Computer graphics processing and selective visual display system – Plural display systems – Remotely located
Reexamination Certificate
1998-06-30
2001-02-20
Wu, Xiao (Department: 2774)
Computer graphics processing and selective visual display system
Plural display systems
Remotely located
C345S211000
Reexamination Certificate
active
06191758
ABSTRACT:
CLAIM OF PRIORITY
This application makes reference to, incorporates the same herein, and claims all benefits accruing under 35 U.S.C §119 from an application entitled
Computer Having Auxiliary Display Device
earlier filed in the Korean Industrial Property Office on Jun. 30, 1997, and there duly assigned Ser. No. 97-29329 by that Office.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a computer, and more particularly, to a computer having an auxiliary display device which enables a user to work more effectively by including an auxiliary display device as well as a main display device.
2. Description of the Related Art
A conventional computer includes a computer body, input devices such as a key board, and one display device. Since the conventional computer has one display device, multitasking operation requires a screen division of the display device or several windows. Also, since a screen size of the display device is limited, according to circumstances, a user often feels uncomfortable to work even when the number of displayed windows is one.
For example, in the case that a calculator application program is used during performing a program such as a word processor or a spread sheet, a window should be moved or set by an active or inactive state in every operation.
Accordingly there is a need to provide a computer having an auxiliary display device which enables a user to work more effectively by including an auxiliary display device as well as a main display device. Conventional computer systems having more than one display device are depicted by U.S. Pat. No. 5,138,305 to Yuichi Tomiyasu entitled
Display Controller
; U.S. Pat. No. 5,150,109 to Wayne F. Berry entitled VGA
Controller Card
; U.S. Pat. No. 5,293,485 to Zenda entitled
Display Control Apparatus For Converting Color/Monochromatic CRT Gradation Into Flat Panel Display Gradation
; U.S. Pat. No. 5,307,055 to Herbert B. Baskin entitled
Display Control Device Incorporating An Auxiliary Display
; and U.S. Pat. No. 5,694,141 to Lawrence Chee entitled
Computer System With Double Simultaneous Displays Showing Differing Display Images
. Of the foregoing, it appears that only the U.S. Pat. No. 5,694,141 patent is capable of displaying different images simultaneously on separate display devices.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a computer having an auxiliary display device which enables a user to work more effectively by including an auxiliary display device as well as a main display device.
It is another object of the present invention to provide a display method of the execution result of an application program for a computer having an auxiliary display device which enables a user to work more effectively by including an auxiliary display device as well as a main display device.
To accomplish the first object of the present invention, there is provided a computer having an auxiliary display device including an input device for inputting user's commands, a computer body for performing a predetermined program according to the commands input to the input device, a main display device for displaying signals output from the computer body on a screen, and an auxiliary display device for displaying the signals output from the computer body on a screen together with the main display device, wherein the computer body includes a main display controller for controlling the main display device and an auxiliary display controller for controlling the auxiliary display device, and after booting when a power supply of the computer body is turned on, the computer body executes a predetermined application program, and displays the execution result thereof on the auxiliary display device through the auxiliary display controller.
Preferably, after a predetermined application program is executed, the computer body performs the steps of: a) checking display selection information of the application program or a user, to determine whether the main display device is selected or the auxiliary display device is selected; b) when it is determined that the main display device is selected in the step a), displaying the execution result of the application program on the main display device through the main display controller; and c) when it is determined that the auxiliary display device is selected in the step a), displaying the execution result of the application program on the auxiliary display device through the auxiliary display controller.
To accomplish the first object of the present invention, there is also provided a computer having an auxiliary display device including an input device for inputting user's commands, a computer body for performing a predetermined program according to the commands input to the input device, a main display device for displaying signals output from the computer body on a screen, and an auxiliary display device for displaying the signals output from the computer body on a screen together with the main display device, wherein the computer body includes a display controller for controlling the main display device and the auxiliary display device, and after booting when a power supply of the computer body is turned on, the computer body executes a predetermined application program, and displays the execution result thereof on the auxiliary display device through the auxiliary display controller.
Preferably, the display controller includes a graphic controller for receiving data from a bus to process a predetermined function, a main graphic memory for storing the data output from the graphic controller, a first data serializer for receiving data output from the main graphic memory to convert it to a serial bit stream, a first attribute controller for receiving data output from the first data serializer and then converting it to appropriate color data, to output the converted color data to the main display device, an auxiliary graphic memory for storing the data output from the graphic controller, a second data serializer for receiving data output from the auxiliary graphic memory to convert it to a serial bit stream, a second attribute controller for receiving data output from the second data serializer and then converting it to appropriate color data, to output the converted color data to the auxiliary display device, a sequencer for generating clocks in a unit of a pixel or a character and controlling a sequence of all functions of the display controller, to generate read clocks and write clocks of the main graphic memory and the auxiliary graphic memory, a main display controller for generating signals related to timing to control the main display device, and an auxiliary display device for generating signals related to timing to control the auxiliary display device.
Preferably, the auxiliary graphic memory includes first and second auxiliary graphic memories.
Preferably, when a power supply of the computer body is turned on, the computer body performs a predetermined application program, and displays the execution result thereof through the graphic controller of the display controller and the first auxiliary graphic memory.
Preferably, when a predetermined application program is executed, the computer body performs the steps of: a) checking display selection information of the application program or a user, to determine whether the main display device is selected or the auxiliary display device is selected; b) when it is determined that the main display device is selected in the step a), displaying the execution result of the application program on the main display device through the graphic controller and the main graphic memory; c) when it is determined that the auxiliary display device is selected in the step a), enabling the second auxiliary graphic memory through the graphic controller; d) displaying the execution result of the application program on the auxiliary display device through the second auxiliary graphic memory; e) checking whether the application program is terminated, and if not, returning to the st
Bushnell , Esq. Robert E.
Samsung Electronics Co,. Ltd.
Wu Xiao
LandOfFree
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