Abstract: Provided are a filter unit which may easily replace a filter, and a refrigerator including the same. To this end, a filter unit according to the present disclosure includes a filter which purifies water, a filter head which is disposed on one end portion of the filter, and includes an inlet port which supplies raw water to the filter and is formed to protrude from one side thereof, and an outlet port which discharges pure water purified by the filter and is formed to protrude from the other side thereof, a filter housing which is formed with a filter accommodation space in which the filter is accommodated, a filter bracket which is coupled to the filter housing, and includes an inlet port coupling part to which the inlet port is coupled rotatably, and an outlet portion coupling part to which the outlet port is coupled rotatably, and a filter door which is coupled to the filter housing to open and close the filter accommodation space.

Abstract: An emergency brake device for occurrence of acceleration of an elevator door of the present inventive concept is fixedly installed at both lower ends of the elevator door and moves up along a guide rail, and may be configured comprising: a fixing bracket (110) secured to the elevator door; an acceleration prevention device (100) installed in a front inner side of the fixing bracket (110) and causing a braking force when a door downward speed of the elevator door accelerates above a regulation speed; a braking blade driving mechanism (150) which receives the braking force of the acceleration prevention device (100) and brings a braking blade (151) into contact with the guide rail (300), thereby stopping the door downward movement of the elevator door; and a braking force transmission system for transmitting the braking force between the acceleration prevention device (100) and the braking blade driving mechanism (150)

Abstract: A provided computer system has a variety of additional application functions such as television, audio, video, communication, game, home automation functions, etc., as well as general mathematical computation and logic functions. Also, the system has a switch circuit and a booting control circuit. The switch circuit is used in selecting the additional functions which has a plurality of switches corresponding to the functions respectively. The booting control circuit is operated with a first supply voltage VCC.sub.-- A which allows power supply to apply a second supply voltage VCC.sub.-- B to central processing unit, several kinds of memory units and input/output peripherals when at least one of the switches is on.

Abstract: A laptop computer with an alarm function using an LCD on/off switch includes: a microcomputer both for controlling the LCD back-light section on/off operation in response to the on/off state of an LCD on/off switch and for generating an interrupt signal; an alarm processor for determining whether or not the interrupt signal is a burglar alarm signal and outputs an alarm in case of a robbery; and a password determining section for comparing a password entered by a user with a previously set password and interrupting the generation of an alarm only when both passwords are identical. A burglar alarm is sounded when an interrupt occurs so when to indicate a robbery as the LCD on/off switch is turned on against a user's will during the operation of the computer. Also, it can interrupt the alarm by a user inputting a correct password during the generation of the alarm.

Abstract: The present invention is a method and apparatus pertaining to the safe installation and disconnection of a portable computer from an electrically energized docking station. Ordinarily, the installation of an electrical sub assembly onto an electrically energized system poses a hazard to the electrical components and to data stored in memory because of harmful transient voltages, power surges, and signals produced during engagement and disengagement. The present invention protects the electrical components and data stored in memory by essentially shutting off the power in the portable unit for a brief moment as the portable unit is being either connected to or disconnected from the electrically energized docking station. The above process is accomplished by either using a pair of microswitches or a pair of light emitting/photo detecting units that sequentially toggle during either the installation or the separation process of the portable computer from the docking station.