Abstract:
A restricted reception device enabling a subscriber receiver to selectively receive broadcasting data transferred via a digital cable broadcasting network, includes: a demultiplexer for receiving broadcasting data and an ECM including a CW from the subscriber receiver, and demultiplexing them, the broadcasting data and the ECM being transferred through an in-band channel; an out-of-band channel signal processor for receiving an EMM from the subscriber receiver, and processing the EMM, the EMM being transferred through an out-of-band channel; a restricted reception processor for descrambling the scrambled broadcasting data using the ECM and the EMM received from the out-of-band channel signal processor; and a remultiplexer for multiplexing the descrambled broadcasting data received from the restricted reception processor, and sending the multiplexed broadcasting data to the subscriber receiver.
Abstract:
PURPOSE: An optical alignment system using visible rays and images and an aligning method thereof are provided to perform an optical alignment process within a short period of time by using a light source of wavelengths of a visible ray region and a lensed fiber. CONSTITUTION: A first light source(200) is used for providing wavelengths of visible rays. A second light source(210) is used for providing a wavelength of an infrared region. A micrometer stage(230) is used for aligning output beams of the first and the second light sources to a light receiving part of an optical receiver. A lensed fiber(240) is connected to the micrometer stage in order to input the light into receiving part of the optical receiver. An identification unit identifies visually the aligning state of the output beams of the lensed fiber. An image information acquisition unit is connected to the identification unit in order to obtain the image information. A control circuit(280) is used for operating the micrometer stage by using the obtained image information.
Abstract:
Provided is a method for constructing and transmitting guidance information for impulse pay-per-view (IPPV) broadcasting service, and a computer-readable recording medium for recording a program that implements the method. The method of the present research includes the step of: inserting an IPPV service descriptor, which is suggested as a standard data structure for transmitting IPPV service purchase guidance information, to an aggregate event information table; and transmitting the aggregate event information table.
Abstract:
케이블 방송망을 통한 이동방송 서비스 제공 방법 및 장치가 제공된다. 케이블 방송망을 통해 케이블 방송 신호뿐만 아니라 이동방송 신호가 전송된다. 케이블 방송 신호와 이동방송 신호에서 이동방송 신호를 추출하며, 추출된 이동방송신호를 이동방송 단말로 송출한다.