Patent No. 5430493 Manufacturers or users on-screen graphic display upon power-off of a television receiver
Patent No. 5430493
Manufacturers or users on-screen graphic display upon power-off of a television receiver (Kim, Jul 4, 1995)
ASSIGNEE: Samsung Electronics Co., Ltd., Kyungki, Republic of Korea
Abstract
A message displaying method upon power-off of a television is adapted to delay power-off execution for a few seconds while performing an OSD, in which the OSD message is stored in a microprocessor under the control of a designated program of the microprocessor so that a company can transmit advertising messages to the viewer whenever the users power off their televisions.
Notes:
BACKGROUND
OF THE INVENTION
The present invention relates to an on screen display (hereinafter, termed "OSD")
of a television (hereinafter, termed "TV"), and more particularly to, a message
displaying method upon power-off of a television adapted to transmit messages
such as an advertisement by displaying a manufacturer's advertisement as an
OSD or an informational message as an OSD for a few seconds before complete
power-off of the television.
Conventional TVs have a function for displaying the channel state, the fineness
of tuning, and the level of volume and so on, but such a function is limited
to only a power-on state of the television since the OSD function is stopped
with the actuation of the power-off button of the television simultaneously.
U.S. Pat. No. 4,616,261 discloses a general purpose computer having a program
for displaying a subliminal message, the computer being connected separately
to a television and periodically switched on or off for repeated operation to
display the subliminal message during a normal displaying operation of a television
for a short time, thereby obtaining self-recognizing effects. However, such
a system still has a problem in that an informational message or a manufacturer's
advertisement can not be displayed with the already existing OSD of the TVs.
SUMMARY OF THE INVENTION
The present invention overcomes these problems and provides a message displaying
method upon power-off of a television adapted to conveniently transmit a message
such as an advertisement to TV viewers for several seconds when the picture
of the TV is switched off and before the TV power is switched off.
A message displaying method upon power-off of a television according to the
present invention comprises the steps of discriminating whether said television
is in a picture-on mode when said television is turned on, deciding whether
a key of a user's OSD is pressed or not if said television is in said picture-on
mode, setting said user's OSD if said key input for said user's OSD is pressed,
performing normal operations, performing a manufacturer's OSD or said user's
OSD for several seconds if said picture-on mode is not realized in said discriminating
step, and then executing power-off of said television.
Other objects and features of the present invention will become more apparent
from a consideration of the following description which proceeds with reference
to the accompanying drawings in which a selected example embodiment is illustrated
by way of example, and not by way of limitation.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1A and 1B are high and low level schematic diagrams, respectively, showing
the construction of a conventional digital TV;
FIG. 2A and 2B are overall and detailed flow charts, respectively, which are
useful in explaining various steps used in a message upon power-off of a television
according to the present invention; and
FIG. 3 shows a preferred embodiment of displaying a manufacturer's OSD according
to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED
EMBODIMENT
Now, the present invention will be described in detail below with reference
to the appended drawings.
FIG. 1A is a schematic diagram showing the hardware construction of a conventional
digital TV. In such a conventional digital TV, a remote controller receiving
part 20 receives signals from a remote controller and transmits them to a microprocessor
10 and a key matrix 30 provides various function commands and OSD message information
to the microprocessor 10. These are connected to inputs of the microprocessor
10 controlling the system.
On the other hand, an OSD control part 40 is connected to an output of the microprocessor
10, and thus characters and the like are displayed on a cathode ray tube (hereinafter,
termed "CRT") 50 under the control of the microprocessor 10.
The microprocessor 10 controls the OSD control part 40 according to signals
applied from the remote controller receiving part 20 and the key matrix 30 by
the operation of an inner OSD circuit. It will be noted that microprocessor
10 provides control signals to, e.g., a power supply part 11, as shown in greater
detail in FIG. 1B.
The present invention is adapted to add a control program for realizing the
message displaying method of the invention to the conventional TV hardware construction
as described above.
FIG. 2A is a flow chart for explaining the control program according to the
present invention.
The control program according to the present invention comprises a step 110
for discriminating whether or not a TV is receives a control signal corresponding
to a power-off key, a step 120 for deciding whether or not the control signals
correspond to a user's OSD is received when the control signal does not correspond
to the power-off key in the previous step, a step 130 for setting the user's
OSD if pressed in the previous step, a step 140 for performing the normal operation
of the TV subsequently, a step 150 for performing a manufacturer's OSD or the
user's OSD for several seconds if the power-off key is not pressed at the first
step 110, and a step 160 for executing the power-off thereafter.
Now, the operation of a message displaying method upon power-off of a television
according to the present invention will be described.
A manufacturer's OSD or a user's OSD (the user's OSD relates to informational
data of interest to the user) are not performed during the display of a normal
television program, and, at this time, the user can input and store a desired
message, that is, the user can store desired OSD information into a microprocessor
10 via a key matrix 30 for later displaying. This corresponds to steps 120 and
130.
In the case of the manufacturer's OSD, since the OSD character information is
stored into the microprocessor during manufacture, a message input operation
is not required.
As the first stage of the operation, the microprocessor 10 discriminates whether
or not a TV is in its picture "on" state of power "on" by a step 110. That is,
the microprocessor checks to see whether or not a TV picture being displayed
on the screen is being turned off.
The microprocessor 10 next decides whether a key of the user's OSD is pressed
or not at the step 120 if in its picture "on" state (that is, it is checked
whether a user is inputting information to be displayed via the OSD), and accordingly
sets the user's OSD character information input by the step 130 if pressed,
and then performs normal functions of a key which has been pressed by the step
140 if the OSD key is not pressed.
If not in its picture "on" state at the first step 110, that is, if in its picture-off
state at a step 110, the microprocessor 10 delays power-off for several seconds
and provides the user's OSD message or the manufacturer's OSD message, which
has been stored, to a CRT 50 via an OSD control part 40 to display the message.
FIG. 3 shows an example of the manufacturer's OSD display accomplished according
to the present invention. The power-off to the TV is finally performed by the
step 160 after displaying the OSD characters for several seconds, thereby completing
the program.
In performing the method of the present invention, the user can easily input
the OSD message by utilizing the general remote controller, and the pre-stored
manufacturer's OSD can contain an advertisement of the product, or a trademark
so as to greatly save on advertisement costs and to obtain an advertisement
effect without selling the products.
Further, if the user's OSD includes information necessary to carrying out home
affairs, the user can receive the OSD message from a CRT while watching a TV,
thereby repeatedly reminding the user of easily forgettable information.
Thus according to a message displaying method upon power-off of a television
of the invention, a company can transmit advertising messages and the like to
TV viewers without separate cost every time the user turns the power switch
off, obtaining an advertisement effect continuously, while a user can obtain
a continuously reminding effect for important information.
In the case that the present invention is applied to a monitor of a personal
computer, information concerning the upkeep and maintenance of the monitor or
a user's schedule of work can be displayed.
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The present invention is no way limited
to the embodiment described hereinabove. Various modifications of disclosed
embodiment of the present invention will become apparent to persons skilled
in the art upon reference to the description of the present invention. Therefore,
the appended claims will cover any such modifications or embodiments as fall
within the true scope of the present invention.
Comments