Samsung Electronics Co., Ltd.

Seoul National University

Min-Su Lee

Hyun-su Hong

Jae-myeon Lee

Sun-young Park

Chan-Gook Park

Eun-Chul Yoon

Seung-Hyuck Shin

A method and apparatus of a portable terminal estimate a step length of a pedestrian. An accelerometer detects acceleration caused by a movement of the portable terminal as a pedestrian carrying the portable terminal walks. A gyroscope detects angular velocity caused by the movement of the portable terminal as the pedestrian walks. A controller determines a magnitude of a swinging motion of the portable terminal by using at least one of the detected acceleration and angular velocity, determines that the portable terminal makes the swinging motion when the magnitude of the swinging motion is equal to or greater than a predetermined value, determines a carrying position of the portable terminal in the pedestrian's body by using at least one of the detected acceleration and angular velocity, and estimates a step length of the pedestrian according to the determined carrying position of the portable terminal.

Method and portable terminal for estimating step length of pedestrian

An apparatus and method for beamforming in a communication system are provided, in which a base station receives a channel vector from each of a plurality of mobile stations, generates an uplink channel matrix using the received channel vectors, generates a beamforming weight vector using the uplink channel matrix and a fixed constant that minimizes a channel error rate, and forms beams using the beamforming weight vector.

Apparatus and method for beamforming in a communication system

A device for inserting and extracting a disk cartridge for use in a disk player, includes a locking member slidably installed on a cartridge holder for performing a locking/release function; a locking release member one end of which is rotatably installed on the deck having a center of rotation above that of the cartridge holder, so that the other end is interlocked with the cartridge holder to release a locking state of the locking member; and an extracting member being rotatably installed on the cartridge holder and having one end locked by the locking member. A lift on the extracting member lifts the locking release member. A cartridge is inserted or withdrawn from the cartridge holder when the cartridge holder and the locking release member are pivoted upward away from the deck of the player. No motor is used for insertion and withdrawal.

Device for inserting/extracting a disk cartridge with locking mechanism

A head drum and tape transport driving device for a video tape recorder which can transport the magnetic tape by means of one motor used for driving the had drum. Supply and take-up reels are provided for supplying a data-recordable tape and winding up the same. A head drum carries a head for recording and/or reproducing data on or from the tape. A motor drives the head drum and a tape transport device transports the tape past the head drum. A first power transmission transfers motive power from the motor to tape transport device and a second power transmission selectively transfers motive power of the tape transport device to the supply reel or the take-up reel.

Head drum and tape transport driving device for a video tape recorder

A magnetic recording and reproducing apparatus for selectively recording and reproducing information on either an analog signal magnetic tape or a digital signal magnetic tape. A head drum is provided with both analog signal heads and digital signal heads, and a signal current is selectively applied to each head depending on the type of tape loaded in the apparatus. When an analog signal magnetic tape is loaded, the head drum is rotated in the direction corresponding to the direction of tape travel. When a digital signal magnetic tape is loaded, the head drum is rotated in the direction opposing the direction of tape travel.

Magnetic recording and reproducing apparatus for recording and

A magnetic recording/reproducing apparatus (VTR, Camcorder, DAT and the like) which can record and reproduce image signals and audio signals on a magnetic tape. The magnetic recording/reproducing apparatus is equipped with two magnetic head drums having mutually-opposing set-up angles and rotating directions, with one head drum for recording signals or reproducing the recorded signals on the upper domain of a tape when the tape is played in a first direction and with another head drum for recording signals or reproducing the recorded signals on the lower domain of a tape when the tape is played in an opposite direction. The magnetic recording/reproducing apparatus can record or reproduce in both directions, eliminating the drawback of compulsory rewinding after reproduction, and thus enabling long duration of recording and reproduction by doubling the usage time of the tape.

Growing community of inventors

Suwon, South Korea

Min-Su Lee