摘要:
A method for assigning conditional access system (CAS) keys to a terminal to thus reduce the number of entitlement management messages (EMMs) required to send contents to a digital broadcast subscriber. To this end, a broadcast center causes transmission of the CAS-related key to limit access to the digital content, over a mobile communication network used for a mobile communication, and causes transmission of the digital content over a digital broadcasting network used for digital broadcasts. Since the CAS-related key is transmitted to the digital broadcast subscriber's terminal over the mobile communication network, it is possible to effectively utilize the frequency bandwidth of the digital broadcasting network for the digital broadcasting. Furthermore, the security of the CAS-related key can be strengthened by sending the CAS-related key to the terminal over the mobile communication network.
摘要:
A control device authentication method in a home network system which includes a slave, a home server which controls the slave, and the control device which performs a remote control function to control the home server, includes registering the control device to the home server; generating and storing, by the control device and the home server, a one-way function set; storing, by the control device and the home server, a code value of a button pressed at the control device; creating, by the control device, a first password by performing an operation using a pointer value, the code value, and a one-way function number; requesting, by the control device, authentication by transferring the pointer value, the one-way function number, and the first password to the home server; and creating, by the home server, a second password.
摘要:
A method for providing a single-frequency network (SFN) service between a base station (BS) and a mobile station (MS) in a wireless communication system. The BS sets a first segment indicator in a medium access control (MAC) message field before transmission, if a resource allocation scheme corresponds to general data transmission. The BS sets a second segment indicator in the MAC message before transmission, if the resource allocation scheme corresponds to single frequency-based data transmission. The MS receives the MAC message from the BS, and performs renumbering according to the first segment indicator or the second segment indicator included in the received MAC message.
摘要:
A method of manufacturing a monolithic inkjet printhead wherein the uniformity of the ink flow path is maintained by ensuring that the flow path forming layer and the nozzle layer are completely adhered to each other. The method includes forming a heater and electrode on a substrate, coating a negative photoresist on the substrate, and patterning the photoresist using a photolithography process to form an flow path forming layer that defines an ink flow path. The method further comprises steps for then forming a sacrificial layer so as to cover the flow path forming layer and then flattening upper surfaces of the flow path forming layer and the sacrificial layer using a chemical mechanical polishing (CMP) process such that when a nozzle layer is then formed, the flow path forming layer and the nozzle layer are completely adhered to each other.
摘要:
An inkjet printhead includes a plurality of heaters connected with an electrode wiring and having a first end connected with a driving electrode, and a chamber pattern forming an ink chamber at each heater. The chamber pattern includes conductive material and forms a common grounding wiring electrically connected with a second end of each heater. Accordingly, the inkjet printhead has nozzles capable of simultaneous injection of ink.
摘要:
A method of manufacturing a monolithic inkjet printhead. The method may include forming on a substrate a heater for heating ink and an electrode for supplying current to the heater, forming a passage forming layer that surrounds an ink passage by applying negative-type photoresist to the substrate and patterning the same, forming a sacrificial layer having a planarized top surface in a space surrounded by the passage forming layer by repeatedly applying a positive-type photoresist to the substrate having the passage forming layer and patterning the same by photolithography at least twice, forming a nozzle layer having a nozzle by applying a negative-type photoresist to the passage forming layer and the sacrificial layer and patterning the same, etching the substrate from the bottom surface thereof to be perforated and forming an ink supply hole, and removing the sacrificial layer. Since the top surface of the sacrificial layer is planarized, the shape and dimension of the ink passage can be easily controlled, thereby improving uniformity of the ink passage.
摘要:
An ink jet head having a channel damper, and a method of fabricating the same. The ink jet head includes a heat-generating resistor disposed on a substrate to generate pressure for ink ejection, a chamber layer disposed on the substrate to enclose the heat-generating resistor and having a first height from the substrate in order to provide at least one opened portion, and a channel damper disposed at the opened portion to completely enclose the heat-generating resistor together with the chamber layer and having a second height lower than the first height is disposed at the opened portion. A nozzle layer having a nozzle corresponding to the heat-generating resistor is disposed to be in contact with an upper surface of the chamber layer.
摘要:
Disclosed are a system and a method of allocating frequency resource in a cellular communication system. The method includes the steps of dividing a predetermined time duration into at least two sub-time durations, and forming the frequency resource by applying mutually different frequency reuse factors to the sub-time durations.
摘要:
Integrated circuit devices are fabricated by fabricating a conductive line on an insulating layer on an integrated circuit substrate. The conductive line includes a bottom adjacent the insulating layer, a top remote from the insulating layer and first and second sidewalls therebetween. An insulating spacer is formed to extend along the first and second sidewalls and to also extend along at least a portion of the bottom between the conductive line and the insulating layer. By providing an insulating spacer beneath at least a portion of the conductive line, insulation reliability may be improved even as the spacer may become narrower and/or the contact area may be enlarged.
摘要:
An inkjet printer head includes a semiconductor wafer having a nozzle portion for ejecting ink, an ink cartridge for supplying ink to the nozzle portion, and an ink ejection unit interposed between the ink cartridge and the semiconductor wafer. A method of forming the printer head includes forming an ink ejection unit having an opening on a semiconductor wafer to expose an upper surface of the wafer, etching the wafer through the opening in the ink ejection unit to form a nozzle in the semiconductor wafer, and attaching an ink cartridge to the upper surface of the semiconductor wafer.