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Code flow broadcast card and driving method of code flow collection card

A technology of code stream playback and driving method, which is applied in the field of code stream transmission, and can solve problems such as complicated program design, long development cycle, and constraints on driver program development

Inactive Publication Date: 2005-10-19
XIDIAN UNIV
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AI Technical Summary

Problems solved by technology

[0003] The general driver development method is to use the DDK driver development kit, which has a long development cycle and complicated program design; to a certain extent, it restricts the development of the driver

Method used

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  • Code flow broadcast card and driving method of code flow collection card
  • Code flow broadcast card and driving method of code flow collection card
  • Code flow broadcast card and driving method of code flow collection card

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Embodiment Construction

[0020] The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] The driver program of the present invention includes a code stream player card driver program and a code stream acquisition card driver program, and is a key interface between a computer application program and a hardware code stream player card and a code stream acquisition card. The two drivers adopt the WDM (Windows DriverModel) driver model, with the help of the third-party software package DriverStudio, developed in the Visual C++6.0 environment, with hardware initialization unit, application program and driver program communication unit, data transmission unit and installation document. The above-mentioned units work in coordination to drive the hardware to play and collect streams at high speed.

[0022] The driver program of the present invention cooperates with the operating system to complete hardware initialization, m...

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Abstract

The driving method for code flow broadcast card and code flow acquisition card includes transmitting code flow data between hardware and application program in DMA mode; judging the interruption type with the ISR of the drive program and processing various interruption types through calling DPC routine in the interruption delay process; and realizing the control of the application program on the hardware through the communication between the application program and the drive program. The present invention solves the problem in interfacing the code flow broadcast card and the code flow acquisition card with the application program to make the code flow broadcast card and the code flow acquisition card operate normally on computer PCI bus to complete code flow broadcast card and acquisition task and further analysis and monitoring. The drive program completes the code flow transmission correctly at code flow rate as high as 120 Mbps without data loss.

Description

technical field [0001] The invention relates to a code stream transmission method in the field of digital television, in particular to a driving method for a code stream playing card and a code stream acquisition card. Background technique [0002] In order to ensure the security and portability of the system, the Windows operating system restricts the application program to directly operate the hardware device, and the application program can only read, write and control the device through the driver program. There are many self-developed hardware, and to make these hardware work normally under the Windows operating system of the PC, Windows drivers must be written for them. [0003] The general driver development method is to use the DDK driver development kit, which has a long development cycle and complicated program design; to a certain extent, it restricts the development of the driver. Contents of the invention [0004] The purpose of the present invention is to ov...

Claims

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Application Information

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IPC IPC(8): G06F9/00G06F13/00H04N7/00
Inventor 李兵兵李乐乐杨秀莲蔚述明黄新平王莎莎
Owner XIDIAN UNIV
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