Mobile terminal such as mobile phone providing optical communication function by visible light

Abstract

To provide a mobile terminal such as a mobile phone, which can transmit and receive by an optical digital signal between the mobile terminals such as a mobile phone providing an optical communication function by a visible light using a light emitting diode or a light emitting element of an LED light, and a light reception element of a photo diode that receives the visible light.SOLUTION: A mobile terminal 10 such as a mobile phone in which one surface is a video image display surface, provides a light emission part 13 as a light source of an optical communication by a visible light to a circumference that becomes a back surface side 19 or a side surface of the video image display surface that makes a video image to be displayed, and a light reception part 14 that receives a light of the light communication by the visible light, provides an optical digital blink function for converting an electric signal such as a sound into a light signal on the light emission part 13, and provides a function for converting a digital light signal into an electric signal on the light reception part 14. Between the mobile terminals such as a mobile phone providing the light emission part and the light reception part, a transmission and a reception by an electric wave of a communication carrier such as a mobile phone carrier can be performed, and transmission and the reception of the sound or a character or the like by the optical communication can be performed without passing through the electric wave of the communication carrier.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a mobile terminal such as a mobile phone provided with an optical communication function using a light emitting element such as a light emitting diode or an LED light as a light source and a light receiving element of a photodiode that receives visible light, capable of transmitting and receiving optical digital signals between mobile terminals such as mobile phones.

Background Art

[0002] Conventionally, in the communication of mobile terminals such as mobile phones, wireless communication is mainly used. Communication between mobile terminals is performed via a base station of radio waves of a communication carrier. However, in communication at a very short distance such as indoors, communication using infrared rays is also used. Also, within a certain area such as indoors, In the communication between a communication terminal such as a mobile phone and a fixed main communication device, a communication method using visible light, There is also an example in which, when aligning the aiming direction of infrared rays for communication that is invisible to the human eye, eye-friendly visible light is provided at the light emitting part of the light emitting source to confirm the light emitting source from the direction of the light receiving part.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] The problem of the present invention is that in the communication between mobile terminals such as mobile phones, even at a distant location where the radio waves of the base station cannot reach and the conversation sound cannot reach, such as at sea or in the mountains, if it is a place where each other can visually confirm the location, it is an object to enable direct communication such as a call between the mobile terminals such as each other's mobile phones.

Means for Solving the Problems

[0005] In order to solve the above problems, the present invention adopts the following means.

[0006] In claim 1 of the present invention In a mobile terminal such as a mobile phone having one surface as a video display surface, On the back side 19 of the video display surface for displaying the video of the mobile terminal such as a mobile phone or on the surrounding side surface, a light emitting unit 13 which is a light source for optical communication by visible light and a light receiving unit 14 for receiving the light of optical communication by visible light are provided. The light emitting unit 13 is provided with an optical digital blinking function for converting an electrical signal such as voice into an optical signal. The light receiving unit 14 is provided with a function for converting the digital optical signal into an electrical signal. Together with the transmission and reception by radio waves of a communication carrier such as a mobile phone carrier, Between the mobile terminals such as mobile phones provided with the light emitting unit 13 and the light receiving unit 14, Without passing through the radio waves of the communication carrier, It is a mobile terminal such as a mobile phone equipped with an optical communication function characterized in that transmission and reception of voice, characters, etc. by optical communication can be performed.

[0007] This is especially designed to improve the utilization of mobile phone terminals. On the wide surface on the back side of one video display surface which is the wide surface on the front and back of the mobile phone terminal, Or on the surrounding part which is a narrow surface, By providing a visible light transmitting and receiving unit 15 composed of a light receiving unit 14 of a photodiode with an optical communication compatible function and a light emitting unit 13 of a light emitting diode or an LED light, the communication environment is expanded by newly using optical communication together with the conventional wireless communication. Even if one gets lost in the mountains where radio waves cannot reach, if one is visually discovered by companions or rescue team members from a distance, the situation can be confirmed by a call using optical communication. It is also useful for communication between mountaineers during separate actions or between ships at sea. Furthermore, even within the radio range of the base station, if the environment allows for visual confirmation between each other, communication can be achieved through optical communication instead of radio, and communication with distant parties is particularly possible at night.

[0008] Also, a conventional general - function camera 17 may be used as the light - receiving unit 14 and an LED light 18 may be used as the light - emitting unit 13. Furthermore, it may be optical communication of visible light in which the light - emitting unit 13 of the light - emitting diode and the conventional LED 18 light are simultaneously blinked with a digital signal to intensify the light source. Next, when the visible - light transceiver 15 is provided on the narrow side surface around the mobile phone, It may be a detachable transceiver part of a single separate component and attached each time it is needed.

[0009] Claim 2 of the present invention is In claim 1, In order to prevent the leakage of communication content to outsiders other than the parties involved in optical communication such as calls made by the mobile terminal such as a mobile phone equipped with an optical communication function, Communication content such as voice and text The parties involved in the optical communication Each time or in advance, operate and set their own mobile terminal such as a mobile phone by themselves so that the communication content between the parties can be encrypted according to an encryption law determined by themselves. Using the list of phonetic characters, list of characters, list of numbers, list of symbols, etc. as their respective base lists, or combining the list of characters, list of numbers, list of symbols, etc. excluding the list of phonetic characters into one base list, or combining them into a plurality of base lists, Swapping the order of rows and columns in each of these base lists, or swapping the positions of individual phonetic characters, characters, numbers, symbols, etc. Provide the mobile terminal such as a mobile phone with a new function of creating an encryption list that can be created by the parties themselves for each of these base lists. When the parties speak during communication, the voice is automatically identified and phonetic - character - ized by using the character position corresponding to the phonetic characters in the phonetic - character base list as position data. Convert a series of position data of the base list of specific phonetic character positions, characters, numbers, symbols, etc. into phonetic characters, characters, numbers, symbols, etc. at the same positions in the prepared encrypted list, so that it can be transmitted by digital optical communication, On the mobile terminal side such as the mobile phone of the party on the receiving side of the digital optical communication, Based on the base list and the encrypted list previously determined between the parties, Convert the phonetic characters, etc. of the received encrypted list being converted back to the phonetic characters, automatic voices, characters, numbers, symbols, etc. of the position data of the original base list so that words, characters, etc. can be displayed by voice. It is a mobile terminal such as a mobile phone equipped with an optical communication function characterized by this.

[0010] It is desirable to make the communication between the mobile terminals such as the mobile phones equipped with the optical communication function common so that any two terminals can communicate with each other at any time. However, In each communication, considerations such as privacy and confidential matters are also necessary. Therefore, It is provided with an encryption communication setting function only between the parties. Also, a selection function for performing voice conversion so that the gender, etc. becomes unclear in the voice of the party during a call may be provided. Furthermore, in order to make the voice of the caller that the receiver will hear as close as possible to the original voice, it is preferable to register the voice of the caller on the mobile terminal such as the other party's mobile phone in advance and make the voice from the terminal be pronounced in a voice close to the registered voice. Also, phonetic characters of pronunciation may be displayed on the video display surface. Next, it is desirable to include a Chinese character base list such as Chinese characters used in this application in the base list.

[0011] Claim 3 of the present invention is In claim 1, For the digital optical communication signal from another mobile terminal such as the mobile phone, Regarding the content of the digital optical communication signal, When there is a signal addressed to oneself, such as one's own phone number or PIN number, A mobile terminal such as a mobile phone equipped with an optical communication function is provided with a function for checking whether a signal is a communication signal addressed to oneself. This is to enable response only to signals addressed to oneself.

[0012] This is to enable response only to signals addressed to oneself. In this function for checking the incoming signal addressed to oneself, it is also necessary to provide a function for selecting and determining the start of mutual communication and a function for notifying the incoming call with an incoming call tone or the like.

[0013] In claim 4 of the present invention, In claim 1, When necessary, a through cylinder for preventing the light of the digital optical communication on one's own side from diffusing around the target is provided as a cylindrical cap 20 that covers the light emitting part and the light receiving part 14 like binoculars, The cylindrical cap 20 is directed like binoculars in the direction of the other mobile terminal such as the other mobile phone, and the signal light of the optical communication of the other party can be seen by the light receiving part 14 on one's own side, Furthermore, a mobile terminal such as a mobile phone equipped with an optical communication function is characterized in that the cylindrical cap 20 can be set on the mobile terminal such as the mobile phone on one's own side so that the signal of the digital optical communication on one's own side can be seen on the mobile terminal side of the other party such as the other mobile phone.

[0014] This is to provide a through cylinder as a cylindrical cap 20 that covers the light receiving part 14 and the light emitting part 13 of the transceiver unit 15 composed of the light receiving part 14 and the light emitting part 13 on the back surface of the opposite side of the video display surface to prevent the light of the digital optical communication of the light emitting part 13 on one's own side from diffusing around the target, The cylindrical cap 20 is directed like binoculars in the direction of the mobile terminal such as the mobile phone of the other party, So that only the signal light of the optical communication of the other party can be seen by the light receiving part 14 on one's own side as much as possible, Furthermore, the cylindrical cap 20 is set on a mobile terminal such as a mobile phone on one's own side so that a signal of digital optical communication on one's own side can be seen on the other party's mobile terminal such as a mobile phone. It is designed to prevent the communication content from being known to a third party as much as possible. In this case, the tip of the cylindrical cap 20 may be made to taper in advance to reduce the back reflection toward the outside of the inner tip portion. Furthermore, a lens may be provided in the through-hole portion on the light-emitting unit 13 side in the cylindrical cap 20 to form a beam without diffusing the light.

[0015] Claim 5 of the present invention is An intercom terminal without the video display screen installed on the outer wall of a residence or the like is Provided as an intercom terminal capable of optical communication using visible light provided with the transceiver unit 15 composed of the light-receiving unit 14 and the light-emitting unit 13 or as an intercom terminal dedicated to the optical communication using visible light, An intercom terminal 26 equipped with an optical communication function characterized in that communication with a mobile terminal such as a mobile phone of the present invention can be performed by visible light.

[0016] This is effective in home delivery by a drone 30 equipped with a mobile terminal such as a mobile phone of the present invention or an automatically driven vehicle, The installation location is preferably the upper part of a wall that does not receive sunlight, such as under the eaves or on the north side of the house.

Advantages of the Invention

[0017] As an effect of the present invention, the communication means of a mobile terminal such as a mobile phone can be selected from two types of communication means, wireless communication and optical communication, An expanded communication environment and a smooth infrastructure society are configured for mobile communication terminals with an optical communication function.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0019] In claims 1 to 4 of the present invention, A mobile terminal such as a mobile phone is provided with a light receiving and transmitting unit 15 composed of a light receiving unit and a light emitting unit for visible light so that optical communication can be performed by visible light. In claim 5, An intercom terminal provided in a house is made capable of optical communication by visible light to achieve automation of article conveyance.

Examples

[0020] Figure 1 is A figure that shows, in part as a block diagram, an example in which a mobile terminal A such as a mobile phone on the left side and a mobile terminal B such as a mobile phone on the right side are performing communication by voice calls, characters, etc. using an optical digital signal by visible light. The light receiving and emitting unit 15 composed of the respective elements of the light receiving unit 14 and the light emitting unit 13 of the optical signal communication unit of the mobile terminal A such as a mobile phone on the left side and the light receiving and emitting unit 15 of the optical signal communication unit of the mobile terminal B such as a mobile phone on the right side An image diagram showing that in an environment where visibility is possible, the light transmission and reception units 15 face each other and communication is carried out using optical digital signals. In the enlarged left mobile terminal A diagram such as a mobile phone, a block diagram of each functional unit of optical signal communication and wireless communication and the functions necessary for a mobile terminal such as a mobile phone is shown. Furthermore, a wireless base station of a communication carrier is shown at the far left.

[0021] Figure 2 is An image diagram in which a light transmission and reception unit 15 is provided on the back surface 19 side of the video display surface 12 of the mobile phone terminal 10 of the present invention. A transmission and reception unit 15 composed of a light emitting unit 13 which is a light source for optical communication by visible light and a light receiving unit 14 which receives the light of optical communication by the visible light is provided in the upper left. A camera 17 and an LED light 18 are provided on the right side.

[0022] Figure 3 is Similar to Figure 2, it shows the back surface 19 side of the video display surface 12 of the mobile phone terminal 10 of the present invention. The transmission and reception unit 15 composed of the light emitting unit 13 and the light receiving unit 14 is made into a detachable transmission and reception unit 16 that can swing back and forth, It is configured such that only the transmission and reception unit 15 can be swung and rotated in the direction of the communication partner.

[0023] Figure 4 is Similar to Figure 1, it is a diagram in which the left mobile phone terminal A and the right mobile phone terminal B are communicating using optical digital signals by visible light. A basic list of kana, symbols, numbers, etc., which is encryption software for keeping the communication content secret, And an encryption list that can be created by the user himself / herself by swapping columns, rows, or individual elements of the basic list is shown. The basic list itself is set so that it cannot be swapped or changed. After the change, it is newly created and stored as an encrypted list, and can also be transmitted in advance to the communication partner by wireless communication or optical signal communication and made known. Also, when transmitting as a single sound using kana characters such as (っ), (ょ), (ぇ), (ゃ) in Japanese or the phonetic representation of other homophonous languages, measures such as slightly changing the pitch of the corresponding uppercase characters or the like, which are the same sound, are taken to enable identification and then transmitted. The reproduction of voice, etc. shall be by software technology such as AI.

[0024] The creation of encryption tables is to create respective encryption tables for each basic table of kana characters, symbols, numbers, etc. When specifying and touching the ↓ at the upper part of the vertical column or the → at the beginning of the horizontal row of the basic table with a finger or an operating rod, etc. and dragging, while in the dragged state, move to any position of the ↓ at the upper part of the same column or the → at the beginning of the same horizontal row and release from the dragged state to move to the release position. The other columns of the interrupted vertical or horizontal rows move by being dragged and shifted towards the original position that has become blank. In the case of replacing individual characters one by one, Touch a single character, etc. and move it in the dragged state, and when releasing the grip state at the position of another character, etc., move it to that position, and at the same time, the single character, etc. that was originally at that position is replaced with the single character, etc. that has been dragged and moved to the original position.

[0025] In this Figure 4, first, the words spoken by the person on the left are picked up by the microphone of mobile phone A, converted into an electrical signal, and connected to the encryption function unit. Next, in the encryption function unit, the individual sounds of the words picked up by the microphone are specified at the kana character positions of the kana character basic table by voice recognition software. Next, the electrical signal of the voice converted by voice estimation creation software to the sound of the kana character at the same position in the kana character encryption table at the specified position is connected to the optical signal communication function unit. The light emitting element of the light emitting part of the optical signal communication function unit converts the electrical signal into an optical signal of visible light and emits an optical digital signal.

[0026] On the right mobile phone B that receives the optical digital signal of the left mobile phone A by the light receiving part of the optical signal communication function unit, For each individual sound of the received voice data, it identifies the position in the list for phonetic character encryption on the sender's side that is the same as the sound, and converts the sound at the position of the phonetic text in the basic list of phonetic characters using voice estimation creation software so as to approximate the original voice, and causes it to be pronounced from a speaker or the like as a generated sound.

[0027] FIG. 5 is A cylindrical cap 20 for preventing the light of the visible light ray according to claim 4 from diffusing to the surroundings, The procedure of inserting the tip of the cylindrical cap 20 into the cylindrical cap insertion groove 22 provided around the transceiver unit 15 at the upper part of the back surface 19 of the mobile phone terminal 10 is shown in the side views of (a) and (b), and (c) is a rear view. It shows that a cylindrical cap opening 21 through which the light of the transceiver unit 15 passes is provided on the left side of the back surface 19 in a two-stage structure in the vertical direction inside the cylindrical cap 20 and in the tapered opening part at the tip of the tip part. The camera 17 and the LED light 18 are shown on the right side of the back surface 19.

[0028] FIG. 6 is An image diagram showing communication by visible light 40 using the wall-mounted intercom terminal 26 for optical communication attached to the wall at the upper part of the building instead of the entrance-side intercom terminal 25 provided in the house 50 according to claim 5 and the mobile terminal 11 of the present invention mounted on the drone 30. An image diagram showing communication of an optical signal 40 by visible light between the transceiver unit 15 of the wall-mounted intercom terminal 26 for optical communication attached to the north wall surface under the roof 51 of the house 50 and the transceiver unit 15 provided facing the video display surface 12 side of the mobile terminal 11 of the drone 30, showing that it is installed at a higher position than the entrance intercom 25. There is a box 32 for storing luggage at the lower part of the drone body 31 with the video display surface 12 of the mobile terminal 11 facing the front side.

Industrial Applicability

[0029] By providing two communication means, namely optical communication in addition to wireless communication which is a communication means of a conventional mobile phone terminal, It can contribute to the increasing communication demand in the future and is useful for the development of the industry.

Explanation of symbols

[0030] 10 Mobile phone 11 Mobile terminal 13 Light emitting part (light emitting element such as light emitting diode or LED light) 14 Light receiving part (light receiving element such as photodiode) 15 Transceiving part (composed of light emitting part and light receiving part) 16 Detachable transceiving part (head shaking type) 17 Camera 18 LED light 19 Back surface of mobile phone (opposite side of video display surface) 20 Cylindrical cap 21 Cylindrical cap opening 26 Intercom terminal with wall for optical communication 30 Drone

Claims

1. In a mobile terminal such as a mobile phone with one side as a video display surface, a light emitting part which is a light source for optical communication by visible light and a light receiving part which receives light for optical communication by visible light are provided on the back side of the video display surface for displaying the video of the mobile terminal such as a mobile phone or on the surrounding sides which become side surfaces, the light emitting part is provided with an optical digital blinking function for converting an electrical signal such as voice into an optical signal, the light receiving part is provided with a function for converting the digital optical signal into an electrical signal, together with transmission and reception by radio waves of a communication carrier such as a mobile phone carrier, between mobile terminals such as mobile phones provided with the light emitting part and the light receiving part, without passing through the radio waves of the communication carrier, so that transmission and reception of voice, characters, etc. by optical communication can be performed, A mobile terminal such as a mobile phone equipped with an optical communication function, characterized in the above.

2. In Claim 1, In order to prevent leakage of communication content to an outsider other than the parties involved in optical communication such as a call performed by the mobile terminal such as a mobile phone equipped with an optical communication function, the communication content such as voice and characters, by the parties involved in the optical communication, each time or in advance, the parties themselves operate and set their own mobile terminal such as a mobile phone so that the communication content between the parties can be encrypted by an encryption law determined by themselves, using the list of phonetic characters, list of characters, list of numbers, list of symbols, etc. as their respective base lists, or combining the list of characters, list of numbers, list of symbols, etc. excluding the list of phonetic characters into one base list, or combining them into a plurality of base lists, exchanging the order of horizontal and vertical rows in each of the base lists and exchanging the positions of individual phonetic characters, characters, numbers, symbols, etc., the mobile terminal such as a mobile phone is provided with a new creation function of an encryption list that can be created by the parties themselves for each of the base lists, the voice uttered by the parties during the execution of communication is automatically specified with the character position corresponding to the phonetic characters in the phonetic character base list as position data and converted into phonetic characters, a series of position data of the specified phonetic character positions, characters, numbers, symbols, etc. in the base list, is converted into phonetic characters, characters, numbers, symbols, etc. at the same positions in the created encryption list, so that it can be transmitted by digital optical communication, on the mobile terminal side of the parties on the receiving side of the digital optical communication, based on the base list and the encryption list determined in advance between the parties, The kana characters, etc. of the encrypted list being converted and received are restored to the kana characters, words, numbers, symbols, etc. of the original position data of the base list so that words, characters, etc. can be displayed by voice. A mobile terminal such as a mobile phone equipped with an optical communication function, characterized by the above.

3. In Claim 1, For a digital optical communication signal from another mobile terminal such as a mobile phone, Regarding the content of the digital optical communication signal, When there is a signal addressed to oneself, such as one's own phone number or password, A function is provided to confirm whether it is a communication signal addressed to oneself. A mobile terminal such as a mobile phone equipped with an optical communication function, characterized by the above.

4. In Claim 1, When necessary, a through cylinder is provided as a cylindrical cap to cover the light emitting part and the light receiving part to prevent the light of the digital optical communication on one's own side from diffusing to the surrounding outside the target. The cylindrical cap is directed towards the direction of another mobile terminal such as a mobile phone on the other side like binoculars so that the signal light of the optical communication on the other side can be seen by the light receiving part on one's own side. Furthermore, the cylindrical cap can be set on the mobile terminal such as a mobile phone on one's own side so that the signal of the digital optical communication on one's own side can be seen on the other mobile terminal side of the other party. A mobile phone mobile terminal equipped with an optical communication function, characterized by the above.

5. An intercom terminal without a video display screen installed on the outer wall of a residence, etc. It is provided as an intercom terminal capable of optical communication by visible light provided with a transmitting and receiving part composed of the light receiving part and the light emitting part, or as an intercom terminal dedicated to the optical communication by visible light. It is made possible to communicate by visible light with the mobile terminal such as a mobile phone of the present invention. An intercom terminal equipped with an optical communication function, characterized by the above.

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