Hanwha Techwin Co., Ltd.

Skhynix Inc.

Industrial Cooperation Foundation Chonbuk National University

Sang Won Lee

Young Seo Park

Hee Jun Kim

Yun Seok Kwon

Hang Geun Jeong

A method of adjusting a bitrate of an image based includes: identifying magnitudes of one or more frequency components in the image; determining a frequency filter based on a difference between a current bitrate and a target bitrate of the image such that the greater is the difference between the current bitrate and the target bitrate, magnitudes of the more high frequency components are reduced by the frequency filter; and applying the determined frequency filter to the magnitudes of the one or more frequency components.

Method of adjusting bitrate of image and image capturing apparatus

A method of adjusting an output bitrate of an image by contrast adjustment includes: determining a maximum subtraction rate of a contrast of the image in response to a brightness of the image; comparing a current output bitrate of the image with a target bitrate while reducing the contrast of the image up to the determined maximum subtraction rate of the contrast of the image; and determining the contrast of the image to be the reduced contrast in response to determining that the reduced contrast of the image corresponds to the target bitrate.

Method of adjusting bitrate of image and image capturing apparatus, and method of generating bitrate-adjusted image

A circuit for controlling a collector current of a substrate bipolar junction transistor (BJT) is provided. The circuit includes a first current mirror configured to generate a first mirroring base current corresponding to a replicate current of a base current of the substrate BJT, a current transmitter configured to transmit the first mirroring base current, a second current mirror configured to generate a second mirroring base current corresponding to a replicate current of the first mirroring base current received from the current transmitter and configured to supply the second mirroring base current to an emitter of the substrate BJT, and a current source configured to supply a drive current corresponding to a collector current of the substrate BJT to the emitter of the substrate BJT.

Control circuits of collector current of substrate bipolar junction transistors and circuits of compensating for base current for generating a proportional to absolute temperature (PTAT) voltage using the control circuits

Growing community of inventors

Seongnam-si, South Korea

Sang Won Lee