Abstract: A rechargeable and waterproofing USB luminous ring that is cuttable and extendable includes a tube, an LED seat, a hard shell having a USB receptacle, and plural LEDs. Inside the tube is a string of LEDs connecting to an electric wire. The LED seat, protected by the hard shell, is sheathed by two ends of the tube and is a circuit board. The circuit connecting to the circuit board outside the LEDs is a parallel circuit, two ends of the hard shell include respectively two waterproofing ribs, an end of the hard shell is a switching button and a USB socket, and the other end of the hard shell contains two shields.

Abstract: A three-dimensional display system including a display and a pair of three-dimensional glasses having a light sensor is provided. The display includes a backlight driving module and a backlight module, wherein the backlight driving module modulates an original synchronization signal to generate a modulated backlight driving signal for driving the backlight module to generate a backlight. The display alternatively generates a left eye image and a right eye image according to a three-dimensional image signal. The three-dimensional glasses then determines whether the image output from the display is the let-eye image or the right-eye image based on the variation in brightness of the backlight generated by the backlight module of the display.

Abstract: A light ring includes an LED seat having a protection cover and a circuit board which has multiple batteries and LEDs. The circuit board is protected in the protection cover. A transparent tube has an inner diameter which is larger than that of the protection cover. Conductive gel is filled in the transparent tube. The LED seat is inserted into the transparent tube and two ends of the transparent tube are seamlessly sealed so that the LED seat, the protection cover and the circuit board are received in the transparent tube. The LED seat is sealed in the transparent tube so that the light ring is water proof. The LED seat is protected by the transparent tube and the protection cover. The two ends of the transparent tube can be easily opened.

Abstract: A stereogram apparatus comprises a digital imaging unit, a display unit, an input unit, a control unit and a printing unit. The digital imaging unit has a plurality of lens and the digital imaging unit is functioned to take a plurality of images into a plurality of graphic files. The input unit has a plurality of function keys. The display unit shows an operation screen and an image taken by the digital imaging unit. The control unit reads the plurality of graphic files and has a built-in software executing a processing to form a combinative graphic file with stereogram effect from the plurality of graphic files. The combinative graphic file is printed to form a composite plate for stereogram. The composite plate for stereogram is attached to a grating member with a predetermined angle to form an express photo with stereogram effect.