摘要:
A package system for integrated circuit (IC) chips and a method for making such a package system. The method uses a solder-ball flip-chip method for connecting the IC chips onto a lead frame that has pre-formed gull-wing leads only on the source/gate side of the chip. A boschman molding technique is used for the encapsulation process, leaving exposed land and die bottoms for a direct connection to a circuit board. The resulting packaged IC chip has the source of the chip directly connected to the lead frame by solder balls. As well, the drain and gate of the chip are directly mounted to the circuit board without the need for leads from the drain side of the chip.
摘要:
An organic thin film transistor and a flat panel display device using the same are disclosed. The organic thin film transistor includes an inorganic layer doped with an impurity in a region of the outer surfaces of source and drain electrodes, or the source and drain electrodes is formed by an inorganic material doped with an impurity. According to the organic thin film transistor, an energy barrier is generated when contact between the organic semiconductor and the source and drain electrodes is removed to form an ohmic contact.
摘要:
A method for handoff between packet data serving nodes (PDSNs) The method for handoff between packet data serving nodes (PDSNs) provides packet services to a mobile node. A new PDSN receives subscriber information of a mobile node from at least one or more old PDSNs forming a communications network. The new PDSN recognizes the mobile node moving into a concerned area of the new PDSN and then transmits recognition information on the mobile node to an old PDSN to which the mobile node was connected. All received information on the mobile node is transmitted by the old PDSN based on the recognition information. A communication channel is established with the mobile node based on the received information. In the method, handoff is performed without reestablishing PPP. Accordingly, handoff between PDSNs can be performed faster, reducing the time needed for establishing a PPP session with a terminal and for terminating a previously set up PPP session.
摘要:
The present invention relates to a method for transmitting and receiving informations of control plane using MAC frame structure in order to transmit user data through associated control channel so that the radio resource formed between a mobile station and a base station can be used efficiently, in the case that the third generation mobile communication system which needs large scale control information necessarily uses out-of-band signal method for providing various services. The method for transmitting and receiving information between mobile station and base station of mobile communication system using an associated channel comprise the steps of receiving information from user plane and control plane, constructing a frame, and transmitting the frame which is pointed out by the plane determined by the corresponding information after analyzing the information (step 1); and analyzing the frame after receiving the information through the associated channel and receiving the information using the plane corresponding to the frame (step 2).
摘要:
The present invention relates to a method and apparatus of a forward traffic channel power control for a code division multiple access (CDMA) wireless local loop system not having a hand-off function. The present invention distinguishes between a normal mode and a threshold mode in a CDMA wireless local loop. Here, the total power is lower than a predetermined power threshold value in the normal mode, and the total power arrives at the predetermined power threshold value in the threshold mode. In addition, the present invention varies method of increasing/reducing the forward traffic channel power according to the determined mode. As a result, method and apparatus according to the present invention effectively reduces the forward link interference signal at nearby cells, and provides a proper traffic quality.
摘要:
An improved overload control method using a call control process load ratio of a CDMA mobile system which is capable of which is capable of controlling a paging, a signal transmission, and an overload by a signal transmission and receiving by their threshold values by computing an average load ratio of a process and a variable permission ratio at the time of overload using the current CPU occupying ratio and a load ratio of a call control process, which includes the steps of a first step for judging as to whether an overload is loaded by calling an overload judgement procedure when a timer of an overload control process is driven in accordance with a generation of a periodical process of an operating system; a second step for controlling an overload by calling the overload control procedure when it is judged as an overload as a result of the first step; and a third step for releasing the overload state by calling an overload release procedure when the previous state is an overload state by checking the previous state when it is judged that it is not an overload state as a result of the call in the first step.
摘要:
A device and method for allocating channels from a base station to a mobile station run with a CDMA Cellular System that includes a first step for measuring the strength of a signal received, a second step for calculating the margin allowed for signal strength by subtracting the size of a signal received, measured in the first step from the total interference allowed, a third step for evaluating whether the margin calculated in the previous step has not been exceeded upon receiving a new radio channel request from a mobile station, and a fourth step for allocating a radio channel to a requesting mobile station when the evaluation result shows that the required power is less than the margin. By utilizing the present invention to allocate a radio channel in accordance with the strength of a signal received by the receiving unit of the Base Station, the utilization of the radio resources of a CDMA System can be maximized and they can be easily used, and as a result, economic CDMA system services can be ensured.
摘要:
A method of sharing a wireless data service, including receiving, by a first terminal, a wireless data service share request from a second terminal, checking, by the first terminal, available wireless data service remaining amount information, and transmitting, by the first terminal, a response to the wireless data service share request to the second terminal based on the checked wireless data service remaining amount information. Another such sharing method includes requesting, by a second terminal, wireless data service remaining amount information available by a first terminal from the first terminal, transmitting, by the second terminal, a wireless data service share request to the first terminal based on the wireless data service remaining amount information received from the first terminal, and receiving, by the second terminal, a response to the wireless data service share request from the first terminal.
摘要:
An organic light emitting display device including a flexible substrate and a plurality of thin film transistors (TFTs) formed on the substrate. The plurality of TFTs formed on the substrate include a pixel transistor for driving a pixel and a driver circuit transistor for driving a driver circuit, and a longitudinal direction of a channel region of the pixel transistor makes a first predetermined angle with a direction in which the substrate is bent. As such, it is possible to minimize a change in the electrical property of the TFTs formed on the flexible substrate and to thus reduce a change in the amount of current that flows in the channels of the TFTs.
摘要:
A method and apparatus for teaching the rudiments of banking and for teaching the importance of savings. The apparatus of the invention, which comprises a modified banking establishment that includes a specially designed children's teller window that is easily accessible by children, includes a specially designed savings book that can be used by children in depositing monies into and withdrawing monies from the banking establishment. Additionally, the apparatus includes a publication describing in simple terms the way banks operate and the type of services they provide, and a plurality of prizes that can be awarded to a child upon the child achieving certain predetermined savings goals.