CN202121715U - 3D playback system, 3D display device and 3D glasses - Google Patents

Abstract

3D play system, 3D display device and 3D glasses, 3D play system include 3D display device end and 3D glasses, and 3D display device end includes: the main chip of the display equipment end is used for setting FM frequency, encoding the 3D frame synchronization signal into RDS data and sending out the RDS data according to the FM frequency; the 3D glasses include: and the 3D glasses main chip is used for receiving the FM frequency and the ID, receiving and analyzing RDS data according to the received FM frequency and performing prediction synchronization. According to the utility model discloses the scheme, 3D synchronizing signal carries out the shutter through RDS and synchronizes, need not infrared multiple spot transmission, does not receive visual barrier and light noise's influence, can effectively avoid visual barrier to disturb and light noise interference's step out.

Description

3D playback system, 3D display device and 3D glasses

technical field

The utility model relates to the technical field of 3D display, in particular to a 3D playback system, a 3D display device and 3D glasses.

Background technique

With the advancement of science and technology, 3D display technology has been widely developed. When viewing 3D images, shutter-type 3D glasses are usually used for viewing. Shutter-type 3D glasses are a new type of video glasses, which belong to a kind of head-mounted virtual display, also known as glasses-type display and portable theater. Its basic principle is mainly based on the refresh time of the human eye to the image frequency, and by increasing the fast refresh rate of the picture (at least 120Hz) to achieve 3D effects, which belongs to active 3D technology. When the 3D signal is input to the display device (such as a monitor, projector, TV, etc.), the 120Hz image will be generated alternately in the frame sequence format to achieve the left and right frames, and these frame signals will be transmitted through the infrared transmitter, responsible for receiving the 3D The glasses are refreshed synchronously so that the left and right eyes can watch the corresponding images, and maintain the same number of frames as the 2D video. The audience's two eyes see different images that switch quickly, and create an illusion in the brain (the camera cannot shoot the effect), You can watch stereoscopic images.

Applying this 3D technology in the prior art, when realizing the synchronization between display devices such as televisions and 3D glasses, infrared communication is used to achieve synchronization. However, the infrared communication must be linearly visible. If the infrared If there is an obstruction between the emitter and the wearer of the glasses, or the position of the receiver is beyond the range of the infrared emitter, the 3D glasses will not work properly. Moreover, infrared communication is extremely vulnerable to LCD backlight, noise from the plasma screen, fluorescent lights, and the environment. Optical noise and interference from visible obstacles may cause noise out of sync.

Utility model content

In view of the above-mentioned shortcomings in the prior art, the purpose of this utility model is to provide a 3D playback system, a 3D display device, and a 3D glasses, which can effectively avoid out-of-step interference from visual obstacles and light noise , without infrared multi-point emission.

In order to achieve the above object, the utility model adopts the following technical solutions:

A 3D playback system, including a 3D display device end and 3D glasses, wherein the 3D display device end includes: setting the FM frequency of the display device, encoding the 3D frame synchronization signal into RDS data according to a custom synchronization protocol, and converting the The main chip of the display device that the RDS data sends out according to the FM frequency, and the 3D glasses include: setting the 3D glasses to receive the FM frequency and ID, receiving and analyzing the RDS data according to the received FM frequency, and performing prediction synchronization 3D Glasses main chip.

A 3D display device, comprising: a main chip at the display device end that sets the FM frequency of the display device, encodes the 3D frame synchronization signal into RDS data according to a self-defined synchronization protocol, and sends the RDS data according to the FM frequency.

A 3D glasses, comprising: a 3D glasses main chip that sets the FM frequency and ID received by the 3D glasses, receives and analyzes the RDS data according to the received FM frequency, and performs prediction synchronization.

According to the above-mentioned scheme of the utility model, when realizing 3D viewing, the 3D display device encodes the 3D synchronous signal according to a self-defined synchronous protocol, encodes it into RDS data, and sends it out according to the set FM frequency. For 3D TV , is to receive the RDS data sent by the 3D display device according to the set receiving FM frequency, analyze it, and perform prediction synchronization. In this way, the 3D synchronization signal is transmitted through the subcarrier (RDS, System) for shutter synchronization, not affected by visible obstacles and light noise, can effectively avoid out-of-synchronization caused by visual obstacle interference and light noise interference, without infrared multi-point emission.

Description of drawings

Fig. 1 is a structural schematic diagram of Embodiment 1 of the 3D playback system of the present invention;

Fig. 2 is a schematic structural diagram of Embodiment 2 of the 3D playback system of the present invention;

Fig. 3 is an example figure of the school time synchronization of the application of the utility model scheme;

Fig. 4 is an example diagram of a self-defined synchronization protocol applied in the scheme of the present invention.

Detailed ways

The utility model solution is described in detail below with one of the preferred embodiments.

Referring to Fig. 1, it is a structural schematic diagram of Embodiment 1 of the 3D playback system of the present invention, which includes a 3D display device end and 3D glasses, wherein the 3D display device end includes: setting the FM frequency of the display device, setting the 3D The frame synchronization signal is coded into RDS data according to the custom synchronization protocol, and the above RDS data is sent according to the above FM frequency to the main chip of the display device. The 3D glasses include: setting the 3D glasses to receive FM frequency and ID, and receiving according to the above received FM frequency The main chip of the 3D glasses that analyzes the above RDS data and performs prediction synchronization.

Accordingly, in a specific working process, taking the display device as an example of a TV, when the TV is turned on, according to the free frequency band of the user's local FM frequency, the main frequency of FM transmission is selected and set, that is, the 3D display device The terminal can set the FM frequency of the machine according to the user's instructions, and then use the burst (non-burst transmission, non-cyclic continuous transmission) method to encode and send out in real time. When encoding and sending, the 3D frame synchronization signal is encoded into RDS data according to the custom synchronization protocol, and then sent out. Since the RDS protocol is based on group=4blocks, which are A, B, C, and D respectively, where A contains station identification information, and B, C, and D are data, therefore, when encoding the 3D frame synchronization signal into RDS data, Can be coded as B, C, D data.

For 3D glasses, it sets the receiving frequency and ID of the 3D glasses itself. After receiving the RDS data, GP102 outputs a low-level interrupt, analyzes the RDS data, and obtains the device ID and shutter frequency. If the three times are the same, it will enter the synchronization state. Calibrate the local shutter timing, predict the start time of the next frame, delay to the next frame, and start the shutter work. Calibrate the local shutter timing every time the GP102 output low level interrupt is received. If the GP102RDS interrupt is not received within a preset period of time, it will enter the out-of-sync state and re-synchronize, otherwise it will be a false out-of-sync. The preset time period here can be set according to actual needs, for example, it can be set to 2 seconds.

According to the above-mentioned 3D playback system of the present invention, when realizing 3D viewing, the 3D display device encodes the 3D synchronization signal according to a self-defined synchronization protocol, encodes it into RDS data, and sends it out according to the set FM frequency. 3D TV receives the RDS data sent by the 3D display device according to the set receiving FM frequency, analyzes it, and performs prediction synchronization. In this way, the 3D synchronization signal is transmitted through the subcarrier (RDS, Radio Data System) for shutter synchronization, not affected by visual obstacles and light noise, within the coverage of wireless FM, RDS data can be received, which can effectively avoid the out-of-sync interference of visible obstacles and light noise interference, No need for infrared multi-point emission.

Referring to Figure 2, it is a schematic structural diagram of Embodiment 2 of the 3D playback system of the present invention. In this embodiment, the main difference with respect to Embodiment 1 above is that the main chip on the display device side in this embodiment , The main chip of 3D glasses has been further limited.

As shown in Figure 2, the display device main chip specifically includes: a first frequency setting unit for setting the FM frequency of the display device, connected to the first frequency setting unit, and converting the 3D frame synchronization signal according to a custom synchronization protocol An encoder for encoding RDS data is connected to the encoder, and a wireless transmission unit that transmits the RDS data in accordance with the FM frequency.

The above-mentioned 3D glasses main chip specifically includes: a second frequency setting unit for setting the 3D glasses to receive FM frequency and ID, connected to the above-mentioned second frequency setting unit, and a wireless receiving unit for receiving the above-mentioned RDS data according to the above-mentioned receiving FM frequency, A decoder connected to the wireless receiving unit to analyze the RDS data, and a synchronization unit connected to the decoder to perform predictive synchronization.

Further, the main chip at the display device side may further include: a buffer connected between the encoder and the wireless sending unit for buffering the above-mentioned RDS data. Thus, the encoded RDS data can be buffered and then sent out.

Further, the main chip at the display device side may further include: a sound setting unit connected to the encoder and setting whether to output sound according to the first infrared remote control signal. The main chip of the 3D glasses may further include: an audio playback unit connected to the decoder and the synchronization unit for audio output. Therefore, in the case of setting the audio output, the stereo sound is simultaneously encoded and sent to the 3D glasses in a wireless manner, and the 3D glasses output the received stereo sound as audio. Therefore, the stereo audio output is directly sent to the user's 3D glasses for playback, instead of the existing audio output by the display device, so that the user can enjoy it alone without disturbing others.

In addition, the above-mentioned display device main chip may be realized by using Si4713 chip, and the above-mentioned 3D glasses main chip may be realized by using Si4703 chip.

As mentioned above, the above-mentioned 3D playback system of the present invention uses the sub-carrier RDS for shutter synchronization and transmits stereo audio at the same time. The frequency of the sub-carrier RDS here can be set according to actual needs, for example, it can be set to FM57kHz.

In addition, as we all know, there will be a certain fixed delay in wireless digital communication from encoding, modulation and transmission, to receiving demodulation and decoding, which can be measured through experiments (Δtime). When the time is set, the strategy of first adjusting the time and then synchronizing can be adopted, and the shutter works at the beginning of the next frame. Figure 3 shows an example diagram of the time adjusting and synchronizing.

For the custom RDS protocol, Figure 4 shows an example diagram of the custom synchronization protocol. As shown in Figure 4, a block includes 16-bit custom synchronization protocol data and 10-bit checksum data, where , Custom synchronization protocol = synchronization command (4bit) + shutter frequency (4bit) + device ID (8bit). According to the RDS protocol, combined with the RDS data structure: Group (104bit) = 4*blocks (26bits), the display device and the glasses are timed every 88ms.

The specific implementation manners of the above-mentioned encoder, decoder, etc. may be the same as those in the prior art, and will not be repeated here.

The above-mentioned 3D playback system of the present invention may be a 3D TV playback system, and at this time, the above-mentioned 3D display device may be a 3D TV.

According to the above-mentioned 3D playback system of the utility model, the utility model also provides a 3D display device and a kind of 3D glasses. repeat.

The embodiments of the utility model described above are only detailed descriptions of the preferred embodiments of the utility model, and do not constitute a limitation to the protection scope of the utility model. Any modifications, equivalent replacements and improvements made within the spirit and principle of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (12)

1. 3D Play System; Comprise 3D display device end and 3D glasses; It is characterized in that; Said 3D display device end comprises: the FM frequency of display device is set, with the display device end master chip that the 3D frame synchronizing signal is encoded to the RDS data and said RDS data are sent according to said FM frequency according to self-defined synchronous protocol, said 3D glasses comprise: be provided with the 3D glasses receive FM frequency and ID, according to said reception FM frequency reception and resolve said RDS data, predict synchronous 3D glasses master chip.

2. 3D Play System according to claim 1 is characterized in that:

Said display device end master chip specifically comprises: the first frequency setup unit that the FM frequency of display device is set; Be connected with said first frequency setup unit, the 3D frame synchronizing signal is encoded to the encoder of RDS data according to self-defined synchronous protocol, the wireless transmission unit that is connected with said encoder, said RDS data are sent according to said FM frequency;

Perhaps

Said 3D glasses master chip specifically comprises: the second frequency setup unit that the 3D glasses receive FM frequency and ID is set; Be connected, receive the radio receiving unit of said RDS data according to said reception FM frequency with said second frequency setup unit; Be connected, resolve the decoder of said RDS data with said radio receiving unit, be connected, predict synchronous lock unit with said decoder.

3. 3D Play System according to claim 2 is characterized in that:

Said display device end master chip also comprises: the buffer of the said RDS data of buffer memory and/or the sound accompaniment that whether sound accompaniment output is set are provided with the unit; Said buffer is connected between said encoder and the said wireless transmission unit, and said sound accompaniment is provided with the unit and is connected with said encoder;

And/or

Said 3D glasses master chip also comprises: the audio playing unit that is connected, carries out audio frequency output with said decoder and said lock unit.

4. according to any described 3D Play System of claim 1 to 3, it is characterized in that:

Said 3D display device end is the 3D TV;

And/or

Said display device end master chip is the Si4713 chip;

And/or

Said 3D glasses master chip is the Si4703 chip.

5. a 3D display device is characterized in that, comprising: the display device end master chip that the FM frequency of display device is set, the 3D frame synchronizing signal is encoded to the RDS data and said RDS data are sent according to said FM frequency according to self-defined synchronous protocol.

6. 3D display device according to claim 5 is characterized in that, said display device end master chip specifically comprises:

The first frequency setup unit of the FM frequency of display device is set; Be connected with said first frequency setup unit, the 3D frame synchronizing signal is encoded to the encoder of RDS data according to self-defined synchronous protocol, the wireless transmission unit that is connected with said encoder, said RDS data are sent according to said FM frequency.

7. 3D display device according to claim 6 is characterized in that, said display device end master chip also comprises:

Be connected between said encoder and the said wireless transmission unit, the buffer of the said RDS data of buffer memory;

And/or

Be connected, be provided with the sound accompaniment whether sound accompaniment is exported with said encoder the unit is set.

8. according to any described 3D display device of claim 5 to 7, it is characterized in that:

Said 3D display device is the 3D TV;

And/or

Said display device end master chip is the Si4713 chip.

9. 3D glasses is characterized in that, comprising: be provided with the 3D glasses receive FM frequency and ID, according to said reception FM frequency reception and resolve said RDS data, predict synchronous 3D glasses master chip.

10. 3D glasses according to claim 9; It is characterized in that; Said 3D glasses master chip specifically comprises: the second frequency setup unit that the 3D glasses receive FM frequency and ID is set; Be connected with said second frequency setup unit, receive the radio receiving unit of said RDS data, be connected, resolve the decoder of said RDS data, be connected, predict synchronous lock unit with said decoder with said radio receiving unit according to said reception FM frequency.

11. 3D glasses according to claim 10 is characterized in that, said 3D glasses master chip also comprises: the audio playing unit that is connected, carries out audio frequency output with said decoder and said lock unit.

12., it is characterized in that said 3D glasses master chip is the Si4703 chip according to any described 3D glasses of claim 9 to 11.

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