Network terminal operated by downloadable operating system and operating method thereof
A network terminal operated by a downloadable operating system is provided. In the network terminal, a power supply supplies a power to an element of the network terminal, a nonvolatile storage medium stores a basic input/output system (BIOS) that automatically operates upon the supplying of the power, a controller is initialized by the operation of the BIOS in order to enable a connection between the network terminal and a host computer and to enable a download of a terminal operating system (OS) from the host computer to the network terminal, and a volatile storage medium stores the terminal OS downloaded from the host computer.
1 . A network terminal operated by a downloadable operating system, comprising:
a power supply for supplying a power to an element of the network terminal;
a nonvolatile storage medium for storing a basic input/output system (BIOS) that automatically operates upon the supplying of the power;
a controller to be initialized by the operation of the BIOS in order to enable a connection between the network terminal and a host computer and a download of a terminal operating system (OS) from the host computer to the network terminal; and
a volatile storage medium for storing the terminal OS downloaded from the host computer.
2 . The network terminal according to claim 1 , further comprising:
a communication part to be connected with the host computer, for transmitting/receiving a data to/from the host computer;
an encoder for encoding the received data; and
at least one input/output port to which at least one user interface is connected.
3 . The network terminal according to claim 1 , wherein the nonvolatile storage medium is a ROM or a flash memory and the capacity of the nonvolatile storage medium is 512 KB or less for storing the BIOS.
4 . The network terminal according to claim 1 , wherein the controller is implemented with a programmable SoC (system on a chip) instead of a CPU (central processing unit).
5 . The network terminal according to claim 4 , wherein the controller implemented with the SoC is re-initialized by the terminal OS stored in the volatile storage medium.
6 . The network terminal according to claim 1 , wherein the volatile storage medium is used as a working memory and is implemented with an 8-MB RAM or less.
7 . The network terminal according to claim 1 , wherein each of the network terminal and the host computer is assigned a unique IP address to identify each other, for the connection therebetween.
8 . The network terminal according to claim 1 , wherein the nonvolatile storage medium stores a program enabling the network terminal to have a unique IP address.
9 . The network terminal according to claim 2 , wherein the at least one user interface includes a monitor, a keyboard, a mouse, a speaker, a microphone, a touch screen, a remote control, or other interfaces using a USB port, a serial port or a memory slot.
10 . A method of operating a network terminal with a downloadable operating system, comprising the steps of:
supplying a power to a network terminal;
checking the network terminal and initializing a controller of the network terminal by using a BIOS of the network terminal that is automatically executed upon the supplying of the power;
connecting the network terminal with a host computer through a network and downloading a terminal OS from the host computer to the network terminal, under control of the initialized controller;
storing the downloaded terminal OS in a volatile storage medium; and
performing a network terminal user's manipulation at the host computer and transmitting a corresponding result from the host computer to the network terminal.
11 . The method according to claim 10 , further comprising the step of re-initializing the controller with the terminal OS stored in the volatile storage medium prior to the step of performing a network terminal user's manipulation at the host computer.
12 . The method according to claim 11 , wherein the controller is implemented with a programmable SoC instead of a CPU.
13 . The method according to claim 10 , further comprising the step of running the host computer and connecting the host computer on the network prior to the step of supplying a power.
14 . The method according to claim 13 , wherein the host computer is provided with the terminal OS for an operation of the terminal network as well as an OS for its operation.
15 . The method according to claim 10 , wherein each of the network terminal and the host computer is assigned a unique IP address to identify each other, for the connection therebetween.
16 . The method according to claim 10 , wherein the step of performing the user's manipulation includes the steps of:
transmitting a screen background of the host computer in the form of a bitmap image to the network terminal and displaying the transmitted screen background on a monitor of the network terminal; and
executing an application program of the host computer according to the network terminal user's manipulation, transmitting a result of the execution in the form of a bitmap image to the network terminal, and displaying the transmitted bitmap image on the monitor of the network terminal.
17 . The method according to claim 16 , wherein each of the bitmap images is a 8 bit format or 16 bit format bitmap image and a simple authentication procedure is optionally employed at either step of transmitting the bitmap image.
18 . The method according to claim 16 , wherein display area and colors of the monitor are adjustable upon a user's demand.