Samsung Electronics Co., Ltd.

Seong Su Park

Seong Joo Han

Myung Sik Kim

Soo Han Park

Gye Young Lee

Jung Woo Hong

Bong Gi Kim

Disclosed herein is a food management system, a computing apparatus, and a refrigerator capable of dealing with frequent changes in a state of food stored in the refrigerator by tracking a state change of food in the refrigerator, without manual inputs from a user, and capable of expanding a service associated with food management, such as food purchase and capable of improving user convenience and accuracy of food management.

Food management system, computing apparatus and refrigerator

A compatible optical pick-up apparatus, which records to and/or reproduce from both digital versatile disc (DVD)-type optical disks and compact disc (CD)-type optical disks for improving a signal regeneration capacity and a tracking capacity in operation at a high temperature. A polarized hologram of the optical pick-up apparatus is divided into six diffraction regions. The rays of a first light diffracted at the first and second diffraction regions are separately received by divided parts of a first bisected light-receiving portion of a photodetector.

Optical pick-up apparatus

Growing community of inventors

Suwon-si, South Korea

Seong Su Park