4239 results about "Light sensing" patented technology

A touch-sensing display screen includes an upper transparent substrate, a lower substrate opposite the upper substrate, and a backlight unit having an infrared light source configured to radiate infrared light through the upper substrate in a first direction. A transparent window is disposed in alignment with the infrared light source and between the upper and lower transparent substrates. A portion of the infrared light radiated in the first direction is reflected back through the upper substrate and through the transparent window in a second direction by an object touching a surface of the upper transparent substrate. A pixel thin-film transistor on the lower substrate is configured to activate a pixel electrode, and an infrared light-sensing thin-film transistor is configured to sense the infrared light received through the upper substrate in the second direction, and output an infrared light-sense signal in response thereto.

An image sensing system for a vehicle includes an imaging sensor comprising a two-dimensional array of light sensing photosensor elements. The system includes a logic and control circuit comprising an image processor for processing image data derived from the imaging sensor. The logic and control circuit generates at least one control output for controlling at least one accessory of the vehicle. The imaging sensor is disposed at an interior portion of the cabin of the vehicle and preferably has a field of view exterior of the vehicle through a window of the vehicle.

A wireless device (100) having an optimum alert sequence definition analyzes its environment, including time and type of incoming call, and selects an appropriate alert signal sequence. A central processing unit (114) included within the device (100) is responsive to a transmitted signal from an external communications device to generate active and passive sonic sensing. The reflected signal received through the microphone (110) and a predetermined set of values or ranges stored in a memory (102) coupled to the central processing unit (114) are used as input for a program of instructions tangibly embodied in a programmable storage device executable by the central processing unit (114). Based upon processing of this reflected signal, the central processing unit (114) determines which alert signal is optimum given the environment.

The device (100) may further include characterization of the environment based on processing of the ambient noise within the environment and several inputs including: manual inputs (user indication/selection), real time clock (including date), light sensing, temperature sensing, cellular receiver indications (RSSI and local network ID), motion sensing, caller identification, global positioning system data, and radio link reception (i.e. Bluetooth: office/home network, etc.).

A portable projector comprising a projection unit for projecting an image onto a projection surface. The portable projector comprises a stabilization unit for stabilizing the projecting of the image. The portable projector further comprises a light sensing unit for scanning a region surrounding the portable projector.

A solid-state imaging device includes a first chip including a plurality of pixels, each pixel including a light sensing unit generating a signal charge responsive to an amount of received light, and a plurality of MOS transistors reading the signal charge generated by the light sensing unit and outputting the read signal charge as a pixel signal, a second chip including a plurality of pixel drive circuits supplying desired drive pulses to pixels, the second chip being laminated beneath the first chip in a manner such that the pixel drive circuits are arranged beneath the pixels formed in the first chip to drive the pixels, and a connection unit for electrically connecting the pixels to the pixel drive circuits arranged beneath the pixels.

Non-silicon based semiconductor devices are integrated into silicon fabrication processes by using aspect-ratio-trapping materials. Non-silicon light-sensing devices in a least a portion of a crystalline material can output electrons generated by light absorption therein. Exemplary light-sensing devices can have relatively large micron dimensions. As an exemplary application, complementary-metal-oxide-semiconductor photodetectors are formed on a silicon substrate by incorporating an aspect-ratio-trapping technique.

A system and method for implementing a display which also serves as one or more of a tactile user interface touchscreen, proximate hand gesture sensor, light field sensor, lensless imaging camera, document scanner, fingerprint scanner, and secure optical communications interface. In an implementation, an OLED array can be used for light sensing as well as light emission functions. In one implementation a single OLED array is used as the only optoelectronic user interface element in the system. In another implementation two OLED arrays are used, each performing and/or optimized from different functions. In another implementation, an LCD and an OLED array are used in various configurations. The resulting arrangements allow for sharing of both optoelectric devices as well as associated electronics and computational processors, and are accordingly advantageous for use in handheld devices such as cellphone, smartphones, PDAs, tablet computers, and other such devices.

An electronic imaging sensor. The sensor includes an array of photo-sensing pixel elements for producing image frames. Each pixel element defines a photo-sensing region and includes a charge collecting element for collecting electrical charges produced in the photo-sensing region, and a charge storage element for the storage of the collected charges. The sensor also includes charge sensing elements for sensing the collected charges, and charge-to-signal conversion elements. The sensor also includes timing elements for controlling the pixel circuits to produce image frames at a predetermined normal frame rate based on a master clock signal (such as 12 MHz or 10 MHz). This predetermined normal frame rate which may be a video rate (such as about 30 frames per second or 25 frames per second) establishes a normal maximum per frame exposure time. The sensor includes circuits (based on prior art techniques) for adjusting the per frame exposure time (normally based on ambient light levels) and novel frame rate adjusting features for reducing the frame rate below the predetermined normal frame rate, without changing the master clock signal, to permit per frame exposure times above the normal maximum exposure time. This permits good exposures even in very low light levels. (There is an obvious compromise of lowering of the frame rate in conditions of very low light levels, but in most cases this is preferable to inadequate exposure.) These adjustments can be automatic or manual.

Light sensing devices are monolithically integrates with CMOS devices on Thin-Film Silicon-On-insulator (TF-SOI) or Thin-Film Germanium-On-Insulator (TF-GeOI) substrates. Photodiode active layers are epitaxially grown on the front-side of the substrate and after full processing of the front-side of the substrate, the substrate material is removed under the buried insulator (buried oxide). Monolithically integrated structures are then fabricated on the back of the buried oxide. The back-side is then bonded to a new substrate that is transparent to the wavelengths of interest. For example, quartz, sapphire, glass, or plastic, are suitable for the visible range. Back-side illumination of the sensor matrix is thereby allowed, with light traveling through the structures fabricated on the back of the substrate, opposite to the side on which CMOS is made.

The application provides techniques for obtaining a relatively high dynamic range image of a scene using a relatively low dynamic range image sensor exposed to incident light from the scene for capturing an image. The image sensor has a multiplicity of light-sensing elements in an array and each light sensing element has a particular one of a plurality of sensitivity levels to incident light in accordance with a predetermined sensitivity pattern for the array of light-sensing elements and has a response function. Each light sensing element is responsive to incident light from the scene for producing a captured image brightness value at a corresponding one of a multiplicity of pixel positions of a pixel position array. Each one of the multiplicity of pixel positions corresponds to a particular one of the plurality of sensitivity levels of the light sensing elements.

A method for controlling an OLED display includes providing an OLED device and a controller, measuring and communicating the amount of ambient and emitted OLED light incident upon an array of photosensors distributed over the display area for measuring the incident light, operating the OLED pixels with at least one calibration image and forming an OLED compensation map in response to a first measured incident light, receiving a second incident light measurement and forming an ambient illumination map, receiving and compensating an image and driving the OLED pixels with the compensated image, receiving a third incident light measurement and forming large-area average values and small-area average values, and comparing the large-area average values and the small-area average values to a predetermined criterion, and determining the location of one or more light occlusions or reflections.

The invention relates to a left or right hand adapting virtual keyboard display method and terminal. The left and right hand adapting virtual keyboard display method comprises the following steps: acquiring the state of holding the terminal by the user by hand when the terminal enters the input interface, and displaying the corresponding virtual keyboard on the input interface according to the state of holding the terminal by the user by hand and the preset virtual keyboard display mode. Because the state of holding the terminal by the user by hand is judged automatically by light-sensing modules arranged on two sides of the terminal and the layout mode of the virtual keyboard is adjusted automatically according to the acquired state of holding the terminal by the user by hand, the virtual keyboard which is used by the user to input by left or right hand can be displayed on the input interface conveniently, the user can input conveniently, and the problem that the user can be not input by single hand through the virtual keyboard of the large-size touch screen terminal is avoided.

An optical touch screen that utilizes a planar transparent sheet and that is configured to determine the position of a touch event on the transparent sheet is disclosed. Light-source elements and light-sensing elements are operably disposed at the transparent sheet perimeter. Light is detected over lines-of-sight between the light-source elements and the light-sensing elements. Attenuated lines-of-sight due to a touch event are determined. Polygons are established by overlapping triangles defined by the limiting lines of sight for each light-sensing element. Polygons with attenuations below the attenuation threshold are eliminated. The centers of the remaining polygons are then determined to establish the locations of the touch events. The systems and methods provide robust detection of multiple touch events.

The invention discloses a line recognition and display device. The device comprises an array substrate, a line bearing plate opposite to the array substrate, light-sensing units, condensing lenses and shading parts, wherein the light-sensing units in at least part of pixel areas are located on the array substrate, the condensing lenses correspond to the light-sensing unit one to one and are located at the sides, facing the line bearing plate, of the light-sensing units, and the shading parts correspond to the condensing lenses one to one and are located between the condensing lenses and the corresponding light-sensing units. When a finger or palm makes contact with the line bearing plate, light which is reflected by the finger or palm and irradiated to the condensing lenses is gathered in the main optical axis direction by means of the condensing lenses, but only part of light meeting specific conditions can irradiate to the light-sensing units because of light-pervious holes, and accordingly the light-sensing units only collect light in the specific transmission direction. Thus, no matter how far the light-sensing units are from the upper surface of the line bearing plate, optical crosstalk can be reduced.

An electronic display apparatus includes a substrate, pixels and light sensing parts. The substrate includes a display region and a peripheral region adjacent the display region, and the substrate includes a plurality of gate lines extended in a first direction and a plurality of data lines extended in a second direction that is substantially perpendicular to the first direction. The pixels defined by each of the data and gate lines are formed in the display region to display an image. The light sensing part is formed in the peripheral region, and the light sensing part senses an intensity of an ambient light. The light sensing part that senses an intensity of an ambient light is formed on the array substrate, so that a luminance of the display apparatus may be adjusted in accordance with the intensity of the ambient light.

In order to allow information input using light in both the cases of strong outside light and weak outside light, two or more types of light-sensing elements having different optical sensitivities are arranged in a picture element region. For example, there are alternately arranged rows having arranged therein picture elements 21 provided with low-sensitivity light-sensing elements, and rows having arranged therein picture elements 22 provided with high-sensitivity light-sensing elements. This constitution makes it possible to perform optical information input using the high-sensitivity light-sensing elements in the case of weak outside light, and to perform optical information input using the low-sensitivity light-sensing elements in the case of strong outside light.