Tuikkanen
Peter Tuikkanen, Eskilstuna SE
Patent application number | Description | Published |
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20100122640 | INTERNAL PRESSURE RELIEVING DEVICE FOR ANTI-ARMOUR AMMUNITION - An internal pressure relieving device for anti-armour ammunition. The device is mainly adapted for use with barrel-loaded ammunition, that is a naked round including a cartridge case, which normally would be located in its packaging. A plurality of slot formed openings have been cut out through a wall of the cartridge case and the openings have been sealed by inserts of polymeric plastic introduced with a tight fit into each opening. Hence, by the characteristics of the plastic material, the inserts can be configured to open up at a predetermined level of temperature. Alternatively, the inserts open up at a predetermined level of pressure in the cartridge case. | 05-20-2010 |
20110056363 | WEAPON WITH IM-CHARACTERISTICS - A weapon having a barrel or launch tube for a projectile or shell preloaded therein together with a propellant charge. An active vent is configured on the barrel for preventing accidental firing of the shell if the weapon becomes overheated. | 03-10-2011 |
T. Tapani Tuikkanen, Oulu FI
Patent application number | Description | Published |
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20120086701 | Combined digital modulation and current dimming control for light emitting diodes - A method includes providing an input signal identifying a desired brightness for one or more LEDs to first and second parallel control paths. The method also includes generating a digital modulation control signal using the first control path, generating a current control signal using the second control path, and driving the one or more LEDs using the control signals. The method further includes performing compensation in at least one of the control paths to compensate for an increased efficiency of the one or more LEDs. Generating the control signals could include (i) adjusting the digital modulation control signal while maintaining the current control signal at a substantially constant value for a range of lower LED brightness values and (ii) adjusting the current control signal while maintaining the digital modulation control signal at a maximum value or within a range of maximum values for a range of higher LED brightness values. | 04-12-2012 |
Tuomas Tapani Tuikkanen, Oulu FI
Patent application number | Description | Published |
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20120182209 | LED Backlight Controller - The line banding image artifact that results from the interaction of LCD ripple and LED flicker in an LCD device that utilizes LED backlighting strings is substantially reduced by selecting a number of LED strings, individually driving the number of LED strings with a corresponding number of identical clock signals that are equally phase delayed, and selecting the frequency of the clock signals so that the product of the frequency of the clock signal multiplied by the number of LED strings is equal to the line clock frequency. | 07-19-2012 |