CN209928483U

CN209928483U - Display conversion device

Info

Publication number: CN209928483U
Application number: CN201920456150.1U
Authority: CN
Inventors: 徐国; 陈利光; 文华武
Original assignee: Shanghai Anlogic Information Science & Technology Co Ltd
Current assignee: Shanghai Anlu Information Technology Co.,Ltd.
Priority date: 2019-04-06
Filing date: 2019-04-06
Publication date: 2020-01-10
Anticipated expiration: 2029-04-06

Abstract

The utility model provides a display conversion device, which comprises a voltage stabilizer, a video processing chip, an image key, a field programmable gate array and a circuit board, wherein the field programmable gate array comprises a data processing module and a memory, the data processing module comprises a video receiving module, an image writing buffer area module, an image conversion module, an image reading buffer area module and a display output module, and totally two buffer area modules, the image conversion module writes and reads data into the memory module under the control of the image writing buffer area module and the image reading buffer area module, thus the vertical screen conversion of images can be completed without high-performance FPGA DDR plus SDRAM or AP application processor, under the condition of adopting lower-performance FPGA, the image conversion efficiency is improved, the cost is reduced, the memory is integrated in the field programmable gate array, the wiring of the circuit board is reduced, and the image conversion efficiency is improved.

Description

Display conversion device

Technical Field

The utility model relates to the technical field of, especially, relate to a display conversion equipment.

Background

At present, mobile phones are necessary communication devices in people's lives, communication between the mobile phones is convenient, a display system in the mobile phones has different time sequences when the display system is sent to a display driving chip such as a liquid crystal display, and the display driving chip are different, the traditional display is 1280 multiplied by 720, the mobile phone screen needs to be converted and inverted, 90-degree or 270-degree rotation is realized through a wireless Access Point (AP) application processor and the like, horizontal screen rotation and vertical screen rotation are realized, and the resolution after rotation is 720 multiplied by 7280.

Two processing modes are mostly adopted for realizing the conversion from horizontal screen to vertical screen, one is realized by an AP application processor, and the other is realized by a Field Programmable Gate Array (FPGA) and a Double Data Rate Synchronous Dynamic Random Access Memory (DDR SDRAM). However, the conversion is generally realized by using an AP application processor by converting the edited video in advance through the inherent resolution of the screen, so that the conversion from the horizontal screen to the vertical screen is completed, and the conversion efficiency is low. The method is realized by adopting the FPGA and the DDR SDRAM, generally, the FPGA with better performance and the DDR SDRAM controller need to be selected, and then a conversion program is matched to realize the conversion from a horizontal screen to a vertical screen, so that the cost is relatively higher, and the conversion efficiency of the FPGA with low performance and the DDR SDRAM is too low to meet the requirements in use.

Chinese utility model patent application publication No. CN205140493U discloses a device for controlling a display screen to switch between horizontal and vertical screens, which includes a pre-conversion device for converting image data in a first display mode into original image data in a second display mode in advance; an original image input device for inputting original image data to the conversion device; the detection control equipment is used for determining pixel point information of BMP format original image data, detecting an effective area of the BMP format image data, storing the pixel point information into the memory, and providing a work enabling signal after obtaining a storage position in the memory; and the control output equipment is used for reading the pixel point information of each frame of image data from the memory, converting the read pixel point information and converting the BMP format original image data into target image data in the first display mode. The utility model discloses a patent adopts conversion equipment in advance, carries out the conversion in advance with original image data, and image conversion step is more to it is lower to lead to image conversion efficiency.

Therefore, there is a need to provide a new display conversion device to solve the above problems in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a show conversion equipment adopts high performance FPGA when avoiding horizontal screen commentaries on classics to erect the screen, reduces FPGA memory logic unit and SDRAM memory cell's use, reduce cost.

In order to achieve the above object, the display conversion device of the present invention is used for converting a horizontal screen image into a vertical screen image, and the display conversion device includes a voltage stabilizer, a video processing chip, an image button, a field programmable gate array and a circuit board;

the field programmable gate array comprises a data processing module and a memory, wherein the data processing module comprises a video receiving module, an image writing buffer module, an image transformation module, an image reading buffer module and a display output module, the memory is integrated in the field programmable gate array,

the video receiving module is used for receiving the horizontal screen image data,

the image writing buffer module is used for performing writing buffer processing, temporarily storing a line of data of the horizontal screen image data, and sending writing request information to the image transformation module after the line of the image writing buffer module is full,

the image conversion module is used for reading the line of data in the image writing buffer module after receiving the writing request information so as to perform vertical screen conversion on the line of data to obtain vertical screen image data and storing the vertical screen image data into the storage module,

the image reading buffer module is used for performing reading buffer processing, sending reading request information to the image conversion module, temporarily storing the vertical screen image data, performing format arrangement on the vertical screen image data, and transmitting the vertical screen image data to the display output module,

the image conversion module is used for reading the vertical screen image data in the storage module after receiving the reading request information so as to transmit the vertical screen image data to the image reading buffer module,

the display output module is used for packaging the vertical screen image data so as to transmit the vertical screen image data to a display to realize vertical screen display of the image.

The beneficial effects of the utility model reside in that: the field programmable gate array comprises a data processing module and a memory, wherein the processing module comprises an image writing buffer area module and an image reading buffer area module, and data is cached through the image writing buffer area module and the image reading buffer area module, so that the conversion efficiency is improved.

Preferably, the voltage stabilizer is a low dropout linear voltage stabilizer, and has the advantages that: can output various voltages and meet the operating conditions of different devices.

Preferably, the field programmable gate array includes a video signal receiving port, the video processing chip includes a video signal output port, the video signal receiving port is connected to the video signal output port, and the communication speed between the video signal receiving port and the video signal output port is greater than or equal to 1Gbps, which has the advantages that: the communication speed is high, thereby improving the conversion efficiency of the image.

Preferably, the video processing chip further comprises a universal serial bus interface and a high-definition multimedia interface, and has the advantages that: the multiple interfaces facilitate the connection of different video sources.

Preferably, the memory is a dynamic random access memory, and the memory size of the dynamic random access memory is 64Mb, which has the advantages that: the method can greatly meet the requirement of data storage when the image is horizontally and vertically rotated, improves the storage and reading efficiency, has high memory utilization rate, does not cause the waste of overlarge memory, and has lower cost.

Preferably, the display output module is a mobile industry processor display output module, and the mobile industry processor display output module includes a mobile industry processor interface, and the mobile industry processor interface is used for being connected with a display.

Preferably, the image transformation module is used for connecting with a universal asynchronous receiver/transmitter, and has the advantages that: the adjustment of the resolution is facilitated.

Drawings

Fig. 1 is a block diagram of a display conversion apparatus according to the present invention;

fig. 2 is a block diagram of the field programmable gate array of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and similar words are intended to mean that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.

To solve the problems in the prior art, an embodiment of the present invention provides a display conversion device for converting a horizontal screen image into a vertical screen image, referring to fig. 1 and 2, the display conversion device includes a voltage stabilizer 10, a video processing chip 20, an image button 30, a field programmable gate array 40, and a circuit board 50;

the field programmable gate array 40 comprises a data processing module 401 and a memory 402, wherein the data processing module 401 comprises a video receiving module 4011, an image writing buffer module 4012, an image transformation module 4013, an image reading buffer module 4014 and a display output module 4015, the memory 402 is integrated inside the field programmable gate array 40,

the video receiving module 4011 is configured to receive landscape image data,

the image writing buffer module 4012 is configured to perform writing buffer processing, temporarily store a line of data of the landscape image data, and send writing request information to the image transformation module 4013 after the line of the image writing buffer module 4012 is full,

the image transformation module 4013 is configured to, after receiving the write request information, read the line of data in the image write buffer module 4012, perform vertical screen conversion on the line of data to obtain vertical screen image data, store the vertical screen image data in the storage module 402,

the image reading buffer module 4014 is configured to perform reading buffer processing, send reading request information to the image conversion module 4013, temporarily store the vertical screen image data, perform format arrangement on the vertical screen image data, and transmit the vertical screen image data to the display output module 4015,

the image transformation module 4013 is configured to, after receiving the read request information, retrieve the vertical screen image data in the storage module to transmit the vertical screen image data to the image read buffer module 4014,

the display output module 4015 is configured to pack the vertical screen image data, so as to transmit the vertical screen image data to a display, thereby implementing vertical screen display of an image.

In some embodiments of the invention, the circuit board is a Printed Circuit Board (PCB).

In some embodiments of the present invention, the resolution of the horizontal screen image data is 1280 × 800, and the horizontal screen image data has 800 lines.

In some embodiments of the present invention, the portrait image data is arranged in the format of 32 bits.

In some embodiments of the present invention, the portrait screen image data is 24-bit RGB data.

The utility model discloses an in some embodiments, image button 30 with video processing chip 20 connects, image button 30 includes last key, lower key, left key, right key and brightness control knob, go up the key the lower key left key with the right key is used for the selection of image display content, brightness control knob is used for adjusting image display's luminance.

The utility model discloses an in some embodiments, video receiving module 4011's receiving terminal with the video signal receiving port is connected, video receiving module 4011's output with the receiving terminal that buffer area module 4012 was write to the image is connected, the output that buffer area module 4012 was write to the image with image transformation module 4013's receiving terminal is connected, image transformation module 4013's output with the receiving terminal that buffer area module 4014 was read out to the image is connected, the output that buffer area module 4014 was read out to the image with display output module 4015's receiving terminal is connected, display output module 4015's control end respectively with image transformation module 4013's control end with the control end that buffer area module 4014 was read out to the image is connected.

In some embodiments of the present invention, the voltage regulator 10 is a Low dropout regulator (LDO).

In some embodiments of the present invention, the input voltage of the low dropout linear regulator is 5V.

In some embodiments of the present invention, the field programmable gate array 40 includes a video signal receiving port, the video processing chip 20 includes a video signal output port, the video signal receiving port with the video signal output port is connected, the video signal receiving port with the communication speed of the video signal output port is 1 Gbps.

In some embodiments of the present invention, the communication speed between the video signal receiving port and the video signal output port is 1 Gbps.

In some embodiments of the present invention, the video signal receiving port and the video signal output port are multi-channel Low Voltage Differential Signaling (LVDS) interfaces.

In some embodiments of the present invention, the video processing chip 20 further includes a Universal Serial Bus interface (USB) and a High Definition Multimedia Interface (HDMI).

In some embodiments of the present invention, the Memory 402 is a Dynamic Random Access Memory (DRAM), and the Memory size of the DRAM is 64 Mb.

In some embodiments of the invention, the dram has a memory size of 64 Mb.

The utility model discloses an in some embodiments, show output module 4015 and show output module for Mobile industry treater, Mobile industry treater shows output module and includes Mobile industry treater Interface (Mobile industry processor Interface, MIPI), Mobile industry treater Interface is used for being connected with the display.

In some embodiments of the present invention, the image transformation module 4013 is used to connect with Universal Asynchronous Receiver Transmitter (UART), the Universal Asynchronous Receiver Transmitter is through making the image transformation module 4013 follows the memory 402 reads the data of different addresses, thereby realizing the conversion of resolution and the mirror image display of the image.

Although the embodiments of the present invention have been described in detail hereinabove, it is apparent to those skilled in the art that various modifications and variations can be made to these embodiments. However, it is to be understood that such modifications and variations are within the scope and spirit of the present invention as set forth in the appended claims. Moreover, the invention as described herein is capable of other embodiments and of being practiced or of being carried out in various ways.

Claims

1. A display conversion device is characterized in that the display conversion device is used for converting a horizontal screen image into a vertical screen image and comprises a voltage stabilizer, a video processing chip, an image button, a field programmable gate array and a circuit board;

the field programmable gate array comprises a data processing module and a memory, wherein the data processing module comprises a video receiving module, an image writing buffer module, an image transformation module, an image reading buffer module and a display output module, and the memory is integrated in the field programmable gate array.

2. The display conversion apparatus according to claim 1, wherein the voltage regulator is a low dropout linear regulator.

3. The display conversion apparatus according to claim 1, wherein the field programmable gate array includes a video signal receiving port, the video processing chip includes a video signal output port, the video signal receiving port is connected to the video signal output port, and a communication speed between the video signal receiving port and the video signal output port is greater than or equal to 1 Gbps.

4. The display conversion device of claim 1, wherein the video processing chip further comprises a universal serial bus interface and a high-definition multimedia interface.

5. The display conversion apparatus according to claim 1, wherein the memory is a dynamic random access memory having a memory size of 64 Mb.

6. The display conversion apparatus according to claim 1, wherein the display output module is a mobile industry processor display output module, and the mobile industry processor display output module comprises a mobile industry processor interface for connecting with a display.

7. The display conversion apparatus according to claim 1, wherein the image conversion module is configured to connect to a universal asynchronous receiver/transmitter.