WO2018113193A1

WO2018113193A1 - Time synchronization method, device and system

Info

Publication number: WO2018113193A1
Application number: PCT/CN2017/086910
Authority: WO
Inventors: 谢灿豪
Original assignee: 智威富（北京）科技有限公司
Priority date: 2016-12-21
Filing date: 2017-06-02
Publication date: 2018-06-28
Also published as: CN106657852B; CN106657852A

Abstract

Embodiments of the present invention provide a time synchronization method, device and system. The method comprises: an audio recording device receives request information sent by a photographing device; the audio recording device monitors sounds sent by the photographing device; record the time when the sounds are monitored; and the audio recording device calibrates the time of the audio recording device according to the time when the sounds are monitored and time information sent by the photographing device to the audio recording device. In embodiments of the present invention, the audio recording device monitors the sounds sent by the photographing device, records the time when the sounds are monitored, and calibrates the time of the audio recording device according to the time when the sounds are monitored and time information sent by the photographing device to the audio recording device, so that time synchronization between the audio recording device and the photographing device is achieved by audio transmission. Compared with time synchronization between an audio recording device and a photographing device achieved by signal transmission, time delay caused by the signal transmission is avoided and the time synchronization accuracy is improved.

Description

Timing method, device and system

Technical field

The embodiments of the present invention relate to the field of communications technologies, and in particular, to a method, device, and system for timing.

Background technique

In the prior art, the photographer can carry a microphone with a recording function, the microphone is used to record the voice of the photographer to form voice data, and the mobile phone can be used to capture the voice formed by the photographer, and the voice recorded by the microphone. The data is sent to the mobile phone, and the mobile phone synthesizes the voice data and the video data into audio and video data.

In order to start recording at the same time when the mobile phone and the microphone start recording, the mobile phone sends a starting recording moment to the microphone before the mobile phone and the microphone start recording at the same time, so that the microphone starts recording the voice from the beginning recording time, and the mobile phone starts recording the video from the mobile phone. However, when the mobile phone sends the initial recording time to the microphone, there is a certain delay in signal transmission, resulting in a low timing accuracy between the mobile phone and the microphone.

Summary of the invention

Embodiments of the present invention provide a timing method, device, and system to improve timing accuracy.

An aspect of an embodiment of the present invention provides a method for timing, including:

The voice recording device receives the request information sent by the shooting device, where the request information is used to control the voice recording device to be in a sound monitoring state;

Recording the time at which the sound is heard when the voice recording device listens to the sound emitted by the photographing device;

The voice recording device calibrates the timing of the voice recording device according to the time at which the sound is monitored and the time information sent by the camera to the voice recording device.

Another aspect of an embodiment of the present invention provides a method for timing, including:

The photographing device sends request information to the voice recording device, and the request information is used to control the The voice recording device is in a sound monitoring state;

When the voice recording device is in a sound monitoring state, the photographing device emits a sound to cause the voice recording device to record a time at which the sound is monitored;

Transmitting, by the photographing device, time information to the voice recording device, so that the voice recording device calibrates the voice according to a time when the sound is monitored and a time information sent by the photographing device to the voice recording device Record the timing of the device.

Another aspect of the embodiments of the present invention provides a voice recording device, including:

a receiving module, configured to receive request information sent by the photographing device, where the request information is used to control the voice recording device to be in a sound monitoring state;

a sound monitoring module, configured to monitor a sound emitted by the shooting device;

a recording module, configured to record a time when the voice recording device listens to the sound emitted by the shooting device;

And a calibration module, configured to calibrate timing of the voice recording device according to a time when the voice recording device monitors the sound and time information sent by the shooting device to the voice recording device.

Another aspect of the embodiments of the present invention provides a photographing apparatus, including:

a sending module, configured to send request information to the voice recording device, where the request information is used to control the voice recording device to be in a sound monitoring state;

a sounding module, configured to emit a sound when the voice recording device is in a sound monitoring state, so that the voice recording device records a time when the sound is monitored;

The sending module is further configured to send time information to the voice recording device, so that the voice recording device is calibrated according to a time when the sound is monitored and a time information sent by the shooting device to the voice recording device. Timing of the voice recording device.

Another aspect of an embodiment of the present invention is to provide a timing system including the voice recording apparatus and the photographing apparatus.

The method, device and system provided by the embodiment of the present invention monitor the sound emitted by the shooting device through the voice recording device, and record the time at which the sound is monitored, according to the time at which the sound is monitored and the shooting device is sent to the voice recording device. Time information, calibrating the timing of the voice recording device, and realizing the timing between the voice recording device and the photographing device through sound transmission, and avoiding the time between the voice recording device and the photographing device by means of signal transmission Signal The delay brought by the transmission improves the accuracy of the time.

DRAWINGS

FIG. 1 is a flowchart of a method for timing according to an embodiment of the present invention;

2 is a flowchart of a method for timing according to another embodiment of the present invention;

FIG. 3 is a flowchart of a method for timing according to another embodiment of the present invention;

4 is a signaling diagram of a time synchronization method according to an embodiment of the present invention;

FIG. 5 is a signaling diagram of a time synchronization method according to another embodiment of the present invention;

FIG. 6 is a flowchart of a method for timing according to another embodiment of the present invention;

FIG. 7 is a flowchart of a method for timing according to another embodiment of the present invention;

FIG. 8 is a flowchart of a method for timing according to another embodiment of the present invention;

FIG. 9 is a structural diagram of a voice recording device according to an embodiment of the present invention;

FIG. 10 is a structural diagram of a voice recording device according to another embodiment of the present invention;

FIG. 11 is a structural diagram of a photographing apparatus according to an embodiment of the present invention;

FIG. 12 is a structural diagram of a photographing apparatus according to another embodiment of the present invention; FIG.

FIG. 13 is a structural diagram of a time alignment system according to an embodiment of the present invention.

detailed description

FIG. 1 is a flowchart of a method for timing according to an embodiment of the present invention. The embodiment of the present invention is directed to the prior art that the timing accuracy of the microphone is not high, and the mobile phone and the microphone cannot start recording at the same time, so that the voice data and the video data cannot be accurately matched, and the phenomenon that the photographer's mouth shape is not matched is provided. For the method of time, the specific steps of the method are as follows:

Step S101: The voice recording device receives the request information sent by the shooting device, where the request information is used to control the voice recording device to be in a sound monitoring state.

The execution subject of the embodiment is a voice recording device such as a digital microphone, which is disposed on the subject's clothes, for example, on the collar of the subject, for recording the voice data of the subject, and The voice recording device can also perform information interaction with the shooting device. The information interaction process can be a wired transmission mode or a wireless transmission mode. In this embodiment, the voice recording device and the shooting device perform information interaction through Bluetooth, and the shooting device can be used for The subject is photographed to obtain video data.

Before the voice recording device starts recording the voice, and before the shooting device starts shooting, the voice recording device and the photographing device are paired so that the voice recording device starts recording the voice from the same moment, and the photographing device starts shooting the video from the same moment. Specifically, the shooting device sends a time request to the voice recording device, and the voice recording device turns on the voice recording device after receiving the request, and is in a sound monitoring state, and monitors the sound emitted by the shooting device.

Step S102: When the voice recording device monitors the sound emitted by the photographing device, record the moment when the sound is monitored.

In this embodiment, the voice recording device can be placed beside the shooting device, so that the voice recording device can quickly and accurately monitor the sound emitted by the shooting device, and the voice recording device and the shooting device are placed in a less noisy environment. To avoid noise, the timing of the voice recording device and the shooting device is affected.

When the voice recording device monitors the sound emitted by the shooting device, the voice recording device immediately records the time at which the sound is monitored. For example, the time at which the voice recording device monitors the sound is 10:10:10, and the random time is 10:00. 10 minutes and 10 seconds are recorded in the memory of the voice recording device.

Step S103: The voice recording device calibrates the timing of the voice recording device according to the time when the sound is monitored and the time information sent by the shooting device to the voice recording device.

In this embodiment, the time information sent by the photographing device to the voice recording device is a time when the photographing device sends the sound; or the time information sent by the photographing device to the voice recording device is the photographing The difference between the time at which the device emits the sound and the time at which the voice recording device listens to the sound.

Assuming that the moment when the shooting device actually emits a sound is 10:10:8, the photographing device can transmit the moment at which the actual sound is emitted to the voice recording device at 10:10:8, and the voice recording device outputs the sound according to the photographing device. The time is 10 minutes and 8 seconds, and the time at which the sound is heard is 10:10:10, and the timing of the voice recording device is calibrated, for example, the timing of the voice recording device is slowed down by 2 seconds.

In addition, when the voice recording device monitors the sound and records the time at which the sound is monitored, 10:10:10, the time at which the sound is monitored is transmitted to the shooting device at 10:10:10, and the shooting device is based on the actual situation. The moment of the sound is 10:10:8, and the voice recording The time at which the device monitors the sound is 10:10:10, and the difference between the two moments is calculated, for example, -2, and the photographing device sends the difference-2 of the two moments to the voice recording device, and the voice recording device receives After the difference of -2, slow down your own time by 2 seconds.

In addition, the photographing device can transmit time information to the voice recording device by using a Bluetooth transmission method, for example, 10:10:8, or -2, and can also send time information such as 10:10:8 or 2 to the voice recording device through the sound wave, wherein The time information can be carried in the sound wave.

In the embodiment of the present invention, the voice recording device monitors the sound emitted by the shooting device, and records the time when the sound is monitored, and calibrates the timing of the voice recording device according to the time when the sound is monitored and the time information sent by the shooting device to the voice recording device. By means of sound transmission, the timing between the voice recording device and the photographing device is realized, and the time between the voice recording device and the photographing device is realized by the signal transmission manner, the delay caused by the signal transmission is avoided, and the time is improved. Time accuracy.

FIG. 2 is a flowchart of a method for timing according to another embodiment of the present invention. The specific steps of the time synchronization method provided in this embodiment are as follows:

Step S201: The voice recording device receives the request information sent by the shooting device, where the request information is used to control the voice recording device to be in a sound monitoring state.

Step S201 is consistent with step S101, and the specific method is not described herein again.

Step S202: When the voice recording device monitors the sound emitted by the shooting device, record the time when the sound is monitored.

Step S202 is the same as step S102. The specific method is not described here.

Step S203: The voice recording device sends the moment when the sound is monitored to the photographing device, so that the photographing device listens to the moment according to the moment when the photographing device emits the sound and the voice recording device The time of the sound determines the time information.

The voice recording device sends the sound to the shooting device at 10:10:10, and the shooting device 10:10:8 according to the actual sound, and the time 10:10 when the voice recording device monitors the sound. In 10 seconds, the difference between the two moments, for example -2, is calculated, and the photographing device transmits the difference-2 of the two moments to the voice recording device.

Step S204: The voice recording device calibrates the voice recording device according to the time when the sound is monitored and the time information sent by the shooting device to the voice recording device. Timing.

After receiving the difference of -2, the voice recording device slows down its own time by 2 seconds. For example, the current timing of the voice recording device is 10:10:10, and after slowing down by 2 seconds, the time is 10:10:8, which is guaranteed to be the same as the timing of the shooting device.

In this embodiment, the difference between the two moments is calculated by the time when the photographing device emits the sound according to the actual time, and the time at which the voice recording device monitors the sound, and the difference between the two moments is sent to the voice recording device, so that The voice recording device directly calibrates its own timing according to the difference, which saves the calculation amount of the voice recording device, thereby improving the timing calibration efficiency of the voice recording device.

FIG. 3 is a flowchart of a method for timing according to another embodiment of the present invention. In this embodiment, the sound emitted by the photographing device includes a first sound and a second sound, and the photographing device emits the first sound earlier than the time when the photographing device emits the second sound; The specific steps of the time method are as follows:

Step S301: The voice recording device receives the request information sent by the shooting device, where the request information is used to control the voice recording device to be in a sound monitoring state.

Step S301 is the same as step S101. The specific method is not described here.

Step S302: When the voice recording device monitors the first sound sent by the photographing device, send a historical time of the last calibration timing of the voice recording device to the photographing device, so that the photographing device Based on the historical time, and the current time, it is determined whether the voice recording device needs to calibrate the timing at the current time.

Since the crystal oscillator of the voice recording device has a decrease in accuracy with the use of time, the voice recording device may generate a few seconds of error within a few days, that is, within a few days from the moment when the voice recording device is calibrated. A few seconds of error. In this embodiment, the voice recording device records the historical time of the last calibration timing. For example, the historical time of the last calibration timing of the voice recording device is 8:8:8 on October 4, 2016, when the voice recording device monitors When the first sound from the shooting device is taken, the recording time of the last recording time of the voice recording device is sent to the shooting device at 8:8:8 on October 4, 2016, assuming that the current time is 10:00 on October 7, 2016. 10 minutes and 8 seconds, the historical time is separated from the current time by 3 days, and the shooting device determines whether the voice recording device is based on the historical time and the current time. It is necessary to calibrate the timing at the current time. Specifically, determine whether the time between the historical time and the current time exceeds the preset time. If the preset time is exceeded, the timing of the voice recording device needs to be calibrated at the current time. If the preset time is not exceeded, It is not necessary to calibrate the timing of the voice recording device at the current time. It is assumed that the preset time is 3 days, that is, the voice recording device needs to calibrate the time every 3 days. In this embodiment, the historical time is separated from the current time by 3 days, and therefore, the timing needs to be calibrated at the current time.

Step S303: If the voice recording device needs to calibrate the time at the current time, the voice recording device monitors the second sound sent by the shooting device, and records the time when the second sound is monitored.

When the photographing device determines that the voice recording device needs to calibrate the timing at the current time, and issues a second sound, that is, the second sound is emitted at 10:10:8, and the voice recording device listens to the second sound and records the monitor. The moment of the second sound, for example 10:10:10.

Step S304: The voice recording device calibrates the timing of the voice recording device according to the time when the second sound is monitored and the time information sent by the shooting device to the voice recording device.

The shooting device can send the second sound to the voice recording device at 10:10:8, so that the voice recording device can output the second sound according to the shooting device at 10:10:8, and the voice recording device. The time at which the second sound is monitored is 10:10:10, and the timing of the voice recording device is calibrated, for example, the timing of the voice recording device is slowed down by 2 seconds.

In addition, the voice recording device monitors the second sound, and records the time when the second sound is monitored at 10:10:10, and the time when the second sound is monitored is sent to the shooting device at 10:10:10. The shooting device calculates the difference between the two moments, for example, -2, according to the time at which the second sound is actually emitted, 10:10:8, and the time at which the voice recording device monitors the second sound, 10:10:10. The photographing device sends the difference-2 of the foregoing two moments to the voice recording device, and after receiving the difference-2, the voice recording device slows down its own timing by 2 seconds.

In addition, the first sound and the second sound have different frequencies, different frequencies, and codes. Different ways.

In this embodiment, the shooting device sends two sounds before and after, after the first sound is sent, the voice recording device sends the historical time of the last calibration timing to the shooting device, and the shooting device according to the historical time of the last calibration time of the voice recording device and The current time determines whether the voice recording device needs to calibrate the time at the current time. If the time between the historical time and the current time exceeds the preset time, the timing of the voice recording device needs to be calibrated at the current time, if the historical time is not separated from the current time. If the preset time is exceeded, it is not necessary to calibrate the timing of the voice recording device at the current time, which saves the subsequent timing process.

FIG. 4 is a signaling diagram of a time synchronization method according to an embodiment of the present invention. As shown in FIG. 4, the steps of the time synchronization method provided by this embodiment include the following:

Step 41: The photographing device sends a timing request to the voice recording device.

Step 42: The voice recording device turns on the device.

Step 43: The voice recording device sends an acknowledgement message to the photographing device, indicating that the voice recording device has received the request for the time;

Step 44: The photographing device sends a first sound;

Step 45: The voice recording device monitors the first sound;

Step 46: The voice recording device sends the historical time of the last calibration timing to the photographing device;

Step 47: The photographing device determines that the historical time is separated from the current time by more than a preset time;

Step 48: The shooting device sends a second sound;

Step 49: The voice recording device monitors the second sound and records the time when the second sound is monitored;

Step 410: The photographing device sends a moment when the photographing device sends a second sound to the voice recording device.

Step 411: The voice recording device calibrates the timing according to the time when the shooting device sends the second sound and the time when the voice recording device monitors the second sound.

FIG. 5 is a signaling diagram of a timing method according to another embodiment of the present invention. As shown in FIG. 5, the steps of the time synchronization method provided by this embodiment include the following:

Step 51: The photographing device sends a time request to the voice recording device.

Step 52: The voice recording device turns on the device.

Step 53: The voice recording device sends an acknowledgement message to the photographing device, indicating that the voice recording device has received the request for the time;

Step 54: The photographing device sends a first sound;

Step 55: The voice recording device monitors the first sound;

Step 56: The voice recording device sends the historical time of the last calibration timing to the photographing device;

Step 57: The photographing device determines that the historical time is separated from the current time by more than a preset time;

Step 58: The shooting device sends a second sound;

Step 59: The voice recording device monitors the second sound and records the time when the second sound is monitored;

Step 510: The voice recording device sends a time when the second sound is monitored to the shooting device.

Step 511: The photographing device calculates a difference between a time when the second sound is monitored and a time when the second sound is sent;

Step 512: The photographing device sends the difference to the voice recording device.

Step 513: The voice recording device calibrates the timing according to the difference.

The method described in FIG. 4 or FIG. 5 is the same as the above-described embodiment, and the specific method is not described again.

FIG. 6 is a flowchart of a method for timing according to another embodiment of the present invention. The specific steps of the time synchronization method provided in this embodiment are as follows:

Step S601: The photographing device sends request information to the voice recording device, where the request information It is used to control the voice recording device to be in a sound monitoring state.

Step S602: When the voice recording device is in a sound monitoring state, the shooting device emits a sound, so that the voice recording device records the time when the sound is monitored.

Step S603, the photographing device sends time information to the voice recording device, so that the voice recording device is calibrated according to the time when the sound is monitored and the time information sent by the photographing device to the voice recording device. Timing of the voice recording device.

The time information sent by the photographing device to the voice recording device is a time at which the photographing device emits the sound. Alternatively, the time information sent by the photographing device to the voice recording device is a difference between a time when the photographing device emits the sound and a moment when the voice recording device listens to the sound.

The principle of the time-correlation method described in this embodiment is the same as that of the time-sharing method described in the embodiment shown in FIG. 1. The specific method is not described again.

FIG. 7 is a flowchart of a method for timing according to another embodiment of the present invention. The specific steps of the time synchronization method provided in this embodiment are as follows:

Step S701: The photographing device sends request information to the voice recording device, where the request information is used to control the voice recording device to be in a sound monitoring state.

Step S702: When the voice recording device is in the sound monitoring state, the shooting device emits a sound, so that the voice recording device records the time when the sound is monitored.

Step S703: The photographing device receives a time when the voice recording device sent by the voice recording device listens to the sound.

Step S704: The photographing device determines the time information according to a timing at which the photographing device emits the sound and a timing at which the voice recording device monitors the sound.

Step S705: The photographing device sends time information to the voice recording device, so that The voice recording device calibrates the timing of the voice recording device according to the time at which the sound is monitored and the time information sent by the camera to the voice recording device.

The principle of the time-sharing method described in this embodiment is the same as the principle of the time-sharing method described in the embodiment shown in FIG. 2, and the specific method is not described again.

FIG. 8 is a flowchart of a method for timing according to another embodiment of the present invention. The specific steps of the time synchronization method provided in this embodiment are as follows:

Step S801: The photographing device sends request information to the voice recording device, where the request information is used to control the voice recording device to be in a sound monitoring state.

Step S802: When the voice recording device is in the sound monitoring state, the photographing device issues the first sound, so that the voice recording device sends the historical time of the last calibration timing to the photographing device.

Step S803: The photographing device determines, according to the historical time and the current time, whether the voice recording device needs to calibrate the timing at the current time.

Step S804: If the voice recording device needs to calibrate the timing at the current time, the photographing device issues the second sound, so that the voice recording device records the moment when the second sound is monitored.

Step S805, the photographing device sends time information to the voice recording device, so that the voice recording device according to the time when the second sound is monitored and the time information sent by the photographing device to the voice recording device , calibrating the timing of the voice recording device.

In this embodiment, the first sound and the second sound have different frequencies, different frequencies, and different encoding modes. In addition, the shooting device may send the time information to the voice recording device by using a wireless transmission manner, or may send the time information to the voice recording device by using a sound wave, where the sound wave carries the time information.

The principle of the timing method described in this embodiment and the timing method described in the embodiment shown in FIG. The principle is the same, and the specific method will not be described again.

FIG. 9 is a structural diagram of a voice recording device according to an embodiment of the present invention. The voice recording device provided by the embodiment of the present invention can perform the processing flow provided by the embodiment of the time method. As shown in FIG. 9, the voice recording device 90 includes a receiving module 91, a sound monitoring module 92, a recording module 93, and a calibration module 94. The receiving module 91 is configured to receive the request information sent by the shooting device, where the request information is used to control the voice recording device to be in a sound monitoring state; the sound monitoring module 92 is configured to monitor the sound emitted by the shooting device; When the voice recording device monitors the sound emitted by the photographing device, recording the moment when the sound is monitored; the calibration module 94 is configured to: according to the moment when the voice recording device monitors the sound and the photographing device Time information sent to the voice recording device, calibrating the timing of the voice recording device.

FIG. 10 is a structural diagram of a voice recording device according to another embodiment of the present invention. On the basis of the above embodiment, the time information sent by the photographing device to the voice recording device is the time at which the photographing device emits the sound. Or the time information sent by the photographing device to the voice recording device is a time at which the photographing device emits the sound and the voice recording The difference in the time at which the device listens to the sound.

The voice recording device 90 further includes: a sending module 95, configured to send the moment when the sound is monitored to the photographing device, so that the photographing device emits the sound according to the photographing device The time at which the voice recording device listens to the sound determines the time information.

Further, the sound emitted by the photographing device includes a first sound and a second sound, and the photographing device emits the first sound earlier than the photographing device emits the second sound. The sending module 95 is further configured to: when the voice recording device monitors the first sound sent by the photographing device, send a historical time of the last calibration timing of the voice recording device to the photographing device, so that Determining, according to the historical time, and the current time, whether the voice recording device needs to calibrate the time at the current time; if the voice recording device needs to calibrate the time at the current time, the sound monitoring module 92 monitors the shooting device The second sound is sent; the recording module 93 records the time at which the sound monitoring module listens to the second sound.

The first sound and the second sound have different frequencies, different frequencies, and different encoding modes.

The voice recording device provided by the embodiment of the present invention may be specifically used to perform the method embodiment provided in FIG. 1 above, and specific functions are not described herein again.

In the embodiment of the present invention, the time difference between the two moments is calculated by the time when the photographing device emits the sound according to the actual time, and the time at which the voice recording device monitors the sound, and the difference between the two moments is sent to the voice recording device. The voice recording device directly calibrates its own timing according to the difference, which saves the calculation amount of the voice recording device, thereby improving the timing calibration efficiency of the voice recording device; the shooting device emits two sounds before and after the first sound is emitted, and the voice is recorded. The recording device sends the historical time of the last calibration timing to the photographing device, and the photographing device determines whether the voice recording device needs to be calibrated at the current time according to the historical time and current time of the last calibration timing of the voice recording device, if the historical time is separated from the current time. If the time exceeds the preset time, you need to calibrate the timing of the voice recording device at the current time. If the time between the historical time and the current time does not exceed the preset time, you do not need to calibrate the timing of the voice recording device at the current time, saving the follow-up. The right time process.

FIG. 11 is a structural diagram of a photographing apparatus according to an embodiment of the present invention. The photographing device provided by the embodiment of the present invention may perform the processing flow provided by the embodiment of the method, as shown in FIG. 11, the photographing device 110 includes a sending module 111 and a sounding module 112, and the sending module 111 is configured to send the request information to the voice recording device. The request information is used to control the voice recording device to be in a sound monitoring state; the sounding module 112 is configured to emit a sound when the voice recording device is in a sound monitoring state, so that the voice recording device records the sound to be monitored. a moment of the sound; the sending module 111 is further configured to send the time information to the voice recording device, so that the voice recording device according to the time when the sound recording device is monitored and the time that the shooting device sends to the voice recording device Information, calibrating the timing of the voice recording device.

FIG. 12 is a structural diagram of a photographing apparatus according to another embodiment of the present invention. On the basis of the embodiment shown in FIG. 11, the time information sent by the sending module 111 to the voice recording device is the time when the shooting device sends the sound. Alternatively, the time information sent by the sending module 111 to the voice recording device is a difference between a time when the shooting device emits the sound and a time when the voice recording device listens to the sound.

In addition, the photographing device 110 further includes a receiving module 113 and a determining module 114, where the receiving module 113 is configured to receive a moment that the voice recording device sends the sound, and the determining module 114 is configured to shoot according to the sounding device. The time information is determined when the device emits the sound and when the voice recording device listens to the sound.

The sound emitted by the sound module 112 includes a first sound and a second sound, and the sounding module 112 emits the first sound earlier than the sounding module emits the second sound; when the voice recording device is in the sound monitoring state, the sound is emitted. The module 112 sends the first sound, so that the voice recording device sends the historical time of the last calibration timing to the photographing device; the determining module 114 is specifically configured to determine the according to the historical time and the current time. Voice recording Whether the device needs to calibrate the timing at the current time; if the voice recording device needs to calibrate the timing at the current time, the sounding module 112 issues the second sound, so that the voice recording device records the sound of the second sound. time. The first sound and the second sound have different frequencies, different frequencies, and different encoding modes.

The sending module 111 sends the time information to the voice recording device in a wireless transmission manner; or sends the time information to the voice recording device through sound waves, where the sound wave carries the time information.

The photographic device provided by the embodiment of the present invention may be specifically used to perform the method embodiment provided in FIG. 6 above, and specific functions are not described herein again.

FIG. 13 is a structural diagram of a time alignment system according to an embodiment of the present invention. The time synchronization system provided by the embodiment of the present invention can perform the processing flow provided by the embodiment of the time method. As shown in FIG. 13, the time synchronization system 130 includes the voice recording device 90 in the above embodiment and the shooting device 110 in the above embodiment. .

The timing system provided by the embodiment of the present invention can execute the processing flow provided by the embodiment of the time method.

In summary, the embodiment of the present invention monitors the sound emitted by the photographing device through the voice recording device, and records the time at which the sound is monitored, and calibrates according to the time when the sound is monitored and the time information sent by the photographing device to the voice recording device. Timing of voice recording equipment, through sound When the sound transmission realizes the timing between the voice recording device and the photographing device, the time between the voice recording device and the photographing device is realized by the signal transmission manner, the delay caused by the signal transmission is avoided, and the timing is improved. Accuracy; the time difference between the two moments is calculated by the time when the photographing device emits the sound according to the actual sound, and the time at which the voice recording device monitors the sound, and the difference between the two moments is sent to the voice recording device, so that The voice recording device directly calibrates its own timing according to the difference, which saves the calculation amount of the voice recording device, thereby improving the timing calibration efficiency of the voice recording device; the shooting device emits two sounds before and after, the first sound is emitted, and the voice recording is performed. The device sends the historical time of the last calibration timing to the shooting device. The shooting device determines whether the voice recording device needs to be calibrated at the current time according to the historical time and current time of the last calibration timing of the voice recording device, if the historical time is separated from the current time. If the time exceeds the preset time, you need to calibrate the voice recording at the current time. Timing equipment, if historical time and the time gap between the current time does not exceed the preset time, you do not need clocking a current time voice recording equipment calibration, saving time on the subsequent process.

In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The above software functional unit is stored in a storage medium, and the package A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform some of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

A person skilled in the art can clearly understand that for the convenience and brevity of the description, only the division of each functional module described above is exemplified. In practical applications, the above function assignment can be completed by different functional modules as needed, that is, the device is installed. The internal structure is divided into different functional modules to perform all or part of the functions described above. For the specific working process of the device described above, refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

A timing method, characterized in that it comprises:

The voice recording device receives the request information sent by the shooting device, where the request information is used to control the voice recording device to be in a sound monitoring state;

Recording the time at which the sound is heard when the voice recording device listens to the sound emitted by the photographing device;

The voice recording device calibrates the timing of the voice recording device according to the time at which the sound is monitored and the time information sent by the camera to the voice recording device.
The method according to claim 1, wherein the time information sent by the photographing device to the voice recording device is a time at which the photographing device emits the sound.
The method according to claim 1, wherein the time information sent by the photographing device to the voice recording device is a time when the photographing device emits the sound and the voice recording device listens to the sound. The difference in time.
The method according to claim 3, wherein after the recording of the sounded device by the voice recording device, the method further comprises:

Transmitting, by the voice recording device, the moment when the sound is monitored to the photographing device, so that the photographing device according to the moment when the photographing device emits the sound and the moment when the voice recording device monitors the sound , determining the time information.
The method according to claim 1, wherein the sound emitted by the photographing device comprises a first sound and a second sound, and the photographing device emits the first sound earlier than the photographing device emits the second sound time;

When the voice recording device monitors the sound emitted by the photographing device, recording the moment when the sound is monitored, including:

Transmitting a history time of the last calibration timing of the voice recording device to the photographing device when the voice recording device monitors the first sound sent by the photographing device, so that the photographing device according to the The historical time, and the current time, determining whether the voice recording device needs to calibrate the time at the current time;

If the voice recording device needs to calibrate the timing at the current time, the voice recording device monitors the second sound emitted by the photographing device, and records the moment when the second sound is monitored.
The method according to claim 5, wherein the first sound and the second sound have different frequencies, different frequencies, and different encoding modes.
A timing method, characterized in that it comprises:

The photographing device sends request information to the voice recording device, where the request information is used to control the voice recording device to be in a sound monitoring state;

When the voice recording device is in a sound monitoring state, the photographing device emits a sound to cause the voice recording device to record a time at which the sound is monitored;

Transmitting, by the photographing device, time information to the voice recording device, so that the voice recording device calibrates the voice according to a time when the sound is monitored and a time information sent by the photographing device to the voice recording device Record the timing of the device.
The method according to claim 7, wherein the time information sent by the photographing device to the voice recording device is a time at which the photographing device emits the sound.
The method according to claim 7, wherein the time information sent by the photographing device to the voice recording device is a time when the photographing device emits the sound and the voice recording device listens to the sound. The difference in time.
The method according to claim 9, wherein the voice recording device records the time after the sound is monitored, and further includes:

Receiving, by the photographing device, a moment when the voice recording device that is sent by the voice recording device monitors the sound;

The photographing device determines the time information according to a timing at which the photographing device emits the sound and a timing at which the voice recording device listens to the sound.
The method according to claim 7, wherein the sound emitted by the photographing device comprises a first sound and a second sound, and the photographing device emits the first sound earlier than the photographing device emits the second sound time;

When the voice recording device is in a sound monitoring state, the shooting device emits a sound, so that the voice recording device records the moment when the sound is monitored, including:

When the voice recording device is in a sound monitoring state, the photographing device issues the first sound, so that the voice recording device sends a historical time of the last calibration timing to the photographing device;

The photographing device determines the voice recording according to the historical time and the current time Whether the equipment needs to be calibrated at the current time;

If the voice recording device needs to calibrate the timing at the current time, the photographing device issues the second sound to cause the voice recording device to record the moment when the second sound is monitored.
The method according to claim 11, wherein the first sound and the second sound have different frequencies, different frequencies, and different encoding modes.
The method according to claim 7, wherein the photographing device sends time information to the voice recording device, including:

Transmitting, by the photographing device, the time information to the voice recording device by using a wireless transmission manner; or

The photographing device transmits the time information to the voice recording device through sound waves, and the sound wave carries the time information.
A voice recording device, comprising:

a receiving module, configured to receive request information sent by the photographing device, where the request information is used to control the voice recording device to be in a sound monitoring state;

a sound monitoring module, configured to monitor a sound emitted by the shooting device;

a recording module, configured to record a time when the voice recording device listens to the sound emitted by the shooting device;

And a calibration module, configured to calibrate timing of the voice recording device according to a time when the voice recording device monitors the sound and time information sent by the shooting device to the voice recording device.
The voice recording device according to claim 14, wherein the time information sent by the photographing device to the voice recording device is a time at which the photographing device emits the sound.
The voice recording device according to claim 14, wherein the time information sent by the photographing device to the voice recording device is a time when the photographing device emits the sound and the voice recording device listens to the The difference in the moment of the sound.
The voice recording device of claim 16, further comprising:

a sending module, configured to send a moment when the sound is monitored to the photographing device, so that the photographing device according to the moment when the photographing device emits the sound and the voice recording The time information is determined when the device listens to the sound.
The voice recording device according to claim 14, wherein the sound emitted by the photographing device comprises a first sound and a second sound, and the photographing device emits the first sound earlier than the photographing device issues a second The time of sound;

The sending module is further configured to: when the voice recording device monitors the first sound sent by the photographing device, send a historical time of the last calibration timing of the voice recording device to the photographing device, so that Determining, by the photographing device, whether the voice recording device needs to calibrate the timing at the current time according to the historical time and the current time;

If the voice recording device needs to calibrate the timing at the current time, the sound monitoring module monitors the second sound emitted by the photographing device;

The recording module records a time when the sound monitoring module monitors the second sound.
The voice recording device according to claim 18, wherein the first sound and the second sound have different frequencies, different frequencies, and different encoding modes.
A photographing apparatus, comprising:

a sending module, configured to send request information to the voice recording device, where the request information is used to control the voice recording device to be in a sound monitoring state;

a sounding module, configured to emit a sound when the voice recording device is in a sound monitoring state, so that the voice recording device records a time when the sound is monitored;

The sending module is further configured to send time information to the voice recording device, so that the voice recording device is calibrated according to a time when the sound is monitored and a time information sent by the shooting device to the voice recording device. Timing of the voice recording device.
The photographing apparatus according to claim 20, wherein the time information sent by the transmitting module to the voice recording device is a time at which the photographing device emits the sound.
The photographing apparatus according to claim 20, wherein the time information sent by the transmitting module to the voice recording device is a time when the photographing device emits the sound and the voice recording device monitors the sound The difference in the moment.
The photographing apparatus according to claim 22, further comprising:

a receiving module, configured to receive a time when the voice recording device sent by the voice recording device monitors the sound;

a determining module, configured to determine the time information according to a time when the shooting device emits the sound and a time when the voice recording device monitors the sound.
The photographing apparatus according to claim 23, wherein the sound emitted by the sounding module comprises a first sound and a second sound, and the sounding module emits the first sound earlier than the sounding module emits the second sound time;

When the voice recording device is in the sound monitoring state, the sounding module issues the first sound, so that the voice recording device sends the historical time of the last calibration timing to the photographing device;

The determining module is specifically configured to determine, according to the historical time, and the current time, whether the voice recording device needs to calibrate the time at the current time;

If the voice recording device needs to calibrate the timing at the current time, the sounding module issues the second sound, so that the voice recording device records the moment when the second sound is monitored.
The photographing apparatus according to claim 24, wherein the first sound and the second sound have different frequencies, different frequencies, and different encoding modes.
The photographing apparatus according to claim 20, wherein the sending module transmits the time information to the voice recording device in a wireless transmission manner; or, the sound information is sent to the voice recording device by the sound wave. The sound wave carries the time information.
A timing system, comprising: the voice recording device according to any one of claims 14 to 19, and the photographing device according to any one of claims 20-26.