CN204168404U - A kind of processing unit of ultra high-definition signal and full HD TV - Google Patents

Abstract

An ultra-high-definition signal processing device and a full-high-definition television, including: A/D front-ends, video decoders, and video encoders connected in sequence, the input end of the A/D front-end is used to receive 4K TV signals, and its video output end will The separated video signal is transmitted to the video decoder, and the video decoder is used to convert the received video signal into corresponding image data, and its output terminal transmits the converted image data to the video encoder, and the video encoder will receive The image data is converted into the LVDS signal supported by the screen component, and a pixel processor for adjusting the image resolution output by the video decoder is connected in series between the video decoder and the video encoder. By setting a pixel processor between the video decoder and video encoder, the problem that low-resolution screens cannot play high-resolution signals is solved, and by setting an image recognizer and an image quality processor in the device, each scene is realized Real-time targeted optimization processing improves the quality of the output image.

Description

An ultra-high-definition signal processing device and a full-high-definition television

technical field

The utility model relates to the technical field of video processing, in particular to an ultra-high-definition signal processing device.

Background technique

4K signal is an ultra-high-definition signal with 4K resolution (3840×2160). Currently, the TVs on the market that support playing 4K signals are all 4K TVs with 4K screens. 4K TVs support normal definition signals (resolution 1024×768), full High-definition signals (resolution 1920×1080), and 4K signals, that is, 4K TVs support signals of the same level and lower-level signals. 4K TVs are expensive, and most users generally still use PHD TVs or Full HD TVs, but for PHD TVs or Full HD TVs, the screen requirements cannot reach 4K resolution, so they cannot support playing 4K signals; In addition, existing TV devices can only adjust the brightness and chromaticity of the display screen through the user's selection. The picture quality is not good.

Utility model content

One of the purposes of the present utility model is to provide a processing device for 4K television signals to solve the problem that the processing device in the prior art cannot optimize the processing of media stream data.

In some demonstrative embodiments, the processing device for the 4K TV signal includes: an A/D front-end, a video decoder, and a video encoder connected in sequence, and the input end of the A/D front-end is used to receive the 4K TV signal , its video output terminal transmits the separated video signal to the video decoder, and the video decoder is used to convert the received video signal into corresponding image data, and its output terminal transmits the converted image data to the described A video encoder, the video encoder converts the received image data into an LVDS signal supported by the screen component, and the video decoder is connected in series between the video encoder and the video encoder for adjusting the The pixel processor at the resolution of the output image.

In some demonstrative embodiments, it further includes: an image quality processor serially connected between the pixel processor and the video encoder for optimizing the image data adjusted by the pixel processor; The image recognizer connected to the video decoder and the image quality processor is used to identify the scene to which the image data output by the video decoder belongs, and transmit the signal encapsulated with the recognized scene to the image quality processor, The image quality processor is triggered to call the corresponding optimization strategy stored in the memory to optimize the image data output by the pixel processor.

Another object of the present invention is to provide a full high definition television.

In some demonstrative embodiments, the full high-definition television includes the above-mentioned ultra-high-definition signal processing device.

The illustrative embodiments of the present invention include the following advantages over the prior art:

By setting a pixel processor between the video decoder and video encoder, the problem that low-resolution screens cannot play high-resolution signals is solved, and by setting an image recognizer and an image quality processor in the device, each scene is realized The real-time targeted optimization processing solves the problem that the processing device in the prior art cannot optimize the media stream data, and improves the quality of the output picture.

Description of drawings

The drawings described here are used to provide a further understanding of the utility model and constitute a part of the application. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 is a prior art device block diagram according to an illustrative embodiment of the present invention;

Figure 2 is a block diagram of a processing device according to an illustrative embodiment of the invention;

3 is a block diagram of a processing device according to an illustrative embodiment of the invention;

4 is a block diagram of a processing device in accordance with an illustrative embodiment of the invention.

Detailed ways

In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.

As shown in Figure 1, at present, the signal processing device of the TV in the prior art is generally made up of A/D front end 1, video decoder 2, video encoder 3, audio decoder 4 and audio encoder 5; A/D The input end of D front end 1 is used for receiving TV signal, and its video output end is electrically connected with the input end of video decoder 2, and its audio frequency output end is electrically connected with the input end of audio frequency decoder 4; The input end of the video encoder 3 is electrically connected; the output end of the audio decoder 4 is electrically connected to the input end of the audio encoder 5; the output end of the video encoder 3 is used to connect with the screen; the output end of the audio decoder 5 is connected to the audio connect.

The A/D front end 1 is used to separate the video signal and audio signal from the received TV signal, and output it to the video decoder 2 or audio decoder 4 through its corresponding video/audio signal; due to the separated video signal and audio The signal format is different in the process of signal transmission and playback, so it is necessary to convert the video signal to the playback signal of the screen used by the current TV through the video decoder 2 and the video encoder 3, and pass the audio signal through the audio decoder 4 and audio encoder 5 to convert the playback signal of the current audio equipment.

Wherein, the video decoder 2 first converts the separated video signal into corresponding image data, and transmits the image data to the video encoder 3, and the video encoder 3 converts the image data into an LVDS signal (Low Voltage Differential Signal) supported by the screen. Signaling, low voltage differential signal technology interface). Similarly, the audio decoder 4 converts the separated audio signals into corresponding audio data, and then converts them into audio-supported signals through the audio encoder 5 .

According to the above structure, if a 4K signal enters the A/D front end, after a series of subsequent conversions, the signal output by the video encoder 3 is still a 4K signal, and its resolution has not changed, so it cannot be output to a non-4K screen. .

Referring now to FIG. 2 , FIG. 2 shows a schematic structural diagram of an ultra-high-definition signal processing device.

As shown in Fig. 2, discloses a kind of ultra-high-definition signal processing device, comprises: A/D front-end 1, video decoder 2, video encoder 3 connected in sequence, the input end of described A/D front-end 1 is used for Receive 4K TV signal, its video output terminal transmits the separated video signal to the video decoder 2, and the video decoder 2 is used to convert the received video signal into corresponding image data, and its output terminal will convert The image data is transmitted to the video encoder 3, and the video encoder 3 converts the received image data into an LVDS signal supported by the screen component, between the video decoder 2 and the video encoder 3 A pixel processor 6 for adjusting the resolution of the image output by the video decoder 2 is connected in series.

Wherein, the pixel processor 6 can be realized by adopting the existing image processing technology, that is, to delete the pixels of the image data with a resolution of 3840×2160 every row and every column, so as to obtain the image data of 1920×1080. Those skilled in the art should understand that other algorithms can also be used to compress the image, so as to obtain image data of 1920×1080 and image data of 1024×768.

The above embodiment solves the problem that a low-resolution screen cannot play a high-resolution signal by disposing a pixel processor in an ultra-high-definition signal processing device. In addition, those skilled in the art should understand that the processing device is used to convert high-resolution signals into low-resolution signals, not only to process ultra-high-definition 4K signals, but also to process ultra-high-definition 8K signals.

However, for the above-mentioned resolution processing method, the image quality of the output image is often damaged, and the image quality needs to be optimized.

Aiming at the problem of poor image quality caused by the embodiment shown in Figure 2, a device structure is proposed to solve the problem;

As shown in Figure 3, the processing device is also provided with: a device connected in series between the pixel processor 6 and the video encoder 3 for optimizing the image quality of the image data adjusted by the pixel processor 6 Processor 7; the image recognizer 9 that is respectively connected with described video decoder 2 and described image quality processor 7, is used for identifying the scene that the image data that video decoder outputs belongs to, and will be packaged with the identified scene The signal is transmitted to the image quality processor, triggering the image quality processor to call the corresponding optimization strategy stored in the memory 10 to optimize the image data output by the pixel processor 6 .

By setting an image recognizer and an image quality processor in the device, real-time and targeted optimization processing for each scene can be realized, and the quality of the output picture can be improved.

In some illustrative embodiments, the image quality processor includes at least a white balance unit, a color unit, a brightness unit, a saturation unit, a contrast unit and a noise reduction unit.

The image quality processor obtains the corresponding optimization strategy from the memory, and optimizes the image data through the optimization unit; for example, the recognized scene is a human scene, and the optimization strategy includes: increasing the brightness of the part of the human face outline by 30 %, the color is increased by 15%, and the contrast between adjacent pixels is reduced by 10%. At this time, the image quality processor implements the above optimization strategy through the brightness unit, color unit, contrast unit and denoising unit. Those skilled in the art should be able to understand that the above-mentioned functional operations performed by the image quality processor are routine operations of current chips. Function and operation process are not what this scheme will protect. The main idea of this scheme is to propose a processing device structure to solve the above problems.

In some illustrative embodiments, the pixel processor may be an AT2250 image processing chip, or other image processing chips.

In some illustrative embodiments, the image recognizer can be selected from the Visconti 3 image recognition dual-core chip based on Cortex A9 released by Toshiba, and the memory card can be selected from a memory card above 2G.

In some demonstrative embodiments, the image quality processor may be a TA1316AN type progressive scan double field frequency enhanced image quality processing chip.

In some illustrative embodiments, the video decoder can be selected from the SAA7113 chip, the video encoder can be selected from the SAA7121, and can also be selected from the MPEG2 video encoder.

In some illustrative embodiments, the audio decoder can be a Dual DSP chip, and the audio encoder can be a VS1003B chip.

In some demonstrative embodiments, the processing device further includes: an audio decoder 4 that receives the audio signal separated by the A/D front-end 1, and converts the audio data converted by the audio decoder 4 into a playback component Audio encoder 5 for supported audio signals.

As shown in Figure 4, in some illustrative embodiments, the processing device further includes: a data network interface 8 connected to the input end of the A/D front end, such as a USB data interface, for transmitting 4K by other means signal and other signals.

In some demonstrative embodiments, the screen assembly is a Full High Definition (FHD) screen.

In some demonstrative embodiments, a full high-definition television is disclosed, having the above-mentioned ultra-high-definition processing device.

The description of the above embodiment is only used to help understand the method of the present utility model and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and application scope In summary, the contents of this specification should not be construed as limiting the utility model.

Claims (7)

1. A processing device for ultra-high-definition signals, A/D front-end, video decoder, and video encoder connected in sequence, the input end of the A/D front-end is used to receive 4K TV signals, and its video output end will separate The video signal is transmitted to the video decoder, and the video decoder is used to convert the received video signal into corresponding image data, and its output terminal transmits the converted image data to the video encoder, and the video encoder The device converts the received image data into an LVDS signal supported by the screen component, and is characterized in that a device for adjusting the image output by the video decoder is connected in series between the video decoder and the video encoder resolution pixel processor. 2. The processing device according to claim 1, further comprising: a device connected in series between the pixel processor and the video encoder for optimizing the image data adjusted by the pixel processor Image quality processor; An image recognizer connected to the video decoder and the image quality processor respectively, is used to identify the scene to which the image data output by the video decoder belongs, and transmits a signal encapsulated with the recognized scene to the image quality A processor, triggering the image quality processor to call a corresponding optimization strategy stored in the memory to optimize the image data output by the pixel processor. 3. The processing device according to claim 2, wherein the image quality processor includes at least a white balance unit, a color unit, a brightness unit, a saturation unit and a noise reduction unit. 4. The processing device according to claim 1, further comprising: an audio decoder that receives the audio signal separated by the A/D front end, and converts the audio data converted by the audio decoder into a playback The audio encoder for the audio signal supported by the component. 5. The processing device according to claim 1, further comprising: a data network interface connected to the input end of the A/D front end. 6. The processing device according to claim 1, wherein the screen component is a full high-definition (FHD) screen. 7. A full high-definition television, characterized in that it has the processing device according to any one of claims 1-6.