KR20040063568A - Projection display system for operating according to a state of a door and method thereof - Google Patents

Abstract

PURPOSE: A projection image display system operated according to the state of a door and a method therefor are provided to sense that a user enters the door and automatically turn on a lamp of a television. CONSTITUTION: An entrance signal sensing device(100) has a sensor unit(102) and a signal transmitting unit(104). The sensor unit(102) senses opening and closing states of a door. The signal transmitting unit(104) transmits a sensing signal sensed in the sensor unit(102) to a projection television(110). The projection television(110) has a lamp unit(116), a signal receiving unit(112) and a micro-controller(114). The lamp unit(116) provides a white light to a panel of the projection television(110). The signal receiving unit(112) receives the sensing signal transmitted from the entrance signal sensing device(100). The micro-controller(114) controls the operation of the lamp unit(116) according to the sensing signal received through the signal receiving unit(112).

Description

PROJECTION DISPLAY SYSTEM FOR OPERATING ACCORDING TO A STATE OF A DOOR AND METHOD THEREOF}

The present invention relates to a projection type image display system and a method for controlling the operation of the lamp of the projection type image display device according to whether or not the door of the projection image display device is disposed.

Projection televisions made of LCDs or DLPs have lamps to provide the white light necessary for the operation of the LCD or DLP, which requires about 30 seconds of preheating time before operation. Therefore, in the LCD or DLP projection television, the screen is not displayed for a predetermined time for preheating the lamp even if the user turns on the power. As a result, the user has to wait for a time for the lamp to warm up until the screen is displayed after turning on the television.

Accordingly, Applicants would like to propose an LCD or DLP projection type television that allows the user to see the screen immediately without turning on the power and waiting.

In order to solve the above-mentioned problem, an object of the present invention is to provide a projection-type television capable of automatically turning on a lamp of a television by detecting a user entering a door.

Another object of the present invention is to provide a method capable of automatically turning on a lamp of a projection television.

1 is a block diagram schematically showing a projection type image display system consisting of an entrance signal detection device and a projection television according to an embodiment of the present invention.

2 is a flowchart sequentially showing the operation of the projection type image display system according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100: entrance signal detection device

102: sensor unit

104: signal transmitter

110: projection TV

112: signal receiver

114: microcontroller

116: lamp unit

A feature of the present invention for achieving the above object relates to a projection type image display system comprising an entrance signal detection device and a projection type image display device,

The access signal detecting apparatus includes a sensor unit detecting an open / closed state of the door, and a signal transmitting unit transmitting a detection signal detected by the sensor unit to the projection image display device.

The image display device may include a lamp unit for providing white light to a panel of the image display device, a signal receiver for receiving a detection signal transmitted from the access signal detecting device, and a detection signal received through the signal receiver. It includes a microcontroller for controlling the operation of the lamp unit.

The access signal detection device and the image display device is preferably connected by a wired or wireless communication line.

Another aspect of the present invention is a lamp operation control in a projection type image display system including a projection image display device having a lamp and an entrance signal detection device for transmitting a detection signal for detecting the opening and closing state of the door to the projection image display device. A method comprising: receiving a detection signal indicating that an entrance door is “opened” from the entrance signal detection device, turning on a lamp of a projection image display device, and muting the image so that the image is not displayed on the screen. And displaying an image on the screen when a key corresponding to the power ON from the outside is input within a predetermined time, and turning off the lamp otherwise.

According to the present invention, it is possible to automatically preheat the lamp of the projection-type television according to the user's entrance and exit status, so that the user can immediately watch the television without waiting for the preheating time of the lamp.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. First, in adding reference numerals to the components of each drawing, it should be noted that the same components are denoted by the same reference numerals as much as possible, even if displayed on different drawings.

Hereinafter, with reference to the accompanying Figure 1, the configuration of the projection type image display system according to the present invention will be described in detail.

1 is a block diagram schematically showing the overall configuration of a projection image display system according to the present invention. Referring to Figure 1, the projection type image display system according to the present invention is composed of the entrance detection signal device 100 and the projection type TV 110, these are connected by a wired or wireless communication line, or a power line in the home communication line Can also be used as

The entrance detection signal device 100 is installed at the entrance door of the place where the projection-type television 110 is disposed or at the front door of a home, and includes a sensor unit 102 and a signal transmission unit 104. The sensor unit 102 detects whether the door is opened or closed, and transmits the open / close signal according to the projection-type television through the signal transmitter 104. The signal transmitter 104 may use a modem or the like.

The projection type television 110 receives a signal transmitted from the entrance detection signal device 100 and transmits the signal to the micro controller 114 to the signal receiver 112 and the lamp unit according to the signal transmitted to the signal receiver 112. A microcontroller 114 and a lamp unit 116 for controlling the operation of 116 are provided.

Hereinafter, the operation of the projection type image display system having the above-described configuration will be described in detail with reference to FIG. 2.

First, the open state of the door is sensed through the sensor unit 102 of the door signal detection apparatus 100 disposed at the door, and the corresponding signal is received through the signal transmitter 104 to the signal receiver 112 of the projection-type television. Send to In other words, the user detects the entrance and transmits the detection signal to the signal receiving unit 112 of the projection television.

When the projection-type television receives the detection signal indicating the open state of the door from the entrance signal detection device 100 (step 200), the lamp unit is turned on (step 210), and the screen is muted by muting the image. The image is not displayed at step 220 (step 220).

Next, when a key corresponding to the power ON is input from the outside, the image is displayed normally (step 240). If the key corresponding to the power ON is not input for a predetermined time after the lamp is turned on, the lamp is automatically turned off (step 250).

Therefore, the user can turn on the television and display an image at the same time. On the other hand, even when the user enters and exits, if the user does not watch the TV is automatically turned off.

As described above, in the detailed description of the present invention, specific embodiments have been described, but various modifications can be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims below, but also by those equivalent to the claims.

According to the present invention, it is possible to automatically preheat the lamp of the projection-type television according to the user's entrance and exit status, so that the user can immediately watch the television without waiting for the preheating time of the lamp.

In addition, if the user does not turn on the power for a certain time, the lamp is automatically turned off, so that the projection type television can be operated efficiently.

Claims (3)

In the projection type image display system comprising an entrance signal detection device and a projection image display device, The entrance signal detection device, Sensor unit for detecting the opening and closing state of the door, It includes a signal transmitting unit for transmitting the detection signal sensed by the sensor unit to the projection image display device, The video display device, A lamp unit for providing white light to the panel of the image display device; A signal receiver which receives a detection signal transmitted from the access signal detecting device; And a microcontroller for controlling the operation of the lamp unit according to the detection signal received through the signal receiver. The projection image display device according to claim 1, wherein the access signal detecting device and the image display device are connected by a wired or wireless communication line. A lamp operation control method in a projection type image display system including a projection type image display device including a lamp and an entrance signal detection device transmitting a detection signal for detecting an open / closed state of an entrance door to the projection type image display device, Receiving a detection signal indicating that an entrance door is "opened" from the entrance signal detection device; Turning on the lamp of the projection image display device and muting the image so that the image is not displayed on the screen; Displaying an image on a screen when a key corresponding to power-on is input from the outside within a predetermined time; otherwise, turning off a lamp; Lamp operation control method characterized in that it comprises a.