KR19980039552A - Consumer electronics system with remote control signal reception angle extension - Google Patents

Abstract

According to the present invention, a plurality of remote control signal receivers are provided, and by adopting a signal having the highest reception level among the infrared signals applied through the plurality of receivers, the remote control signal reception range is widened and there is a possibility of malfunction due to disturbance. The present invention relates to a home appliance system having an extended function of receiving a remote control signal receiving angle, the remote control device for remotely controlling the operation of the device, and a plurality of receivers for receiving infrared signals in each direction from the remote control device. And a D / A converter configured to convert a digital code signal output from each receiver into an analog signal, including a D / A converter configured to have the same number as the plurality of receivers. Receive level is increased by receiving the signal output from each D / A converter and comparing the received level of each input signal. A reception level comparison unit for outputting a predetermined determination signal for selecting the longest signal, and one of the output signals of the reception unit according to the level of the determination signal outputted from the reception level comparison unit, and based on this, operation of the overall apparatus It characterized in that it comprises a control unit for controlling the.

Description

Consumer electronics system with remote control signal reception angle extension

The present invention relates to a home appliance having a remote control device, and in particular, a plurality of remote control signal receivers are provided, and by adopting a signal having the highest reception level among the infrared signals applied through the plurality of receivers, The present invention relates to a home appliance system having an extended function of receiving angle of a remote control signal, which can be widened and eliminate the possibility of malfunction due to disturbance.

Recently, in line with the trend of increasing functions of home appliances, remote control systems, which have been applied to expensive devices in the past, have been extended to extremely general home appliances in recent years. The main components of the remote controller used for the control are shown.

In Fig. 1, reference numeral 1 denotes a key matrix circuit for outputting a predetermined key signal corresponding to a button key selected for user's key selection, reference numeral OSC denotes an oscillator for generating a predetermined frequency signal, and 2 denotes an oscillator ( A remote control IC as a control unit for outputting a code signal corresponding to a key signal input through the key matrix circuit 1 based on a predetermined frequency signal oscillated by OSC, and reference numeral BAT. It is a battery.

In addition, the reference numeral LED is a light emitting diode which is driven by the power supplied from the battery (BAT.) And outputs an infrared signal for the user's key selection, and the reference numeral Q is output from a predetermined terminal of the remote control IC (2). The transistor is turned on / off based on a code signal to interrupt an operating current applied to the LED.

That is, the remote control device having the above-described configuration has an LED driving unit (2) based on the code data corresponding to the key input of the remote control IC (2) for the user's key input through the key matrix circuit (1). The LED is operated by driving on / off the transistor Q provided in 4). As a result, the infrared signal corresponding to the key input of the user is output from the LED.

On the other hand, the infrared signal transmitted by the above-described process is to be detected through the remote control signal receiving unit provided on the main body side, the conventional remote control signal receiving unit through the one receiving window (R) as shown in FIG. It is supposed to receive the remote control signal, so it is left and right based on the normal direction of the receiver. It was supposed to have a reception angle of.

Therefore, when the remote control is operated in a direction outside the reception angle, other operations other than the function selected by the user may be executed or no operation may be performed because no remote control signal is transmitted at all.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a plurality of remote control signal receivers, and adopts a signal having the highest reception level among infrared signals applied through the plurality of receivers, thereby broadening the remote control signal reception range. At the same time, an object of the present invention is to provide a home appliance system having an extended function of receiving a remote control signal receiving angle, which can eliminate the possibility of malfunction due to disturbance.

1 is a view showing the main configuration of a conventional remote control device used in the prior art.

2 is a view for explaining a remote control signal reception angle.

Figure 3 is a block diagram showing the internal configuration of a television receiver having a remote control signal reception angle expansion function according to an embodiment of the present invention.

4 is a view showing an example of installation of remote control receivers A and B shown in FIG.

******* Explanation of symbols on the main parts of the drawings *******

Ⅰ: Remote control unit Ⅱ: TV receiver main body

1: Keymetrics Circuit 2: Remote Controller IC

3: local oscillation circuit 8: first D / A converter

9: second D / A converter 10: reception level comparison unit

11: microprocessor A: first receiving unit

B: second receiver OSC: oscillator

Q: Transistor LED: Light Emitting Diode

C1, C2: Capacitor BAT: Battery

R: resistance

According to the present invention for realizing the above object, a home appliance system having a remote control signal reception angle expansion function includes a remote control device for remotely controlling the operation of the device, and a plurality of infrared signals for receiving infrared signals from each direction transmitted from the remote control device. A receiver configured to include a receiver, a D / A converter configured to convert a digital code signal outputted from each receiver into an analog signal, including a D / A converter configured to be equal to the plurality of receivers, and the D / A converter A reception level comparison unit for receiving a signal output from each of the provided D / A converters and comparing a reception level of each input signal to output a predetermined determination signal for selecting a signal having the largest reception level; and a reception level comparison One of the output signals of the receiver is selected according to the level of the determination signal outputted from the receiver and based on this, Including a control unit for control is small is characterized in that configured.

That is, according to the present invention having the above-described configuration, the infrared signal transmitted by the user's key input is received through a plurality of receivers, and received by comparing the level of the signal input through each receiver using the reception level comparison unit. At the same time as selecting the signal with the largest level, the controller causes the operation to be performed accordingly.

Hereinafter, with reference to the accompanying drawings will be described an embodiment according to the present invention.

3 is a block diagram of a television receiver having an extended function of receiving a remote control signal reception angle according to an embodiment of the present invention, in which components which perform the same functions as those shown in FIG. Is omitted.

In Fig. 3, reference numeral I denotes a remote control device, and II denotes a TV side configuration. Among the TV side II configurations, reference numerals A and B are provided on the left and right sides of the front of the TV main body. First and second receivers for receiving an infrared signal transmitted from the remote control device (I) and outputs an electrical code signal corresponding thereto.

Further, reference numeral 8 is a first D / A converter for converting and outputting a digital code signal output from the first receiver A into an analog signal, and 9 is an analog signal for data output from the second receiver B. The second D / A converter 10 converts and outputs the output signals of the first and second D / A converters 8 and 9 and compares the reception levels of the two input signals. A reception level comparator for outputting a low level determination signal, and 11 is one of the signals applied from the first and second receivers A and B according to the level of the determination signal output from the reception level comparator 10. The microprocessor 11 as a control unit that selects an input of and controls the operation of the entire apparatus based on this input.

Next, the operation of the device having the above configuration will be described.

When the user operates the remote control device I and inputs a predetermined key signal, the infrared signal is transmitted from the remote control device I to the main body, and the signal transmitted from the remote control device I is transmitted to the front of the main body. It is received by the first and second receivers A and B provided on the left and right sides of and is converted into a predetermined code signal.

Meanwhile, the first and second D / A converters 8 and 9 convert the digital code signals output from the first receiver A and the second receiver B into analog signals, respectively. The level comparator 10 receives signals output from the first and second D / A converters 8 and 9 through two input terminals P1 and P2 and compares the levels of the two signals, for example, the first signal. When it is confirmed that the signal output level of the D / A converter 8 is greater than the signal output level of the second D / A converter 9, a high level determination signal is output, and conversely, the second D / A converter ( When it is confirmed that the signal output level of 9) is greater than the signal output level of the first D / A converter 8, the low level determination signal is output.

The microprocessor 11 selects a code signal applied from the first receiver A through the I ₁ input terminal when the high level determination signal is input through the determination signal input terminal C, and then low level. When the determination signal is inputted, the code signal applied through the I ₂ input terminal is selected from the second receiver B, and the corresponding component of the TV receiver is controlled based on this.

That is, according to the embodiment, the remote control signal receiving angle expansion function is provided so that the remote control signal receiving units are installed on the left and right sides of the front of the TV, respectively, and the data having the higher receiving level is adopted by comparing the levels of the infrared signals applied through the both receiving units. A home appliance system equipped with

Meanwhile, the present invention is not limited to the above embodiments and can be variously modified within the scope not departing from the technical gist of the present invention.

As described above, according to the present invention, by installing a plurality of remote control signal receivers and adopting the signal having the highest reception level among the infrared signals applied through the plurality of receivers, the remote control signal reception range is widened and noise is disturbed. It is possible to eliminate the possibility of malfunction due to).

Claims (1)

A remote control device for remotely controlling the operation of the device, Receiving unit consisting of a plurality of receivers for receiving infrared signals in each direction from the remote control device, A D / A converter having a D / A converter configured to be equal to the plurality of receivers and converting and outputting a digital code signal output from each receiver into an analog signal; Receive level comparison which receives a signal output from each D / A converter provided in the D / A converter and compares the reception level of each input signal to output a predetermined determination signal for selecting the signal having the largest reception level. Wealth, and And a controller for selecting one of the output signals of the receiver according to the level of the determination signal output from the reception level comparator and controlling the overall operation of the apparatus. Equipped household appliances system.