A sensor controller, which is connected to sensor electrodes and detects positions of one or more active pens based on charge induced on the sensor electrodes, includes a processor and a memory. The memory stores instructions that, when executed by the processor, cause the sensor controller to: detect an approach of one of the one or more active pens using the sensor electrode; pair with the one of the one or more active pens with the approach of the one of the one or more active pens detected and update pairing state information indicative of a pairing state of each of the one or more active pens that is paired with the sensor controller; and transmit the pairing state information from the sensor electrodes to the one or more active pens via an uplink signal used as a reference for time synchronization.

Augmented reality headgear includes transparent displays that allow a user to simultaneously view the real world and virtual content positioned in the real world and further includes at least one source of coherent light and at least one sensor array for sensing, at a series of times, speckle patterns produced when the coherent light impinges environment surfaces. Circuitry is provided for sensing shifts in the speckle pattern and determining motion which caused the shift of the speckle pattern and adjusting the display of virtual objects displayed by the augmented reality headgear to compensate for the motion.

Disclosure is related to an optical sensor array apparatus. According to one embodiment of the invention, multiple sensor pixels are arranged as an array and forming a sensor array. Every comparator circuit is connected to one sensor pixel so as to calculate its energy state. A light source such as laser is installed in the apparatus. A control circuit is provided to recognize the sensor pixels' energy states for determining the spatial interference difference made by the reflected ray. The sensor array apparatus may be adapted to various surfaces since the light intensity and exposure time is able to be modulated as a compensation mechanism.

Disclosure is related to a light tracing method, and an apparatus thereof. According to one embodiment of the invention, the apparatus is such as an optical indexer. The method for determining a moving direction is performed based on an optical constructive or destructive interference pattern made by reflected lights received by a sensor chip. In particular, the coherent light may be preferably used in order to enhance the interference effect. In an exemplary embodiment, the method includes firstly the sensor pixels in the sensor chip receiving the reflected light, and calculating the energy. Next, within a time slot, the energy state of each sensor pixel can be calculated. A moving vector may be determined from a difference between the binary energy states of the adjacent sensor pixels. The binary energy state is based on a comparison between every sensor pixel and a statistic average within the sampling time slot.

Disclosure is related to a cursor control apparatus and a method for controlling the cursor. The cursor control apparatus essentially includes a light-emitting unit for emitting lights, a housing having a light passage thereon, a light-sensing unit and a control unit. The lights are emitted to outside the apparatus via the light passage. The light-sensing unit then receives the reflected lights from a surface via the passage, especially the lights reach a plurality of sensing cells arranged in an array. The control unit is used to control the energy of the emitting lights, and control the light-sensing unit to receive the lights. After that, the energy received by every sensing cell in an interval can be computed and find the spatial interference difference of energy. The difference is made to determine a moving direction, for example the cursor's movement with the movement of user's finger around the light passage.

Aspects of the present invention relate to methods and systems for imaging, recognizing, and tracking of a user's eye that is wearing a HWC. Aspects further relate to the processing of images reflected from the user's eye and controlling displayed content in accordance therewith.

In some aspects, the disclosure is directed to methods and systems for an advanced computer input device with a rotational degree of freedom (z.sub.rot) in addition to two translation degrees of freedom (x and y), in an easy and intuitive fashion. A plurality of independent position sensors may be arranged on a lower surface of the computer input device, each determining a direction and velocity of motion of the input device when in use. The detected directions and velocities may be compared to determine whether a rotational motion of the input device has been applied as opposed to (or in addition to) a translation.

On a play field 20 set in real space, a target region 102 having the play field 20 as a bottom surface and having a predetermined height h is set virtually. A target region image that expresses a distance of the target region 102 from an imaging surface as a pixel value on an image plane is generated, and compared with a depth image corresponding to an actual captured image 100; thus, only images of blocks 3c and 3b inside the target region 102 are extracted as detection and tracking targets.

Provided herein are an auxiliary device and a navigation system using the auxiliary device. The auxiliary device is configured to integrate with a pen mouse. When the pen mouse is tightly combined with the auxiliary device, the auxiliary device determines to use a first cursor displacement information data provided by the pen mouse and/or a second cursor displacement information data provided by the auxiliary device as a control signal for controlling a cursor corresponding to an electronic device according to an operation mode selected by the user.

A barcode-reading system may include a barcode reader that includes an illumination system, an image sensor, an optic system, a supercapacitor, and a first wireless point-to-point interface. The illumination system may be configured to illuminate a target area. The image sensor may be configured to capture an image of the target area. The optic system may be configured to focus reflected light from the target area onto the image sensor. The supercapacitor may be configured to provide operating power to the barcode reader. The barcode-reading system may also include a docking station configured to provide charging power to charge the supercapacitor of the barcode reader. The docking station may include a second wireless point-to-point interface. The first wireless point-to-point interface and the second wireless point-to-point interface may be configured to establish a wireless point-to-point communication link between the barcode reader and the docking station.