214 results about "Frame rate control" patented technology

A video transcoding method is provided for transcoding a first signal stream compressed by a first coding scheme to a second signal stream compressed by a second coding scheme. The method employs an adaptive frame rate and a joint temporal-spatial rate control technique, such that the overall quality of compressed MPEG video can be significantly enhanced when the transcoding is controlled in the joint temporal (picture or frame rate) and spatial (quantization) domains. One embodiment considers transcoding from high bit rate video with larger image size (e.g. 4CIF / 4SIF, CIF) coded by one coding technique, e.g., MPEG-2 to a lower bit rate video with smaller image size (e.g. CIF, QCIF) coded by the same or another coding technique, e.g., MPEG-4.

A controller / driver for driving main and sub display panels is composed of first and second memory sections, a color reduction circuit, and a data line driver circuit. The first and second memory sections are used as multipurpose display memories. When the controller / driver is placed in a first mode, the first and second memory sections store therein a pair of image data color-reduced under different conditions for achieving frame rate control. When the controller / driver is placed in a second mode, on the other hand, the first and second memory sections store sub and main image data respectively associated with images to be displayed on main and sub display panels.

A video transcoding method is provided for transcoding a first signal stream compressed by a first coding scheme to a second signal stream compressed by a second coding scheme. The method employs an adaptive frame rate and a joint temporal-spatial rate control technique, such that the overall quality of compressed MPEG video can be significantly enhanced when the transcoding is controlled in the joint temporal (picture or frame rate) and spatial (quantization) domains. One embodiment considers transcoding from high bit rate video with larger image size (e.g. 4CIF / 4SIF, CIF) coded by one coding technique, e.g., MPEG-2 to a lower bit rate video with smaller image size (e.g. CIF, QCIF) coded by the same or another coding technique, e.g., MPEG-4.

Frame-rate control electronic provides gray-scale display control algorithm for STN LCD devices and constant brightness display with randomized pattern algorithm. Even distribution control of phase number reduces screen flicker and stabilizes gray-scale display. Randomized and scrambled phase number control eliminates screen beating artifacts, such as when image includes dither and checker patterns. Programmable parameters, such as tuning value, phase number matrices, and frame offset numbers, may be chosen flexibly to optimize conditions to certain display.

A method is provided for driving a liquid crystal display capable of preventing degradation of linearity of a gamma characteristic, of achieving display of a high quality image in a simple and low-priced configuration and of solving problems associated with environmental changes, frequency characteristic of timing signals, change in a gamma characteristic caused by luminance of a backlight, or dispersion in a gamma characteristic occurring during processes of manufacturing a color liquid crystal display. The method includes acquirement of first corrected red data, first corrected green data, and first corrected blue data each being of 10 bits to which information to change a gray scale two or more times for every red data, green data, and blue data has been added when a gamma correction is made to red, green, and blue data each being of 8 bits and generation of data red, green, and blue signals to be fed to a data electrode of a liquid crystal display to perform frame rate control.

In the method for managing a variable bit rate so as to provide a streaming service and in the record medium capable of being read through a computer having a record of a program to realize the inventive method, a frame rate controlling system through a removal of a frame and a fidelity controlling system are used to change a bit rate of multimedia video data and thereby provide a multimedia streaming service based on the various bit rates according to a bandwidth change of a communication network, the fidelity controlling system being gotten by differently providing selection ranges for discrete cosine transform (DCT) coefficients in a unit of a block within a frame. This inventive method comprises a first step of decomposing an original video bit stream stored already, into a file type capable of supporting the variable bit rate, and then storing it; a second step of merging data based on the decomposed type by considering a traffic state of a communication network; and a third step of providing the streaming service by using the video bit stream merged, whereby effectuating in a use of an information communication system etc.

The invention provides a regulating circuit and a regulating method capable of reducing power consumption of a screen. The regulating method comprises the steps of reading pixel values of current frame and previous frame from a frame storage unit by a difference calculation unit, calculating frame difference information, and sending to a frame difference storage unit; storing M pieces of frame difference information and sending the stored frame difference information of the current frame and the previous (N-1)th frame to a display scene judgment unit by the frame difference storage unit, and judging current display scene according to the frame difference information of the current frame and the previous (N-1)th frame and the configuration information and sending a judgment result to a display frame rate control unit and a display control unit frequency controller by the display scene judgment unit; and regulating the display frame rate by the display frame rate control unit according to the configuration information and the judgment result to change the refreshing rate, and regulating the working frequency of the display control unit by the display control unit frequency controller. According to the invention, the refreshing rate of the display screen and the working frequency of a display control circuit can be dynamically regulated according to different display scenes.

The invention provides an imaging device and a control method thereof. The imaging device is capable of carrying out shooting corresponding to the movement of the to-be-shot object or reappearing the movement of the object. The imaging device comprises a motion detecting portion (151) which detects the motion vector of the to-be-shot object within the dynamic image corresponding to the dynamic image data generated via the first frame rate, and a frame rate control unit (153) which changes the frame rate of the dynamic image data according to the variable quantity of the motion vector of the to-be-shot object detected by the motion detecting portion.

A method of operating a pixel includes generating one of m possible data streams from an n-bit input that represents a desired intensity level. The data stream is usable to drive a pixel to the desired intensity level. Each of the m data streams includes a plurality of frames. The method further includes pseudo-randomly selecting a starting frame from the plurality of frames in the data stream for a specific pixel, using the selected data stream to drive the specific pixel, and pseudo-randomly selecting a different starting frame for a different specific pixel.

The imaging apparatus of the present invention is provided with an image-forming lens that images light from a photographic subject; an imaging part that accumulates a pixel signal that corresponds to an optical image formed by the image-forming lens, reads the pixel signal and outputs the pixel signal as an imaging signal; a lens magnification control part that controls a magnification of the image-forming lens; a read-out region control part that controls the size of a read-out region of the pixel signal; and a frame rate control part that controls a frame rate of the imaging signal. In the imaging apparatus of the present invention, the magnification of the image-forming lens, the size of the read-out region, and the frame rate are controlled so that an angle of view of an image based on the imaging signal is constant.

Methods of adaptive frame rate control are provided far compressed video where resources are limited by either network or CPU characteristics. The methods include the determination of the type of compressed video frames to be transmitted or decoded and utilizing the principles of video compression and networking in order to limit the perceived loss of quality of the rendered video to the end user.

The invention discloses a 3G network video monitoring system, comprising a sending end, a frame rate control and a receiving end. The sending end is arranged in an internet protocol camera, sends network monitoring pictures and comprises the frame rate control, a video encoder and a sending module. The frame rate control masters the current network bandwidth through a response mechanism, and adjusts the encoding strategy of the video encoder and the sending strategy of the sending module in real time according the current network bandwidth. The receiving end comprises feedback control, a video decoder and a QoS (Quality of Service) monitor and receives the network monitoring pictures sent by the sending end. The invention also discloses a 3G network video monitoring method. By adopting the 3G network video monitoring system and method, the images are smoother, delay is less, and no blurry screen exists.

The invention discloses a capsule endoscopy with automatically adjusted shooting frequency and a method thereof. The capsule endoscopy comprises a capsule endoscopy shell, a battery, a camera unit, a control module, a wireless signal transceiving module, a coil, a current inductor, a frame rate control module and a magnetic field generator, wherein the coil, the current inductor and the frame rate control module are arranged in the shell; the external magnetic field generator generates a magnetic field covering an activity range of the capsule endoscopy; the current inductor are connected with two poles of the coil to form a capsule motion signal; one end of the control module is connected with the current inductor and receives the capsule motion signal, while the other end is connected with the frame rate control module to transmit a control signal for adjusting the shooting frequency; and the frame rate control module is connected with the camera unit and directly controls the shooting frequency. The shooting frequency of the capsule endoscopy is controlled through a device for automatically adjusting the shooting frequency according to the movement of the capsule endoscopy, so that the electric quantity of the capsule endoscopy is saved, the miss shooting rate is reduced and the number of repeated images is reduced.

The invention discloses a frame rate control method and a device. According to preset drop-frame processing parameters, select video frames to be discarded from received video frames; discard the video frames to be discarded and output residual video frames. By frame rate control on drop-frame, discard the video frames which can not be processed in time, instead of waiting until proper time for processing, with no large volume of video frames caching. Therefore, the process will not be delayed greatly and the process delay will not be accumulated. In addition, the inventive embodiment needs no modification for the received video frames, with the advantages of little resources consumption, simple processing process, flexible control and easy realization.

Methods and systems for providing high-quality, synchronized audio / video playback on Blackberry™-type portable electronic devices lacking native video support. Synchronization intervals are determined whereby to instantiate frame rate control signals for processing and synchronizing data in the form of stored images and audio to generate the synchronized audio / video playback.

In accordance with an embodiment of the present invention, the intelligent image quality engine intelligently manages different parameters related to image quality in the context of real-time capture of image data, in order to improve the end-user experience by using awareness of the environment, system, etc., and by controlling various parameters globally. Various image processing algorithms implemented include smart auto-exposure, frame rate control, image pipe controls, and temporal filtering.

The invention relates to an H.265 rate control method for an improved R-lambda model. The method comprises the steps that firstly, relevant parameters of the rate are initialized, and for current coding frames, the variance, the absolute error and the SAD value of each image are calculated; secondly, bit allocation at the GOP level is conducted according to the JCTVC-K0103 proposal, and the absolute errors and the SAD values are compared; thirdly, a key frame, namely an I frame is inserted, the relevant coding parameters of the rate are reset, coding is conducted in an I frame rate control mode, and then coding of the current frame is ended; finally, bit allocation at the picture level is conduced, and the relevant parameters of the rate are updated according to the improved type. According to the H.265 rate control method for the improved R-lambda model, at the same rate, the video quality is remarkably better than that obtained through an existing method, and the image quality is remarkably improved.

A flat panel display device including a linked pixel formed of a first pixel electrically connected to a pixel adjacent to the first pixel; a memory storing the location of a panel defect area, a panel defect compensation data for compensating for a brightness difference of the panel defect area, location data describing a location of the linked pixel, charge characteristic compensation data for compensating for a charge characteristic of the linked pixel; and a compensation circuit to modulate the data to be displayed at the panel defect area using at least one of a frame rate control method and a dithering method and to modulate a charge characteristic of a digital video data to be displayed at the linked pixel based on the location data and the panel defect and charge compensation data stored in the memory.

An apparatus and method for controlling picture quality of a flat panel display. The apparatus for controlling picture quality of the flat panel display includes a position determining unit which determines a display position of digital video data; a gray-level determining unit which determines a gray-level value of the digital video data; and a frame rate control unit that disperses a plurality of dither patterns determined by a compensation value for compensating for brightness in a boundary between the panel defect region and the non-defect region during a plurality of frame periods and controls data, which will be displayed in the boundary, by the compensation value, if the digital video data is determined to the data which will be displayed in the boundary between the panel defect region and the non-defect region according to the determined result of the position determining unit.

A dithering method and apparatus for a liquid crystal display is provided, wherein dithering with frame rate control and dithering without frame rate control can be selectively performed in accordance with the pattern characteristics of the input data to prevent the picture quality deterioration which can result from FRC dithering video data representing specific patterns. The pattern characteristic of the input video data is determined by a phase difference comparison between adjacent video data. A first dithering process is performed on the video data if pattern characteristic of the video data is determined to be a specific pattern, and a second dithering process utilizing a frame rate control is performed on the video data if the pattern characteristic is determined to be a general pattern.

The invention provides a frame rate control method and a device thereof. First, a frame rate control mark is generated and a frame dropping mark is arranged in the frame rate control mark; then, the frame rate control mark is read, provided that a mark read in the frame rate control mark at the moment is the frame dropping mark, an image captured by a frame at the moment is discarded. By adopting the method of reading the frame rate control mark to flexibly control frame dropping, a video frame that is not processed in time does not need to be cached and the cached video frame does not need to wait for processing either, thus improving the flexibility of the frame rate control and reducing delay in video processing.

Novel solutions are provided for consistent Quality of Service in cloud gaming system that adaptively and dynamically compensate for poor network conditions by moderating rendered frame rates using frame rate capping to optimize for network latency savings (or surplus). In further embodiments, the encoding / sent frame rate to the client can also be managed in addition, or as an alternative to capping the rendered frame rates. The claimed embodiments not only maintain a constant Quality of Service (QoS) for the user, but may also be employed to leverage higher-performing networks to reduce operational costs.

The invention discloses a camera noise and frame rate control method and device. To a noisy point generating main reason, image noisy points can be controlled from the aspect of gain adjustment, the gain can be adjusted in a user-defined mode, and further exposure time is synchronously and reversely adjusted to enable the preview brightness to keep unchanged. The change of exposure time can cause the change of the frame rate, the change of the frame rate can be directly reflected on the preview fluency and the picture definition, and a user can accurately adjust the gain according to the ambient brightness and feedback of the preview effect. Thus, the control method and device can improve the preview effect and the imaging quality from aspects of noisy points, the preview brightness, the definition and the fluency.

A frame rate control method capable of enhancing picture-quality is disclosed. The frame rate control method generates red, green, and blue frame rate control signals by frame-rate-modulating red, green, and blue frame rate control patterns on the basis of lower-bit red, green, and blue data. The lower-bit red, green, and blue data are extracted from red, green, and blue data. The red, green and blue frame rate control patterns are obtained through a process of shifting basic frame rate control patterns by different sub-pixel numbers in one direction. The basic frame rate control patterns are established for a plurality of frames.

The embodiment of the application discloses a frame rate control method, a device thereof, a storage medium and a terminal. The method includes detecting that a frame rate control event is triggered;obtaining the average frame rate and the standard deviation of the frame interval of the target application in the target sampling time; when the frame interval standard deviation satisfies a preset condition, adjusting the system frame rate to the average frame rate. Through adopting the technical solution, the average frame rate and the standard deviation of the frame interval of the target application in the target sampling time can be calculated in advance, based on the frame interval standard deviation, whether the frame rate of the system is adjusted to the average frame rate of the target application is judged, and the frame rate of the system is adjusted based on the historical frame rate information to provide a personalized frame rate control scheme, which is effectively adaptedto the user's usage habit and is easy to be popularized to other intelligent terminals.

In the method for managing a variable bit rate so as to provide a streaming service and in the record medium capable of being read through a computer having a record of a program to realize the inventive method, a frame rate controlling system through a removal of a frame and a fidelity controlling system are used to change a bit rate of multimedia video data and thereby provide a multimedia streaming service based on the various bit rates according to a bandwidth change of a communication network, the fidelity controlling system being gotten by differently providing selection ranges for discrete cosine transform (DCT) coefficients in a unit of a block within a frame. This inventive method comprises a first step of decomposing an original video bit stream stored already, into a file type capable of supporting the variable bit rate, and then storing it; a second step of merging data based on the decomposed type by considering a traffic state of a communication network; and a third step of providing the streaming service by using the video bit stream merged, whereby effectuating in a use of an information communication system etc.

According to an embodiment of the present invention, a method of driving a liquid crystal display by frame rate control (FRC) is provided, which includes: receiving an input data having a first gray from an external graphic source; converting the input data to have bit number larger than the input data; and performing FRC on the converted data.

The embodiment of the invention discloses a frame-rate control method and device, and relates to the image processing field. The objective of the invention is to provide a scheme capable of controlling the frame rate of a multi-video data collection channel and solve the phenomenons of bus jam, data loss and system confusion caused by video data collection through multiple channels. In the invention, according to the common multiple of the original frame rate of each channel, the total frame rate employed by the upper sampling processing of the original frame drawing index list of each channel is determined; performing the upper sampling of the original frame drawing index list, and determining the processed upper sampling frame drawing index list; performing displacement of the upper sampling frame drawing index list according to the overlapping degree between the upper sampling points occupied by the drawing sampling frames represented by the upper sampling frame drawing index list of each channel; and performing lower sampling process of the upper sampling frame drawing index list with the lowest overlapping degree, determining the processed real frame drawing index list, and performing the frame rate control. Therefore, the problems mentioned above are solved.

A driving system and a driving method for motion pictures are described, using an input, a black image insertion module, an advanced overdrive module, and a partial frame rate control module. The input receives a first frame and a second frame in order. The black image insertion module inserts a single fixed gray level frame between the first frame and the second frame. The advanced overdrive module boosts the second frame to (n+a) bits and transfers the same to the overdrive image, in which the first frame and the second frame are n bits. The partial frame rate control module smoothes the overdrive image and transfers the same to an output image to refresh the pixels from the single fixed gray level frame to the second frame.

Embodiments of the invention are related to a system and method of controlling a display of image stream. The system may include a memory to store the image stream; the image stream may comprise a plurality of image frames. The system may further include a processor configured to execute the method. The moving image stream may be displayed to a user in an image stream display area of a screen and a frame rate control interface may be generated on a speed control area of the screen, such that the image stream display area is horizontally adjacent to the speed control area. An indication of a desired frame rate for displaying the image stream of the image frames may be received from the user, in that the frame rate may be selected according to a location of a pointing indicator in the speed control area.