When the light is dimmed, the pineal eye of hatchling Xenopus laevis tadpoles excites the central pattern generator for swimming, but the behavioural significance of pineal excitation is unclear. We show that tadpoles spend 99 % of their time hanging from the surface meniscus or solid objects using mucus secreted by a cement gland on the head. Attachment inhibits swimming, but unattached tadpol...

In the visual system, optimal light stimulation sometimes generates gamma-range (ca. 20 approximately 80 Hz) synchronous oscillatory spike discharges. This phenomenon is assumed to be related to perceptual integration. Applying a planar multi-electrode array to the isolated frog retina, Ishikane et al. demonstrated that dimming detectors, off-sustained type ganglion cells, generate synchronous ...

In this paper, we present algorithms for the calculation of local dimming LED-Backlight. They assure clipper-free results and can be implemented at low HWcosts. The power saving is in average 38.7% compared to global dimming. For a XGA display 72K (RGB) logic gates are needed to implement this algorithm on chip.

LED lighting has the potential to offer many benefits to the user and to society as a whole. Very high efficiency together with extremely long life expectancy of the LEDs reduces the energy consumption and the use of resources, and can offer low lifecycle cost. In order to become widely accepted, LED lighting must provide dimming capability at least equivalent to that offered by traditional inc...

The environment development for deep sleep has been studied using analysis results of the big data about parameters in the bedroom. The organic light emitting diode (OLED) illuminations of the bedroom are dimming using analysis results of the big data. Therefore, a low-power and compact design of dimming part is required for OLED system. In this paper, the miniaturized control block of the cloc...

A 1-D LED backlight scanning and a 2-D local dimming technique for large LCD TVs are presented. These techniques not only reduce the motion blur artifacts by means of impulse representation of images in video but also increase the static contrast ratio by means of local dimming in the image(s). Both techniques exploit a unique feature of LED backlight in large LCD TVs in which the whole panel i...

David M. Hoffman (SID Member) Abstract— We evaluat Natalie N. Stepien Wei Xiong (SID Member) ed the perceived image quality of High Dynamic Range (HDR) content rendered using different types of local dimming and organic light-emitting diode (OLED) displays. Using an OLED display that is capable of achieving high contrast at a pixel level, we emulated local dimming displays to evaluate their ima...

This paper presents electronic ballast with dimming capability supplying a 32 W fluorescent lamp. The electronic ballast is a self-oscillating driving circuit with an additional circuit responsible for dimming the fluorescent lamp based on a signal from a lighting dependent resistor. This luminous sensor measures the luminous flux level and set the lamp power by the voltage gain variation of th...

A backlight local dimming algorithm is proposed to achieve high static contrast more than 10000:1 on the LCD-TV which is mounted by an LEDarray backlight. On the dark region of the image, the backlight is dimmed to reduce light leakage and get deep dark. The proposed algorithm can avoid or significantly reduce such annoying local dimming artifacts as luminance decrease, nonuniformity and screen...

Abstract Small-scale eruptions could play an important role in coronal heating, generation of solar energetic particles (SEPs), and mass source the wind. However, they are poorly observed, their characteristics, distributions, origins remain unclear. Here a mini dimming was captured by recently launched Solar Orbiter spacecraft. The observations indicate that minifilament eruption results takes...