Abstract: An LED track-lighting system includes an LED for emitting light. A light-transmitting element captures light emitted by the LED light and emits it over at least a portion of the track.

Abstract: Power consumed by an LED driver may be reduced by drawing, from an electronic transformer or dimmer, an input current that is constant over a plurality of input voltages. Power derived from the constant input current is provided to the LED driver.

Abstract: A voltage level supplied to power a plurality of LED light fixtures is dynamically adjusted to control the headroom of the voltage level. The current drawn by at least one of the plurality of LED light fixtures is monitored, and the voltage is increased from zero until the monitored current reaches its maximum.

Abstract: LEDs that provide street illumination are used to create emergency signals. This facilitates simple retrofitting of existing streetlighting infrastructure. In one embodiment, a streetlight comprises an LED set that itself comprises or consists of a plurality of LEDs collectively producing a white light output. The streetlight also includes a receiver for receiving a signal of an alarm condition, and a controller for (i) disabling the LED set during a daylight period, (ii) maintaining the normal operating mode during a lighting period distinct from the daylight period, and (iii) in response to the alarm condition detected by the receiver, de-activating at least one of the LEDs to produce a non-white (e.g., red or amber) output signaling the alarm condition.

Abstract: In various embodiments, a startup circuit for a low-voltage-lighting electronic transformer includes a low-impedance output circuit. At the beginning of an AC signal cycle, the low-impedance output circuit presents a low-impedance path to the output of the transformer, thereby causing a surge of current in the transformer and initiating oscillation therein.

Abstract: A thermal-foldback system detects an over-temperature condition in an LED lamp. In response to the over-temperature condition, the thermal-foldback system chops a portion of the input power waveform drawn by the LED lamp.

Abstract: A brightness controller determines a lowest dimmer setpoint and an average power to a light source at the lowest dimmer setpoint. An average power supplied to the light source is set based on a setting of the dimmer relative to the average power at the lowest dimmer setpoint.

Abstract: A system for protecting a heat-sensitive component in an LED lamp from overheating. The system including: a heat-generating component, a heat-dissipating component thermally coupled to the heat-generating component, a heat-sensitive component electrically connected to the heat-generating component, and a heat-isolating element for thermally isolating the heat-generating component and the heat-sensitive component.

Abstract: The type of an LED power driver (i.e., a magnetic transformer or an electronic transformer) is determined by manipulating the AC voltage produced by the power driver so that it may be analyzed and the type of power driver reliably determined. In various embodiments, a system for detecting an AC power supply type includes a circuit for monitoring a negative half or a positive half of an output voltage of the AC power supply and an analyzer for determining the AC power supply type based at least in part on a presence or absence of an envelope in the monitored output voltage.

Abstract: A permanent adapter for incandescent lighting fixtures can removably receive LEDs but cannot itself be removed from the fixture.

Abstract: A kind of device to transfer film image into digital data includes a body, a frame, a bottom brace and a bottom cover wherein the frame body is assembled to the upper portion of the bottom brace and the while the body is housed in the body then the bottom cover is assembled and sealed below. A camera lens is set above the frame. A back light mechanism is set inside the bottom brace. One long groove each is set to two sides of the body and a film plate clamp is inserted from one side. This film plate clamp can fix the film plate inside and position to the top of the back light mechanism. The camera lens is utilized to access the images of the film and transfer the images into digital data to be sent to another computer for storage. The objects of rapid transfer the images on the film into the digital data for easy modification and permanent storage are thus achieved.

Abstract: LEDs that provide street illumination are used to create emergency signals. This facilitates simple retrofitting of existing streetlighting infrastructure. In one embodiment, a streetlight comprises an LED set that itself comprises or consists of a plurality of LEDs collectively producing a white light output. The streetlight also includes a receiver for receiving a signal of an alarm condition, and a controller for (i) disabling the LED set during a daylight period, (ii) maintaining the normal operating mode during a lighting period distinct from the daylight period, and (iii) in response to the alarm condition detected by the receiver, de-activating at least one of the LEDs to produce a non-white (e.g.

Abstract: A kind of device to transfer photo images into digital data includes a body wherein photo taking mechanisms are set inside and insert-fit grooves and positioning mechanisms are set with internal lighting assembling plates at the other side. The integrated photo clamps for clamping photos are put in the interior of the body through insert-fit grooves. By usage of simple operations, the images on the taken photos by photo taking mechanisms can be transferred into digital data for convenient storage, modification, or copying then printing the new photos. Thus, the present invention is rich of convenience and advancement.

Abstract: The present invention is to provide a document processing device with picture-taking, video and audio recording, scanning and projecting functions, which mainly is including a set of base composed of a left and a right base bodies, a vertical rack bar able to be insert-put on the left and right base bodies, a horizontal rack bar pivot-connected on top of the vertical rack bar, a main machine body pivot-set in the vertical rack bar elements. The said main machine body has an optical lens and is set with a microphone and a light compensator. The device of present invention can be provided for putting the ordinary document data on the base. The data on the documents can be transformed into editable files by utilizing the optical lens inside the main machine body to take the pictures and through the recognizing software. Furthermore, it can record the audio or video in accordance with selected action processes through the main machine body.

Abstract: The present invention relates to a foldable picture-taking device with scanning function including a picture-taking main body, a connecting module, and a supporting base module, wherein one end of the picture-taking main body is linked with a first revolving device and the supporting base module is linked with a second revolving device. The whole body can provide a support while taking the pictures and a convenient angle adjustment. While not being used it can be folded and carried conveniently and let the lens have a very good protection. The present invention is further cooperated with a scanning-system-software to have scanning and picture-taking functions through the connection between signal connecting interface in the picture-taking device and computer.

Abstract: Lights for attachment to a vehicle including a first illuminating means directed substantially perpendicular to a surface plane of the light and a second illuminating means directed substantially parallel with the surface plane of the light. The second illuminating means may be mounted solely within a lower hemisphere of the light. The light may also include a covering hood.

Abstract: The present invention is to provide an improved electronic greeting card, which includes an automatic power-on device that can play pre-recorded message of the sender as soon as it is opened to surprise the receiver of the card. It also includes a slidable USB connector, which provides facilitates for users in transferring or re-recording digital data from/to the electronic greeting card.

Abstract: A kind of device to transfer photo images into digital data includes a body wherein photo taking mechanisms are set inside and insert-fit grooves and positioning mechanisms are set with internal lighting printed circuit boards at the other side. A reflecting shield is provided in the body. The integrated photo clamps for clamping photos are put in the interior of the body through insert-fit grooves. By usage of simple operations, the images on the taken photos by photo taking mechanisms can be transferred into digital data for convenient storage, modification, or copying then printing the new photos. Thus, the present invention is rich of convenience and advancement.