1522 results about "Refresh rate" patented technology

A system and method of automatically selecting a vertical refresh rate for a video display monitor is disclosed.The system includes an ambient light frequency identifier and a vertical refresh rate selector. The ambient light frequency identifier is configured for capturing lightwaves from an ambient light source and for identifying a frequency of the lightwaves. The vertical refresh rate selector is configured for automatically selecting a vertical refresh rate for the video display monitor based on the identified ambient light frequency.

A computerized method of presenting information from a variety of sources on a display device. Specifically the present invention describes a graphical user interface for organizing the simultaneous display of information from a multitude of information sources. In particular, the present invention comprises a graphical user interface which organizes content from a variety of information sources into a grid of tiles, each of which can refresh its content independently of the others. The grid functionality manages the refresh rates of the multiple information sources. According to one embodiment, the method of the present invention allocates refresh rates to tiles according to priorities that are assigned based on identifiers such as quality of service (QoS) tags associated with one or more of the information sources. The present invention is intended to operate in a platform independent manner.

A computerized method of presenting information from a variety of sources on a display device. Specifically the present invention describes a graphical user interface for organizing the simultaneous display of information from a multitude of information sources. In particular, the present invention comprises a graphical user interface which organizes content from a variety of information sources into a grid of tiles, each of which can refresh its content independently of the others. The grid functionality manages the refresh rates of the multiple information sources. According to one embodiment, the method of the present invention allocates refresh rates to tiles according to priorities that are assigned based on identifiers such as quality of service (QoS) tags associated with one or more of the information sources. The present invention is intended to operate in a platform independent manner.

Current approaches to paperless books use single screen laptop computers or electronic paper display (EPD)-based book readers. Laptop computers consume too much power and cannot be used for extended periods of time, such as an entire school day, without recharging its battery. EPD devices are limited in functionality due to their slow refresh rate and grey-scale only images. An embodiment of the present invention integrates bi-stable display technology and refresh display technology into a single device and manages the use of these technologies to achieve power savings while providing a rich set of display functionalities to support user interaction with content in a synergistic manner. The power savings functionality enables the device to have a battery operating life between charges of many hours of operation, such as eight hours or more, while the display functionality enables users to access, display, and interact with content in ways users have become accustomed and in ways not before possible.

Described is a method and system for power management of mobile computer displays, in which areas of the screen are selectively controlled to consume less power than other areas. For example, a foreground window having focus may receive normal brightness, while background areas are dimmed. To this end, the pixels of selected areas are controlled to vary color depth, resolution, refresh rate, brightness and / or the on / off state for any part of the display. Power settings for parts of the display not corresponding to a focused window can be gradually reduced over time. Power policy may determine which areas are given reduced power, and external mechanisms provide information useful in the determination, such as when the user last interacted with a window, where the mouse is hovering, explicit user instructions as to how to power manage a window, and sensors that detect where the user is likely to want more power.

The present invention relates to a system that facilitates multi-tasking in a computing environment. A focus area component defines a focus area within a display space—the focus area occupying a subset area of the display space area. A scaling component scales display objects as a function of proximity to the focus area, and a behavior modification component modifies respective behavior of the display objects as a function their location of the display space. Thus, and more particularly the subject invention provides for interaction technique(s) and user interface(s) in connection with managing display objects on a display surface. One aspect of the invention defines a central focus area where the display objects are displayed and behave as usual, and a periphery outside the focus area where the display objects are reduced in size based on their location, getting smaller as they near an edge of the display surface so that many more objects can remain visible. In addition or alternatively, the objects can fade as they move toward an edge, fading increasing as a function of distance from the focus area and / or use of the object and / or priority of the object. Objects in the periphery can also be modified to have different interaction behavior (e.g., lower refresh rate, fading, reconfigured to display sub-objects based on relevance and / or visibility, static, etc.) as they may be too small for standard rendering. The methods can provide a flexible, scalable surface when coupled with automated policies for moving objects into the periphery, in response to the introduction of new objects or the resizing of pre-existing objects by a user or autonomous process.

One embodiment of the present invention sets forth a technique for generating a transparency effect for a computing device. The technique includes transmitting, to a camera, a synchronization signal associated with a refresh rate of a display. The technique further includes determining a line of sight of a user relative to the display, acquiring a first image based on the synchronization signal, and processing the first image based on the line of sight of the user to generate a first processed image. Finally, the technique includes compositing first visual information and the first processed image to generate a first composited image, and displaying the first composited image on the display.

An multi-touch detection system (100) separately determines each of the coordinates of multiple touches and is able to correctly pair the coordinates, the touch panel includes multiple (e.g., two or four) separate sections (104, 106, 404, 406, 504, 506, 508, 510) to detect touches in different areas. The system (100) is able to operate at high refresh rates allowing speed sensitive applications to be supported.

When switching sources, resolutions or refresh rates in a video distribution network, switching times are reduced by maintaining video lock and security authentication between a video switcher and a video sink. The scaler maintains video lock and security authentication by continuing to generate video timing data during switching events. The scaler also facilitates an aesthetically pleasing transition by generating image content data prior to and after the switching event.

Circuits for programming a circuit with decreased programming time are provided. Such circuits include a storage device such as a capacitor for storing display information and for ensuring a driving device such as a driving transistor drives a light emitting device according to the display information. The present disclosure provides driving schemes for decreasing flickering perceived while displaying video content by introducing idle phases in between in emission phases to increase the effective refresh rate of a display. Driving schemes are also disclosed for reducing the effects of cross-talk by ensuring that programming information is refreshed in a display array that utilizes a driver connected to multiple data lines via a multiplexer.

When switching sources, resolutions or refresh rates in a video distribution network, switching times are reduced by maintaining video lock and security authentication between a video switcher and a video sink. The scaler maintains video lock and security authentication by continuing to generate video timing data during switching events. The scaler also facilitates an aesthetically pleasing transition by generating image content data prior to and after the switching event.

A method and apparatus for controlling a DRAM refresh rate. In one embodiment, a computer system includes a memory subsystem having a memory controller and one or more DRAM (dynamic random access memory) devices. The memory controller is configured to periodically initiate a refresh cycle to the one or more DRAM devices. The memory controller is also configured to monitor the temperature of the one or more DRAM devices. If the temperature exceeds a preset threshold, the memory controller is configured to increase the rate at which the periodic refresh cycle is performed.

There is provided a TFT backplane having at least one TFT with oxide active layer and at least one TFT with poly-silicon active layer. In the embodiments of the present disclosure, at least one of the TFTs implementing the circuit of pixels in the active area is an oxide TFT (i.e., TFT with oxide semiconductor) while at least one of the TFTs implementing the driving circuit next to the active area is a LTPS TFT (i.e., TFT with poly-Si semiconductor).

Synchronization of display functions and various touch, stylus and / or force sensing functions for devices including a variable refresh rate (VRR) display is disclosed. In some examples, touch, stylus and / or force sensing functions can be synchronized with display frames and a display refresh rate can be adjusted by extended blanking of the display for one or more display frames. In other examples, touch, stylus and / or force sensing functions can be synchronized with display sub-frames and a display refresh rate can be adjusted by extended blanking of the display for one or more display sub-frames. Pre-warning synchronization signals can be generated to prepare one or more scan controllers to implement the appropriate scan events during and after extended blanking periods. Latency between the scan results and the corresponding image on the display can be corrected in software and / or firmware by time-stamping scan results or by dropping scan results from uncompleted scans.

A method of refreshing an image on a display device includes receiving an image to be displayed (810) at a display (110); processing said received image to obtain at least one image parameter relating to said image to be displayed (810); and varying a rate (930) at which said displayed image is refreshed based on said image parameter. A video or image display device, and a display driver, have also been described. This provides the following advantages that the refresh rate is constantly being varied in response to the images being displayed so as to constantly minimise the power consumption of the display device without noticeable flickering of the display device. Furthermore, the quality of the image is maintained at a continuous level, irrespective of the changes in, for example the complexity or number of colours used in a particular image.

A method and computer graphics system capable of super-sampling and performing real-time convolution are disclosed. In one embodiment, the computer graphics system may comprise a graphics processor, a sample buffer, and a sample-to-pixel calculation unit. The graphics processor may be configured to generate a plurality of samples. The sample buffer, which is coupled to the graphics processor, may be configured to store the samples. The sample-to-pixel calculation unit is programmable to generate a first subset of pixels by filtering using the rendered samples and a second subset of the output pixels by interpolating using the first subset of pixels and / or the rendered samples. By interpolating a subset of the output pixels, the graphics system may be able to operate at higher resolutions and / or refresh rates since filtering of the samples is computationally intensive. Any ratio of the number of first subset of pixels to the number of the second subset of pixels may be used, and furthermore, a different ratio may be used for different regions of the display screen. A higher ratio of the number of first subset of pixels to the number of second subset of pixels may be used for regions of the screen where a higher quality image is desired and a lower ration may be used for regions where a lower quality image may be sufficient. For example, a higher quality image may be desired close to and around the foveation point where the eye of an observer is focused.

A dynamic random access memory (“DRAM”) device is operable in either a normal refresh mode or a static refresh mode, such as a self-refresh mode. A cell plate voltage selector couples a voltage of one-half the supply voltage to the cell plate of a DRAM array in a normal refresh mode and in the static refresh mode when memory cells are being refreshed. In between refresh bursts in the static refresh mode, the cell plate voltage selector couples a reduced voltage to the cell plate. This reduces the voltage reduces the voltage across diode junctions formed between the source / drain of respective access transistor and the substrate. The reduced voltage reduces the discharge current flowing from memory cells capacitors, thereby allowing a reduction in the required refresh rate and a consequential reduction in power consumption.

A panel may be arranged to display image data, and a backlight may be arranged to illuminate a back of the panel. A timing generator may be arranged to control the refresh rate of the panel, and a modulator may be arranged to control the backlight based on an associated modulation frequency. A coordinator may be arranged to synchronize between the refresh rate and the modulation frequency when the refresh rate or the modulation frequency is changed.

A method and apparatus are provided for controlling refresh operations of a dynamic memory device. The temperature of the dynamic memory device is detected. The detected temperature is then used to adjust a refresh rate of the dynamic memory device to compensate for increased leakage at higher temperatures and more closely tailor the timing of the refresh operations to the conditions of the dynamic memory device.

Disclosed are a device and a method for displaying a private image on a public display device. Image sequence pattern is generated for the private image and the corresponding masking image. The masking image is made from the dynamic inverse image of the private image, based on the refresh rate of the display device and the image sequence pattern. The masking image can screen the private image more effectively. The private image and the masking image is displayed on the display device according to the image sequence pattern.

The present invention relates to a system that facilitates multi-tasking in a computing environment. A focus area component defines a focus area within a display space—the focus area occupying a subset area of the display space area. A scaling component scales display objects as a function of proximity to the focus area, and a behavior modification component modifies respective behavior of the display objects as a function their location of the display space. Thus, and more particularly the subject invention provides for interaction technique(s) and user interface(s) in connection with managing display objects on a display surface. One aspect of the invention defines a central focus area where the display objects are displayed and behave as usual, and a periphery outside the focus area where the display objects are reduced in size based on their location, getting smaller as they near an edge of the display surface so that many more objects can remain visible. In addition or alternatively, the objects can fade as they move toward an edge, fading increasing as a function of distance from the focus area and / or use of the object and / or priority of the object. Objects in the periphery can also be modified to have different interaction behavior (e.g., lower refresh rate, fading, reconfigured to display sub-objects based on relevance and / or visibility, static, etc.) as they may be too small for standard rendering. The methods can provide a flexible, scalable surface when coupled with automated policies for moving objects into the periphery, in response to the introduction of new objects or the resizing of pre-existing objects by a user or autonomous process.

The present invention provides methods and structures for improving refresh power efficiency of dynamic random access memory devices. By measuring charge retention properties of reference cells that have substantially the same structures as normal DRAM memory cells, the refresh rate of DRAM devices can be adjusted with better reliability. The reliability is further improved by using ECC circuits and / or field programmable redundancy circuits.

The invention is suitable for the technical field of information and provides a method and device for adjusting the refreshing rate of a screen. The method includes the steps that a screen image of a current frame is obtained, whether the screen image of the current frame is the same with a screen frame of a previous frame or not is judged; if the screen image of the current frame is different from the screen image of the last frame, the current screen refreshing rate is adjusted to a first preset value; if the screen image of the current frame is the same with the screen image of the previous frame, the current screen refreshing rate is adjusted to a second preset value, and the second preset value is smaller than the first preset value. According to the method and device for adjusting the refreshing rate, when a dynamic image is displayed on a screen, the high screen refreshing rate is set to ensure the display fluency of the dynamic image, when a static image is displayed on the screen, the current screen refreshing rate is reduced, and therefore under the premise that the display effect of the screen is ensured, power consumption is lowered.

The invention provides a method and device for displaying screen refresh rate. The method comprises the steps of obtaining display information of application scenarios, wherein the display information comprises image display types corresponding to layers of the application scenarios; according to the image display types, searching for corresponding layer refresh rate; according to the layer refresh rate, calculating display clock frequency of a screen, and displaying the layers according to the calculated display clock frequency. By means of the method and device, the display screen can adopt different display clock frequencies according to the layers of the different application scenarios, so that different screen refresh rates are adopted for displaying, and the purposes of lowering power consumption and reducing heat radiation are achieved.

Described is a method and system for power management of mobile computer displays, in which areas of the screen are selectively controlled to consume less power than other areas. For example, a foreground window having focus may receive normal brightness, while background areas are dimmed. To this end, the pixels of selected areas are controlled to vary color depth, resolution, refresh rate, brightness and / or the on / off state for any part of the display. Power settings for parts of the display not corresponding to a focused window can be gradually reduced over time. Power policy may determine which areas are given reduced power, and external mechanisms provide information useful in the determination, such as when the user last interacted with a window, where the mouse is hovering, explicit user instructions as to how to power manage a window, and sensors that detect where the user is likely to want more power.

The invention discloses a plane and barrier detection method based on an RGB-D camera and an attitude sensor, and the method achieves the environmental three-dimensional information recognition with higher resolution, higher refresh rate and higher precision based on the RGB-D camera and the attitude sensor. The method can achieve the recognition of a ground passage, the judgment and early-warning of a ground cavity and various types of barriers and the recognition of scenes of going upstairs and downstairs, and is close to the visual sensing of an environment. Through the cooperation of the attitude sensor, a whole system is more flexible and portable, and the camera does not need to keep a fixed relative position with a user or any other ground reference object. When a visually-impaired person goes out, the camera can be placed at any body part which can photograph a three-dimensional environment. A portable computer or pad compatible with the RGB-D camera can be selected by himself or herself to achieve the same function.

A DRAM memory device includes several banks of memory cells each of which are divided into first and second sets of memory cells. The memory cells in the first set can be refreshed at a relatively slow rate to reduce the power consumed by the DRAM device. Error checking and correcting circuitry in the DRAM device corrects any data retention errors in the first set of memory cells caused by the relatively slow refresh rate. The memory cells in the second set are refreshed at a normal rate, which is fast enough that data retention errors do not occur. A mode register in the DRAM device may be programmed to select the size of the second set of memory cells.