CN103986915B - Data transmission system and method for camera shooting equipment - Google Patents

Abstract

The present invention discloses a camera equipment data transmission system and method. The system includes a mobile terminal and a camera equipment; the mobile terminal sends data to the camera equipment by emitting sound or/and flashes, and the camera equipment recognizes the above-mentioned sounds or/and flashes information, so as to receive the data sent by the mobile terminal. The mobile terminal includes a first environmental sound collection unit, a first Fourier transform unit, a candidate area setting unit, a communication frequency setting unit, a handshake information sending unit, and a sound wave generation control unit; the imaging device includes a second environment A sound collection unit, a second Fourier transform unit, a signal demodulation unit, a communication frequency judgment unit, and a data receiving unit. The mobile terminal may also include a flash unit, a second handshake information sending unit, and a light wave generation control unit; the camera device includes a position positioning unit and an information conversion unit. The invention can quickly transmit data and improve the convenience of camera setting.

Description

Camera equipment data transmission system and method

technical field

The invention belongs to the technical field of data communication, and relates to a data transmission system, in particular to a camera equipment data transmission system; at the same time, the invention also relates to a camera equipment data transmission method.

Background technique

At present, camera equipment in home intelligent monitoring is gradually being widely used. Today, camera equipment is configured using a configuration terminal (computer, mobile phone or tablet) through a wireless/wired network or a USB data cable connection.

The existing camera equipment setting method has relatively high requirements on the peripheral equipment and the camera equipment itself. If a wireless router or a wired interface is required, the camera equipment also needs to be equipped with a wireless network card or a wired network interface accordingly, which also increases the camera network interface to a certain extent. The cost of the equipment.

In view of this, there is an urgent need to design a new camera device configuration method so as to overcome the above-mentioned defects of the existing configuration method.

Contents of the invention

The technical problem to be solved by the present invention is to provide a camera equipment data transmission system, which can perform data transmission quickly and improve the convenience of camera setting.

In addition, the present invention also provides a data transmission method of the camera equipment, which can perform data transmission quickly and improve the convenience of camera setting.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

A camera equipment data transmission system, said system comprising: a mobile terminal, a camera equipment;

The mobile terminal sends data to the imaging device by emitting sound or/and flashing light, and the imaging device recognizes the above-mentioned sound or/and flashing information, thereby receiving the data sent by the mobile terminal;

The mobile terminal includes a first environmental sound collection unit, a first Fourier transform unit, a candidate area setting unit, a communication frequency setting unit, a handshake information sending unit, and a sound wave generation control unit, and the imaging device includes a second environment A sound collection unit, a second Fourier transform unit, a signal demodulation unit, a communication frequency judgment unit, and a data receiving unit; or/and, the mobile terminal includes a flash unit, a second handshake information sending unit, and a light wave generation control unit; The imaging device includes a position positioning unit and an information conversion unit;

The first ambient sound collection unit is used to collect ambient sound signals; the first Fourier transform unit is used to Fourier transform the signal to obtain spectrum distribution information; the candidate area setting unit is used to search for An area with a weaker signal is used as a candidate area; the communication frequency setting unit acquires two or more frequencies with a large separation distance from the candidate area as communication frequencies; the handshake information sending unit is used to sequentially send handshakes from each communication frequency Information; the sound wave generation control unit is used to send the data that needs to be transmitted by controlling the sound wave generation unit to send out the set sound wave;

The second ambient sound collection unit is used to collect ambient sound signals; the second Fourier transform unit is used to Fourier transform the signal to separate signals of different frequencies; the signal demodulation unit is used to separate Frequency signal demodulation; the communication frequency judging unit is used to compare the demodulation result with the handshake information, and if it matches, it is determined that the frequency is a communication frequency; the data receiving unit is used to determine all communication frequencies with these frequency to receive data;

The flash unit is used to send on and off signals; the second handshake information sending unit is used to control the on and off of the flash unit, so as to transmit the corresponding binary handshake information; the light wave generation control unit is used to control the on and off of the flash unit Send the data that needs to be transmitted;

The position locating unit is used to locate the position of the mobile terminal flashing unit, that is, to find the point where the blinking signal is consistent with the handshake information among the candidate points; the information conversion unit is used to receive the blinking signal of the corresponding position and convert it into binary information;

The process of automatically locating the flashlight of the mobile device by the position locating unit includes:

- Obtain the brightness channel of the nth frame of the video, denoted as f(n);

- Calculate all local maxima of the brightness channel (grayscale image), and record P={p(0),p(1),...} to represent the set of coordinates of all maxima points; V={v(0 ), v(1),...} represent the set of values of the corresponding points in P, because it is a maximum value, so the values in V are all "1";

- Find all local maxima P(n+1) in frame n+1 f(n+1), and then traverse all points in P: if point p(i) and P(n+1) set If a certain point is the same, and the coordinates are within the set neighborhood, then add "1" to its corresponding value v(i) string, otherwise add "0" to v(i);

- Add the points in P(n+1) that have no corresponding relationship with P to P, and add its value "1" to the set V;

-Check all the bit string values v(i) in V, if they are consistent with the handshake bit string, then the corresponding point p(i) is the flash position of the mobile terminal.

A camera equipment data transmission system, said system comprising: a mobile terminal, a camera equipment;

The mobile terminal sends data to the imaging device by emitting sound or/and flashing light, and the imaging device recognizes the sound or/and flashing information, so as to receive the data sent by the mobile terminal.

As a preferred solution of the present invention, the mobile terminal includes a first ambient sound collection unit, a first Fourier transform unit, a candidate area setting unit, a communication frequency setting unit, a handshake information sending unit, and a sound wave generation control unit ;

The first ambient sound collection unit is used to collect ambient sound signals;

The first Fourier transform unit is used to Fourier transform the signal to obtain spectrum distribution information;

The candidate area setting unit is used to search for areas with weaker signals in the frequency spectrum as candidate areas;

The communication frequency setting unit acquires two or more frequencies with a large separation distance as communication frequencies from the candidate area;

The handshake information sending unit is used to sequentially send handshake information from each communication frequency;

The sound wave generation control unit is used to send the data to be transmitted by controlling the sound wave generation unit to emit set sound waves;

The imaging device includes a second ambient sound acquisition unit, a second Fourier transform unit, a signal demodulation unit, a communication frequency judgment unit, and a data receiving unit;

The second ambient sound collection unit is used to collect ambient sound signals;

The second Fourier transform unit is used to Fourier transform the signal to separate signals of different frequencies;

The signal demodulation unit is used to demodulate signals of each frequency;

The communication frequency judging unit is used to compare the demodulation result with the handshake information, and if they match, determine that the frequency is the communication frequency;

The data receiving unit is used for receiving data at these frequencies after all communication frequencies are determined.

As a preferred solution of the present invention, the mobile terminal includes a flash unit, a second handshake information sending unit, and a light wave generation control unit; the camera includes a position positioning unit and an information conversion unit;

The flash unit is used to send out a signal of blinking;

The second handshake information sending unit is used to control the blinking of the flash unit, so as to transmit the corresponding binary handshake information;

The light wave generation control unit is used to send the data to be transmitted by controlling the blinking of the flash unit;

The position locating unit is used for locating the position of the flash unit of the mobile terminal, that is, searching for a point where the blinking signal is consistent with the handshake information among the candidate points;

The information conversion unit is used to receive the blinking signal of the corresponding position and convert it into binary information;

The process of automatically locating the flashlight of the mobile device by the position locating unit includes:

- Obtain the brightness channel of the nth frame of the video, denoted as f(n);

- Calculate all local maxima of the brightness channel (grayscale image), and record P={p(0),p(1),...} to represent the set of coordinates of all maxima points; V={v(0 ), v(1),...} represent the set of values of the corresponding points in P, because it is a maximum value, so the values in V are all "1";

- Find all local maxima P(n+1) in frame n+1 f(n+1), and then traverse all points in P: if point p(i) and P(n+1) set If a certain point is the same, and the coordinates are within the set neighborhood, then add "1" to its corresponding value v(i) string, otherwise add "0" to v(i);

- Add the points in P(n+1) that have no corresponding relationship with P to P, and add its value "1" to the set V;

-Check all the bit string values v(i) in V, if they are consistent with the handshake bit string, then the corresponding point p(i) is the flash position of the mobile terminal.

A data transmission method for a camera device, wherein a mobile terminal sends data to the camera device by emitting sound or/and flashes, and the camera device recognizes the above-mentioned sound or/and flash information, thereby receiving the data sent by the mobile terminal;

The mobile terminal includes a first environmental sound collection unit, a first Fourier transform unit, a candidate area setting unit, a communication frequency setting unit, a handshake information sending unit, and a sound wave generation control unit, and the imaging device includes a second environment A sound collection unit, a second Fourier transform unit, a signal demodulation unit, a communication frequency judgment unit, and a data receiving unit; or/and, the mobile terminal includes a flash unit, a second handshake information sending unit, and a light wave generation control unit; The imaging device includes a position positioning unit and an information conversion unit;

When the data transmission method transmits data by emitting sound, the method includes: the first environmental sound acquisition unit collects the environmental sound signal; the first Fourier transform unit performs Fourier transform on the signal to obtain spectrum distribution information; The area setting unit searches for areas with weaker signals in the spectrum as candidate areas; the communication frequency setting unit obtains two or more frequencies with a large distance from the candidate area as communication frequencies; the handshake information sending unit sequentially transmits from each communication frequency Handshake information; the sound wave generation control unit sends the data that needs to be transmitted by controlling the sound wave generation unit to send the set sound wave; the second environmental sound acquisition unit collects the environmental sound signal; the second Fourier transform unit performs Fourier transform on the signal, separates Signals of different frequencies are output; the signal demodulation unit demodulates the signals of each frequency; the communication frequency judging unit compares the demodulation results with the handshake information, and if they match, the frequency is determined to be the communication frequency; the data receiving unit determines all communication frequencies After that, receive data at these frequencies;

When the data transmission method transmits data by sending out flashing lights, the method includes: the flashing unit sends an on-off signal; the second handshake information sending unit controls the flashing unit on and off, thereby transmitting the corresponding binary handshake information; light wave generation control The unit sends the data that needs to be transmitted by controlling the blinking of the flash unit; the position positioning unit locates the position of the flash unit of the mobile terminal, that is, finds the point where the blinking signal is consistent with the handshake information among the candidate points; the information conversion unit receives the blinking signal of the corresponding position, and Convert it to binary information;

The process of automatically locating the flashlight of the mobile device by the position locating unit includes:

- Obtain the brightness channel of the nth frame of the video, denoted as f(n);

- Calculate all local maxima of the brightness channel (grayscale image), and record P={p(0),p(1),...} to represent the set of coordinates of all maxima points; V={v(0 ), v(1),...} represent the set of values of the corresponding points in P, because it is a maximum value, so the values in V are all "1";

- Find all local maxima P(n+1) in frame n+1 f(n+1), and then traverse all points in P: if point p(i) and P(n+1) set If a certain point is the same, and the coordinates are within the set neighborhood, then add "1" to its corresponding value v(i) string, otherwise add "0" to v(i);

- Add the points in P(n+1) that have no corresponding relationship with P to P, and add its value "1" to the set V;

-Check all the bit string values v(i) in V, if they are consistent with the handshake bit string, then the corresponding point p(i) is the flash position of the mobile terminal.

A camera device data transmission method, the method comprising:

The mobile terminal sends data to the camera device by sound or/and flashing;

The imaging device recognizes the above-mentioned sound or/and flash information, so as to receive the data sent by the mobile terminal.

As a preferred solution of the present invention, the mobile terminal includes a first ambient sound collection unit, a first Fourier transform unit, a candidate area setting unit, a communication frequency setting unit, a handshake information sending unit, and a sound wave generation control unit , the imaging device includes a second ambient sound acquisition unit, a second Fourier transform unit, a signal demodulation unit, a communication frequency judgment unit, and a data receiving unit; the data transmission method transmits data by sounding;

The method specifically includes: a first environmental sound collection unit collects an environmental sound signal; the first Fourier transform unit performs Fourier transform on the signal to obtain spectrum distribution information; the candidate area setting unit searches for areas with weaker signals in the spectrum as Candidate area; the communication frequency setting unit obtains two or more frequencies with a large separation distance from the candidate area as the communication frequency; the handshake information sending unit sends handshake information from each communication frequency in turn; the sound wave generation control unit sends out by controlling the sound wave generation unit The set sound wave is used to send the data that needs to be transmitted; the second ambient sound acquisition unit collects the environmental sound signal; the second Fourier transform unit performs Fourier transform on the signal to separate signals of different frequencies; The demodulated signal is demodulated; the communication frequency judging unit compares the demodulation result with the handshake information, and if it matches, it determines that the frequency is the communication frequency; the data receiving unit receives data at these frequencies after determining all communication frequencies.

As a preferred solution of the present invention, the mobile terminal includes a flash unit, a second handshake information sending unit, and a light wave generation control unit; the camera includes a position positioning unit and an information conversion unit; to transmit data;

The method specifically includes: the flash unit sends a signal of blinking; the second handshake information sending unit controls the blinking of the flash unit, thereby transmitting the corresponding binary handshake information; the light wave generation control unit sends the data to be transmitted by controlling the blinking of the flash unit; The position positioning unit locates the position of the flash unit of the mobile terminal, that is, finds the point where the blinking signal is consistent with the handshake information among the candidate points; the information conversion unit receives the blinking signal of the corresponding position and converts it into binary information;

The process of automatically locating the flashlight of the mobile device by the position locating unit includes:

- Obtain the brightness channel of the nth frame of the video, denoted as f(n);

- Calculate all local maxima of the brightness channel (grayscale image), and record P={p(0),p(1),...} to represent the set of coordinates of all maxima points; V={v(0 ), v(1),...} represent the set of values of the corresponding points in P, because it is a maximum value, so the values in V are all "1";

- Find all local maxima P(n+1) in frame n+1 f(n+1), and then traverse all points in P: if point p(i) and P(n+1) set If a certain point is the same, and the coordinates are within the set neighborhood, then add "1" to its corresponding value v(i) string, otherwise add "0" to v(i);

- Add the points in P(n+1) that have no corresponding relationship with P to P, and add its value "1" to the set V;

-Check all the bit string values v(i) in V, if they are consistent with the handshake bit string, then the corresponding point p(i) is the flash position of the mobile terminal.

The beneficial effect of the present invention is that: the camera equipment data transmission system proposed by the present invention can quickly perform data transmission and improve the convenience of camera setting.

The configuration of the camera in the original home intelligent monitoring is configured by using a configuration terminal (computer, mobile phone or tablet) to connect through a wireless/wired network or a USB data cable. This design is greatly affected and restricted by the network, and the technical requirements for users are too high. At the same time, it is also greatly affected by the configuration of terminal equipment (such as the version of the operating system).

The design of the system of the present invention is simple and popular. It does not use any data cable connection or related network connection. Users only need to know how to use mobile phones to easily operate and configure data communication and configuration between home cameras. Promote and lower the threshold of application technology.

Description of drawings

FIG. 1 is a schematic view of the data transmission system for an imaging device of the present invention.

FIG. 2 is a schematic diagram of the composition of the camera device data transmission system of the present invention.

FIG. 3 is a schematic diagram of a sound sequence modulated by 10 sound signals.

detailed description

Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Embodiment one

Please refer to Fig. 1, the present invention discloses a kind of imaging equipment data transmission system, described system comprises: intelligent mobile terminal 1, imaging equipment; and flash) to automatically set the relevant settings.

The smart mobile terminal 1 sends data to the imaging device by emitting sound (through the speaker 12) or/and flashing (through the flashlight 11), and the imaging device recognizes the above-mentioned sound or/and flash information, thereby receiving the data sent by the mobile terminal.

The basic principle of sound is to modulate a numerical signal. For example, in binary modulation, 1KHz and 2KHz are used to represent 0 and 1 respectively, and the sound sequence made by 10 modulation is shown in Figure 3. The receiving end performs Fourier transform on the collected sound signal, extracts the 1KHz and 2KHz signals, and demodulates the sound signal into a binary sequence.

However, in a noisy environment, there is environmental noise covering a wide frequency band, and the modulation at a fixed frequency is likely to be polluted by environmental noise, resulting in bit errors after demodulation, thereby affecting the accuracy/efficiency of communication. The sound communication based on automatic frequency conversion can greatly reduce this effect, thereby improving communication efficiency.

Referring to Fig. 2, the intelligent mobile terminal 1 includes a first ambient sound collection unit, a first Fourier transform unit, a candidate area setting unit, a communication frequency setting unit, a handshake information sending unit, and a sound wave generation control unit, so The imaging device includes a second ambient sound collection unit, a second Fourier transform unit, a signal demodulation unit, a communication frequency judgment unit, and a data receiving unit.

The first ambient sound collection unit is used to collect ambient sound signals; the first Fourier transform unit is used to Fourier transform the signal to obtain spectrum distribution information; the candidate area setting unit is used to search for The region with a weaker signal is used as a candidate region; the communication frequency setting unit obtains two or more frequencies with a large separation distance from the candidate region as a communication frequency (can be set according to the encoding method); the handshake information sending unit uses To send handshake information (such as 01010101) from each communication frequency in sequence; the sound wave generation control unit is used to send the data to be transmitted by controlling the sound wave generation unit (such as the speaker 12) to emit set sound waves.

The second ambient sound collection unit is used to collect ambient sound signals; the second Fourier transform unit is used to Fourier transform the signal to separate signals of different frequencies; the signal demodulation unit is used to separate Frequency signal demodulation; the communication frequency judging unit is used to compare the demodulation result with the handshake information, and if it matches, it is determined that the frequency is a communication frequency; the data receiving unit is used to determine all communication frequencies with these Frequency to receive data.

In addition, the system of the present invention can also transmit data using flashlight. The flashlight of the smart device illuminates the camera, and through the change of brightness, data can be transmitted to the camera. However, it is limited to the acquisition frequency of ordinary cameras (25-30 frames), and the transmission speed is limited, which is not as good as the above-mentioned voice communication. However, in some scenarios (such as a little distance, strong noise environment or sound isolation) that are not suitable for sound communication, and optical communication is not affected, optical fiber communication can be used.

The two states of the flash light of the smart device can be used to represent 1 and 0, and the processor in the camera can accept this coded information by calculating the brightness change of the entire image of the video frame, so as to realize communication. However, in an environment with complex light and strong light interference, the on-off change of the flash of the mobile device is not enough to control the brightness change of the entire image of the video frame. At this time, the lighting change technology using automatic light source positioning can effectively communicate.

Specifically, the mobile terminal includes a flash unit, a second handshake information sending unit, and a light wave generation control unit; correspondingly, the camera includes a position positioning unit and an information conversion unit.

The flash unit (which may be a flash lamp) is used to send a signal of on and off; the second handshake information sending unit is used to control the on and off of the flash unit, so as to transmit the corresponding binary handshake information (such as 10101010); the light wave generation control The unit is used to send the data to be transmitted by controlling the blinking of the flash unit.

The position locating unit is used to locate the position of the mobile terminal flashing unit, that is, to find the point where the blinking signal is consistent with the handshake information among the candidate points; the information conversion unit is used to receive the blinking signal of the corresponding position and convert it into binary information.

The process of automatically locating the flashlight of the mobile device by the position locating unit includes:

- Obtain the brightness channel of the nth frame of the video, denoted as f(n);

- Calculate all local maxima of the brightness channel (grayscale image), and record P={p(0),p(1),...} to represent the set of coordinates of all maxima points; V={v(0 ), v(1),...} represent the set of values of the corresponding points in P, because it is a maximum value, so the values in V are all "1";

- Find all local maxima P(n+1) in frame n+1 f(n+1), and then traverse all points in P: if point p(i) and P(n+1) set If a certain point is the same, and the coordinates are within the set neighborhood, then add "1" to its corresponding value v(i) string, otherwise add "0" to v(i);

- Add the points in P(n+1) that have no corresponding relationship with P to P, and add its value "1" to the set V;

-Check all the bit string values v(i) in V, if they are consistent with the handshake bit string, then the corresponding point p(i) is the flash position of the mobile terminal.

The present invention also discloses a data transmission method of a camera device. The mobile terminal sends data to the camera device by emitting sound or/and flashes, and the camera device recognizes the sound or/and flash information to receive the data sent by the mobile terminal.

When the data transmission method transmits data by emitting sound, the method includes: the first environmental sound acquisition unit collects the environmental sound signal; the first Fourier transform unit performs Fourier transform on the signal to obtain spectrum distribution information; The area setting unit searches for areas with weaker signals in the spectrum as candidate areas; the communication frequency setting unit obtains two or more frequencies with a large distance from the candidate area as communication frequencies; the handshake information sending unit sequentially transmits from each communication frequency Handshake information; the sound wave generation control unit sends the data that needs to be transmitted by controlling the sound wave generation unit to send the set sound wave; the second environmental sound acquisition unit collects the environmental sound signal; the second Fourier transform unit performs Fourier transform on the signal, separates Signals of different frequencies are output; the signal demodulation unit demodulates the signals of each frequency; the communication frequency judging unit compares the demodulation results with the handshake information, and if they match, the frequency is determined to be the communication frequency; the data receiving unit determines all communication frequencies Then, receive data at these frequencies.

When the data transmission method transmits data by sending out flashing lights, the method includes: the flashing unit sends an on-off signal; the second handshake information sending unit controls the flashing unit on and off, thereby transmitting the corresponding binary handshake information; light wave generation control The unit sends the data that needs to be transmitted by controlling the blinking of the flash unit; the position positioning unit locates the position of the flash unit of the mobile terminal, that is, finds the point where the blinking signal is consistent with the handshake information among the candidate points; the information conversion unit receives the blinking signal of the corresponding position, and Convert it to binary information.

The process of automatically locating the flashlight of the mobile device by the position locating unit includes:

- Obtain the brightness channel of the nth frame of the video, denoted as f(n);

- Calculate all local maxima of the brightness channel (grayscale image), and record P={p(0),p(1),...} to represent the set of coordinates of all maxima points; V={v(0 ), v(1),...} represent the set of values of the corresponding points in P, because it is a maximum value, so the values in V are all "1";

- Find all local maxima P(n+1) in frame n+1 f(n+1), and then traverse all points in P: if point p(i) and P(n+1) set If a certain point is the same, and the coordinates are within the set neighborhood, then add "1" to its corresponding value v(i) string, otherwise add "0" to v(i);

- Add the points in P(n+1) that have no corresponding relationship with P to P, and add its value "1" to the set V;

-Check all the bit string values v(i) in V, if they are consistent with the handshake bit string, then the corresponding point p(i) is the flash position of the mobile terminal.

Embodiment two

In this embodiment, the smart mobile terminal only sets the imaging device by sounding, and the smart mobile terminal 1 includes a first ambient sound collection unit, a first Fourier transform unit, a candidate area setting unit, a communication frequency setting unit, and a communication frequency setting unit. unit, a handshake information sending unit, and a sound wave generation control unit. The imaging device includes a second ambient sound collection unit, a second Fourier transform unit, a signal demodulation unit, a communication frequency judgment unit, and a data receiving unit.

The first ambient sound collection unit is used to collect ambient sound signals; the first Fourier transform unit is used to Fourier transform the signal to obtain spectrum distribution information; the candidate area setting unit is used to search for The region with a weaker signal is used as a candidate region; the communication frequency setting unit obtains two or more frequencies with a large separation distance from the candidate region as a communication frequency (can be set according to the encoding method); the handshake information sending unit uses The handshake information (such as 01010101) is sequentially sent from each communication frequency; the sound wave generation control unit is used to send the data to be transmitted by controlling the sound wave generation unit to emit a set sound wave.

The second ambient sound collection unit is used to collect ambient sound signals; the second Fourier transform unit is used to Fourier transform the signal to separate signals of different frequencies; the signal demodulation unit is used to separate Frequency signal demodulation; the communication frequency judging unit is used to compare the demodulation result with the handshake information, and if it matches, it is determined that the frequency is a communication frequency; the data receiving unit is used to determine all communication frequencies with these Frequency to receive data.

Embodiment three

In this embodiment, the system of the present invention only uses flash to send data. The flashlight of the smart device illuminates the camera, and through the change of brightness, data can be transmitted to the camera. However, it is limited to the acquisition frequency of ordinary cameras (25-30 frames), and the transmission speed is limited, which is not as good as the above-mentioned voice communication. However, in some scenarios (such as a little distance, strong noise environment or sound isolation) that are not suitable for sound communication, and optical communication is not affected, optical fiber communication can be used.

The two states of the flash light of the smart device can be used to represent 1 and 0, and the processor in the camera can accept this coded information by calculating the brightness change of the entire image of the video frame, so as to realize communication. However, in an environment with complex light and strong light interference, the on-off change of the flash of the mobile device is not enough to control the brightness change of the entire image of the video frame. At this time, the lighting change technology using automatic light source positioning can effectively communicate.

Specifically, the mobile terminal includes a flash unit, a second handshake information sending unit, and a light wave generation control unit; correspondingly, the camera includes a position positioning unit and an information conversion unit.

The flash unit is used to send on and off signals; the second handshake information sending unit is used to control the flash unit on and off, so as to transmit the corresponding binary handshake information (such as 10101010); the light wave generation control unit is used to control The blinking of the flash unit sends the data that needs to be transmitted.

The position locating unit is used to locate the position of the mobile terminal flashing unit, that is, to find the point where the blinking signal is consistent with the handshake information among the candidate points; the information conversion unit is used to receive the blinking signal of the corresponding position and convert it into binary information.

The process of automatically locating the flashlight of the mobile device by the position locating unit includes:

- Obtain the brightness channel of the nth frame of the video, denoted as f(n);

- Calculate all local maxima of the brightness channel (grayscale image), and record P={p(0),p(1),...} to represent the set of coordinates of all maxima points; V={v(0 ), v(1),...} represent the set of values of the corresponding points in P, because it is a maximum value, so the values in V are all "1";

- Find all local maxima P(n+1) in frame n+1 f(n+1), and then traverse all points in P: if point p(i) and P(n+1) set If a certain point is the same, and the coordinates are within the set neighborhood, then add "1" to its corresponding value v(i) string, otherwise add "0" to v(i);

- Add the points in P(n+1) that have no corresponding relationship with P to P, and add its value "1" to the set V;

- Check all the bit string values v(i) in V, if they are consistent with the handshake bit string, then the corresponding point p(i) is the flash position of the mobile terminal.

To sum up, the camera device data transmission system proposed by the present invention can quickly perform data transmission and improve the convenience of camera setup.

The design of the system of the present invention is simple and popular. It does not use any data cable connection or related network connection. Users only need to know how to use mobile phones to easily operate and configure data communication and configuration between home cameras. Promote and lower the threshold of application technology.

The description and application of the invention herein is illustrative and is not intended to limit the scope of the invention to the above-described embodiments. Variations and changes to the embodiments disclosed herein are possible, and substitutions and equivalents for various components of the embodiments are known to those of ordinary skill in the art. It should be clear to those skilled in the art that the present invention can be realized in other forms, structures, arrangements, proportions, and with other components, materials and components without departing from the spirit or essential characteristics of the present invention. Other modifications and changes may be made to the embodiments disclosed herein without departing from the scope and spirit of the invention.

Claims (4)

1. A camera device data transmission system, characterized in that the system comprises: a mobile terminal, a camera device; The mobile terminal sends data to the imaging device by emitting sound or/and flashing light, and the imaging device recognizes the above-mentioned sound or/and flashing information, thereby receiving the data sent by the mobile terminal; The mobile terminal includes a first environmental sound collection unit, a first Fourier transform unit, a candidate area setting unit, a communication frequency setting unit, a handshake information sending unit, and a sound wave generation control unit, and the imaging device includes a second environment A sound collection unit, a second Fourier transform unit, a signal demodulation unit, a communication frequency judgment unit, and a data receiving unit; or/and, the mobile terminal includes a flash unit, a second handshake information sending unit, and a light wave generation control unit; The imaging device includes a position positioning unit and an information conversion unit; The first ambient sound collection unit is used to collect ambient sound signals; the first Fourier transform unit is used to Fourier transform the signal to obtain spectrum distribution information; the candidate area setting unit is used to search for An area with a weaker signal is used as a candidate area; the communication frequency setting unit acquires two or more frequencies with a large separation distance from the candidate area as communication frequencies; the handshake information sending unit is used to sequentially send handshakes from each communication frequency Information; the sound wave generation control unit is used to send the data to be transmitted by controlling the sound wave sending unit to send out the set sound wave; The second ambient sound collection unit is used to collect ambient sound signals; the second Fourier transform unit is used to Fourier transform the signal to separate signals of different frequencies; the signal demodulation unit is used to separate Frequency signal demodulation; the communication frequency judging unit is used to compare the demodulation result with the handshake information, and if it matches, it is determined that the frequency is a communication frequency; the data receiving unit is used to determine all communication frequencies with these frequency to receive data; The flash unit is used to send a flash signal; the second handshake information sending unit is used to control the flash unit to transmit the corresponding binary handshake information; the light wave generation control unit is used to control the flash unit to send the data to be transmitted; The position locating unit is used to locate the position of the mobile terminal flashing unit, that is, to find the point where the blinking signal is consistent with the handshake information among the candidate points; the information conversion unit is used to receive the blinking signal of the corresponding position and convert it into binary information; The process of automatically locating the flashlight of the mobile device by the position locating unit includes: - Obtain the brightness channel of the nth frame of the video, denoted as f(n); - Calculate all local maxima of the brightness channel (grayscale image), and record P={p(0),p(1),...} to represent the set of coordinates of all maxima points; V={v(0 ), v(1),...} represent the set of values of the corresponding points in P, because it is a maximum value, so the values in V are all "1"; - Find all local maxima P(n+1) in frame n+1 f(n+1), and then traverse all points in P: if point p(i) and P(n+1) set If a certain point is the same, and the coordinates are within the set neighborhood, then add "1" to its corresponding value v(i) string, otherwise add "0" to v(i); - Add the points in P(n+1) that have no corresponding relationship with P to P, and add its value "1" to the set V; -Check all the bit string values v(i) in V, if they are consistent with the handshake bit string, then the corresponding point p(i) is the flash position of the mobile terminal. 2. A camera equipment data transmission system, characterized in that the system comprises: a mobile terminal, a camera equipment; The mobile terminal sends data to the imaging device by emitting a flash, and the imaging device recognizes the flash information, thereby receiving the data sent by the mobile terminal; The mobile terminal includes a flash unit, a second handshake information sending unit, and a light wave generation control unit; the camera includes a position positioning unit and an information conversion unit; The flash unit is used to send out a signal of blinking; The second handshake information sending unit is used to control the blinking of the flash unit, so as to transmit the corresponding binary handshake information; The light wave generation control unit is used to send the data to be transmitted by controlling the blinking of the flash unit; The position locating unit is used for locating the position of the flash unit of the mobile terminal, that is, searching for a point where the blinking signal is consistent with the handshake information among the candidate points; The information conversion unit is used to receive the on-off signal of the corresponding position and convert it into binary information; The process of automatically locating the flashlight of the mobile device by the position locating unit includes: - Obtain the brightness channel of the nth frame of the video, denoted as f(n); -Calculate all local maxima of the brightness channel, record P={p(0),p(1),...} to represent the set of coordinates of all maxima points; V={v(0),v(1 ),...} represent the set of values of the corresponding points in P, because it is a maximum value, so the values in V are all "1"; - Find all local maxima P(n+1) in frame n+1 f(n+1), and then traverse all points in P: if point p(i) and P(n+1) set If a certain point is the same, and the coordinates are within the set neighborhood, then add "1" to its corresponding value v(i) string, otherwise add "0" to v(i); - Add the points in P(n+1) that have no corresponding relationship with P to P, and add its value "1" to the set V; -Check all the bit string values v(i) in V, if they are consistent with the handshake bit string, then the corresponding point p(i) is the flash position of the mobile terminal. 3. A camera data transmission method, characterized in that, the mobile terminal sends data to the camera device by emitting sound or/and flashing light, and the camera device recognizes the above-mentioned sound or/and flash information, thereby receiving the data sent by the mobile terminal; The mobile terminal includes a first environmental sound collection unit, a first Fourier transform unit, a candidate area setting unit, a communication frequency setting unit, a handshake information sending unit, and a sound wave generation control unit, and the imaging device includes a second environment A sound collection unit, a second Fourier transform unit, a signal demodulation unit, a communication frequency judgment unit, and a data receiving unit; or/and, the mobile terminal includes a flash unit, a second handshake information sending unit, and a light wave generation control unit; The imaging device includes a position positioning unit and an information conversion unit; When the data transmission method transmits data by emitting sound, the method includes: the first environmental sound acquisition unit collects the environmental sound signal; the first Fourier transform unit performs Fourier transform on the signal to obtain spectrum distribution information; The area setting unit searches for areas with weaker signals in the spectrum as candidate areas; the communication frequency setting unit obtains two or more frequencies with a large distance from the candidate area as communication frequencies; the handshake information sending unit sequentially transmits from each communication frequency Handshake information; the sound wave generation control unit sends the set sound wave by controlling the sound wave sending unit, thereby sending the data that needs to be transmitted; the second environmental sound acquisition unit collects the environmental sound signal; the second Fourier transform unit performs Fourier transform on the signal, Separate the signals of different frequencies; the signal demodulation unit demodulates the signals of each frequency; the communication frequency judging unit compares the demodulation result with the handshake information, and if it matches, it determines that the frequency is the communication frequency; the data receiving unit determines all communication After frequencies, receive data at these frequencies; When the data transmission method transmits data by sending out flashing lights, the method includes: the flashing unit sends an on-off signal; the second handshake information sending unit controls the flashing unit on and off, thereby transmitting the corresponding binary handshake information; light wave generation control The unit sends the data that needs to be transmitted by controlling the blinking of the flash unit; the position positioning unit locates the position of the flash unit of the mobile terminal, that is, finds the point where the blinking signal is consistent with the handshake information among the candidate points; the information conversion unit receives the blinking signal of the corresponding position, and Convert it to binary information; The process of automatically locating the flashlight of the mobile device by the position locating unit includes: - Obtain the brightness channel of the nth frame of the video, denoted as f(n); -Calculate all local maxima of the brightness channel, record P={p(0),p(1),...} to represent the set of coordinates of all maxima points; V={v(0),v(1 ),...} represent the set of values of the corresponding points in P, because it is a maximum value, so the values in V are all "1"; - Find all local maxima P(n+1) in frame n+1 f(n+1), and then traverse all points in P: if point p(i) and P(n+1) set If a certain point is the same, and the coordinates are within the set neighborhood, then add "1" to its corresponding value v(i) string, otherwise add "0" to v(i); - Add the points in P(n+1) that have no corresponding relationship with P to P, and add its value "1" to the set V; -Check all the bit string values v(i) in V, if they are consistent with the handshake bit string, then the corresponding point p(i) is the flash position of the mobile terminal. 4. A camera device data transmission method, characterized in that the method comprises: The mobile terminal sends data to the camera device by flashing; The camera device recognizes the above-mentioned flash information, thereby receiving the data sent by the mobile terminal; The mobile terminal includes a flash unit, a second handshake information sending unit, and a light wave generation control unit; the imaging device includes a position positioning unit, and an information conversion unit; the data transmission method transmits data by emitting a flash; The method specifically includes: the flash unit sends a signal of blinking; the second handshake information sending unit controls the blinking of the flash unit, thereby transmitting the corresponding binary handshake information; the light wave generation control unit sends the data to be transmitted by controlling the blinking of the flash unit; The position positioning unit locates the position of the flash unit of the mobile terminal, that is, finds the point where the blinking signal is consistent with the handshake information among the candidate points; the information conversion unit receives the blinking signal of the corresponding position and converts it into binary information; The process of automatically locating the flashlight of the mobile device by the position locating unit includes: - Obtain the brightness channel of the nth frame of the video, denoted as f(n); - Find all local maxima of the brightness channel, record P={p(0),p(1),...} to represent the coordinate set of all maxima points; V={v(0),v(1 ),...} represent the set of values of the corresponding points in P, because it is a maximum value, so the values in V are all "1"; - Find all local maxima P(n+1) in frame n+1 f(n+1), and then traverse all points in P: if point p(i) and P(n+1) set If a certain point is the same, and the coordinates are within the set neighborhood, then add "1" to its corresponding value v(i) string, otherwise add "0" to v(i); - Add the points in P(n+1) that have no corresponding relationship with P to P, and add its value "1" to the set V; -Check all the bit string values v(i) in V, if they are consistent with the handshake bit string, then the corresponding point p(i) is the flash position of the mobile terminal.