Communication device and method

Abstract

The present invention relates to a method of using a combination of non-standard sub-audio codes and dual-tone multi-frequency DTMF codes for identity recognition. Due to the stability of the non-standard sub-audio codes and the rich number of codes available (i.e., 2 23 The combination of a pre-set sub-audio code (the pre-set sub-audio code is different from the non-standard sub-audio code) and a dual-tone multi-frequency DTMF code can make the private identity of the communication device clearer, so that the possibility of co-frequency interference between similar communication devices is greatly reduced. In addition, by using a combination of a pre-set sub-audio code (the pre-set sub-audio code is different from the non-standard sub-audio code) and a dual-tone multi-frequency DTMF code as a public identity identification mark of a group of communication devices, and arranging the group of communication devices to receive the sub-audio signal represented by the pre-set sub-audio code, one-to-many communication can be achieved.

Description

Technical Field

[0001] The present invention relates to a communication device and method. Specifically, the present invention relates to a communication device and method for performing identity recognition by combining a non-standard sub-audio code with a dual tone multi-frequency (DTMF) code. Background Art

[0002] In the prior art, wireless doorbells and pagers use wireless coding. For example, an example of wireless coding known in the prior art is to perform frequency shift keying FSK encoding of a valid address and some valid data information for communication. Both wireless doorbells and pagers use a host and a slave to operate. For example, when a wireless doorbell slave sends a call request to a wireless doorbell host, it sends an address code and a corresponding signal.

[0003] Similar wireless doorbells in the prior art are prone to co-frequency interference when multiple devices are enabled at the same time, i.e., identity ambiguity. That is, in the case of dense layout, pressing the doorbell of resident No. 1 may cause the doorbell of resident No. 2 to respond. In addition, wireless doorbells are mostly suitable for single-family units and cannot be used for one-to-many intercoms.

[0004] The pagers in the prior art also have similar problems. Summary of the invention

[0005] The present invention provides a communication device and method. The communication device and method of the present invention use a combination of non-standard sub-audio codes and dual-tone multi-frequency DTMF codes for identity recognition. Due to the stability of the non-standard sub-audio codes and the rich number of codes available for encoding (i.e., 2 23 The combination of a pre-set sub-audio code (the pre-set sub-audio code is different from the non-standard sub-audio code) and a dual-tone multi-frequency DTMF code can make the private identity of the communication device clearer, so that the possibility of co-frequency interference between similar communication devices is greatly reduced. In addition, by using a combination of a pre-set sub-audio code (the pre-set sub-audio code is different from the non-standard sub-audio code) and a dual-tone multi-frequency DTMF code as a public identity identification mark of a group of communication devices, and arranging the group of communication devices to receive the sub-audio signal represented by the pre-set sub-audio code, one-to-many communication can be achieved.

[0006] According to a first aspect of the present invention, there is provided a communication device, wherein the communication device uses a combination of a non-standard sub-audio code and a dual-tone multi-frequency code as a private identity identification mark.

[0007] Due to the stability of non-standard sub-audio codes and the rich number of codes available (i.e., 2 23The combination of a recognizable identity mark and dual-tone multi-frequency code can make the identity identification of communication equipment clearer, greatly reducing the possibility of co-frequency interference between similar communication devices.

[0008] According to a preferred embodiment of the communication device of the present invention, the non-standard sub-audio code is a 23-bit binary code.

[0009] According to a preferred embodiment of the communication device of the present invention, the dual tone multi-frequency code is a 4-bit binary code.

[0010] According to a preferred embodiment of the communication device of the present invention, the communication device is capable of transmitting and receiving the non-standard sub-audio signal represented by the non-standard sub-audio code.

[0011] According to a preferred embodiment of the communication device of the present invention, a plurality of the communication devices use a combination of a preset sub-audio code and a dual-tone multi-frequency code as a public identity identification mark, and are capable of receiving a sub-audio signal represented by the preset sub-audio code, wherein the preset sub-audio code is different from the non-standard sub-audio code.

[0012] With the help of public identification tags, one-to-many communication can be achieved between communication devices.

[0013] According to a preferred embodiment of the communication device of the present invention, the number of the communication devices using the combination of the preset sub-audio code and dual-tone multi-frequency code as a public identity identification mark is determined according to the application scenario and the geographical location.

[0014] According to a preferred embodiment of the communication device of the present invention, the communication device is a wireless doorbell.

[0015] According to a preferred embodiment of the communication device of the present invention, the wireless doorbells having the same private identity identification mark are respectively a master wireless doorbell and a slave wireless doorbell.

[0016] According to a preferred embodiment of the communication device of the present invention, the master wireless doorbell accepts the call request to establish a call in response to receiving the call request sent by the slave wireless doorbell, and the master wireless doorbell actively or passively ends the call with the slave wireless doorbell after talking with the slave wireless doorbell for a period of time; or, the master wireless doorbell rejects the call request in response to receiving the call request sent by the slave wireless doorbell.

[0017] According to a preferred embodiment of the communication device of the present invention, a plurality of the master wireless doorbells use a combination of a preset sub-audio code and a dual-tone multi-frequency code as a public identity identification mark, and are capable of receiving a sub-audio signal represented by the preset sub-audio code, wherein the preset sub-audio code is different from the non-standard sub-audio code.

[0018] According to a preferred embodiment of the communication device of the present invention, the number of the plurality of wireless doorbells using the combination of the preset sub-audio code and dual-tone multi-frequency code as a public identity identification mark is determined according to the application scenario and the geographical location.

[0019] According to a preferred embodiment of the communication device of the present invention, the communication device is a pager.

[0020] According to a preferred embodiment of the communication device of the present invention, a call request is sent from a caller to a master caller; the call request at least includes a combination of a non-standard sub-audio signal represented by a non-standard sub-audio code in a private identity identification mark of the slave caller and a dual-tone multi-frequency signal represented by a dual-tone multi-frequency code in the private identity identification mark of the slave caller.

[0021] According to a preferred embodiment of the communication device of the present invention, in response to receiving a call request from the slave caller, the master caller decodes the non-standard sub-audio code and dual-tone multi-frequency code in the call request to display the private identity identification mark of the slave caller.

[0022] According to a preferred embodiment of the communication device of the present invention, the main caller accepts the call request, adjusts the settings and transmits the received non-standard sub-audio signal in response to receiving the call request sent by the slave caller, thereby establishing a call; or the main caller rejects the call request in response to receiving the call request sent by the slave caller.

[0023] According to a preferred embodiment of the communication device of the present invention, the master caller actively or passively ends the call with the slave caller after talking with the slave caller for a period of time.

[0024] According to a preferred embodiment of the communication device of the present invention, before sending a call request, the slave caller determines whether the master caller is in a call by receiving a signal strength indication; and in response to the master caller being in a call, the slave caller abandons sending the call request.

[0025] According to a preferred embodiment of the communication device of the present invention, a plurality of said slave callers use a combination of a preset sub-audio code and a dual-tone multi-frequency code as a public identity identification mark, and are capable of receiving a sub-audio signal represented by the preset sub-audio code, wherein the preset sub-audio code is different from the non-standard sub-audio code.

[0026] According to a preferred embodiment of the communication device of the present invention, the number of the plurality of slave pagers using the combination of the preset sub-audio code and dual-tone multi-frequency code as a public identity identification mark is determined according to the application scenario and the geographical location.

[0027] According to a preferred embodiment of the communication device of the present invention, the slave caller is implemented by a doorbell, and the master caller sends a command to the doorbell to control the door.

[0028] According to a preferred embodiment of the communication device of the present invention, the communication device is a walkie-talkie.

[0029] According to a second aspect of the present invention, there is provided a communication method between communication devices, the communication method comprising:

[0030] The communication device is configured to use a combination of a non-standard sub-audio code and a dual-tone multi-frequency code as a private identity identification mark.

[0031] According to a preferred embodiment of the communication method of the present invention, the non-standard sub-audio code is a 23-bit binary code.

[0032] According to a preferred embodiment of the communication method of the present invention, the dual-tone multi-frequency code is a 4-bit binary code.

[0033] According to a preferred embodiment of the communication method of the present invention, the communication method further comprises: configuring the communication device to be capable of transmitting and receiving the non-standard sub-audio signal represented by the non-standard sub-audio code.

[0034] According to a preferred embodiment of the communication method of the present invention, the communication method further comprises: arranging a plurality of the communication devices to jointly use a combination of a preset sub-audio code and a dual-tone multi-frequency code as a public identity identification mark, and arranging them to be able to receive a sub-audio signal represented by the preset sub-audio code, wherein the preset sub-audio code is different from the non-standard sub-audio code.

[0035] According to a preferred embodiment of the communication method of the present invention, the communication method further comprises: determining the number of the plurality of communication devices using the combination of the preset sub-audio code and dual-tone multi-frequency code as a public identity identification mark according to the application scenario and the geographical location.

[0036] According to a preferred embodiment of the communication method of the present invention, the communication method further comprises: using a wireless doorbell as the communication device.

[0037] According to a preferred embodiment of the communication method of the present invention, the communication method further comprises: using two wireless doorbells having the same private identity identification mark as a master wireless doorbell and a slave wireless doorbell respectively.

[0038] According to a preferred embodiment of the communication method of the present invention, the communication method further includes: the master wireless doorbell accepts a call request to establish a call in response to receiving a call request sent by the slave wireless doorbell, and the master wireless doorbell actively or passively ends the call with the slave wireless doorbell after talking with the slave wireless doorbell for a period of time; or, the master wireless doorbell rejects the call request in response to receiving the call request sent by the slave wireless doorbell.

[0039] According to a preferred embodiment of the communication method of the present invention, the communication method further comprises: arranging a plurality of the master wireless doorbells to commonly use a combination of a preset sub-audio code and a dual-tone multi-frequency code as a public identity identification mark, and arranging them to be able to receive a sub-audio signal represented by the preset sub-audio code, wherein the preset sub-audio code is different from the non-standard sub-audio code.

[0040] According to a preferred embodiment of the communication method of the present invention, the communication method further comprises: determining the number of the plurality of wireless doorbells using the combination of the preset sub-audio code and dual-tone multi-frequency code as a public identity identification mark according to the application scenario and the geographical location.

[0041] According to a preferred embodiment of the communication method of the present invention, a pager is used as the communication device.

[0042] According to a preferred embodiment of the communication method of the present invention, the communication method also includes: sending a call request from the caller to the master caller; the call request at least includes a combination of a non-standard sub-audio signal represented by a non-standard sub-audio code in the private identity identification mark of the slave caller and a dual-tone multi-frequency signal represented by a dual-tone multi-frequency code in the private identity identification mark of the slave caller.

[0043] According to a preferred embodiment of the communication method of the present invention, the communication method also includes: the master caller, in response to receiving a call request from the slave caller, decodes the non-standard sub-audio code and dual-tone multi-frequency code in the call request to display the private identity identification mark of the slave caller.

[0044] According to a preferred embodiment of the communication method of the present invention, the communication method also includes: the main caller, in response to receiving a call request sent by the slave caller, accepts the call request, adjusts settings and transmits with the received non-standard sub-audio signal to establish a call; or, the main caller, in response to receiving a call request sent by the slave caller, rejects the call request.

[0045] According to a preferred embodiment of the communication method of the present invention, the communication method further comprises: after the master caller has been talking with the slave caller for a period of time, the master caller actively or passively ends the call.

[0046] According to a preferred embodiment of the communication method of the present invention, the communication method also includes: before the slave caller sends a call request, the slave caller determines whether the master caller is in a call by receiving a signal strength indication; and, in response to the master caller being in a call, the slave caller abandons sending the call request.

[0047] According to a preferred embodiment of the communication method of the present invention, the communication method also includes: arranging multiple slave pagers to commonly use a combination of a preset sub-audio code and a dual-tone multi-frequency code as a public identity identification mark, and arranging them to be able to receive a sub-audio signal represented by the preset sub-audio code, wherein the preset sub-audio code is different from the non-standard sub-audio code.

[0048] According to a preferred embodiment of the communication method of the present invention, the communication method further comprises: determining the number of the plurality of slave pagers using the combination of the preset sub-audio code and dual-tone multi-frequency code as a public identity identification mark according to the application scenario and the geographical location.

[0049] According to a preferred embodiment of the communication method of the present invention, the slave caller is implemented through a doorbell, and the master caller sends a command to the doorbell to control the door.

[0050] According to a preferred embodiment of the communication method of the present invention, an intercom is used as the communication device.

[0051] According to a third aspect of the present invention, there is provided a computer-readable storage medium on which a computer program code is stored. When the computer program code is executed on a computer, the computer executes the communication method according to any one of claims 22 to 42.

[0052] Those skilled in the art should understand that the second and third aspects of the present invention can achieve the technical effects described in relation to the first aspect of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The present invention will be more easily understood through the following description in conjunction with the accompanying drawings, in which:

[0054] Figure 1 A flow chart of a one-to-one conversation with the wireless doorbell according to the present invention.

[0055] Figure 2 A flow chart of conducting a one-to-many call with the wireless doorbell according to the present invention.

[0056] Figure 3 The present invention is a flowchart of a one-to-one call performed by a pager.

[0057] Figure 4 The present invention is a flowchart of a pager for conducting a one-to-many call.

[0058] It should be understood that these drawings are for illustration purposes only. DETAILED DESCRIPTION

[0059] The embodiments of the present invention are described in further detail below.

[0060] The general idea of ​​the present invention is to use a combination of non-standard sub-audio codes and dual-tone multi-frequency DTMF codes for identity recognition. 23 The combination of a pre-set sub-audio code (the pre-set sub-audio code is different from the non-standard sub-audio code) and a dual-tone multi-frequency DTMF code can make the private identity of the communication device clearer, so that the possibility of co-frequency interference between similar communication devices is greatly reduced. In addition, by using a combination of a pre-set sub-audio code (the pre-set sub-audio code is different from the non-standard sub-audio code) and a dual-tone multi-frequency DTMF code as a public identity identification mark of a group of communication devices, and arranging the group of communication devices to receive the sub-audio signal represented by the pre-set sub-audio code, one-to-many communication can be achieved.

[0061] Sub-audio is a technology that adds a frequency lower than the audio frequency (67Hz-254.1Hz) to the audio signal for transmission. Since the frequency range is below the frequency range of standard audio, it is called sub-audio. Most walkie-talkies use 38 groups of standard sub-audio, that is, 38 fixed sub-audio points are selected between 67Hz-254.1Hz. Sub-audio that is not in these standard sub-audio is called non-standard sub-audio. There are 23 non-standard sub-audio bits, a total of 2 23 , far more than the number of standard sub-audio frequencies.

[0062] In the present invention, communication equipment includes but is not limited to wireless doorbells, pagers, intercoms, etc. Figure 1-4 The embodiments of the present invention will be described in further detail.

[0063] -Wireless doorbell

[0064] In the present invention, the wireless doorbell uses a combination of a non-standard sub-audio code and a dual-tone multi-frequency code as a private identity identification mark when it leaves the factory. The master wireless doorbell and the slave wireless doorbell having the same private identity identification mark cooperate to operate.

[0065] The non-standard sub-audio code is represented by 23 bits in binary code, that is, there are 2 23 The DTMF code is represented by 4 bits in binary, that is, there are 2 4 If the wireless doorbell uses a combination of non-standard sub-audio codes and dual-tone multi-frequency codes as a private identification mark, and if the private identification mark of the master wireless doorbell is "01010111110101011110101010101, then the private identification mark of the slave wireless doorbell that cooperates with it is also "01010111110101010111101010101".

[0066] The normal operation steps of the wireless doorbell for "one-to-one communication" are as follows:

[0067] Step 11: Send a call request from the wireless doorbell, such as sending a call request via a wireless transmitter.

[0068] Step 12: The master wireless doorbell determines whether the private identification mark of the slave wireless doorbell is the same as that of the master wireless doorbell.

[0069] If they are different, the call request is rejected in step 13. If they are the same, the call request is accepted in step 14.

[0070] In addition, like the prior art, after receiving the call request, the main wireless doorbell can emit a ringing prompt tone to prompt that the call request has been received.

[0071] If the master wireless doorbell accepts the call request, it turns on the speaker for normal conversation. After the master wireless doorbell has been talking to the slave wireless doorbell for a period of time, the master wireless doorbell can actively end the call. Or when there is no communication between the master wireless doorbell and the slave wireless doorbell for a period of time, the master wireless doorbell passively ends the call.

[0072] In addition, a group of multiple master wireless doorbells use a combination of a preset sub-audio code and a dual-tone multi-frequency code as a public identity identification mark, and are capable of receiving a sub-audio signal represented by the preset sub-audio code, wherein the preset sub-audio code is different from the non-standard sub-audio code.

[0073] In addition, the number of the plurality of wireless doorbells using the combination of the preset sub-audio code and the dual-tone multi-frequency code as a public identity identification mark can be determined according to the application scenario and the geographical location.

[0074] In a one-to-many communication between a console and a group of multiple wireless doorbells:

[0075] Step 21: The control console transmits a sub-audio signal represented by a preset sub-audio code. The preset sub-audio signal can be either a standard sub-audio signal or a non-standard sub-audio signal, as long as the preset sub-audio signal is different from the sub-audio signal represented by the non-standard sub-audio code in the private identification mark of the wireless doorbell.

[0076] Step 22: A group of multiple wireless doorbells using the combination of the pre-set sub-audio code and dual-tone multi-frequency code as a public identity mark receives the sub-audio signal. Since the public identity mark is manually pre-set in the group of multiple wireless doorbells, or is pre-set when the group of multiple wireless doorbells leave the factory, the group of multiple wireless doorbells can receive the sub-audio signal. It should be noted that the group of multiple wireless doorbells share a public identity mark for use in this "one-to-many communication". Different groups have different public identity marks to distinguish different scenarios and regions.

[0077] In addition, a wireless doorbell that does not have the public identification mark cannot receive the preset sub-audio signal.

[0078] Thus, one-to-many communication between the control console and a group of multiple wireless doorbells is achieved.

[0079] -pager

[0080] In the present invention, the pager uses a combination of a non-standard sub-audio code and a dual-tone multi-frequency code as a private identity identification mark when it leaves the factory. The master pager and the slave pager cooperate in operation.

[0081] In the present invention, the slave caller uses a combination of a non-standard sub-audio code and a dual-tone multi-frequency code as a private identity identification mark. The master caller can selectively use a combination of a non-standard sub-audio code and a dual-tone multi-frequency code as a private identity identification mark. Usually, in a group of callers, there are multiple slave callers and one master caller.

[0082] The coding method of the pager is similar to that of the above-mentioned "wireless doorbell" and will not be repeated here.

[0083] The normal operation steps of the pager for "one-to-one communication" are as follows:

[0084] Step 31: The slave caller sends a call request to the master caller. The slave caller uses a combination of a non-standard sub-audio code and a dual-tone multi-frequency code as a private identity identification mark.

[0085] The slave caller uses a combination of a non-standard sub-audio code and a dual-tone multi-frequency code as an identification mark, and the call request at least includes a combination of a non-standard sub-audio signal represented by the non-standard sub-audio code in the private identification mark of the slave caller and a dual-tone multi-frequency signal represented by the dual-tone multi-frequency code in the private identification mark of the slave caller. For example, if the non-standard sub-audio code in the private identification mark of the slave caller is "01010111110101011110101" and the dual-tone multi-frequency code in the private identification mark of the slave caller is "0101", then the call request should at least include a combination of a non-standard sub-audio signal represented by the non-standard sub-audio code "0101011111010101011110101" and a dual-tone multi-frequency signal represented by the dual-tone multi-frequency code "0101".

[0086] Step 32: The main caller receives the call request to determine whether to accept the call request or reject the call request.

[0087] The caller rejects the call request in step 33 or accepts the call request in step 34 .

[0088] As in the prior art, after receiving a call request, the main caller can emit a ringing prompt tone to prompt that the call request has been received.

[0089] If the master caller accepts the call request, then in step 34, the master caller decodes the non-standard sub-audio code and dual-tone multi-frequency code in the call request to display the private identification mark of the slave caller. In addition, in step 34, the master caller adjusts the settings and transmits the received non-standard sub-audio signal and turns on the speaker to conduct a normal call.

[0090] For example, if the master caller receives a call request sent by slave caller No. 1 and accepts the call request, the master caller needs to adjust the settings and transmit a sub-audio signal represented by the non-standard sub-audio code in the received private identity identification mark of slave caller No. 1 to talk with slave caller No. 1.

[0091] Afterwards, if the master caller receives a call request from slave caller No. 2 after the call with slave caller No. 1 ends, and accepts the call request, the master caller needs to adjust the settings and transmit a sub-audio signal represented by the non-standard sub-audio code in the received private identity identification mark of slave caller No. 2 to talk with slave caller No. 2.

[0092] After the main caller has a normal conversation with the slave caller for a period of time, the main caller can actively end the conversation, or the main caller can passively end the conversation when there is no communication between the main caller and the slave caller for a period of time.

[0093] In addition, it should be noted that before the slave pager sends a call request, it determines whether the master pager is in a call by the received signal strength indication (RSSI); and in response to the master pager being in a call, the slave pager abandons sending the call request.

[0094] In addition, a group of multiple slave callers use a preset sub-audio code as a common identification mark and can receive a sub-audio signal represented by the preset sub-audio code, wherein the preset sub-audio code is different from the non-standard sub-audio code.

[0095] The number of the plurality of slave pagers using the preset sub-audio code as a public identity identification mark can be determined according to the application scenario and the geographical location.

[0096] In a one-to-many communication between a master pager and multiple slave pagers in a group of pagers:

[0097] Step 41: The master caller transmits a sub-audio signal represented by a preset sub-audio code. The preset sub-audio signal can be either a standard sub-audio signal or a non-standard sub-audio signal, as long as the preset sub-audio signal is different from the sub-audio signal represented by the non-standard sub-audio code in the private identification mark of the slave caller.

[0098] Step 42: Multiple slave callers with a combination of the pre-set sub-audio code and dual-tone multi-frequency code as a public identity identification mark receive the sub-audio signal. Since the public identity identification mark is artificially pre-set in the multiple slave callers, or is pre-set when the multiple slave callers leave the factory, the multiple slave callers are able to receive the pre-set sub-audio signal. It should be noted that multiple slave callers in a group share a public identity identification mark for use in this "one-to-many communication". Different groups have different public identity identification marks to distinguish different scenarios and regions.

[0099] In addition, the callers in the group of callers except the plurality of slave callers cannot receive the sub-audio signal.

[0100] Thus, one-to-many communication between a master pager in a group of pagers and a plurality of slave pagers is achieved.

[0101] In addition, the slave pager is implemented through the doorbell. The master pager sends a command to the doorbell to control the door.

[0102] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims.It should be understood that the scope of the invention is defined by the claims.

Claims

1. A communication device, characterized in that: The communication device uses a combination of a non-standard sub-audio code and a dual-tone multi-frequency code as a private identity identification mark, wherein a plurality of the communication devices jointly use a combination of a pre-set sub-audio code and a dual-tone multi-frequency code as a public identity identification mark, and are capable of receiving a sub-audio signal represented by the pre-set sub-audio code, wherein the pre-set sub-audio code is different from the non-standard sub-audio code; wherein the non-standard sub-audio code is a 23-bit binary code, and the dual-tone multi-frequency code is a 4-bit binary code.

2. The communication device according to claim 1, characterized in that The communication device is capable of transmitting and receiving a non-standard sub-audio signal represented by the non-standard sub-audio code.

3. The communication device according to claim 1, characterized in that The number of the communication devices using the combination of the preset sub-audio code and the dual-tone multi-frequency code as a public identity identification mark is determined according to the application scenario and the geographical location.

4. The communication device according to claim 1, characterized in that The communication device is a wireless doorbell.

5. The communication device according to claim 4, characterized in that The wireless doorbells having the same private identification mark are respectively a master wireless doorbell and a slave wireless doorbell.

6. The communication device according to claim 5, characterized in that The master wireless doorbell accepts the call request to establish a call in response to receiving the call request sent by the slave wireless doorbell, and the master wireless doorbell actively or passively ends the call with the slave wireless doorbell after talking with the slave wireless doorbell for a period of time; or, The master wireless doorbell rejects the call request in response to receiving the call request sent by the slave wireless doorbell.

7. The communication device according to claim 5, characterized in that The plurality of master wireless doorbells use a combination of a preset sub-audio code and a dual-tone multi-frequency code as a common identity identification mark, and are capable of receiving a sub-audio signal represented by the preset sub-audio code, wherein the preset sub-audio code is different from the non-standard sub-audio code.

8. The communication device according to claim 7, characterized in that: The number of the plurality of wireless doorbells using the combination of the preset sub-audio code and the dual-tone multi-frequency code as a public identity identification mark is determined according to the application scenario and the geographical location.

9. The communication device according to claim 1, characterized in that The communication device is a pager.

10. The communication device according to claim 9, characterized in that Sending a call request from the caller to the master caller; The call request at least includes a combination of a non-standard sub-audio signal represented by a non-standard sub-audio code in the private identification mark of the slave caller and a dual-tone multi-frequency signal represented by a dual-tone multi-frequency code in the private identification mark of the slave caller.

11. The communication device according to claim 10, characterized in that In response to receiving the call request from the slave caller, the master caller decodes the non-standard sub-audio code and dual-tone multi-frequency code in the call request to display the private identity mark of the slave caller.

12. The communication device according to claim 11, characterized in that In response to receiving the call request sent by the slave caller, the master caller accepts the call request, adjusts settings and transmits with the received non-standard sub-audio signal, thereby establishing a call; or The main caller rejects the call request in response to receiving the call request sent by the slave caller.

13. The communication device according to claim 12, characterized in that After the master caller has been talking with the slave caller for a period of time, the master caller actively or passively ends the call.

14. The communication device according to claim 10, characterized in that Before sending a call request, the slave caller determines whether the master caller is in a call by receiving a signal strength indication; as well as In response to the master caller being in a call, the slave caller abandons sending the call request.

15. The communication device according to claim 10, characterized in that The plurality of slave callers use a combination of a preset sub-audio code and a dual-tone multi-frequency code as a common identity identification mark and are capable of receiving a sub-audio signal represented by the preset sub-audio code, wherein the preset sub-audio code is different from the non-standard sub-audio code.

16. The communication device according to claim 15, characterized in that The number of the plurality of slave pagers using the combination of the preset sub-audio code and the dual-tone multi-frequency code as a public identity identification mark is determined according to the application scenario and the geographical location.

17. The communication device according to claim 10, characterized in that The slave pager is implemented through a doorbell, to which the master pager sends commands to control the door.

18. The communication device according to claim 1, characterized in that The communication device is a walkie-talkie.

19. A communication method between communication devices, characterized in that: The communication method comprises: The communication device is arranged to use a combination of a non-standard sub-audio code and a dual-tone multi-frequency code as a private identity identification mark, wherein a plurality of the communication devices are arranged to commonly use a combination of a pre-set sub-audio code and a dual-tone multi-frequency code as a public identity identification mark, and are arranged to be able to receive a sub-audio signal represented by the pre-set sub-audio code, wherein the pre-set sub-audio code is different from the non-standard sub-audio code; wherein the non-standard sub-audio code is a 23-bit binary code, and the dual-tone multi-frequency code is a 4-bit binary code.

20. The communication method according to claim 19, characterized in that: The communication method further comprises: The communication device is configured to be capable of transmitting and receiving a non-standard sub-audio signal represented by the non-standard sub-audio code.

21. The communication method according to claim 19, characterized in that: The communication method further comprises: The number of the plurality of communication devices using the combination of the preset sub-audio code and the dual-tone multi-frequency code as a public identity identification mark is determined according to the application scenario and the geographical location.

22. The communication method according to claim 19, characterized in that: The communication method further comprises: A wireless doorbell is used as the communication device.

23. The communication method according to claim 22, characterized in that: The communication method further comprises: Two wireless doorbells having the same private identification mark are used as a master wireless doorbell and a slave wireless doorbell respectively.

24. The communication method according to claim 23, characterized in that: The communication method further comprises: The master wireless doorbell accepts the call request to establish a call in response to receiving the call request sent by the slave wireless doorbell, and the master wireless doorbell actively or passively ends the call with the slave wireless doorbell after talking with the slave wireless doorbell for a period of time; or, The master wireless doorbell rejects the call request in response to receiving the call request sent by the slave wireless doorbell.

25. The communication method according to claim 23, characterized in that: The communication method further comprises: The plurality of master wireless doorbells are arranged to use a combination of a preset sub-audio code and a dual-tone multi-frequency code as a common identity identification mark, and are arranged to be able to receive a sub-audio signal represented by the preset sub-audio code, wherein the preset sub-audio code is different from the non-standard sub-audio code.

26. The communication method according to claim 25, characterized in that: The communication method further comprises: The number of the plurality of wireless doorbells using the combination of the preset sub-audio code and the dual-tone multi-frequency code as a public identity identification mark is determined according to the application scenario and the geographical location.

27. The communication method according to claim 19, characterized in that: A pager is used as the communication device.

28. The communication method according to claim 27, characterized in that: The communication method further comprises: Sending a call request from the caller to the master caller; The call request at least includes a combination of a non-standard sub-audio signal represented by a non-standard sub-audio code in the private identification mark of the slave caller and a dual-tone multi-frequency signal represented by a dual-tone multi-frequency code in the private identification mark of the slave caller.

29. The communication method according to claim 28, characterized in that: The communication method further comprises: In response to receiving the call request from the slave caller, the master caller decodes the non-standard sub-audio code and dual-tone multi-frequency code in the call request to display the private identity mark of the slave caller.

30. The communication method according to claim 29, characterized in that: The communication method further comprises: In response to receiving the call request sent by the slave caller, the master caller accepts the call request, adjusts settings and transmits with the received non-standard sub-audio signal, thereby establishing a call; or The main caller rejects the call request in response to receiving the call request sent by the slave caller.

31. The communication method according to claim 30, characterized in that: The communication method further comprises: After the master caller has been talking with the slave caller for a period of time, the master caller actively or passively ends the call.

32. The communication method according to claim 28, characterized in that: The communication method further comprises: The slave caller determines whether the master caller is in a call by receiving a signal strength indication before issuing a call request; and In response to the master caller being in a call, the slave caller abandons sending the call request.

33. The communication method according to claim 28, characterized in that: The communication method further comprises: The plurality of slave pagers are arranged to use a combination of a preset sub-audio code and a dual-tone multi-frequency code as a common identity identification mark, and are arranged to be able to receive a sub-audio signal represented by the preset sub-audio code, wherein the preset sub-audio code is different from the non-standard sub-audio code.

34. The communication method according to claim 33, characterized in that: The communication method further comprises: The number of the plurality of slave pagers using the combination of the preset sub-audio code and the dual-tone multi-frequency code as a public identity identification mark is determined according to the application scenario and the geographical location.

35. The communication method according to claim 28, characterized in that: The slave caller is implemented through a doorbell, and the master caller sends a command to the doorbell to control the door.

36. The communication method according to claim 28, characterized in that: An intercom is used as the communication device.

37. A computer-readable storage medium, characterized in that: Computer program code is stored on the computer-readable storage medium. When the computer program code is executed on a computer, the computer is caused to execute the communication method according to any one of claims 19 to 36.

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