4results about How to "Reduce power-on time" patented technology

This application discloses a controller driving method, apparatus, device, and storage medium for a display panel. The method includes: downloading firmware from a first memory of a control board; after the firmware is downloaded, reading driving data from a second memory of the control board; if the identification information in the driving data is preset first identification information, then loading initial gamma compensation data from the first memory, wherein the preset first identification information indicates that gamma compensation data is not stored in the second memory. This application embodiment saves the power-on time of the timing controller by setting identification information in the driving data in the second memory to indicate whether gamma compensation data is stored in the second memory.

The utility model relates to air bag production equipment field on mattress, especially a gas nozzle welding machine with high safety. The existing gas nozzle welding machine lacks protection when the welding nozzle and welding platform are electrified, and electric shock accidents are prone to occur. The utility model provides a gas nozzle welding machine with high safety, which comprises a rack, a welding host and a welding pedestal arranged on the rack, a control box for controlling the welding host and the welding pedestal, a liftable welding nozzle arranged on the welding host, and a corresponding welding platform arranged on the welding pedestal. The welding nozzle and the welding platform are conductive during welding operation. The gas nozzle welding machine comprises an anti-electric shock protection structure with a baffle. The anti-electric shock protection structure can separate the welding nozzle and the welding platform from the outside during welding. The utility model separates the electrified welding nozzle and welding platform from the outside during welding operation through the anti-electric shock protection structure with a baffle, avoids electric shock accidents caused by personnel contacting the electrified welding nozzle and welding platform, and improves the safety of the gas nozzle welding machine.

This invention provides a passive infrared detection device that can shorten power-on time. The passive infrared detection device includes a pyroelectric infrared sensor and an amplifier circuit. The amplifier circuit uses a non-inverting negative feedback amplifier circuit powered by dual power supplies as the primary amplifier circuit. A step-down voltage divider circuit is configured to pull down the DC bias voltage of the detection signal output from the signal output terminal of the pyroelectric infrared sensor. In this way, at the beginning of power-on of the passive infrared detection device, there is a small voltage difference between the non-inverting and inverting input terminals of the operational amplifier of the primary amplifier circuit. This reduces the time required for the voltage between the non-inverting and inverting input terminals of the operational amplifier to become consistent during the charging and discharging process, thereby shortening the power-on time of the primary amplifier circuit.

The utility model provides a passive infrared detection device that can shorten the power-on time, which comprises a pyroelectric infrared sensor and a multi-stage amplification circuit. The multi-stage amplification circuit comprises a primary amplification circuit and at least two secondary amplification circuits. Each stage of amplification circuit is provided with a negative feedback amplification circuit and has an operational amplifier OP, a feedback resistor R1 connected between the inverting input and output of the operational amplifier OP, and a series RC circuit connected to the inverting input of the operational amplifier OP. The total amplification factor of the multi-stage amplification circuit is greater than or equal to 1000, and the ratio of the resistance R1 in the feedback resistor and the resistance R in the series RC circuit in the same stage of amplification circuit satisfies 1 < R1:R ≤ 40. In this way, without changing the high-pass cutoff frequency and total amplification factor of the multi-stage amplification circuit, the power-on time is shortened by increasing the number of stages of the multi-stage amplification circuit and reducing the amplification factor of each stage of amplification circuit.