JP3274711B2 - Home terminal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a home terminal, and more particularly to a home terminal for a CATV having an AC output terminal.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram showing a conventional CATV home terminal. The signal a input from the CATV input terminal 1 is divided into signals a1 and a
Branched to 2.

[0003] The branch signal a1 is input to the converter 3,
A specific frequency signal b corresponding to an available TV channel
And output through the output terminal 4. By connecting the television 12 to the output terminal 4, CATV can be viewed.

On the other hand, the branch signal a 2 passes through the data receiver 5, is demodulated into a data signal c, and is input to the control circuit 6. The control circuit 6 is mainly composed of a microcomputer, and controls the entire home terminal 11 based on the control content of the data signal c.

If the key input from the operation key 8 is a channel selection, the control circuit 6 outputs the channel selection data d to the converter 3 and simultaneously displays the channel selection on the CH display section 7.

If the key input from the operation key 8 is a television power supply, the relay 9 is turned on / off. Relay 9
Operates to turn on / off the AC power supply for the television 12 output from the AC outlet 10, and turns on the main power switch of the television 12 to the AC outlet 10,
By connecting the plug 12a, the control circuit 6 can control power ON / OFF of the television 12.

[0007] If the input data c from the CATV input terminal is television power control data, the power ON / OFF of the television 12 can be controlled in the same manner as in the case where the key input from the operation keys 8 is the television power.

[0008]

In the conventional home terminal 11, in order to control ON / OFF of a television power supply connected to the home terminal 11, a television 12 is required.
It is necessary to turn on the main power switch, and if the resident accidentally turns off the main power switch, the home terminal 11 cannot control the reception of the television 12.

As a method of controlling the reception of the television 12 by the home terminal 11, there are a method using the operation keys 8 and a method of transmitting data from the center.

In the latter case, emergency information such as an evacuation warning due to the occurrence of a natural disaster is transmitted to the television 12 by forcibly turning on the television power supply.

In this case, if the resident is unaware that the main power of the television 12 is turned off by mistake, the emergency information is not displayed on the television 12 and the emergency information cannot be obtained. There was a problem that could not respond to an emergency.

It is an object of the present invention to notify a home user of the fact that the main power of a television is turned off, so that information can be reliably transmitted to the home user.

[0013]

In order to achieve the above object, in the home terminal of the present invention, a current detecting means for detecting an output current from an AC outlet is connected to a television according to the presence or absence of a current by the current detecting means. Storage means for storing whether or not the television is connected, and turning on the television of the home terminal even though the television is connected.
When the output current is not detected, the main power supply
And a notifying means for notifying the resident of the FF.

[0014]

When the user turns off the main power of the television connected to the home terminal constructed as described above, the current detection means detects that the output current is zero when the television of the home terminal is turned on. Then, the notification means operates.

[0015]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a home terminal of the present invention. Compared with FIG. 3 of the prior art, a home terminal 21 of the present invention has a current sensor 13 and an A / D converter 1.
4 and a buzzer 15 are added. The microcomputer of the control circuit section 16 is different from the control circuit section 6.

The same parts as those in the prior art are denoted by the same reference numerals, and in the following detailed description, the duplicated parts from the prior art will be omitted.

In FIG. 1, a current sensor 13 detects a current output from an AC outlet 10 of a home terminal 21 and converts the analog value into a digital value that can be processed by a microcomputer 16 by an A / D converter 14. Is input from the AC outlet 10 as to whether or not a current is flowing.

Therefore, when the relay 9 is turned on, the microcomputer 16 determines that the television 12 is connected if the detected current is flowing, and stores the fact that the television 12 is connected in the internal RAM of the microcomputer 16. .

Next, when the relay 9 is turned on, if the detected current is zero and the contents of the RAM inside the microcomputer 16 indicate that the television 12 is connected, the main power supply of the television 12 is turned off. Then, the buzzer 15 is operated to notify the user that the main power of the television 12 is turned off.

Next, the operation of the microcomputer 16 when the power of the television 12 is turned on / off by the operation keys 8 will be described in detail with reference to the flowchart of FIG.

First, starting from the start, the TV connection flag is set to "0", and the operation proceeds to STEP1. The TV connection flag is stored in the RAM of the microcomputer 16 and the home terminal 21
Is "1" when the television 12 is connected, and "0" when it is not connected.

In STEP1, it is checked whether the operation key 8 has been pressed. If not, the process returns to STEP1. If it is pressed, check whether the buzzer 15 is ON. If the buzzer 15 is ON, go to STEP5 and
5 is turned off and the process returns to STEP1.

If the buzzer 15 is off, ST
Move to EP2, and check whether the pressed key is the “TV power” key.
The process proceeds to EP6, performs the processing of the function of the pressed key, and returns to STEP1. STE for "TV power" key
Move to P3.

In STEP 3, it is checked whether the relay 9 is turned on. If the relay 9 is turned on, the relay 9 is turned on.
Is turned off and the process returns to STEP1. If the relay 9 has been turned off, the relay 9 is turned on and the operation proceeds to STEP4.

In STEP 4, it is checked whether or not the detected current is flowing. If the detected current is flowing, it is determined that the television 12 is connected and the main power of the television 12 is turned on, and the television connection flag is set. STEP1 with "1"
Return to

If it is detected in STEP 4 that the detected current is not flowing, the flow shifts to STEP 7 to check the television connection flag. If it is "0", it is determined that the television 12 is not connected, and the flow returns to STEP 1.

On the other hand, if the television connection flag is "1", the detection current is zero even if the relay 9 is turned on while the television 12 is connected, so that the main power switch of the television 12 is off. Then, the buzzer 15 is turned on to notify the user, the TV connection flag is reset to "0", and the process returns to STEP1.

[0028]

Since the present invention is configured as described above, it has the following effects.
Even if the occupant accidentally turns off the main power switch of the TV connected to the home terminal, the occupant can be notified to that effect by the notification means, so that emergency information from outside using a wired connection can be reliably obtained. At home.

[Brief description of the drawings]

FIG. 1 is a block diagram of a home terminal of the present invention.

FIG. 2 is a flowchart of the operation of the microcomputer.

FIG. 3 is a block diagram of a conventional home terminal.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CATV input terminal 2 Divider 3 Converter 4 Output terminal 5 Data receiver 7 Channel display part 8 Operation key 9 Relay 10 AC outlet 12 Television 13 Current sensor 14 A / D converter 15 Buzzer 21 Home terminal body

Claims (1)

(57) [Claims] In a home terminal having an AC output terminal for a television, a detection means for detecting an output current from the AC output terminal, and a storage means for storing whether or not a television is connected based on the presence or absence of the detection current. And a notifying means for notifying a resident when the AC output current is not detected when the television power of the home terminal is turned on even though the television is connected.