567results about How to "Increase refresh rate" patented technology

A content-based adaptive refresh technique is implemented in an active matrix display system for reducing power consumption. The active matrix display system includes a display panel having multiple rows of display elements arranged as a display matrix. The display panel is coupled to a scan driver and a data driver. The scan driver selects one row at a time to receive data signals, and the data driver provides the data signals. The active matrix display system also includes a timing controller operable to signal the scan driver to cause a first row of the display panel to be not refreshed in a current data frame and a second row of the display panel to be refreshed in the current data frame.

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.

Methods for road safety enhancement use mobile communication device (MCD) onboard vehicle to share traveling data through inter-vehicle communication broadcasting, perform road hazard warning, enhance road navigation, and provide autonomous road assistance. The methods have a variety of vehicle status data, such as moving data, steering data, or indicator data, obtained through GPS or image capturing and recognition of instrument cluster of vehicle. The image capturing and recognition allows to get speed data from indication of speedometer, indication of left or right turn signal, steering action data corresponding to steering wheel rotation, and light-on indication of system status indicators. To facilitate that, the MCD may be placed in front of steering wheel, and, if applicable, also in coupling with movement of steering wheel. The MCD may perform relative positioning map-matching lane correlation and GPS-update-interval speed positioning to improve data quality regarding vehicle moving status.

A memory (10) includes a variable refresh control circuit (20) for controlling the refresh rate of a memory array (12) using a capacitor for data storage. In one embodiment, each test cell of a plurality of test memory cells (30, 32, 34, and 36) is refreshed at different rates. A monitor circuit (18) is provided for monitoring the stored logic state of each of the plurality of test memory cells, and in response, adjusting the refresh rate of the memory array (12). In another embodiment, a variable refresh control circuit (20′) includes a plurality of test memory cells (70, 72, 74, and 76) that are all refreshed at the same rate but each of the test memory cells (70, 72, 74, and 76) is implemented to have a different charge storage capacity than the other test memory cells. The monitor circuit (18) monitors the stored logic state of each of the plurality of test memory cells (70, 72, 74, and 76), and in response, adjusts a refresh rate of the memory array (12).

An apparatus and method for recording an image on the surface of a 3D object uses a laser projector that scans a light beam over the surface in an image pattern. The projector operates in a template imaging mode and an image recording mode where the beam scans at a speed that in a single pass/scan mode is typically four to five orders of magnitude slower than in the template imaging mode. A layer of a photosensitive material is applied to the surface of the object either partially or fully. Projection in the template imaging mode can guide the applying. The layer is substantially insensitive to ambient light for at least a period of time necessary to perform a desired processing step on the object. The layer has a maximum spectral sensitivity in the vicinity of the wavelength of the laser light beam. In one or multiple passes of the beam over the image pattern operating in the image record mode, the accumulated light energy dose density is sufficient to react the material and record the image.

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.

An angle-responsive sensor, comprising:

• • a radiation detector adapted to detect ionizing radiation;
  • at least one radiation absorbing element arranged to block radiation from reaching said detector in a manner dependent on a relative orientation of a radiation source, said detector and said element, said detector and said element defining an aim for said sensor; and
  • circuitry coupled to said detector and which generates an output signal which varies as a function of said relative orientation,
  • wherein said detector and said element are arranged to have a working volume of at least 10 cm in depth and having an angular width, such that said signal defines an accuracy of better than 3 mm within one standard deviation, over said working volume.

In a system for visualizing a stereoscopic image by displaying separate video images for the left and right eyes, sub-picture data (GRD) is created for the left eye and displayed superimposed on left-eye video data (VDD) as a left-eye sub-picture without change. The right-eye sub-picture (106) is displayed by shifting the horizontal positions at which the sub-picture data created for the left eye is displayed by prescribed widths. For example, the sub picture may include a plurality of objects (GRD-1, GRD-2, . . . , GRD-N); shift widths (108, 110) of the horizontal positions of the left and right ends of the objects are individually set and stored in the sub-picture data for displaying the objects for the right eye. A sub-picture superimposed on a stereoscopic video image can thereby be rendered in the depth direction, and the data size of the sub-picture and the amount of computation required for its display can be reduced.

A novel method and apparatus for controlling the display of a portable electronic device having a user input device and a camera function; the portable electronic device including a photosensor chip having a sensor array of a predetermined number of rows and columns of pixels for converting radiant energy into electronic signals representing an image for display via a viewfinder.; The method comprises selecting via the user input a zoom level and viewfinder resolution for the camera application, and in the event the zoom level is 1x then scaling the predetermined number of rows and columns of pixels to the selected viewfinder resolution and generating an image corresponding thereto; and in the event the zoom level is greater than 1x then cropping a region of interest of the predetermined number of rows and columns of pixels in accordance with the zoom level and then scaling the cropped region of interest in accordance with the viewfinder resolution and generating an image corresponding thereto.

The invention discloses a drive circuit, a drive method and a display method. The drive circuit, the drive method and the display method are used for improving refreshing frequency of scanning signals of the drive circuit. The drive circuit is used for driving pixels on an array substrate to display an image; the array substrate comprises a first display region and a second display region; the circuit comprises m lines of grid scanning lines and n lines of data signal lines which are connected with the pixels of the first display region, m lines of grid scanning lines and n lines of data signal lines which are connected with the pixels of the second display region, a grid drive circuit which is connected with all grid scanning lines, and a first source drive circuit and a second source drive circuit which drive the pixels on the array substrate; and the grid drive circuit outputs scanning signals to 2m grid scanning lines line by line simultaneously, and the first source drive circuit and the second source drive circuit output data signals to the data signal lines which are connected with the first source drive circuit and the second source drive circuit respectively, wherein m and n are positive integers.

A computerized system 40 for locating a device. System 40 includes a sensor module 20 and a CPU 42. A radioactive source 38, associated with the device, produces a signal in the form of radioactive disintegrations. Module 20 includes a radiation detector 22 capable of receiving a signal from source 38 attached to the device. Module 20 produces an output signal 34. CPU 42 receives output signal(s) 34 and translates output 34 into directional information relating to a position of source 38.

The invention discloses a multi-line scanning high-refresh-rate full-color LED driving chip and a driving method, and belongs to the field of full-color LED driving chip design. The multi-line scanning high-refresh-rate full-color LED driving chip comprises a synchronous controller, a shift register, a state register, an SRAM buffer, a gray clock generation module, a driving module, a pre-charging circuit and an analog output module. The gray scale clock generation module is used for carrying out frequency multiplication/frequency division processing on the data clock signal DCLK according to the instruction information so as to generate a gray scale clock signal GCLK for controlling the gray scale. The driving module is used for counting the gray scale clock signal GCLK to obtain gray scale counting corresponding to each row of pixel data, and generating an output waveform of a PWM signal corresponding to each row of pixel data by using N continuous rows of pixel data and the corresponding gray scale counting in each scanning process, so that multi-row scanning is realized. The analog output module is used for receiving the PWM signal and generating constant current to drive the LED lamp bead in cooperation with the pre-charging circuit. According to the chip, the refresh rate can be improved, and more scanning lines can be supported.

The present solution can include a method for handling requests to determine the locations of mobile devices in a subscriber network, such as an IMS based network. The last known location and last time of location update can be stored for each mobile device. A request for a specific mobile device can be received from a location services application. The last time of location update for the specific mobile device can be checked against a current time. If the last update time is current enough, the last known location for the device can be conveyed to the location services application. Information can then be presented on the device that is specific to its last known location.

A method for converting a compound data word 10 into a modified data word (12). The compound data word (10) has a plurality of equally weighted thermometer data bits (14) and a plurality of binary weighted data bits (16). The thermometer data bits (14) are repeated in the modified data word (12). In one embodiment, the thermometer data bits (14) are asserted first, then the binary weighted data bits (16), and then the thermometer data bits (14) again, with the second assertion of the thermometer data bits (14) being in reverse order as compared to the first assertion thereof. The weight of the thermometer data bits (14) is optionally changed to keep the relative weighting of the thermometer data bits (14) and the binary weighted data bits (16) unchanged. A display driver circuit (53) in a video display apparatus (50) has a modified data generator (54) for generating the modified data words (12), and a pulse generation and routing circuitry (56) for generating pulses and providing the pulses to a plurality of pixel electrodes (58) of a display (60).

A bi-stable display (100) is driven by supplying (101) voltage waveforms to pixels (18) of the display (100). It is determined (150), based on information to be displayed (DI) on the display (100) during an image update period (IUP), which pixels (18) have to change their optical state during the image update period (IUP). A sub-area of pixels (WI) is determined (151) which has to be updated during this image update period (IUP). The dimensions of the sub-area (W1) are dynamically determined to cover the pixels (18) which have to change their optical state during this image update period (IUP). The drive circuit (101) is controlled (152) to only address the pixels (18) of the sub-area (WI).

The invention discloses a liquid crystal display device, which comprises a liquid crystal panel circuit, a gate driving circuit, a source driving circuit, a time sequence control circuit, a backlight and a backlight control circuit, wherein the time sequence control circuit is used for outputting a gate driving signal and a source driving signal to the gate driving circuit and the source driving circuit correspondingly and outputting a backlight control signal to the backlight control circuit; the gate driving signal comprises a field synchronizing signal; the backlight control signal comprises a field synchronizing signal; the backlight control circuit is used for generating pulse-width modulation (PWM) signals and outputting the PWM signals to the backlight; and phase differences between the PWM signals and the field synchronizing signal are fixed. The invention also provides a liquid crystal display control method. The method is characterized by comprising the field synchronizing signal for controlling the output of the time sequence control circuit and the PWM signals for controlling the output of the backlight control circuit, so that the phase differences between the field synchronizing signal output by the time sequence control circuit and the PWM signals are fixed. By the liquid crystal display device and the liquid crystal display control method, the shortcoming that the image in the liquid crystal display device glitters is effectively overcome, and the quality of a liquid crystal display product is improved.