Abstract:
An optical sheet includes a base film in which light is incident from a lower side, a plurality of prism patterns and a diffusion member. The prism patterns are protruded to be spaced apart from each other on the base film to enhance the front luminance of light incident from the lower side of the base film. The diffusion member is disposed between prism patterns to have a diffusion surface in parallel with the base film. The diffusion member includes a plurality of diffusion dots capable of enhancing the luminance uniformity of light incident from the lower side of the base film. Thus, front luminance and luminance uniformity may be enhanced due to a juxtaposition of the prism patterns and the diffusion portion, and the viewing angle of the LCD device may be enhanced.
Abstract:
A method for controlling operation of a receiver may include: generating an operation control signal based on a signal-to-noise ratio (SNR) value of an Nth symbol, wherein N is a natural number, of a hopping pattern included in a preamble of a packet; and controlling whether an Nth symbol of each hopping pattern included in a header or payload of the packet may be processed in response to the operation control signal. A receiver may include: an operation control signal generator that may generate an operation control signal based on a signal-to-noise ratio (SNR) value of an Nth symbol, where N is a natural number, of a hopping pattern included in a preamble of a packet; and a receiving unit that may control whether an Nth symbol of each hopping pattern included in a header or payload of the packet is processed in response to the operation control signal.
Abstract:
A receiver includes a frequency converter configured to generate a I signal and a Q signal from each band of a multiband signal and a mismatch compensator configured to estimate a mismatch of the I signal and the Q signal for each of the bands of the multiband signal and store at least one compensation value to compensate for the estimated mismatch. The frequency converter compensates for the mismatch of the I signal and the Q signal based on the at least one compensation value.
Abstract:
A semiconductor memory device and method of operating the same that replaces a fail normal word line that is coupled to a fail memory cell with a redundant word line from a redundant memory block. If the fail normal word line is selected during operation, both the fail normal word line and the redundant word line are activated at the same time to increase capacitance at the sense amplifier. Therefore, it may be possible to increase the exactness of a read operation or a refresh operation, and thereby improve reliability of a device operation by increasing a comparison margin of the sense amplifier.