CN103729140A - Method for implementing interaction on human-machine interfaces on basis of DRM (data rights management) - Google Patents

Abstract

The invention relates to a method for implementing interaction on human-machine interfaces on the basis of DRM (data rights management). A hardware circuit for implementing the method is provided with a microcontroller unit AT91SAM9263 which is used as a master control chip, and the microcontroller unit AT91SAM9263 is respectively connected with a liquid crystal display and a key sequence and is connected with a single-board computer by an RS232 serial port. The method sequentially includes steps of 1), enabling a single chip microcomputer to read configuration files, initializing display and equipment and initializing the interfaces of the LCD (liquid crystal display); 2), detecting the key sequence by the aid of the microcontroller unit AT91SAM9263, performing corresponding operation according to keys and displaying operation data on the liquid crystal display; 3), transmitting setting and modification results to the single-board computer. The method has the advantages that the hardware circuit works in a currently utilized AM (amplitude modulation) and FM/VHF (frequency modulation/very-high frequency) frequency bands; an MPEG-4 (moving picture experts group-4) is utilized by DRM under given bandwidths as compared with the traditional analog broadcasting, accordingly, large quantities of frequency channels can be accommodated, and the tone quality, the fading robustness and the interference robustness are high.

Description

The mutual implementation method of a kind of man-machine interface based on DRM

Technical field

The present invention relates to wireless communication field, particularly the mutual implementation method of a kind of man-machine interface based on DRM.

Background technology

The long medium short wave wireless communication of traditional analog AM standard have wide coverage, equipment cost low, easily offer, be applicable to the features such as fixing and mobile reception, by countries in the world as one of the most basic information dissemination technology means.But exist simultaneously, poor transmission, business are single, the easy shortcoming such as disturbed.The existing AM broadcast transmitter of China time of putting into operation is not long, hesitates to discard; Change brand-new digitizer, hold and can't stand economically.Therefore, hope can be carried out digital improvement to existing equipment, and digital AM produces thus.The present invention also sets out based on this object.

Based on DRM broadcast system communication system, compared with the ocean New Technology Of Shortwave Communication adopting with current naval, thering is the feature DRM(shortwave high-speed digitization communication facilities that transfer rate is high, anti-fading, ability of anti-multipath is strong) product has outstanding features such as offering simple, communication distance is far away, wide coverage, is the main means of communication between my naval vessels and land command post.Be applicable to naval vessels stop with movement in communicate, command, dispatch.

DRM is unique in the world off-patent digital display circuit, and for shortwave, medium wave and long wave, its can spread all over the world existing frequency and bandwidth, to the major improvement of simulation AM broadcast.DRM finally can dominate the broadcast market of the AM frequency range below worldwide 30MHz.

Summary of the invention

Object of the present invention, exactly for overcoming the deficiencies in the prior art, provides a kind of man-machine interface based on DRM mutual implementation method, and system is the integration of set of number audio broadcasting technology, and its design effort is in AM and the FM/VHF frequency range of current use.With respect to case of conventional analog broadcast, under given bandwidth, DRM is used MPEG-4(advanced audio), can hold more channel, possess higher tonequality, and possess robustness for decline and interference.

The present invention realizes by such technical scheme: the mutual implementation method of a kind of man-machine interface based on DRM, it is characterized in that, the hardware circuit of application this method adopts microcontroller AT91SAM9263 as main control chip, microcontroller AT91SAM9263 is connected with LCDs, push-button array respectively, by RS232 serial ports connecting single board computing machine; By button, transmit instruction to microcontroller AT91SAM9263, service data is finally presented on the interface of LCD, and described method comprises following order step:

1) initialization: single-chip microcomputer reads in configuration file, shows initialization, device initialize, to LCD initialization interface;

2) by microcontroller AT91SAM9263, detected push-button array and carried out corresponding operating according to button, service data is presented in liquid crystal display;

3) result arranging and change is sent to single board computer.

The beneficial effect that the present invention produces is: man-machine interaction is comprised of display and button, liquid crystal display side arranges one group of button, by the corresponding parameter of key-press input, adopt with low cost and peripheral simple single chip computer AT 91SAM9263 to complete screen control and button detection, and the result arranging and change is sent to single board computer.Hardware circuit is operated in AM and the FM/VHF frequency range of current use, and with respect to case of conventional analog broadcast, under given bandwidth, DRM is used MPEG-4, can hold more channel, possesses higher tonequality, and possesses robustness for decline and interference.

Accompanying drawing explanation

Fig. 1 is operation interface schematic diagram of the present invention;

Fig. 2 is hardware block diagram of the present invention;

Fig. 3 is software flow block diagram of the present invention.

Embodiment

For a more clear understanding of the present invention, describe in conjunction with the accompanying drawings and embodiments the present invention in detail:

As shown in Figure 1 to Figure 3, the hardware circuit of application this method adopts microcontroller AT91SAM9263 as main control chip, microcontroller AT91SAM9263 is connected with LCDs, push-button array respectively, by push-button array, transmit instruction to microcontroller AT91SAM9263, service data is finally presented on the interface of LCD;

When equipment energising operation, the first display section of initialization apparatus, button and serial ports, carries out file configuration, for display section, will retrieve current state, demonstrates title and the configuration of current state, is shown in as shown in Figure 1 LCD LCDs.

When user carries out button operation to equipment, be divided into 5 buttons and 3 kinds of operations,

1) right and left key is selected the title of eight palace figure on liquid crystal display

2) upper and lower key is that acquiescence enters current title, to this title pattern numerical value of modifying

3) in, key (acknowledgement key) is to MCU(microprocessor) send title and the numerical value of current selected

According to the above description, in conjunction with art technology, can realize the solution of the present invention.

Claims (1)

1. the mutual implementation method of the man-machine interface based on DRM, it is characterized in that, the hardware circuit of application this method adopts microcontroller AT91SAM9263 as main control chip, microcontroller AT91SAM9263 is connected with LCDs, push-button array respectively, by RS232 serial ports connecting single board computing machine; By button, transmit instruction to microcontroller AT91SAM9263, service data is finally presented on the interface of LCD, and described method comprises following order step:

1) initialization: single-chip microcomputer reads in configuration file, shows initialization, device initialize, to LCD initialization interface;

2) by microcontroller AT91SAM9263, detected push-button array and carried out corresponding operating according to button, service data is presented in liquid crystal display;

3) result arranging and change is sent to single board computer.

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