Abstract: Disclosed herein is a mobile printer freefall detection and protection mechanism. Printers may be subject to vibration or free fall during printing. This is more likely to happen for a mobile printer. In such cases, the printing performance will be adversely affected a lot or a thermal printhead (TPH) in the printer could be damaged. This disclosure describes a system and method of solving this problem by measuring the G-forces at using at least one sensor to determine if it is safe to start operation again.

Abstract: Embodiments of the present disclosure disclose a receiver, including a high-speed sampling module (110), an analog Fast Fourier Transform (AFFT) module (120), a selection switch module (130), a low-speed analog to digital converter (ADC) module (140), and a control module (150). The high-speed sampling module (110) is configured to sample a received signal and output a sampled signal; the AFFT module (120) is configured to perform time-to-frequency conversion on the sampled signal and output an analog frequency domain signal; the selection switch module (130) is configured to transmit the analog frequency domain signal to the low-speed ADC module (140); and the control module (150) is configured to perform configuration on a sampling rate of the high-speed sampling module (110), a quantity of points of Fast Fourier Transform that are used b the AFFT module (120) for performing time-to-frequency conversion, and a target input port of the selection switch module (130).

Abstract: A compatible downlight is mounted in a mounting hole (90) of a ceiling (9), the compatible downlight comprises a lamp body (1) and a first conducting wire (2) led out from an inside of the lamp body (1) and electrically connected with the lamp body (1); the compatible downlight further comprises a wiring component (3) configured to connect with an external power supply and two elastic members (4) configured for positioning and fixing the lamp body (1); each of the elastic members (4) can be fixedly connected to and detached from the lamp body (1); in addition, the first conducting wire (2) is electrically connected with the wiring component (3).

Abstract: Thermal printheads need a power and/or a data cable to deliver energy to the thermal printhead to print. With a wireless thermal printhead, however, a printer can run without using a power or a data cable. By removing the cable, benefits include shrinking the printer size, increasing durability of the printer and making it easier to change a thermal printhead.

Abstract: Control of the print temperature for a thermal printer is disclosed. Two temperature sensors are used to sense the temperature of both the thermal printhead and the environment around the print medium. In this way, the energy applied to the thermal printhead's heating elements may be adjusted to match an ideal print temperature, which depends on both the printhead temperature and the print-medium temperature.

Abstract: Thermal printheads need a power and/or a data cable to deliver energy to the thermal printhead to print. With a wireless thermal printhead, however, a printer can run without using a power or a data cable. By removing the cable, benefits include shrinking the printer size, increasing durability of the printer and making it easier to change a thermal printhead.

Abstract: A multichannel radio frequency apparatus and method are disclosed. The apparatus includes a digital baseband unit and at least one transmission subsystem, and the subsystem includes: digital up converters, configured to up-convert baseband signals generated; a digital combiner, configured to up-convert M channels of digital radio frequency signals into a high frequency band whose frequency is greater than or equal to 30 GHz, to obtain M channels of high frequency digital signals, and combine the M channels of high frequency digital signals into a channel of ultra-wideband high frequency digital signal; a DAC, configured to convert the ultra-wideband high frequency digital signal into an ultra-wideband high frequency analog signal; an analog splitter, configured to split the ultra-wideband high frequency analog signal into M channels of high frequency analog signals; and radio frequency transmitting circuits, configured to transmit the analog radio frequency signals by using radio frequency antennas.

Abstract: The invention belongs to the field of display technology, and particularly provides an array substrate and a method for manufacturing the same, and a display device. The array substrate includes a base substrate, and a thin film transistor and at least one driving electrode provided on the base substrate, and the thin film transistor includes a gate, and a source and a drain provided in the same layer, wherein the gate, the source or the drain is formed with the same material as the at least one driving electrode, and thickness thereof is larger than that of the at least one driving electrode. Regarding the array substrate, the manufacturing procedure of the array substrate is effectively simplified, cost for mask plate and material is reduced, equipment investment is reduced, production cost is saved, productivity is improved, and competitiveness of the display device is increased, while the transmittance requirement is met.

Abstract: A thermal printer includes a rotatable printhead platen and a thermal printhead mounted in cooperative association with the printhead platen. The printhead has an upstream side and a downstream side. A continuous web of thermal print media passes between the printhead platen and the printhead where the thermal printhead is operated to thermally create an image directly on the print media. A print media drive mechanism draws the print media past the printhead in a downstream direction. A heating device is positioned upstream of the printhead and is operable for pre-heating the print media to a predetermined temperature prior to printing.

Abstract: A Light Emitting Diode (LED) display screen includes: an LED display screen substrate (200), an output end of the driving circuit includes: a first positive electrode (202) and a first negative electrode (204) and the first positive electrode (202) and the first negative electrode (204) are located on a first surface of the LED display screen substrate (200); an LED chip (210), located on the first surface, and the second surface is opposite to the first surface; a first jointing part (222) and a second jointing part (204). The LED display screen solves the technical problem in the related art that the minimum dot pitch of an LED display screen is excessively large due to a limited size of a support in a conventional encapsulated lamp bead.

Abstract: A Light-Emitting Diode (LED) display includes: an LED display panel; and a display driving circuit, including a switching circuit and a control circuit, wherein the switching circuit comprises first and second switching sub-circuits; the first switching sub-circuit includes one or more field effect transistors; the second switching sub-circuit includes one or more field effect transistors; the control circuit includes a power supply control circuit connected with a third end of the switching circuit through a power supply control port. The switching circuit and the control circuit are integrated in the display driving circuit, and the two switching sub-circuits control the power supply of R/G/B LEDs in an LED particle array with M lines and N columns in the LED display panel respectively, so that the effects of small PCB area occupied by the control circuit, simple design, high refresh rate and low power consumption of the LED display are achieved.

Abstract: The invention belongs to the field of display technology, and particularly provides an array substrate and a method for manufacturing the same, and a display device. The array substrate includes a base substrate, and a thin film transistor and at least one driving electrode provided on the base substrate, and the thin film transistor includes a gate, and a source and a drain provided in the same layer, wherein the gate, the source or the drain is formed with the same material as the at least one driving electrode, and thickness thereof is larger than that of the at least one driving electrode. Regarding the array substrate, the manufacturing procedure of the array substrate is effectively simplified, cost for mask plate and material is reduced, equipment investment is reduced, production cost is saved, productivity is improved, and competitiveness of the display device is increased, while the transmittance requirement is met.

Abstract: The disclosure discloses a Light-Emitting Diode (LED) display, which includes: an LED display panel (10); and a display driving circuit (30), the display driving circuit (30) includes a driving circuit (33) and a control circuit (35), the driving circuit (33) includes a first constant current channel group (331), a second constant current channel group (333) and a third constant current channel group (335), wherein the first constant current channel group (331) controls the display of red lamp tubes of the LED display panel (10); the second constant current channel group (333) controls the display of green lamp tubes of the LED display panel (10); the third constant current channel group (335) controls the display of blue lamp tubes of the LED display panel (10); the control circuit (35) includes a driving control circuit (353), the driving control circuit (353) is configured to control the switching-on or switching-off of the driving circuit (33).

Abstract: A Light-Emitting Diode (LED) display includes: an LED display panel; and a display driving circuit, including a switching circuit and a control circuit, wherein the switching circuit comprises first and second switching sub-circuits; the first switching sub-circuit includes one or more field effect transistors; the second switching sub-circuit includes one or more field effect transistors; the control circuit includes a power supply control circuit connected with a third end of the switching circuit through a power supply control port. The switching circuit and the control circuit are integrated in the display driving circuit, and the two switching sub-circuits control the power supply of R/G/B LEDs in an LED particle array with M lines and N columns in the LED display panel respectively, so that the effects of small PCB area occupied by the control circuit, simple design, high refresh rate and low power consumption of the LED display are achieved.

Abstract: An LED display device and an LED control system.

Abstract: An apparatus and method for monitoring the movement of eyeball comprises collecting an image frame of pupil; extracting a pupil pixel set (S); extracting a boundary value of the pupil pixel set; setting a center point based on the boundary value and dividing the pupil pixel set into four quadrant sets (S1, S2, S3 and S4); calculating the coordinate of cross points of the two straight lines and traversing points in the four quadrants, wherein the cross points form a pupil center coordinate set (S5); and calculating an average value of horizontal and vertical directions according to the pupil center coordinate set (S5).

Abstract: Phase change memory cells including a phase change media can be encoded using a source of energy that is not integral with the memory cell. External sources of energy include thermal heads, such as those used in direct thermal printing or thermal transfer printing and sources of electromagnetic radiation, such as lasers. Such types of phase change memory devices can be associated with substrates that include thermochromic materials or are suitable for thermal transfer printing so that the memory cells can be encoded and print media applied to the substrate using the same source of thermal energy.

Abstract: The present invention relates to a lamp structure field, and discloses a lamp with a replaceable decorative cover, comprising a radiator having an opening in an end thereof; an LED source and a reflector disposed in a cavity of the radiator; and a decorative cover covering the opening of the radiator, wherein the radiator is provided with a plurality of elastic sheets, the decorative cover is clamped and fixed to the radiator through the elastic sheets in a detachable manner. The lamp with replaceable decorative cover of the present invention, whose decorative cover is disposed on a bottom of the lamp through the special design elastic sheet in a detachable manner and may be replaced at any time according to different requirements of the user, satisfies the various requirements of the user, in addition, the simple structure, stable connection, simple assembly and convenient disassemble further improve the practicality of the product.

Abstract: The invention provides a liquid crystal alignment film, a method for preparing the same and a liquid crystal display device comprising the same. The alignment film comprises a polyimide obtained by reacting a compound as shown in Formula 2 or Formula 3 with an aromatic diamine as shown in Formula 1, wherein the R1, R2, R3, R4, R5, R6, R7, R1?, R2?, R3?, R4?, R5?, R6?, R7?, or R8? is H, an alkyl, an aralkyl or a haloalkyl, and the Ar is an aryl. The liquid crystal alignment film has a tactic spatial configuration, decreases the ?-? attractive interaction between the polyimide backbones, allows the directional and homogenous alignment of the liquid crystal molecules on the surface of the polyimide, and thereby increases the contrast of the liquid crystal display.