Abstract: Examples described herein relate to a display engine. In some examples, at least one processor is to generate one or more planes of a frame and store the generated one or more planes of a frame into the at least one memory. In some examples, the at least one processor is to determine whether a plane in the frame is a candidate plane for compression. In some examples, for the candidate plane for compression, based on the candidate plane not being subject to compression, the at least one processor is to adjust a plane level of the candidate plane to subject the candidate plane to compression. In some examples, the plane level of the candidate plane to subject the candidate plane to compression is a bottom most level. In some examples, for the candidate plane for compression, based on the candidate plane not being subject to compression and the candidate plane including content that would be occluded by an upper level plane, the at least one processor is to retain a plane level of the candidate plane.

Abstract: A power distribution system is provided for distributing power in a portable device being coupable to a charging system and including a main battery power and a bridge battery power. The charging system is coupled to a power bus through a diode. The main battery power system and the bridge battery system are also both coupled to the power bus through diodes. The predetermined voltage level is set with respect to the charging system, the main battery and the bridge battery, such that if all three are coupled to the bus, the recharging system both powers the unit and recharges the main battery. If the recharging system is removed, the main battery power system powers the portable device, and if the main battery power system is removed the bridge battery will provide power to the portable device.

Abstract: A power distribution system is provided for distributing power in a portable device being coupable to a charging system and including a main battery power and a bridge battery power. The charging system is coupled to a power bus through a diode. The main battery power system and the bridge battery system are also both coupled to the power bus through diodes. The predetermined voltage level is set with respect to the charging system, the main battery and the bridge battery, such that if all three are coupled to the bus, the recharging system both powers the unit and recharges the main battery. If the recharging system is removed, the main battery power system powers the portable device, and if the main battery power system is removed the bridge battery will provide power to the portable device.

Abstract: A power distribution system is provided for distributing power in a portable device being coupable to a charging system and including a main battery power and a bridge battery power. The charging system is coupled to a power bus through a diode. The main battery power system and the bridge battery system are also both coupled to the power bus through diodes. The predetermined voltage level is set with respect to the charging system, the main battery and the bridge battery, such that if all three are coupled to the bus, the recharging system both powers the unit and recharges the main battery. If the recharging system is removed, the main battery power system powers the portable device, and if the main battery power system is removed the bridge battery will provide power to the portable device.