CN202818456U - Camera attitude data transmission apparatus - Google Patents
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Abstract
The utility model provides a camera attitude data transmission apparatus which comprises a sending module and a receiving module. The sending module is connected with the receiving module, and is used for reading camera attitude data and a frame-based synchronous pulse, loading the serialized camera attitude data to a 10KHz carrier wave in a mode of phase modulation based on the frame-based synchronous pulse, mixing the data with audio from a camera, and transmitting mixed audio with the camera attitude data to the receiving module via an audio channel. The receiving module is used for receiving the mixed audio with the camera attitude data, demodulating the camera attitude data after the camera attitude data is separated from the audio, and outputting the camera attitude data and the audio from the camera. According to the camera attitude data transmission apparatus, the common audio channel is utilized to transmit the camera attitude data to a far end without an independent data channel for transmission, a system has a simple structure, and costs of the system are lowered.
Description
Technical Field
The utility model relates to a camera gesture data transmission field, more specifically relates to a camera gesture data transmission device.
Background
In recent years, applications of information distribution systems and broadcast television are ubiquitous, and the information distribution systems and broadcast television are used in various industries and various occasions throughout the life and society of people. In the prior art, the camera can only transmit video and audio to a far end but cannot transmit other data, although systems for transmitting other data exist, the systems adopt independent data channels for transmission, various interferences in the transmission process cannot be avoided, the complexity of the systems is increased, the system cost is increased, meanwhile, the one-to-one correspondence between the transmitted data and the frames of the video cannot be ensured, and inconvenience is brought to a user who cannot know the specific situation of video shooting in more detail when watching the video.
SUMMERY OF THE UTILITY MODEL
In view of this, the main object of the present invention is to provide a camera attitude data transmission device, which can solve the problem of unable transmission of attitude data shot by a camera in the field existing in the prior art.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the utility model provides a camera gesture data transmission device, include: the device comprises a sending module and a receiving module, wherein the sending module is connected with the receiving module and used for reading camera attitude data and frame synchronization pulses, serializing the camera attitude data based on the frame synchronization pulses, loading the serialized camera attitude data onto a 10KHz carrier wave in a phase modulation mode, mixing the camera attitude data with audio from a camera, and transmitting the mixed audio with the camera attitude data to the receiving module through an audio channel; and the receiving module is used for receiving the mixed audio with the camera attitude data, demodulating the camera attitude data after separating the camera attitude data from the audio, and outputting the camera attitude data and the camera audio.
Preferably, the transmission module includes: the device comprises a 10KHz oscillator, a 10KHz inverter, a 10KHz alternative electronic switch, a core processor, a 10KHz band-pass filter, a 10KHz wave trap and a mixer, wherein the 10KHz oscillator is respectively connected with the 10KHz inverter and the 10KHz alternative electronic switch and is used for generating a 10KHz carrier wave, one path of the carrier wave passes through the 10KHz inverter and then is sent to a second input port of the 10KHz alternative electronic switch, and the other path of the carrier wave is directly sent to a first input port of the 10KHz alternative electronic switch; the core processor is connected with the 10KHz alternative electronic switch and used for reading the camera attitude data and the frame synchronization pulse, serializing the camera attitude data based on the frame synchronization pulse and controlling the level of a port of the 10KHz alternative electronic switch; the 10KHz alternative electronic switch is used for determining the switching direction according to the control of the core processor and outputting a 10KHz carrier wave with the camera attitude data to the 10KHz band-pass filter; and the 10KHz mixer is connected with the 10KHz band-pass filter and the 10KHz wave trap and used for mixing the 10KHz carrier wave with the camera attitude data passing through the 10KHz band-pass filter with the audio signal of the camera processed by the 10KHz wave trap and outputting the mixed signal to the receiving module.
Preferably, the receiving module includes: the device comprises a 10KHz wave trap, a 10KHz band-pass filter, a 10KHz limiting amplifier, a 10KHz oscillator, a 10KHz phase discriminator and a core processor, wherein the 10KHz wave trap is used for receiving mixed audio with camera attitude data and outputting audio signals after a 10KHz carrier is removed; the 10KHz band-pass filter is used for receiving mixed audio with camera attitude data, taking out carrier signals, and outputting the carrier signals to the first path of the 10KHz phase discriminator for input after the carrier signals are subjected to amplitude limiting and amplification by the 10KHz amplitude limiting amplifier; the 10KHz oscillator is used for generating a 10KHz carrier wave and outputting the 10KHz carrier wave to a second path of input of the 10KHz phase discriminator; and the core processor is used for acquiring the camera attitude data according to the output jump of the 10KHz phase detector and outputting the camera attitude data.
Preferably, the 10KHz alternative electronic switch determines the switching direction to operate specifically: when the level of the control port of the 10KHz alternative electronic switch is high, the input is switched to the first path, and when the level of the control port of the 10KHz alternative electronic switch is low, the input is switched to the second path.
Preferably, the apparatus further comprises a frame synchronization generator, respectively connected to the camera and the transmitting module, for separating the frame synchronization pulse from the video signal output from the camera and transmitting the frame synchronization pulse to the transmitting module.
Preferably, the device further comprises a posture data providing module connected with the sending module and used for sending the camera posture data to the sending module.
The technical effects of the utility model:
1. because the camera attitude data is transmitted to the far end by using the common audio channel, the camera attitude data does not need to be transmitted by an independent data channel, the system has simple structure, and the system cost is reduced;
2. because the utility model adopts the phase modulation mode to load the camera attitude data on the 10KHz carrier, various interferences in the transmission process can be avoided, and the camera attitude data has strong anti-interference performance;
3. because the utility model discloses use synchronous pulse as the benchmark, realize the data and the video frame one-to-one of transmission, the more detailed, real-time condition of shooing of display terminal of being convenient for has made things convenient for the user.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
fig. 1 shows a schematic structural diagram of a camera attitude data transmission device according to a first embodiment of the present invention;
fig. 2 shows a schematic structural diagram of a sending module according to a second embodiment of the present invention;
fig. 3 shows a schematic structural diagram of a receiving module according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a camera attitude data transmission device according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of a camera posture data recording device according to a fifth embodiment of the present invention;
fig. 6 shows a flowchart of a camera attitude data transmission method according to a sixth embodiment of the present invention;
fig. 7 shows a work flow diagram of a sending module of a camera attitude data transmission method according to a seventh embodiment of the present invention;
fig. 8 shows a work flow chart of a receiving module of a camera attitude data transmission method according to the eighth embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example one
Fig. 1 shows a schematic structural diagram of a camera attitude data transmission device according to a first embodiment of the present invention; as shown in fig. 1, the apparatus includes: a transmitting module 10 and a receiving module 20, wherein,
the sending module 10 is connected with the receiving module 20 and used for reading the camera attitude data and the frame synchronization pulse, serializing the camera attitude data based on the frame synchronization pulse, loading the serialized camera attitude data onto a 10KHz carrier wave in a phase modulation mode, mixing the camera attitude data with the audio from the camera, and transmitting the mixed audio with the camera attitude data to the receiving module 20 through an audio channel;
and the receiving module 20 is configured to receive the mixed audio with the camera pose data, demodulate the camera pose data after separating the camera pose data from the audio, and output the camera pose data and the camera audio.
The camera attitude data in the embodiment includes attitude data such as a camera shooting angle, a direction, a speed, longitude and latitude of a geographic position and the like; it is possible to transmit a minimum of 12 bytes of pose information and other data in one video frame time.
The utility model discloses the data that sending module sent include: preamble, data, check code and stop bit. The specific format is as follows:
the lead code is a 1 millisecond 10KHz positive phase carrier and a 0.5 millisecond 10KHz negative phase carrier;
bits 0 to Bit95 are data, and each Bit of data is composed of a 10KHz positive phase carrier of 0.2 msec or 0.1 msec and a 10KHz negative phase carrier of 0.1 msec. If the value is 1: the normal phase carrier is 0.2 ms and the reverse phase carrier is 0.1 ms. If the value is 0: the normal phase carrier wave is 0.1 millisecond, and the reverse phase carrier wave is 0.1 millisecond;
bits 96 to Bit103 are check codes, and each Bit of data is composed of a 10KHz positive phase carrier of 0.2 ms or 0.1 ms and a 10KHz negative phase carrier of 0.1 ms. If the value is 1: the normal phase carrier is 0.2 ms and the reverse phase carrier is 0.1 ms. If the value is 0: the normal phase carrier is 0.1 ms and the reverse phase carrier is 0.1 ms. The check code value is the lower 8 bits of the sum of the first 12 bytes;
the stop bit is a positive phase carrier of 0.3 milliseconds indicating the end of the attitude data transmission for the frame.
In order to ensure that the data is strictly related to the video pictures, the data must be transmitted within the time of one frame of video. Calculated at 30 frames per second, 12 bytes of data and a direct check data can be transmitted per frame. In addition to transmitting pose data, other data related to the video image may also be transmitted. If the number of bytes to be transferred is less than 12 bytes, the number of bits to be transferred can be reduced accordingly.
Because the utility model discloses an embodiment utilizes ordinary audio channel with camera gesture data transmission to the distal end, does not need solitary data channel to transmit, and system simple structure has reduced the system cost.
Example two
Fig. 2 shows a schematic structural diagram of a sending module according to a second embodiment of the present invention; as shown in fig. 2, the transmission module 10 includes: a 10KHz oscillator 102, a 10KHz inverter 104, a 10KHz alternative electronic switch 106, a core processor 108, a 10KHz band pass filter 110, a 10KHz trap 112, and a mixer 114, wherein,
a 10KHz oscillator 110 connected to the 10KHz inverter 104 and the 10KHz alternative electronic switch 106, respectively, for generating a 10KHz carrier, one path of which passes through the 10KHz inverter 104 and then is transmitted to a second input port of the 10KHz alternative electronic switch 106, and the other path of which is directly transmitted to a first input port of the 10KHz alternative electronic switch 106;
the core processor 108 is connected with the 10KHz alternative electronic switch 106 and is used for reading the camera attitude data and the frame synchronization pulse, serializing the camera attitude data based on the frame synchronization pulse and controlling the level of the port of the 10KHz alternative electronic switch 106;
a 10KHz alternative electronic switch 106 for determining the switching direction according to the control of the core processor 108 and outputting the 10KHz carrier with the camera attitude data to a 10KHz band pass filter 110;
and a 10KHz mixer 114 connected to the 10KHz band pass filter 110 and the 10KHz trap 112, for mixing the 10KHz carrier wave with the camera attitude data passing through the 10KHz band pass filter 110 with the camera audio signal processed by the 10KHz trap 112 and outputting the mixed signal to the receiving module 20.
The 10KHz alternative electronic switch determines the switching direction and is specifically operated as follows: when the level of the control port of the 10KHz alternative electronic switch is high, the input is switched to the first path, and when the level of the control port of the 10KHz alternative electronic switch is low, the input is switched to the second path.
Because the embodiment of the utility model discloses a mode that adopts the phase modulation is with camera gesture data loading to 10KHz carrier wave, can avoid various interference in the transmission course, has very strong interference immunity.
EXAMPLE III
Fig. 3 shows a schematic structural diagram of a receiving module according to a third embodiment of the present invention; as shown in fig. 3, the receiving module 20 includes: a 10KHz notch 202, a 10KHz band pass filter 204, a 10KHz limiting amplifier 206, a 10KHz oscillator 208, a 10KHz phase detector 210, and a core processor 212, wherein,
a 10KHz wave trap 202 for receiving the mixed audio with the camera attitude data and outputting the audio signal after removing the 10KHz carrier;
the 10KHz band-pass filter 204 is used for receiving mixed audio with camera attitude data, taking out carrier signals, and outputting the taken-out carrier signals to the first path of the 10KHz phase discriminator 210 for input after amplitude limiting and amplifying by the 10KHz amplitude limiting amplifier 206;
the 10KHz oscillator 208 is used for generating a 10KHz carrier and outputting the 10KHz carrier to the second input of the 10KHz phase detector 210;
and the core processor 212 is used for acquiring the camera attitude data according to the output jump of the 10KHz phase detector 210 and outputting the camera attitude data.
In this embodiment, the 10KHz carrier used in the transmitting module and the receiving module preferably adopts a sine wave, so that interference of harmonic waves to other devices can be reduced. Meanwhile, the 10KHz oscillator is preferably a 10KHz oscillator with a phase-locked loop.
The 10KHz band-pass filter and the wave trap are adopted, and the filter and the wave trap with narrow bandwidth are selected. This reduces the effect of the 10KHz carrier on the audio channel.
In the receiving module, a port which can be set to be capable of triggering interruption by a rising edge and a falling edge on the core processor is connected with the output of the 10KHz phase detector, so that the phase jump of an input carrier wave can be captured by monitoring the level change of the output port of the 10KHz phase detector.
Example four
Fig. 4 is a schematic structural diagram of a camera attitude data transmission device according to a fourth embodiment of the present invention; as shown in fig. 4, the apparatus further includes a frame sync generator 30 and an attitude data providing module 40, wherein,
and a frame synchronization generator 30, respectively connected to the camera and the transmitting module 10, for separating frame synchronization pulses from the video signal output by the camera and transmitting the frame synchronization pulses to the transmitting module 10.
And the attitude data providing module 40 is connected with the sending module 10 and is used for sending the camera attitude data to the sending module 10.
The embodiment of the utility model provides an in use synchronous pulse as the benchmark, realize the data and the video frame one-to-one of transmission, the more detailed, real-time understanding of display terminal of being convenient for shoots the on-the-spot condition, has made things convenient for the user.
EXAMPLE five
Fig. 5 is a schematic structural diagram of a camera posture data recording device according to a fifth embodiment of the present invention; as shown in fig. 5, the technical principle of the sending module 10 and the receiving module 20 of the present invention can also be applied to the recording of a video recorder, which records the video and audio and simultaneously records the camera attitude data or records other data information, specifically, the recording module corresponds to the sending module 10, the playing module corresponds to the receiving module 20, that is,
the recording module is connected with the playing module and used for reading the camera attitude data and the frame synchronization pulse, serializing the camera attitude data based on the frame synchronization pulse, loading the serialized camera attitude data onto a 10KHz carrier wave in a phase modulation mode, mixing the video and the audio from the camera, and transmitting the mixed audio with the camera attitude data to the playing module through an audio channel;
and the playing module is used for receiving the mixed audio with the camera attitude data, demodulating the camera attitude data after separating the camera attitude data from the audio, and outputting the camera attitude data and the camera audio.
In the recording process of the video recorder, audio and video are recorded simultaneously, the correlation between the video and recorded data is ensured, various interferences in the recording and playing processes can be avoided due to the fact that the data are loaded on a 10KHz carrier wave in a phase modulation mode, the video recorder has strong interference, and posture information and other data of 12 bytes can be recorded at least in one video frame time; the method and the device realize the purpose of recording the attitude data information of the camera by using the common video recorder, and are convenient for displaying the situation of knowing the video shooting in more detail during playing.
EXAMPLE six
Fig. 6 shows a flowchart of a camera attitude data transmission method according to a sixth embodiment of the present invention; as shown in fig. 6, the method includes:
step S601, a sending module reads the attitude data and the frame synchronization pulse of the camera;
step S602, serializing camera attitude data based on frame synchronization pulse, and loading the serialized camera attitude data onto a 10KHz carrier wave in a phase modulation mode; in particular, the method comprises the following steps of,
step S602-1, a 10KHz oscillator generates a 10KHz carrier, one path of the carrier is transmitted to a second input port of the 10KHz alternative electronic switch after passing through the 10KHz inverter, and the other path of the carrier is directly transmitted to a first input port of the 10KHz alternative electronic switch;
step S602-2, the core processor controls the level of the 10KHz alternative electronic switch port;
step S602-3, the 10KHz alternative electronic switch determines the switching direction according to the control of the core processor, and outputs the 10KHz carrier wave with the camera attitude data to a 10KHz band-pass filter; wherein,
the 10KHz alternative electronic switch determines the switching direction and is specifically operated as follows: when the level of the control port of the 10KHz alternative electronic switch is high, the input is switched to the first path, and when the level of the control port of the 10KHz alternative electronic switch is low, the input is switched to the second path.
Step S603, mixing the audio with the video from the video camera, and transmitting the mixed audio with the video camera posture data to a receiving module through an audio channel;
step S604, a receiving module receives the mixed audio with the camera attitude data and separates the camera attitude data from the audio; in particular, the method comprises the following steps of,
step S604-1, the 10KHz wave trap receives the mixed audio with the camera attitude data, and outputs an audio signal after removing a 10KHz carrier;
step S604-2, a 10KHz band-pass filter receives mixed audio with camera attitude data and takes out carrier signals;
and step S604-3, the taken carrier signal is subjected to amplitude limiting and amplification by a 10KHz amplitude limiting amplifier and then is output to a first path of input of the 10KHz phase discriminator.
Step S605 demodulates the camera pose data, and outputs the camera pose data and the camera audio, specifically,
step S605-1, the 10KHz oscillator generates a 10KHz carrier wave and outputs the carrier wave to a second path of input of the 10KHz phase discriminator;
and step S605-2, the core processor acquires the camera attitude data according to the output voltage jump of the 10KHz phase detector and outputs the camera attitude data.
The embodiment of the utility model has the advantages that the camera attitude data is transmitted to the far end by using the common audio channel, and the transmission of an independent data channel is not needed, so that the system structure is simple, and the system cost is reduced; because the utility model adopts the phase modulation mode to load the camera attitude data on the 10KHz carrier, various interferences in the transmission process can be avoided, and the camera attitude data has strong anti-interference performance; because the utility model discloses use synchronous pulse as the benchmark, realize the data and the video frame one-to-one of transmission, the more detailed, real-time condition of shooing of display terminal of being convenient for has made things convenient for the user.
EXAMPLE seven
Fig. 7 shows a work flow diagram of a sending module of a camera attitude data transmission method according to a seventh embodiment of the present invention; as shown in fig. 7, the data sent by the sending module of the present invention includes: preamble, data, check code and stop bit. The specific format is as follows:
the lead code is a 1 millisecond 10KHz positive phase carrier and a 0.5 millisecond 10KHz negative phase carrier;
bits 0 to Bit95 are data, and each Bit of data is composed of a 10KHz positive phase carrier of 0.2 msec or 0.1 msec and a 10KHz negative phase carrier of 0.1 msec. If the value is 1: the normal phase carrier is 0.2 ms and the reverse phase carrier is 0.1 ms. If the value is 0: the normal phase carrier wave is 0.1 millisecond, and the reverse phase carrier wave is 0.1 millisecond;
bits 96 to Bit103 are check codes, and each Bit of data is composed of a 10KHz positive phase carrier of 0.2 ms or 0.1 ms and a 10KHz negative phase carrier of 0.1 ms. If the value is 1: the normal phase carrier is 0.2 ms and the reverse phase carrier is 0.1 ms. If the value is 0: the normal phase carrier is 0.1 ms and the reverse phase carrier is 0.1 ms. The check code value is the lower 8 bits of the sum of the first 12 bytes;
the stop bit is a positive phase carrier of 0.3 milliseconds indicating the end of the attitude data transmission for the frame.
In order to ensure that the data is strictly related to the video pictures, the data must be transmitted within the time of one frame of video. Calculated at 30 frames per second, 12 bytes of data and a direct check data can be transmitted per frame. In addition to transmitting pose data, other data related to the video image may also be transmitted. If the number of bytes to be transferred is less than 12 bytes, the number of bits to be transferred can be reduced accordingly.
The sending module specifically comprises the following steps:
in step S701, is a true synchronization pulse from the camera received? If yes, executing step S702, if not, returning to the beginning, and continuously detecting a port connected with the frame synchronization output of the camera;
step S702, a core processor reads 12 bytes of camera attitude data and serializes the camera attitude data;
step S703, setting the level of the control port of the one-out-of-two electronic switch to high (making the output of the one-out-of-two electronic switch a 10KHz carrier signal without phase inversion) and maintaining for 1 millisecond;
step S704, setting the level of the control port of the alternative electronic switch to be low (making the output of the alternative electronic switch be a phase-inverted 10KHz carrier signal) and maintaining the level for 0.5 milliseconds;
step S705, outputting the serialized camera attitude data to a control port of an alternative electronic switch bit by bit;
step S706, summing the camera attitude data of 12 bytes, serializing the 8-bit data of the sum value and outputting the serialized data bit by bit to a control port of the alternative electronic switch;
step S707, after the posture data is output, setting the level of the control port of the alternative electronic switch to be high and maintaining for 0.3 milliseconds;
step S708, the level of the control port of the alternative electronic switch is set to be low, the transmission of the attitude data and information of one frame is completed, and the core processor waits for the next true synchronization pulse and returns to the beginning.
Example eight
Fig. 8 shows a working flowchart of a receiving module of a camera attitude data transmission method according to the eighth embodiment of the present invention; as shown in fig. 8, the specific steps of the receiving module include:
step S801, is the core processor detecting a 10KHz phase detector output voltage jump? If yes, executing step S802, otherwise, returning to the beginning;
step S802, check timer status counter, timer status counter = 0? If yes, setting a timer status counter =1, setting a byte counter =0, starting timing, returning to the start, and if no, executing step S803;
in step S803, is the timer status counter = 1? If so, inquiring whether the counting of the timer is 1 millisecond (if not, setting a timer state counter =0, setting a byte counter to 0, and returning to the beginning, if so, setting a timer state counter =2, clearing the timer, restarting the timing, and returning to the beginning); if not, executing step S804;
in step S804, is the timer status counter = 2? If so, inquiring whether the counting of the timer is 0.5 millisecond (if not, setting the timer state counter =0, setting the byte counter to 0, and returning to the beginning, if so, setting the timer state counter =3, clearing the timer, restarting the timing, and returning to the beginning); if not, executing step S805;
in step S805, is the timer status counter = 3? If so, receive data bit by bit, will byte counter +1, byte counter = 13? (if yes, setting a timer state counter =4, resetting the timer, restarting timing, returning to the beginning, and if not, returning to the step S804); if not, go to step S806;
in step S806, is the timer status counter = 4? If so, inquiring whether the counting of the timer is 0.3 milliseconds or not (if not, setting a timer state counter =0, setting a byte counter to 0, returning to the beginning, if so, summing the first 12 bytes, comparing the lower 8 bits of the sum with the 13 th byte, if not, setting the timer state counter =0, and the byte counter =0, returning to the beginning, if so, outputting the data through a serial port or other communication interfaces, and setting the timer state counter =0, and the byte counter =0, returning to the beginning); if not, go to step S807;
in step S807, when the data of the timer status counter is not equal to any of 0, 1, 2, 3, and 4, the timer status counter =0, the byte counter is set to 0, and the start is returned.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:
1. because the camera attitude data is transmitted to the far end by using the common audio channel, the camera attitude data does not need to be transmitted by an independent data channel, the system has simple structure, and the system cost is reduced;
2. because the utility model adopts the phase modulation mode to load the camera attitude data on the 10KHz carrier, various interferences in the transmission process can be avoided, and the camera attitude data has strong anti-interference performance;
3. because the utility model discloses use synchronous pulse as the benchmark, realize the data and the video frame one-to-one of transmission, the more detailed, real-time condition of shooing of display terminal of being convenient for has made things convenient for the user.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A camera pose data transmission apparatus, comprising: a sending module and a receiving module, wherein,
the sending module is connected with the receiving module and used for reading camera attitude data and frame synchronization pulses, serializing the camera attitude data based on the frame synchronization pulses, loading the serialized camera attitude data on a 10KHz carrier wave in a phase modulation mode, mixing the camera attitude data with audio from a camera, and transmitting the mixed audio with the camera attitude data to the receiving module through an audio channel;
the receiving module is used for receiving the mixed audio with the camera attitude data, demodulating the camera attitude data after separating the camera attitude data from the audio, and outputting the camera attitude data and the camera audio.
2. The camera pose data transmission apparatus of claim 1, wherein the sending module comprises: a 10KHz oscillator, a 10KHz inverter, a 10KHz alternative electronic switch, a core processor, a 10KHz band-pass filter, a 10KHz wave trap and a mixer,
the 10KHz oscillator is respectively connected with the 10KHz phase inverter and the 10KHz alternative electronic switch and is used for generating a 10KHz carrier, one path of the 10KHz carrier is transmitted to a second input port of the 10KHz alternative electronic switch after passing through the 10KHz phase inverter, and the other path of the 10KHz carrier is directly transmitted to a first input port of the 10KHz alternative electronic switch;
the core processor is connected with the 10KHz alternative electronic switch and used for reading the camera attitude data and the frame synchronization pulse, serializing the camera attitude data based on the frame synchronization pulse and controlling the level of the 10KHz alternative electronic switch port;
the 10KHz alternative electronic switch is used for determining the switching direction according to the control of the core processor and outputting a 10KHz carrier wave with camera attitude data to the 10KHz band-pass filter;
the 10KHz blender, with 10KHz band pass filter with 10KHz trapper links to each other, is used for will passing through 10KHz band pass filter have camera gesture data 10KHz carrier wave with the process the audio signal of the camera that 10KHz trapper was handled mixes the back and exports receiving module.
3. The camera pose data transmission apparatus of claim 1, wherein the receiving module comprises: a 10KHz wave trap, a 10KHz band-pass filter, a 10KHz limiting amplifier, a 10KHz oscillator, a 10KHz phase discriminator and a core processor, wherein,
the 10KHz wave trap is used for receiving the mixed audio with the camera attitude data and outputting an audio signal after filtering a 10KHz carrier;
the 10KHz band-pass filter is used for receiving the mixed audio with the camera attitude data, taking out a carrier signal, and outputting the carrier signal to the first path of the 10KHz phase discriminator for input after the carrier signal is subjected to amplitude limiting and amplification by the 10KHz amplitude limiting amplifier;
the 10KHz oscillator is used for generating a 10KHz carrier wave and outputting the 10KHz carrier wave to a second path of input of the 10KHz phase detector;
and the core processor is used for acquiring the camera attitude data according to the output voltage jump of the 10KHz phase discriminator and outputting the camera attitude data.
4. The camera pose data transmission apparatus of claim 2, wherein said 10KHz alternative electronic switch determines the switching direction specifically operative to: when the level of the control port of the 10KHz alternative electronic switch is high, the input is switched to the first path, and when the level of the control port of the 10KHz alternative electronic switch is low, the input is switched to the second path.
5. The camera pose data transmission device according to claim 1, further comprising a frame synchronization generator respectively connected to the camera and the transmission module for separating the frame synchronization pulse from the video signal output from the camera and transmitting the frame synchronization pulse to the transmission module.
6. The camera pose data transmission apparatus of claim 1, further comprising a pose data providing module coupled to the transmitting module for transmitting camera pose data to the transmitting module.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103685903A (en) * | 2012-09-13 | 2014-03-26 | 北京同步科技有限公司 | Camera attitude data transmission device and camera attitude data transmission method |
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2012
- 2012-09-13 CN CN201220466489.8U patent/CN202818456U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103685903A (en) * | 2012-09-13 | 2014-03-26 | 北京同步科技有限公司 | Camera attitude data transmission device and camera attitude data transmission method |
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