Airoha Technology Corporation

Nextdrive Inc.

Shu-Yu Lin

Heng-Chih Lin

Che-Yuan Yen

Chung-Kuang Chen

A charge pump of a phase-locked loop (PLL) circuit includes a current source circuit, a current sink circuit, and a biasing circuit. The biasing circuit includes a current digital-to-analog converter (IDAC) and a low-pass filter (LPF). The IDAC provides a reference current in response to a current value setting, wherein a first voltage is established due to the reference current. The LPF applies low-pass filtering to the first voltage to generate a filter output as a second voltage, wherein bias voltages of the current source circuit and the current sink circuit are controlled by the second voltage.

Biasing circuit for setting bias voltages of current source circuit and current sink circuit in charge pump of phase-locked loop circuit by using current digital-to-analog converter and low-pass filter

A video image distribution method used in a mobile electronic device is disclosed to include the step of controlling the video camera and starting image capture execution command, the step of temporarily storing original video camera images, the step of enabling the proprietary camera layer to use resource images for the creation of an image processing chain, the step of allocating hardware and software resources and constructing an image processing node Then enabling image processing chain to add source images to multiple processed images for storage, and the step of creating an application user linked service execution command and distributing temporarily stored multiple images to multiple application users. As long as the hardware and software resources permit, the method of the invention can serve multiple application users to meet different needs of different application users for different format settings, achieving optimal results, and facilitating operation of the mobile electronic device.

Growing community of inventors

Taipei, Taiwan

Shu-Yu Lin