JP2001018756A - Method for controlling lighting of backlight - Google Patents

Abstract

PROBLEM TO BE SOLVED: To regulate the lighting of a backlight on the display part of a remote controller according to time zones. SOLUTION: A backlight lighting regulating time zone is preset in the E2 PROM 34 of a remote controller. When an answer-back signal is received from a security device body 41, a remote control processing part 33 controls a backlight circuit and inhibits lighting of the backlight of a display part 32a if the current time input from a timer 35 is within the backlight lighting regulating time zone, and a display that matches the answer-back signal is shown on the display part 32a. If the time when the answer-back signal from the security device body 41 is out of the backlight lighting regulating time zone, the remote control processing part 33 controls the backlight circuit 39 to light the backlight of the display part 32a and provides a display that matches the answer-back signal received.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backlight control method for a remote controller of a keyless entry device or a security device, and more particularly to a backlight control method of a remote controller when an answer back signal is received.

[0002]

2. Description of the Related Art In recent years, incidents of mischief and theft of vehicles have frequently occurred due to the deterioration of security, and car security systems for countering such incidents have been rapidly spreading.
In a car security system, the driver gets off the vehicle,
When the arming / disarming key of the remote controller (remote control device) is pressed after the door is closed, the remote control device emits a radio wave obtained by digitally modulating a carrier wave with a digital remote control signal including an ID code, a command code related to an arming command, and the like. . The radio wave is caught by an antenna of the security device main body installed at a predetermined location of the vehicle, input to a receiver, received and demodulated, and a reception ID code matches an ID code registered in the security device main body in advance. If they match, lock the door and start arming operation (security operation). During arming, monitor the output of various sensors such as door sensor, hood (bonnet) / trunk sensor, shock sensor, glass sensor, etc. An alarm is generated when a predetermined sensor operates. For example, when the door sensor detects the opening of the door during the arming, the security device main body drives the siren or controls the blinking of the headlamp to urge the evacuation of the pirate.

When the driver who returns to the vehicle presses the arming / disarming key of the remote control device, the remote control device converts the carrier wave into a radio wave digitally modulated by a digital remote control signal including an ID code, a command code relating to a disarming command, and the like. Fire. The radio wave is caught by an antenna of the security device main body installed at a predetermined location of the vehicle, input to a receiver, received and demodulated, and a reception ID code matches an ID code registered in the security device main body in advance. If they match, the arming state is released and door unlock control is performed on the door lock device, and if the siren has been sounded or the headlamp has been blinking, it is stopped. As described above, in the car security system, in addition to the convenience that the door lock and the door unlock can be performed by the remote control operation, the pirate tries to tow the vehicle, destroy the body with a hammer, etc. It has an excellent function that you can get rid of by issuing an alarm when you try to break.

Further, a recent security system with a remote control device has a configuration in which data can be bidirectionally transmitted and received between the remote control device and the security device main body. That is, the remote control device transmits a predetermined command to the security device main body in response to a key operation, the security device main body receives a command from the remote control device, executes a process corresponding to the command, and executes a state of the security device main body. Is sent to the remote control device as response data, and is displayed on the LCD display unit of the remote control device.

FIG. 3 is an external view of a remote control device provided with a display unit, wherein 21 is an LCD display unit, and 22 is a key unit. The LCD display unit 21 is disposed on the upper surface of the remote control device, and (1) a time / date indicator 21a for displaying time / date, and (2) a morning / afternoon identification display unit 21.
b, (3) 14-segment 5-digit character display section 21
c, (4) first to fourth car indicators 21d and the like indicating which of the four vehicles the security main body of the vehicle is to be remotely controlled.

The key section 22 includes a TX / PANIC key 22a for alternately instructing arming / disarming, first to third extended keys 22b to 22d, and a menu key 22.
e, time / date indicator 21a for each short press
The date / timer key 22f is displayed in the order of time → date → security operation elapsed time, and the car No. which switches the vehicle number to be controlled for each short press in the order of 1 → 2 → 3 → 4 → 1. It has a key 22g.

When the remote control device receives the answer back signal from the security device main body, the remote control device displays the character display portion 21c.
The message corresponding to the answer back signal is scroll-displayed.

For example, when the arming operation is performed, when an answer back signal indicating the completion of the arming operation is received, a message "SYSTEM IS ARMED" is scroll-displayed. CHECK DOOR, CHE based on the answerback signal indicating that
CK HOOD / TRUNK ”,“ CHECK RAD
A message such as "AR SENSOR" is scroll-displayed.

When the disarming operation is performed, "SYSTEM IS DISARMED" is scroll-displayed. When each sensor responds during the arming mode, "DOOR TRIPED" is displayed.
"HOOD / TRUNK TRIPED", "RAD
AR SENSOR TRIPED "," IMPAC
A message such as "T SENSOR TRIPED" is scroll-displayed on the character display section 21c, and the time at which the sensor responded is displayed on the time / date indicator 21a.

With the above arrangement, when the user operates the security device main body using the remote control device, the answer back signal is received from the security device main body, and the status of the security device main body is changed. It can be easily confirmed on the display.

[0011] In addition, there is a remote control device in which a backlight circuit is mounted on an LCD display section so that the display contents can be easily confirmed even in darkness at night. In such a security system, upon receiving an answer back signal (security device status signal) from the security device main body, the remote control device performs display according to the received answer back signal and turns on the backlight of the LCD display unit. It has become.

[0012]

In a conventional security device or keyless entry device, the backlight of the display unit is turned on each time the remote control device receives an answerback signal from the security device body or the keyless entry device body. Therefore, the battery consumption of the remote control device increases. Therefore, the life of the built-in battery is significantly shortened, and the built-in battery of the remote control device needs to be frequently replaced.・

From the above, it is an object of the present invention to set a backlight lighting restriction time zone of a display unit of a remote control device,
Even if an answer back signal is received from the security device main body or the keyless entry device main body during the backlight lighting restriction time zone, the backlight of the display unit of the remote control device is not turned on to suppress the consumption of the built-in battery.

[0014]

According to the present invention, a remote controller is provided with a display unit with a backlight, and when an answer back signal is received from a keyless entry device or a security device body, the answer back is received. In the backlight lighting control method of the remote controller for performing the display according to the signal and lighting the backlight of the display unit, a time zone for restricting the lighting of the backlight is set, and a keyless operation is performed in the backlight lighting time zone. This is achieved by not turning on the backlight of the display unit even when an answer back signal is received from the entry device or the security device body.

[0015]

1 is a block diagram of a security device according to an embodiment of the present invention. Reference numeral 31 denotes a remote control device, 41 denotes a security device main body provided in a vehicle, 51 denotes an abnormality detection sensor, and 61 denotes an alarm. The unit 71 is a door opening / closing mechanism.

In the remote control device 31, reference numeral 32 denotes an operation unit, which includes a display unit 32a for performing various displays and a key unit 32b having various keys including arming / disarming (for example, see FIG. 3). The operation of turning on / off the operation of the security system, opening / closing the door lock, setting the backlight restriction time zone of the display unit, and the like are performed. Reference numeral 33 denotes a remote control processing unit having a microcomputer configuration, which performs processing corresponding to key operations of the operation unit 32, processing for creating transmission data, Manchester encoding of transmission data, and the like, and the Manchester sent from the security device main body 41. It performs restoration of coded response data, processing according to the response data, and the like. Numeral 34 denotes a nonvolatile E2PROM for storing an ID code, a backlight lighting restriction time zone, etc., numeral 35 denotes a timer, numeral 36 denotes a transmitter which digitally modulates a carrier based on transmission data by a predetermined modulation method such as FSK modulation and transmits the carrier. , 37 is a transmitting / receiving antenna, and 38 is a receiving unit for receiving and demodulating data transmitted from the security device body. Reference numeral 39 denotes a backlight circuit that performs backlight of the display unit 32 according to a command from the remote control processing unit.

In the security device main body 41, 42
Is a transmitting / receiving antenna, 43 is a receiving unit that performs high-frequency amplification, frequency conversion, and digital demodulation to receive and demodulate data transmitted from the remote control device 31, and 44 is based on data input from a security controller described later. A transmission unit 45 for digitally modulating a carrier by a predetermined modulation method such as FSK modulation and transmitting the same. Reference numeral 45 denotes a security controller having a microcomputer configuration.
In addition to performing security monitoring control, door lock opening / closing control, and the like, response data (answer-back signal) is created and input to the transmission unit 44 as appropriate.

In the abnormality detection sensor 51, reference numeral 51a denotes a door sensor for detecting the open / closed state of the door, and 51b denotes a hood (bonnet) for detecting the open / close state of the vehicle.
A trunk sensor 51c is a shock sensor for detecting a shock applied to the vehicle, and 51d is a glass sensor for detecting breakage of a glass such as a windshield.
The sensor for detecting the abnormality applied to the vehicle is not limited to the illustrated one, and a motion sensor and other sensors can be provided. In the alarm unit 61, 6
1a is a siren drive unit, and 61b is a headlight blinking circuit.

When the user operates the operation unit 32 of the remote control device 31 to input a backlight lighting restriction time zone (backlight lighting restriction start time and backlight lighting restriction end time) of the display unit 32a, the remote control processing unit 33 Stores the backlight lighting regulation start time and the backlight lighting regulation end time in the E2PROM 34, respectively. In addition,
The time setting can be set by various methods other than the above.

FIG. 2 is a diagram showing an operation flow of the remote controller according to the embodiment of the present invention. Here, a case will be described in which the user operates the operation unit 32 of the remote control device 31 in advance to store the backlight lighting restriction time zone in the E2PROM 34, and the user operates the remote control device to perform an arming operation.・

First, when a predetermined key provided on the key section 32 a of the operation section 32 of the remote control device 31 is pressed, the remote control processing section 31 creates an arming command, and sends an arming signal to the security device main body 41 through the transmission section 36. Is transmitted (step S101). Next, the remote control processing unit 33 determines whether or not an answer back signal (arming OK signal) has been received from the security main body (step S102). If the answer back signal has not been received, a predetermined time has elapsed. It is determined whether or not it is (step S103).

If the predetermined time has not elapsed in step S103, steps S102 to S103 are repeated until the answer back signal is received in step S102 or the predetermined time is reached in step S103. When the predetermined time has elapsed in step S103, the process ends.

In step S102, upon receiving the answer back signal from the security device main body 41, the remote control controller 33 determines whether or not the current time input from the timer 35 is a backlight lighting restriction time zone stored in the E2PROM 34 in advance. (Step S10)
4).

In step S104, if the current time is in the backlight lighting restriction time zone, the remote control processing unit 33 controls the backlight circuit 35 to turn on the back light of the display unit 32a without turning on the backlight of the display unit. A message based on the signal (for example, “SYSTEM IS AR
MED ”) (Step S10)
5). When the scroll display is repeated a predetermined number of times (for example, three times) (step S106),
The message display ends (step S107).

In step S104, if the current time is not the backlight lighting regulation time zone, the remote control processing unit 33 controls the backlight circuit 35 to turn on the backlight of the display unit, and the answer back signal is displayed on the display unit 32a. (For example, “SYSTEM IS
ARMED ”) (Step S10)
9). When the scroll display of the message is repeated a predetermined number of times (for example, three times) (step S110), the remote control processing unit 33 ends the backlight lighting and display of the display unit (step S111).

With the above arrangement, the backlight of the display unit of the remote control device can be prevented from being turned on even when the answer back signal is received from the security device main body during the backlight lighting restriction time period of the display unit.

Although the above embodiment has been described with reference to an example in which an arming operation is performed, an operation other than the arming operation, for example, an operation such as a disarming operation is performed.
The same applies when an answer back signal is received from the security device body.・

In the above embodiment, the security device has been described as an embodiment, but the same applies to a keyless entry device.

Further, in the description of the above embodiment, the backlight is not turned on even when the answer back signal is received in the backlight turning on / off period. However, the lighting on key is provided on the remote control device, and the backlight is turned on. Even during the restricted time period, the backlight can be turned on when the lighting-on key is pressed. In this way, the backlight of the display unit can be turned on as necessary even in a dark place such as an underground parking lot in the daytime set in the backlight lighting restriction time zone, and the display contents can be easily checked. be able to.

Furthermore, in the description of the above embodiment, the backlight lighting restriction time zone is stored in the remote control device,
The remote control device determines whether the current time is within the backlight lighting restriction time zone. However, the backlight lighting restriction time zone is stored in the security device main body, and the security is set in the backlight lighting restriction time zone. The device main body may send a backlight non-lighting command to the remote control device together with the answer back signal.

The present invention has been described with reference to the embodiments.
The present invention can be variously modified in accordance with the gist of the present invention described in the claims, and the present invention does not exclude these.

[0032]

As described above, according to the present invention, the backlight lighting restriction time zone of the display unit of the remote control device is stored in advance, and the answer back signal from the security device main body is stored in the backlight lighting restriction time zone. Since the backlight of the display unit of the remote control device is not turned on even when receiving, the consumption of the battery of the remote control device can be suppressed, and frequent battery replacement is not required.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a security system according to the present invention.

FIG. 2 is a diagram showing an operation flow of the remote control device.

FIG. 3 is an explanatory view illustrating the appearance of a remote control device including a display unit.

[Explanation of symbols]

 31, remote control device 32, operation unit 33, remote control processing unit 34, E2PROM 35, timer 36, transmission unit 37, transmission and reception antenna 38, reception unit 41, security device body

Claims (1)

[Claims] 1. A remote controller provided with a display unit with a backlight, and when receiving an answer back signal from a keyless entry device main body or a security device main unit, a display corresponding to the answer back signal is performed, and the display unit is displayed. In the backlight lighting control method of the remote controller for lighting the backlight, a time zone for restricting the lighting of the backlight is set, and an answer back signal from the keyless entry device or the security device body in the backlight lighting restricted time zone. The backlight of the display unit is not turned on even when the backlight is received.