CN103984511A

CN103984511A - Method for block transfer of screen during remote control

Info

Publication number: CN103984511A
Application number: CN201310048881.XA
Authority: CN
Inventors: 杜春辉
Original assignee: Zhenjiang Is World Information Service Co Ltd
Current assignee: Zhenjiang Is World Information Service Co Ltd
Priority date: 2013-02-07
Filing date: 2013-02-07
Publication date: 2014-08-13

Abstract

The invention discloses a method for the block transfer of a screen during remote control. The method is characterized in that a computer screen is divided into a plurality of small blocks during the real-time screen transfer and broadcast from a PC (personal computer) to a mobile phone (or a computer), and in most cases, a part of the screen rather than the whole screen is changed to cause changes in a picture of the computer screen, so that only the changed blocks are required to be transferred during the transfer or broadcast of the picture of the screen.

Description

A kind of method of screen partition piece transmission in Long-distance Control

Technical field

The present invention relates to the remote control technology field to PC computer, the transmission of PC computer screen or broadcast world.

Background technology

Smart mobile phone has been obtained the development of advancing by leaps and bounds in these several years, this growth momentum is also in continuity, and people enjoy the while easily of mobile phone, also can put any more the powerful of PC computer, how this is combined, based on mobile phone, control that the software of computer is just exhaled and go out.

The software of tradition Long-distance Control or screen broadcasting, as shown in Figure 2, its engineering process and principle are roughly as follows:

1. a service software is installed on monitored computer, and this software is responsible for the screen of the machine to pass in real time receiving end.

2. on the computer of receiving end, install one and receive software, this software is responsible for receiving the computer screen picture being sent by controlled terminal, and shows.

3. the computer screen due to controlled terminal is real-time change, and the process of above-mentioned transmission and acceptance obtains in real time and repeats.

4. traditional screen transmission technology has two kinds, and the first is regularly transmitted new screen-picture, no matter whether screen-picture is identical with previous frame; It two is the whether the same of the more current screen-picture of timing ratio and previous frame, different just transmission.

In the above-mentioned course of work, the up-to-date screen-picture of controlled terminal computer has passed to receiving end in real time, and receiving terminal has just demonstrated the screen change of controlled terminal in real time, thereby has reached the object of real-time monitoring.

The above-mentioned course of work and principle, not only comprised man-to-man remote control field but also comprised the screen broadcasting field of one-to-many.

The above-mentioned course of work, comes with some shortcomings:

1. the variation of screen-picture, is not often full frame variation, in the time of more, is a part for screen, and variation has occurred in a region.

2. full-screen picture transmission, its data volume is larger, and the transmission one to one in LAN (Local Area Network) can go on, but relates to the transmission of wide area network or the transmission of one-to-many, and its offered load pressure is just difficult to bear.

Summary of the invention

The present invention is a kind of method to the transmission of screen partition piece, as shown in Figure 1.

In to the remote control process of PC computer, relate to one computer screen is constantly transferred to the process on mobile phone or other equipment, only have constantly and picture up-to-date on computer is transferred on mobile phone or other equipment, on mobile phone or other equipment, could see in real time dynamic computation picture.

The present invention be not by directly by the picture real-time Transmission of PC computer to mobile phone or other equipment, but the picture of memory previous frame screen, when the picture of screen sends variation, mitogenetic several blocks of current screen, block and previous frame picture contrast one by one, if the picture of this block is different with previous frame, just transmit this block, otherwise just do not transmit, in real work, PC computer screen changes, be also often that part changes, because do not transmit, do not have vicissitudinous block, thereby effectively saved the flow of transmission.

Fig. 3 is workflow of the present invention, and the core of Long-distance Control is the constantly process of transmission of a screen, is recycle to extinction, as that circulation arrow of outermost layer right side statement in Fig. 3.In this cyclic process, be constantly the screen of computer to be transferred to mobile phone or other equipment, every circulation primary, just transmit a computer screen, use the present invention, without full screen, transmit, the present invention records the picture current screen, next time is when transmit, blockette comparison (is 64 blocks by screen divider conventionally, also can be other a numeral), if present frame picture and the previous frame of this block are the same, just do not need transmission, that interior loop arrow of explaining in these process corresponding diagram 3 left sides, the number of times of this circulation is limited, screen divider becomes how many blocks, how many times just circulates, every circulation primary just compares a screen block, more complete, if this block is identical with previous frame, just enter circulation next time, if this block just transmit this blocks different from previous frame, and this block is memorized, enter again circulation next time, until the contrast of all screen blocks is complete.Certainly in the process of contrast screen, also each frame of possibility screen is all identical with previous frame, and screen is unchanged, at this moment, just can not transmit any data, automatically enters next screen comparison procedure.

figure of description

Fig. 1 adopts screen transmission technology of the present invention, screen block transmission, and the just transmission having changed, constant just do not transmit.

Fig. 2 is traditional screen transmission technology, and no matter whether screen changes, and whole screen transmits in the lump.

Fig. 3 is screen block transfer process.

Claims

1. the method that in Long-distance Control, screen partition piece transmits, the method comprises following characteristics:

Feature 1: show a virtual cursor on mobile phone screen, it doesn't matter for the cursor position on its position of this cursor and computer; Feature 2: user's finger moves on mobile phone screen, and virtual cursor is followed movement immediately, real-time response user's operation; Feature 3: after the virtual cursor on mobile phone screen moves, then its position is passed to PC computer, PC computer is mobile cursor pointer again, thus realize PC computer cursor following mobile phone screen virtual cursor.

2. the method as described in claim 1, is characterized in that:

The method is for remote control field, and computer screen picture is delivered on an other computer or equipment, when transmitting in real time computer screen picture, without transmission light target position in real time; The position of cursor is reverse transfer, is that manipulation end is delivered to controlled terminal.

3. the method as described in claim 1, is characterized in that:

This method not only comprises the operation of mobile phone to PC computer, also comprises that panel computer, PC computer or other have the remote control of the equipment of touch-screen to another computer.