Abstract: Provided are a circuit and method for sampling a valid command using a valid address window extended for a high-speed operation in a double pumped address scheme memory device. A method for extending the valid address window includes: inputting a valid command signal and a first address signal at the first cycle of a clock signal; inputting a second address signal at the second cycle of the clock signal; generating a decoded command signal and extended first and second internal address signals respectively in response to the command signal and the address signals; and latching and decoding the extended first and second internal address signals in response to the decoded command signal.

Abstract: There is provided a method of fabricating a lithography mask, the method including: forming a transparent polymer layer on a surface of a first substrate where a convex-concave pattern is formed; separating the transparent polymer layer from the first substrate, the transparent polymer layer having a convex-concave surface formed by the convex-concave pattern of the first substrate transferred thereonto; depositing a metal thin film on the convex-concave surface; forming a viscous film on a second substrate; disposing the transparent polymer layer on the second substrate such that the viscous film and metal thin film are partially bonded together; and separating the transparent polymer layer from the second substrate such that a portion of the metal thin film bonded to the viscous film is removed, wherein a metal thin film pattern having the portion of the metal thin film removed therefrom is formed on the convex-concave surface.

Abstract: A system for surveying audience ratings in real-time in an Internet protocol TV (IPTV) network and a method thereof are provided. The system for surveying audience ratings in real-time includes an electronic program guide (EPG) server providing channel information and audience rating survey server information to an IPTV client; the IPTV client outputting periodically reception information including channel and subscriber information, the channel being received after being selected based on the channel information; and an audience rating survey server surveying audience ratings based on the reception information. According to the system and method, the addition of any information in a broadcasting stream is not required for an audience rating survey, additional devices are not requested to be installed in the houses of viewers or listeners, and without the necessity of their cooperation, audience ratings can be automatically performed in real-time.

Abstract: An interactive advertisement system and a method thereof are provided. The interactive advertisement system includes an advertiser server, a local advertisement server, and a service receiver. The advertiser server requests registration of advertisement information by setting advertisement ID including target service areas and provides services in response to an order of available services corresponding to the advertisement information. The local advertisement server stores and registers the advertisement information including the advertisement ID corresponding to the registration request of the advertiser server, multicasts the registered advertisement information with the advertisement ID through an IP network, and transmits information related to a service request to the advertiser server.

Abstract: There are provided a nitride semiconductor light emitting device and a method of manufacturing the same, the device including: a first conductivity type nitride semiconductor layer formed on a substrate; an active layer formed on the first conductivity type nitride semiconductor layer; a second conductivity type nitride semiconductor layer formed on the active layer; a light-transmitting low refractive index layer formed on the second conductivity type nitride semiconductor layer, the light-transmitting low refractive index layer having a plurality of openings through which the second conductivity type nitride semiconductor layer is partially exposed and formed of a material having a refractive index lower than a refractive index of the second conductivity type nitride semiconductor layer; and a high conductivity ohmic contact layer formed on the light-transmitting low refractive index layer and connected to the second conductivity type nitride semiconductor layer through the openings of the light-transmittin

Abstract: Provided are a method for providing contents information in a video on demand (VOD) service and a VOD service system implemented with the same. The VOD service system includes a transmitting unit, a contents storing par, a contents producing unit, and a controlling unit. The transmitting unit receives a VOD service request from a VOD client through a network and transmits data corresponding to the request to the VOD client. The contents storing unit stores moving picture contents to be provided. The contents producing unit produces representative moving pictures each for the corresponding moving picture content and configures an initial screen obtained by combining the representative moving pictures together. The controlling unit transmits the initial screen including the representative moving pictures of the individual moving picture contents when the VOD client makes a request to provide a list of the moving picture contents to be provided through the transmitting unit.

Abstract: A method of determining timing skew between data outputs of a memory device can include writing a predetermined data pattern to a memory device at a first operational frequency that is less than a normal operational frequency used to write non-predetermined data to the memory device. The memory device is read to output the predetermined data pattern therefrom at a second operational frequency that is greater than the first operational frequency and about equal to a normal operational frequency used to read non-predetermined data from the memory device. Timing skew is determined between outputs from the memory device based on the actual time when the predetermined data is provided from the memory device.

Abstract: A method of determining timing skew between data outputs of a memory device can include writing a predetermined data pattern to a memory device at a first operational frequency that is less than a normal operational frequency used to write non-predetermined data to the memory device. The memory device is read to output the predetermined data pattern therefrom at a second operational frequency that is greater than the first operational frequency and about equal to a normal operational frequency used to read non-predetermined data from the memory device. Timing skew is determined between outputs from the memory device based on the actual time when the predetermined data is provided from the memory device.

Abstract: An Internet protocol (IP)-based integrated customized broadcast service system and method are provided. The IP-based integrated customized broadcast service system includes: a subscriber schedule table providing server generating a subscriber schedule table matching with a time when a user desires to be provided with a broadcast program or IP-based content; and a broadcast server transmitting the broadcast program to the user who desires to be provided with the broadcast program or converting the IP-based content to a broadcast service format that can be watched by the user and transmitting the converted IP-based content to the user who desires to be provided with the IP-based content according to the subscriber schedule table. Accordingly, video on demand (VoD) content, user created content (UCC), and proteur created content (PCC) can be used for broadcasting, so that a variety of broadcast programs can be configured.

Abstract: A semiconductor device that includes a clock buffer, which generates an internal clock signal in response to a clock signal and a complementary clock signal if the semiconductor device is operating in a first mode and generates the internal clock signal in response to the clock signal and a reference voltage if the semiconductor device is operating in a second mode.

Abstract: Provided is a method of transmitting and receiving a two-way advertisement. The method is performed separately from a broadcasting being received by a client. When the client calls for the two-way advertisement, an Internet Protocol (IP)-based two-way advertisement receiving apparatus of the client requests and receives the two-way advertisement from an IP-based two-way advertisement server; stores the two-way advertisement in an advertisement storage unit, wherein the two-way advertisement is transmitted from the IP-based two-way advertisement server which refers to an advertisement area code included in the two-way advertisement and transmits the two-way advertisement by using a multicast group address corresponding to the advertisement area code; and displays the two-way advertisement on a screen of a client using terminal of the client.

Abstract: Provided are an apparatus and method for managing customized channels in Internet Protocol (IP)-based broadcasting services.

Abstract: There is provided a user device for providing customized contents, including: a data receiving unit for receiving user multimedia data from outside; an authoring information setting unit for setting user authoring information on the user multimedia data upon a user's request; a data encoding unit for encoding the user multimedia data and the user authoring information to generate contents data; a data transmission unit for transmitting the generated contents data to a customized contents authoring device through a network; a data receiving unit for receiving authorized data transmitted from the customized contents authoring device; and a data output unit for extracting the customized contents data from the received customized data and outputting the extracted contents data.

Abstract: A personal-ordered multimedia data search service method and apparatuses thereof are provided.

Abstract: A synchronous semiconductor memory device includes an output control signal generator, which generates an output control signal corresponding to a signal obtained by delaying a read information signal in response to a delay internal clock signal obtained by dividing an internal clock signal by n, first and second sampling signals obtained by delaying the internal clock signal, a first output control clock signal obtained by dividing the internal clock signal by n, and a column address strobe (CAS) latency signal. The synchronous semiconductor memory device also includes a data output buffer, which outputs data by buffering internal data in response to the output control signal and the first output control clock signal.

Abstract: There are provided a semiconductor light emitting device that can be manufactured by a simple process and has excellent light extraction efficiency and a method of manufacturing a semiconductor light emitting device that has high reproducibility and high throughput. A semiconductor light emitting device having a substrate and a lamination in which a first conductivity type semiconductor layer, an active layer, and a second conductivity type semiconductor layer are sequentially laminated onto the substrate according to an aspect of the invention includes a silica particle layer; and an uneven part formed at a lower part of the silica particle layer.

Abstract: A latency signal generating method and a corresponding semiconductor memory device, among other things, are disclosed. Such a method includes: receiving a clock signal for the semiconductor memory device; receiving a mode characterization signal; providing the DQS; and adapting the duration of a preamble state of the DQS according to the mode characterization signal to promote conformance of a strobe state of the DQS with the clock signal.

Abstract: A latency signal generating method and a corresponding semiconductor memory device, among other things, are disclosed. Such a method includes: receiving a clock signal for the semiconductor memory device; receiving a mode characterization signal; providing the DQS; and adapting the duration of a preamble state of the DQS according to the mode characterization signal to promote conformance of a strobe state of the DQS with the clock signal.

Abstract: A system and method for providing an interactive multimedia service to a user in an access network are provided. The system includes a multimedia service providing server and a user terminal. The multimedia service providing server creates multimedia information requested by a user terminal, processes the created multimedia information, and manages a corresponding communication channel to allow a predetermined user terminal to receive the processed multimedia information. The user terminal transmits inputted user multimedia information to the multimedia service providing server through the access network and receives the multimedia information transmitted from the multimedia service providing server through the access network.

Abstract: Provided are a circuit and method for sampling a valid command using a valid address window extended for a high-speed operation in a double pumped address scheme memory device. A method for extending the valid address window includes: inputting a valid command signal and a first address signal at the first cycle of a clock signal; inputting a second address signal at the second cycle of the clock signal; generating a decoded command signal and extended first and second internal address signals respectively in response to the command signal and the address signals; and latching and decoding the extended first and second internal address signals in response to the decoded command signal.