control unit may initiate the image capturing unit to capture an image with activating the flash unit.

Abstract: A reflowable camera module is implemented using a Chip Scale Package (CSP). An image sensor is formed on one portion of the carrier. A light emitting diode (LED) is formed on another portion of the carrier. The LED serves as an integrated camera flash. Additional optical isolation is provided within the camera module to prevent stray light generated by the LED from degrading image quality.

Abstract: In a particular embodiment, a method is disclosed that includes determining at least one ambient exposure parameter using an ambient illumination, the at least one ambient exposure parameter including a first sensitivity parameter of an autoexposure controller using the ambient illumination. The method includes determining at least one low-illumination parameter using a first lamp level, the at least one low-illumination parameter including a second sensitivity parameter of the autoexposure controller using the first lamp level, where the autoexposure controller is configured to operate according to at least one high-illumination parameter based on the at least one ambient exposure parameter and the at least one low-illumination parameter. The method further includes performing an image capture operation using a second lamp level that is brighter than the first lamp level, where the at least one high-illumination parameter includes a third sensitivity parameter.

Abstract: A solid-state image capturing apparatus includes: an insulation substrate including an external lead terminal; a solid-state image capturing element fixed on the insulation substrate and including a microlens; and a transparent glass member positioned above the insulation substrate for sealing the solid-state image capturing element fixed on the insulation substrate, and an electrode of the solid-state image capturing element and the external lead terminal of the insulation substrate being connected by a wire, wherein the transparent glass member is positioned in such a manner that a hollow space is formed between a microlens of the solid-state image capturing element and the transparent glass member, and wherein portions of the insulation film, the solid-state image capturing element and the wire, which are exposed in the hollow space, are all covered with a protective film.

Abstract: The solid image capture device 100 in accordance with the present invention is detachably fixed to a wiring board 1 and applies pressure to the side faces of a transparent lid section 3 in a direction normal to the faces, so as to nip and secure the transparent lid section 3. The mechanism allows a solid image capture element 2 to be attached to and detached from the wiring board 1. The solid image capture element 2 is readily positioned precisely on the wiring board 1.

Abstract: An image output device includes a reception unit, an output unit, and a selection reception unit. The reception unit receives a change of setting from a display mode, which is currently set to one of a plurality of display modes, to a different display mode. The output unit outputs an image signal based upon a display mode which has been received. Furthermore, when the receipt of a change of setting by the reception unit has been initiated, the output unit outputs an image for mode selection in which an image based upon the display mode which is currently set, and an image based upon another display mode among the plurality of display modes which is not currently set, are arrayed. The selection reception unit receives a selection of one display mode among the other display modes which are not currently set, among the plurality of display modes.

Abstract: Methods and systems for performing interleaved to planar transformation operations in a mobile terminal having a video display are disclosed. Aspects of one method may include extracting similar color space components from a received block of interleaved YUV color space format video data as data is received, where the block may comprise 128 bits. The similar color space components may be extracted and transferred to a memory, where each type of the similar color space components may be stored contiguously in separate portions of the memory in planar format. The transferring of data may be via direct memory access of 32-bit words. When the line buffer that is receiving the interleaved video data is full, a direct memory access operation may be initiated. Direct memory access operation may also be initiated when the data for a similar color space component for a complete horizontal line is extracted.

Abstract: A method for operating an audio/video device is presented. In the method, audio/video data, and caption data associated with the audio/video data, is received. The audio/video data is presented for display. An indication of a portion of the caption data is also received into the audio/video device. In response to receiving the indication, response data describing the indicated portion of the caption data is generated and presented for display.

Abstract: A signal processing device with high efficiency of teletext information processing is provided. The signal processing device is configured to receive and encode a transport stream for display, wherein the transport stream provides teletext information associated with a plurality of teletext lines and video information associated with a plurality of video lines. The video signal processing device includes a memory configured to store line enable signals and line data associated with the teletext lines and the video lines, a VBI controller coupled to the memory, configured to read the memory to obtain the line data associated with enabled teletext lines of the teletext lines, and an TV encoder coupled to the VBI controller, configured to receive and encode the line data associated with the enabled teletext lines for display.

Abstract: Characters represented within a frame of a television presentation are identified. A pattern formed by a subset of the characters is identified if the pattern is indicative of an addressing datum. A provision is made for a selection of characters that form the pattern indicative of the addressing datum. In one embodiment, a web page is displayed upon a selection of characters that form a pattern indicative of a uniform resource locator for the web page.

Abstract: The invention relates to systems and methods for calibrating an analogue video interface. Due to the lack of pixel clock signal (206) information in the video-handling unit, a sample clock signal (202) needs to be generated, which should correspond with the unknown pixel clock signal (206). The types of signals transmitted to the video-handling unit may correspond with strange display formats and no up-front information may be present. The present invention provides methods and systems for automatic calibration of an analogue video interface. These are based on obtaining an analogue video signal (208) that is based on a pixel clock signal (206), generating a sample clock signal (202) having a first frequency by means of a PLL feedback divider having a value, determining a phase-relation between the video signal (208) and the sample clock signal (202) and evaluating the phase-relation to determine if the correct sample clock signal (202) is generated.

Abstract: A picture control method and an image processing apparatus thereof are provided. The method includes setting a picture control mode; setting a picture control value in response to the picture control mode; and sensing a change of the picture control value; restoring the picture control value to a previous value if the change of the picture control value is maintained in excess of a certain amount of time. The image processing apparatus includes a picture controller which sets a mode and a value in response to the mode; a memory which stores an initial value of the value; and a controller which senses a change of the value and controls the picture controller to maintain the change of the value for a certain amount of time, and if the change of the value is maintained in excess of the certain amount of time, retrieves the initial value of the value, and controls the picture controller to change the picture control value to a previously unchanged value.

Abstract: A video signal processing system including a digital signal processing (DSP) module, a digital offset module coupled to the DSP module, a gain module, and a digital to analog converter (DAC) coupled to the DSP module and to the gain module, wherein the DAC is configured to cause the gain module to provide multiple gain signals having predetermined first values to the DAC, cause, for each of the multiple gain signals, a digital input signal value to the DAC to be ramped up, determine, for each of the multiple gain signals, a lowest digital input signal value that causes an output voltage of the DAC to be at least as high as a reference voltage, and determine a second gain value that will cause the DAC to provide a desired DAC output voltage in response to the DAC receiving a reference DAC input value.

Abstract: An AGC circuit is provided which includes a first AGC detector circuit that switches whether the AGC voltage is output or not, a second AGC detector circuit that always outputs the AGC voltage, a first resistor with a high impedance compared to a tuned frequency of which one end is connected to an output port of the first AGC detector circuit and the other end is connected to an output port of the second AGC detector circuit, and a switching element that is provided between the other end of the first resistor and a ground, in which an output source that outputs the AGC voltage to the amplifier can be switched to the first AGC detector circuit or the second AGC detector circuit by an On/Off operation of the switching element.

Abstract: A scene change detecting circuit (1) detects a scene change of video. An average luminance level operating circuit (2) calculates an average luminance level (APL) of a video signal (VD). A luminance overdrive amount calculating circuit (3) calculates a luminance overdrive amount (OD) based on the average luminance level (APL). A time-linked attenuating circuit (7) outputs a power consumption limit correction amount (PA) by attenuating the luminance overdrive amount (OD) with an elapse of time from a point in time of detecting the scene change. An adder (8) adds the power consumption limit correction amount (PA) and a reference power consumption limit value (Lp) to output the addition result as a power consumption limit amount (PL). An ABL circuit (4) calculates a luminance limit amount (BL) based on luminance limit characteristics, the average luminance level (APL) and the power consumption limit amount (PL).

Abstract: A television broadcast signal receiving system including an antenna apparatus including a first antenna which can receive a broadcast signal in a first frequency band and a second antenna which can receive a broadcast signal in a second frequency band and a television broadcast signal receiving apparatus including a selection unit for selecting the first antenna or the second antenna according to a frequency of a broadcast signal which is to be received, a detecting unit for detecting a receiving level of a received signal which is received by the first antenna or the second antenna, a channel setting unit for setting a channel of the broadcast signal in which the receiving level detected by the detecting unit is not less than a predetermined value as a receivable channel, and a control unit for controlling each operation of the selection unit, the detecting unit, and the channel setting unit.