KR20140122428A - photodetector and photodetecing method thereof - Google Patents

photodetector and photodetecing method thereof Download PDF

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Publication number
KR20140122428A
KR20140122428A KR1020130039079A KR20130039079A KR20140122428A KR 20140122428 A KR20140122428 A KR 20140122428A KR 1020130039079 A KR1020130039079 A KR 1020130039079A KR 20130039079 A KR20130039079 A KR 20130039079A KR 20140122428 A KR20140122428 A KR 20140122428A
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KR
South Korea
Prior art keywords
signal
light receiving
control
pattern
laser
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KR1020130039079A
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Korean (ko)
Inventor
이민호
장영민
김범휘
이기영
Original Assignee
경북대학교 산학협력단
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Priority to KR1020130039079A priority Critical patent/KR20140122428A/en
Publication of KR20140122428A publication Critical patent/KR20140122428A/en

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
    • G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H04Q9/04—Arrangements for synchronous operation

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Selective Calling Equipment (AREA)
  • Details Of Television Systems (AREA)

Abstract

The present invention relates to a photodetector. The photodetector includes a photodetecting part which receives a laser signal, a storage part which stores a control cord corresponding to signal patterns, a control part which detects the control cord corresponding to the signal pattern of the received laser signal from the storage part, and a transmission part which transmits the control signal corresponding to the detected control cord to an external device. Thereby, several remote controllers can be managed and an electronic device having no remote controller can be controlled.

Description

[0001] PHOTODETECTOR AND PHOTODETECING METHOD THEREOF [0002]

The present invention relates to a light receiving device and a control method thereof, and more particularly, to a light receiving device that receives a laser pattern signal and transmits a control signal corresponding thereto to an external device and a control method thereof.

Various types of electronic devices are being used due to the development of electronic technology. In addition, the form and control method of a control device for controlling an electronic device for user's convenience are also diversified.

An example of a control device that can be easily seen at home is a remote control. For example, a home appliance such as a TV, a DVD player, and an air conditioner can control the operation of a consumer by using a remote controller.

The remote controller can be implemented differently depending on the type of electronic device, the manufacturer, and the like. That is, the TV remote control can control only the TV and audio remote control audio.

Therefore, as the number of electronic products increases, the number of remote controllers increases. In this case, the user has to find out which of the remote controllers of the electronic device he / she wants to use.

It is an object of the present invention to provide a light receiving device for receiving a laser signal and transmitting a corresponding control signal to an external device, and a control method thereof.

According to an aspect of the present invention, there is provided a light receiving apparatus including: a light receiving unit that receives a laser signal; a storage unit that stores a control code corresponding to each of a plurality of signal patterns; A control unit for detecting a control code corresponding to the control code from the storage unit, and a transmission unit for transmitting a control signal corresponding to the detected control code to an external device.

Here, the signal pattern may be a Morse code pattern expressed by a dash and a dot.

Alternatively, the signal pattern may be a pattern divided into at least one of the number of light-receiving times of the laser signal, the light-receiving time, and the interval between light-receiving points.

Also, the external device may be a remote control or an electronic device which does not have a remote control device.

According to another aspect of the present invention, there is provided a method of controlling a light receiving device, comprising: receiving a laser signal; detecting a control code corresponding to a signal pattern of the received laser signal from the storage; And transmitting the control signal corresponding to the code to the external device.

Here, the signal pattern may be a Morse code pattern expressed by a dash and a dot.

Alternatively, the signal pattern may be a pattern divided into at least one of the number of light-receiving times of the laser signal, the light-receiving time, and the interval between light-receiving points.

1 is a block diagram showing a configuration of a light receiving device according to an embodiment of the present invention,
2 is a flowchart illustrating a method of storing a signal pattern according to an embodiment of the present invention.
3 is a diagram showing an example of a signal pattern and a corresponding performing operation,
4 is a diagram showing a morse code,
5 is a detailed block diagram of a receiving unit including a laser path guide unit according to an embodiment of the present invention.
6 is a view showing a state in which a light receiving device can be mounted on various devices,
7 is a view showing an example of a light receiving portion configuration,
8 is a view showing a state in which a light receiving device is mounted on a TV,
9 is a view showing that a lens is mounted on a laser emitting portion so that a laser signal can be dispersed,
10 is a flowchart illustrating a method of controlling a light receiving device according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a configuration of a light receiving device according to an embodiment of the present invention. The light receiving device 100 refers to a device that receives a laser signal and sends a corresponding control signal to an external device. 1, the light receiving device 100 includes a light receiving unit 110, a control unit 120, a storage unit 130, and a transfer unit 140. [

The light receiving unit 110 senses a laser signal. The laser signal can be emitted from a laser pointer (not shown). The light receiving unit 110 may sense a laser signal using a light receiving element such as photodiodes. The light receiving unit 110 transmits an electrical signal corresponding to the laser signal to the controller 120 when the laser signal is sensed.

Although the light receiving unit 110 is shown in FIG. 1, the light receiving device 100 may include a plurality of light receiving units. Alternatively, a plurality of light receiving elements may be provided in one light receiving section. For example, in order to increase the light receiving area of the laser signal, the same type of light receiving elements can be connected in an array form. Alternatively, a plurality of light receiving elements capable of detecting lasers of different wavelengths may be connected and used. The construction of the light receiving unit 110 using a plurality of light receiving elements will be described in detail below.

When the converted electrical signal is transmitted from the light receiving unit 110, the controller 120 performs an operation corresponding thereto. For example, the control unit 120 detects the control code corresponding to the signal pattern of the laser signal received by the light receiving unit 110 from the storage unit 130. Specifically, when receiving the electric signal corresponding to the laser signal from the light receiving unit 110, the control unit 120 detects the signal pattern based on the input time of the electric signal, the magnitude of the electric signal, the length of the input region, For example, if the first electrical signal is input at the first rising edge of the clock signal and the subsequent electrical signal is sequentially input at the fourth, seventh, eleventh rising edge, etc., Pattern can be detected.

When the signal pattern of the received laser signal is detected, the control unit 120 determines whether or not the signal pattern matches the signal pattern stored in the storage unit 130. As a result of the determination, if there is a matching signal pattern, the control unit 120 detects a control code corresponding to the signal pattern from the storage unit 130.

The storage unit 130 stores control codes corresponding to a plurality of signal patterns. The control code may be a command for instructing an external electronic device to perform various control operations such as turn-on, turn-off, volume up, volume down, channel up, channel down, When the control code is detected from the storage unit 130, the control unit 120 controls the transmission unit 140 to transmit the detected control code to the external device.

The transmission unit 140 transmits a control signal corresponding to the control code to the external device under the control of the control unit 120. The control signal can be varied according to the signal pattern of the laser signal as described above.

The transmission unit 140 may be implemented by various wired / wireless communication methods. Specifically, an IR (Infra Red) method, a wired communication method, a WiFi method, a Bluetooth method, an NFC method, or the like can be used. The NFC scheme means that the NFC scheme operates in an NFC (Near Field Communication) scheme using 13.56 MHz band among various RF-ID frequency bands such as 135 kHz, 13.56 MHz, 433 MHz, 860 to 960 MHz, and 2.45 GHz. In the case of using a Wi-Fi system or a Bluetooth system, various connection information such as an SSID and a session key may be transmitted and received first, and communication information may be used to transmit and receive various information. When the IR scheme is used, the transmission unit 140 may include an IR lamp.

The control code stored in the storage unit 130 of the light receiving device 100 may be generated in advance in the manufacturing process of the light receiving device 100 and stored in the storage unit 130 as a default, The user can arbitrarily create or update the program during use. That is, when it is difficult for the user to implement the signal pattern set by the manufacturer as a laser pointer, the user inputs a new signal pattern by operating the laser pointer in a desired pattern, and performs a desired control operation on the signal pattern Can be matched.

2 shows a flow chart for explaining how a user directly inputs a signal pattern. 2, it is assumed that the external device communicating with the light receiving device 100 is a remote controller.

First, the user selects a control operation to be matched with the signal pattern (S210). For example, if the user wishes to set a volume up operation for a specific signal pattern, the user first presses the volume up button on the remote control.

Then, within a predetermined time (for example, 3 seconds), the user inputs a specific laser signal pattern to the light receiving unit 110 (S220). That is, the light receiving unit 110 of the light receiving device 100 is aimed with a laser pointer, and the laser signal is turned on / off in a desired pattern.

When the signal pattern is inputted, the controller 120 determines whether a pattern overlapping the input signal pattern is already stored (S230). If there is a duplicate pattern (S230-Y), a notification sound is output to notify the user that the storage step is no longer performed (S240).

On the other hand, if there is no overlapping pattern (S230-N), the control unit 120 matches the information on the input laser signal pattern with the control code corresponding to the control operation selected by the user and stores the same in the storage unit 130 (S250).

The object of the storing step may be an external device other than the remote controller. For example, when a light receiving device is mounted on a lighting stand, if a laser signal pattern is input while the lighting stand with the light receiving device is turned on, the turn-on command and the input laser signal pattern are matched And stored in the storage unit.

As described above, since the user can directly select a laser pattern shape and set a corresponding command, there is an advantage that it is not required to be dependent on a specific pattern. Further, since the light receiving device 100 is subjected to the above-described setting steps after being mounted, there is an advantage that there is no limitation of the external device to which the light receiving device 100 is applicable. In addition, the user convenience is maximized because the pattern can be reset at any time.

On the other hand, some basic operations may be set in advance at the manufacturing stage of the light receiving device 100, even if the user does not set them as described above. Therefore, the user can use the preset settings as they are, or can change them according to their own preferences.

3 is a diagram showing an example of a signal pattern stored in the storage unit 130 and a corresponding performing operation according to the storing step described above. 3, signal patterns are classified according to various criteria such as the number of times of receiving the laser signals, the interval between the light receiving time and the light receiving time, and different control operations can be mapped according to the signal patterns.

For example, when the laser signal is received once, the control code 0x01 for turning on or off the external device is input.

For example, when the laser signal is received once and the second signal is received within one second, a control code 0x02 for channeling up the external device is input.

For example, when the laser signal is received once and the second signal is received after 2 seconds, the control code 0x03 for channeling down the external device is input.

For example, when the laser signal is received and the received light continues for 2 seconds or more, a control code 0x04 for continuously moving the external device is input.

Fig. 3 only shows some of the signal patterns and several examples of commands matching the patterns. According to any one of the various embodiments of the present invention, the command may include a command for inputting characters.

As the functions of electronic apparatuses are diversified, there has been a limit in that the number of buttons becomes too large if one-to-one matching of specific commands to specific buttons of electronic apparatuses occurs. In order to overcome these limitations, a method of operating a specific function of an electronic device by inputting an alphabet word or sentence into an electronic device has been introduced. For example, when watching TV, a password consisting of numerals or letters is input to enter a minor viewing restriction channel. In addition, home appliances such as TVs and refrigerators are required to input characters for Internet search while the Internet is connected. According to this necessity, a button for inputting characters has been added to the remote controller, and FIG. 4 shows a Morse code for inputting the characters. Morse code is a systematic code that expresses English alphabets by a combination of dashes and dots.

Referring to FIG. 4, the user can use the laser pointer as a mos signal. For example, once the dot and the dash are received, the alphabet A is input into the search window of the electronic device. For example, when four dots are received, the alphabet H is input into the search window of the electronic device.

The light receiving unit 110 separately detects a plurality of wavelengths in consideration of the case where a laser pattern for performing character input by the Morse code and performing operations such as turn-on, turn-off, volume-up, And a plurality of photodiodes.

5, the light receiving unit 110 may include a laser receiving unit 510, a laser path guide unit 520, and a plurality of photodiodes PD1, PD2, and PDn.

For example, a laser beam having a wavelength of lambda 1 may be emitted from the laser, light may be incident on the laser receiving end 510 of the light receiving unit 110, and light may be incident only on the PD1 through the laser path guide unit 520. The light sensed by the PD 1 is converted into an electrical signal that can be matched with a control code for performing only character input by the Morse code.

For example, a laser beam having a wavelength other than lambda 1 may be emitted from the laser, light may be incident on the laser receiving end 510 of the light receiving unit 110, and light may be incident on the PD 2 only through the laser path guide unit 520. The light sensed by the PD 2 is converted into an electrical signal that can be matched with a control code for performing operations such as turn-on, turn-off, and volume-up.

In order to distinguish the character input from the other operations as described above, the laser pointer may be configured to have two or more light sources having different wavelengths at the same time. Therefore, the wavelength of lambda 1 can be separated into wavelengths only for character input, thereby preventing confusion with patterns for other operations.

PD1 and PD2 as well as a plurality of photodiodes capable of detecting a wider wavelength. It is possible to store a plurality of patterns related to a plurality of wavelengths. Even if the same pattern is used, different wavelengths can correspond to different control codes, and the convenience of the user can be sought when the pattern is stored.

The control operation corresponding to each signal pattern can be variously implemented according to the type of control target device. For example, when the controlled device is a DVD player, control operations such as playback, stop, fast forward, rewind, and recording may be stored for each signal pattern. The light receiving device 100 of FIG. 1 may be implemented as a remote controller itself to directly control the operation of an electronic device to be controlled, but it may be mounted on one side of the remote control to control the electronic device.

6 is a diagram showing examples of various control target devices.

6, there are various kinds of devices such as a remote control 610, a stand 620, an illumination on and off switch 630, and the like equipped with a light receiving unit.

If the light receiving device is mounted even when the remote control device is not provided, such as a stand, an illumination on / off switch 630, or the like, the light receiving device itself can function as a remote control. Accordingly, the user can remotely control the stand 620, the illumination switch 630, and the like with the laser pointer 10 only.

As a result, it becomes possible to perform integrated management by using a device having a remote control, a device having no remote control, or a laser. For example, if the patterns for turning on the TV remote controller, the air conditioner remote controller, the audio remote controller, the stand, etc. are matched, the turn-on operation is performed for each device in one pattern without having to memorize the pattern operation separately for each device, can do.

When the laser pointer 10 receives the laser pattern signal from the light receiving unit 110 mounted on the control target device as shown in FIG. 6, the control target device receives the control signal through the transfer unit 140, And the like. The types of control signals and the transmission method thereof have been described in detail in the above-mentioned various embodiments.

The light receiving device 100 may be manufactured in various sizes to suit the condition of the device to be mounted. For example, when the light receiving device 100 is implemented as a remote controller itself, it is mounted on the electronic device itself, so that the restriction on the size of the light receiving device is relatively less than when the remote control is mounted on the remote control. 7 shows an example in which the area of the light receiving section 110 is wide.

7, one or more photodiodes 110-1 to 110-n are disposed in the light receiving unit 110. [ The plurality of photodiodes disposed in the light receiving section 110 are photodiodes capable of performing the same function. When the laser is aligned with any one of the photodiodes 110-1 to 110-n, the light receiving section 110 senses the laser signal do. This results in ensuring a sufficient area for receiving the laser signal, so that the user can reduce the trouble of precisely aligning the laser pointer with a narrow light receiving portion far from the user. The manner in which the photodiodes 110-1 to 110-n are arranged is not limited to that shown in Fig. Depending on the type of the electronic apparatus to which the light receiving apparatus 100 is to be attached, the light receiving unit 110 may be represented in various shapes and may have a three-dimensional shape.

8 shows an example in which a light receiving device 100 in which a plurality of photodiodes 110-1 to 110-n form a light receiving unit 110 can be mounted on an external device. A device such as the stand of FIG. 8 is a device that can secure a sufficient area for mounting the light receiving device 100. Therefore, a light receiving device 100 including a plurality of photodiodes 110-1 to 110-n as described with reference to FIG. 7 may be mounted. As a result, the light receiving portion 110 having a large area can be secured, which makes it easy to match the laser pattern signal.

9 is a view showing that a lens 910 is mounted on a laser emitting portion so that a laser signal can be dispersed. In general, a light beam emitted from a laser pointer is emitted in a straight line and is displayed as a small point, so that the area through which the light beam can reach is narrow. In order to solve such a problem, the area of the light receiving unit 110 may be made wide as shown in FIG.

However, when the device itself to which the light receiving device 100 is mounted is small, it is difficult to mount a light receiving device larger than the device. 9, a method of mounting the lens 910 for dispersing the light to the portion where the light of the laser 920 exits can be conceived. As a result, the laser beam can be dispersed and the laser signal pattern can easily reach the light receiving unit 110 even if the light receiving unit 110 has a small area.

10 is a flowchart illustrating a method of controlling a light receiving device 100 according to an embodiment of the present invention.

Referring to FIG. 10, first, the light receiving unit 110 receives a laser signal pattern (S1010).

When the laser signal pattern is received, the laser signal pattern is analyzed through the electrical signal converted in the light receiving unit 110 (S1020), and the pre-stored signal pattern is searched (S1030) to determine whether there is a pattern matching the analyzed laser pattern (S1040).

If there is no matching pattern (S1040-N), the process is terminated without proceeding to the next step. However, if there is a matching pattern (S1040-Y), the control code corresponding to the pattern is detected (S1050). Then, the transmitting unit 140 transmits the control signal corresponding to the detected control code to the external device (S1060), and the process ends.

As described above, according to one embodiment of the present invention, the user can easily control the remote controller using a laser pointer without having to search for and control the remote controller for a plurality of electronic devices. Thus, user convenience can be improved. The control method as shown in Fig. 10 can be executed on a light receiving device having the configuration of Fig. 1, and can also be executed on an electronic device having another configuration.

The control method according to the various embodiments described above may be coded by software and stored in a non-transitory readable medium. Such non-transiently readable media may be used in various devices and used.

A non-transitory readable medium is a medium that stores data for a short period of time, such as a register, cache, memory, etc., but semi-permanently stores data and is readable by the apparatus. Specifically, it may be a CD, a DVD, a hard disk, a Blu-ray disk, a USB, a memory card, a ROM, or the like.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

100: Light receiving device 110: Light receiving device
120: control unit 130:
140:

Claims (7)

In the light receiving device,
A light receiving unit for receiving a laser signal;
A storage unit storing a control code corresponding to each of a plurality of signal patterns;
A control unit for detecting a control code corresponding to a signal pattern of the received laser signal from the storage unit; And
And a transmission unit for transmitting a control signal corresponding to the detected control code to an external device. The method according to claim 1,
Wherein the signal pattern is a Morse code pattern expressed by a dash and a dot. The method according to claim 1,
Wherein the signal pattern is a pattern divided by at least one of a number of times of receiving the laser signal, a light receiving time, and an interval between light receiving times. The method according to claim 1,
Wherein the external device is an electronic device or a remote controller for controlling the electronic device. A method of controlling a light receiving device,
Receiving a laser signal;
Detecting from the storage unit a control code corresponding to a signal pattern of the received laser signal; And
And transmitting a control signal corresponding to the detected control code to an external device. 6. The method of claim 5,
Wherein the signal pattern is a Morse code pattern represented by a dash and a dot. 6. The method of claim 5,
Wherein the signal pattern is a pattern divided by at least one of the number of times of receiving the laser signal, the light receiving time, and the interval between the light receiving times.

KR1020130039079A 2013-04-10 2013-04-10 photodetector and photodetecing method thereof KR20140122428A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102000189B1 (en) * 2018-03-07 2019-07-17 박상우 Smart device control system using smart ring
US10720047B2 (en) 2015-11-11 2020-07-21 Samsung Electronics Co., Ltd. Electronic apparatus and method for controlling the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10720047B2 (en) 2015-11-11 2020-07-21 Samsung Electronics Co., Ltd. Electronic apparatus and method for controlling the same
KR102000189B1 (en) * 2018-03-07 2019-07-17 박상우 Smart device control system using smart ring

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