Computer graphics processing and selective visual display system – Display driving control circuitry – Display power source
Reexamination Certificate
2000-06-19
2002-07-02
Chow, Dennis-Doon (Department: 2775)
Computer graphics processing and selective visual display system
Display driving control circuitry
Display power source
C713S321000, C713S324000, C710S014000
Reexamination Certificate
active
06414675
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a personal computer (PC) system with an autonomous CD circuit. More specifically, a PC system having a program that is activated and controlled using a CD control panel of the CD circuit is disclosed.
2. Description of the Prior Art
Recently, laptop computer systems with autonomous CD players have come onto the market. The “Toshiba PC” notebook computer from Toshiba is such an example. These computers enable a user to listen to a CD, using the built-in CD drive of the computer, when the other circuitry of the computer, i.e., the processor, memory and display circuitry, is turned off. In this mode, the PC system functions somewhat like a large portable stereo system.
Please refer to
FIGS. 1 and 2
.
FIG. 1
depicts a prior art laptop PC system
10
with an autonomous CD player, as described above.
FIG. 2
is a functional block diagram of the PC system
10
. Of relevance to this invention, the prior art PC system
10
comprises a display
12
, two speakers
14
, a headphone jack
16
, a CD drive
18
, and a CD control panel
20
. Inside the casing of the PC system
10
are also a processor
13
, a memory
15
, a CD playing control circuit
17
, and a power supply
11
, as well as a great deal of other complex circuitry.
The power supply
11
provides electrical power to all of the components of the laptop PC system
10
, and during portable operations is usually a battery, or a plurality of batteries. The CD playing control circuit
17
is electrically connected to both the CD control panel
20
and the CD drive
18
. The CD drive
18
, in turn, is electrically connected to both the headphone jack
16
and the speakers
14
. When electrical power is turned off to all other components of the PC system
10
, the power supply
11
may still deliver power to the CD drive
18
and the CD playing control circuit
17
. The CD playing control circuit
17
controls the operations of the CD drive
18
and can itself be controlled by a user via the CD control panel
20
. Even though the computing and display portions of the laptop PC system
10
are turned off, the user can still listen to a CD. As in a portable stereo device, play, track forward, track review and stop buttons on the CD control panel
20
permit a user to listen to a CD in the CD drive
18
, using either the speakers
14
or headphones
22
plugged into the headphone jack
16
.
The above design was invented because many users were using their laptop computers as highly complex personal stereo systems. Consequently, it became clear that a great deal of battery life was being wasted on processor and display systems that weren't being utilized. The user simply didn't need the processor
13
and the relatively power-hungry display
12
to exclusively listen to a CD. The dedicated CD playing control circuit
17
, and the associated CD control panel
20
would suffice for dedicated playing needs. This prior art design greatly extended battery operational time, and hence the number of CDs to which a user could listen.
Unfortunately, this prior art design has a simple draw-back: if a user does wish to use a program on the laptop PC system
10
, the computing-related portions of the laptop PC system must be turned on. In doing so, the user must wait through a lengthy booting procedure. This booting procedure is also wasteful of battery power. This can be frustrating, as a user frequently may wish to perform a relatively simple task, such as setting a timer or an alarm clock.
SUMMARY OF THE INVENTION
It is therefore a primary objective of this invention to provide an embedded controller in a PC system that, upon a predetermined control signal from a CD control panel, will cause the processor and display to turn on, and cause the processor to run an embedded display program.
The present invention, briefly summarized, discloses a personal computer (PC) system with a CD drive, a CD playing control circuit, an embedded controller, a CD control panel and an embedded display program contained within the Basic Input Output System (BIOS) of the memory of the computer. With the CD drive, the CD playing control circuit and the CD control panel, a user can listen to a CD when the computing and display portions of the PC system are turned off. However, upon a predetermined control signal from the CD control panel, the embedded controller will turn on both the processor and the display of the PC system, and cause the processor to begin executing the embedded display program.
It is an advantage of the present invention that no lengthy booting procedure is required to begin executing the embedded display program. Consequently, a user suffers no inconvenience to run the program. Moreover, by avoiding the computer booting process, power is conserved, which extends the operational time of the battery.
These and other objectives of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment, which is illustrated in the various figures and drawings.
REFERENCES:
patent: 5978923 (1999-11-01), Kou
patent: 6006285 (1999-12-01), Jacobs et al.
patent: 6073187 (2000-06-01), Jacobs et al.
patent: 6116767 (2000-09-01), Chaiken et al.
Chi Mei Optoelectronics Corporation
Chow Dennis-Doon
Hsu Winston
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