KR20030026521A - Personal Digital Assistants - Google Patents

Abstract

PURPOSE: A PDA(Personal Digital Assistant) is provided to perform a simultaneous data communication using both the wireless LAN card and the CDMA modem by using a PCMCIA(Personal Computer Memory Card International Association) slot and a mini PCI(Peripheral Component Interconnect) bus. CONSTITUTION: The device comprises a microprocessor module(10), a local bus(20) and a wireless LAN card(110). The microprocessor module(10) includes a microprocessor(11), a RAM(12), and a memory(13). The local bus(20) connects the wireless LAN card(110) to the microprocessor(11). The wireless LAN card(110) is connected to the local bus(20) via a mini PCI type connector which comprises a PCI bridge(121) and a PCI bus(122). Also, a PCMCIA bus(131) is connected to the microprocessor(11) and a PCMCIA slot(132) being connected to the PCMCIA bus(131).

Description

Personal Digital Assistants {Personal Digital Assistants}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a personal information terminal, and more particularly, to a personal information terminal that can easily implement data communication through the Internet and a private network and can expand its function.

Personal Digital Assistants (PDAs) are a type of portable computer that can enter handwritten information. Personal digital assistants, like electronic notebooks, can exchange information with a desired counterpart without restriction of personal information management or schedule management, using a global wireless communication network such as packet radio or cellular packet data, or by using a modem. It has a function.

Conventionally, in order to perform data communication through the Internet and a private network using a personal information terminal, a method of connecting to a personal computer using a USB (Universal Serial Bus) port and connecting an expansion slot for communication to the personal information terminal separately A method of mounting a local area network (LAN) card in the expansion slot has been used.

However, the method of using the USB port is inconvenient to download the data to the personal computer (Down Loading) and then transfer the downloaded data from the personal computer to the personal information terminal through the USB port.

In order to use a separate communication expansion slot, a communication expansion slot must be purchased separately, the volume of a personal digital assistant is increased, and only one communication expansion slot can be connected to a currently used personal digital assistant. Access) There is a problem that can not communicate by using a modem at the same time.

Accordingly, an object of the present invention is to provide a personal information terminal capable of implementing data communication with a small volume and a minimum cost.

In addition, another technical problem to be achieved by the present invention is to provide a personal information terminal that can easily implement data communication through the Internet and a private network and communication using a device connected to an expansion slot at the same time and can expand the function.

1 is a block diagram illustrating a personal information terminal according to the present invention.

In accordance with another aspect of the present invention, there is provided a personal information terminal comprising: a personal information terminal having a microprocessor connected to a local bus, a RAM, and a memory; It is characterized in that the LAN card is provided.

At this time, the local bus and the wireless LAN card is preferably connected using a mini PCI bus structure.

According to another aspect of the present invention, there is provided a personal information terminal comprising: a personal information terminal having a microprocessor connected to a local bus, a RAM, and a memory, and a microprocessor module configured to be connected to the local bus. A wireless LAN card; A PCMCIA bus coupled with the microprocessor; And a PCMCIA slot connected to the PCMCIA bus.

At this time, the local bus and the wireless LAN card is preferably connected using a mini PCI bus structure.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

1 is a block diagram illustrating a personal information terminal according to the present invention.

Referring to FIG. 1, the personal information terminal 100 includes a microprocessor 11 connected with a local bus 20, a RAM 12, and a microprocessor module 10 including a memory 13. The LAN card 110 is connected to the local bus 20 so as to be connected to the microprocessor 11 and embedded in the personal information terminal 100.

Although not shown, generally, the personal information terminal 100 includes a touch screen controller, a universal asynchronous receiver / transmitter (UART), a universal serial bus (USB) port, and the like. It is connected and installed. In addition, an LCD (Liquid Crystal Display) controller is installed in connection with the local bus 20, an LCD and an audio codec are connected to the LCD controller, and a terminal for using a microphone, earphone, speaker, etc., for the audio codec. Is connected.

The wireless LAN card 110 and the local bus 20 are connected using a Peripheral Component Interconnect (PCI) bus structure and an ISA (Industry Standard Architecture) bus structure. The PCI bus structure is a completely different bus structure from the existing ISA bus structure and is a bus structure for high speed processors. The ISA bus architecture allows expansion slots to connect directly to the microprocessor to exchange data with peripheral interfaces. However, the PCI bus structure is a bus structure in which a bridge organizes data flow because a bridge is installed between the microprocessor and an external bus to arrange data flow. In other words, the microprocessor exchanges data for the bridge, which in turn exchanges data with the external interface.

In particular, the Mini PCI bus structure is a mobile-based PCI protocol for improving the performance of notebook computers, while greatly reducing the size while retaining the performance of the desktop PCI bus.

In this embodiment, the wireless LAN card 110 and the local bus 20 are connected through a mini PCI type connector. Here, the mini-PCI type connector includes a PCI bridge 121 to be connected to the local bus 20 and a PCI bus 122 connected to the PCI bridge 121. The wireless LAN card 110 is connected to the local bus 20 by being connected to the PCI bus 122. In the present embodiment, a wireless LAN card and a mini PCI type connector have been described separately, but these constitute a single mini PCI type WLAN card module.

As such, the size and thickness of a personal information terminal capable of data communication can be reduced by connecting a wireless LAN card and a local bus using a mini PCI type connector. And, even without a separate expansion pack, data communication is possible with an access point where a wireless IP (Internet Protocol) environment is established, and other terminal devices constituting Internet communication and a private network, for example, a personal computer or a notebook computer. Communication is possible.

On the other hand, a personal computer memory card international association (PCMCIA) bus 131 is connected to the microprocessor 11, and a PCMCIA slot 132 is connected to the PCMCIA bus 131.

PCMCIA is an international memory card standard that expands the function by inserting peripheral devices in the form of a card. The PCMCIA has the advantage of maintaining the expandability of the expansion slot while maintaining the portability of the device in which the PCMCIA slot is installed. For example, simply by inserting a modem card into the PCMCIA slot 132, Internet communication can be performed, and CDMA communication or video communication can be performed by connecting a CDMA modem or a camera to the PCMCIA slot 132. have. Further, by connecting and using a device such as a barcode scanner to the PCMCIA slot 132, it is possible to extend the function of the personal information terminal.

Therefore, CDMA communication or video communication can be simultaneously performed during data communication via the Internet or a private network using the wireless LAN card 110.

As described above, according to the personal information terminal of the present invention, the size and thickness of the personal information terminal capable of data communication can be reduced by connecting the wireless LAN card and the local bus using a mini PCI bus connector, which is convenient for the personal information terminal. Provide performance simplicity.

In addition, data communication is possible without a separate expansion pack, so there is no additional cost.

Furthermore, by further providing a PCMCIA slot, CDMA communication or video communication can be performed using various devices that can be connected to the PCMCIA slot simultaneously with data communication through the Internet or a private network using a wireless LAN card. Can be extended

The present invention is not limited to the above embodiments, and it is apparent that many modifications are possible by those skilled in the art within the technical spirit of the present invention.

Claims (3)

A personal information terminal having a microprocessor module connected to a local bus, a RAM, and a memory, comprising: Personal information terminal, characterized in that provided with a wireless LAN card connected to the local bus. The personal information terminal of claim 1, wherein the local bus and the wireless LAN card are connected using a mini PCI bus structure. 3. The system of claim 1 or 2, further comprising: a PCMCIA bus coupled with the microprocessor; Personal information terminal, characterized in that the PCMCIA slot is further connected to the PCMCIA bus.