CN104660877A - Web camera - Google Patents
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- CN104660877A CN104660877A CN201310576268.5A CN201310576268A CN104660877A CN 104660877 A CN104660877 A CN 104660877A CN 201310576268 A CN201310576268 A CN 201310576268A CN 104660877 A CN104660877 A CN 104660877A
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Abstract
The invention relates to a web camera, and particularly relates to improvement of a device controlling a camera, belonging to the technical field of telecommunication. The web camera has stable performances, strong antijamming capacity and clear images. The web camera comprises an audio-video acquisition module, an audio-video processing module, a control chip and a power module. The web camera is characterized in that a power supply provides power; a complementary metal oxide semiconductor (CMOS) image sensor converts an optical image into an electrical signal, then a vide analogue-digital converter (ADC) chip processes the electrical signal into a digital YCbCr4:2:2(8/16-bit) standard signal and the standard signal is sent to a DM365 for compressed encoding; a comparator processes the compressed and coded standard signal so as to obtain a digital signal; an audio ADC performs A/D conversion on an audio detected by a microwave integrated circuit (MIC), and digitalized audio data is output to the DM365 for audio compressed encoding; and encoded audio and video data is transmitted to a user terminal on the internet through a streaming media server.
Description
Technical field
the invention belongs to technical field of telecommunications, especially relate to a kind of improvement controlling the device of video camera.
Background technology
coal mine operation is because away from ground, and with a varied topography, bad environments, easily has an accident.Utilize Active Eyes, ground monitoring personnel can directly monitor down-hole situation in real time, can not only monitor and record the safety in production situation at underground work scene intuitively, and energy Timeliness coverage accident danger, prevent trouble before it happens, also can provide relevant first-hand image document for ex-post analysis accident.Along with the development of network remote video monitoring system, in mine supervision system, introduce modern network Active Eyes is a kind of trend.
currently available technology web camera needs external power line to power to machine itself, but, web camera can make security protection articles for use, require all have real time video signals transfer function in all cases, the mode of simple external power supply likely makes web camera lose power supply when unexpected situation appears in external power supply.Quitting work without web camera during external power supply, cannot video camera and transmission be carried out, making web camera site lose safety protection function.Existing web camera is generally only provided with a camera, and its image that can collect depends on this camera, and general camera can only collect the image in a distance range at synchronization.Therefore, existing web camera cannot complete global monitoring and local monitoring simultaneously.
Summary of the invention
the present invention is exactly for the problems referred to above, provides a kind of stable performance, antijamming capability by force and a kind of web camera of clear picture.
for achieving the above object, the present invention adopts following technical scheme, the present invention includes and be made up of audio-video collection module and audio frequency and video processing module, control chip and power module, it is characterized in that: by power supply energy supply, by CMOS image sensor, optical image is converted to the signal of telecommunication by web camera, then is sent to DM365 carries out compressed encoding by being treated to digital YCbCr4:2:2 (8/16-bit) standard signal depending on ADC chip; Again via the digital signal that comparator process obtains, equally, the audio frequency that MIC detects by audio ADC carries out A/D conversion, and digital audio data is outputted to DM365 and carry out compressed audio coding; Audio, video data after encoded is transferred to the user side on network by streaming media server.
as a kind of preferred version, control chip of the present invention adopts DM365 chip.
beneficial effect of the present invention.
optical image, by power supply energy supply, is converted to the signal of telecommunication by web camera by CMOS image sensor by the present invention, then is sent to DM365 carries out compressed encoding by being treated to digital YCbCr4:2:2 (8/16-bit) standard signal depending on ADC chip; Again via the digital signal that comparator process obtains, equally, the audio frequency that MIC detects by audio ADC carries out A/D conversion, and digital audio data is outputted to DM365 and carry out compressed audio coding; Audio, video data after encoded is transferred to the user side on network by streaming media server.After tested, front end is connected with CCD camera, and rear end is by AP access to LAN, and Terminal Server Client may have access to wireless network camera video image by browser.Test finds, system can obtain good real-time clear video image when meeting more than 1Mbps bandwidth.
Accompanying drawing explanation
in order to make technical problem solved by the invention, technical scheme and beneficial effect clearly understand, below in conjunction with the drawings and the specific embodiments, the present invention is further elaborated.Should be appreciated that embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
fig. 1 is schematic block circuit diagram of the present invention.
Embodiment
as shown in the figure, the present invention includes and be made up of audio-video collection module and audio frequency and video processing module, control chip and power module, it is characterized in that: by power supply energy supply, by CMOS image sensor, optical image is converted to the signal of telecommunication by web camera, then is sent to DM365 carries out compressed encoding by being treated to digital YCbCr4:2:2 (8/16-bit) standard signal depending on ADC chip; Again via the digital signal that comparator process obtains, equally, the audio frequency that MIC detects by audio ADC carries out A/D conversion, and digital audio data is outputted to DM365 and carry out compressed audio coding; Audio, video data after encoded is transferred to the user side on network by streaming media server.
control chip of the present invention adopts DM365 chip.
the present invention adopts that Leonardo da Vinci's high-performance multimedia processor TMS320DM365 finishing equipment of TI manages, the compression process of audio frequency and video and transport communication, wired network interface is realized by external ethernet physical layer chip, utilize USB to turn WI-FI and realize wireless communication, support TCP/IP procotol.
wireless network camera forms primarily of the part such as audio-video collection module and audio frequency and video processing module.Optical image is converted to the signal of telecommunication by CMOS by web camera, then is treated to BT.601/BT.656 numeral YCbCr4:2:2 (8/16-bit) standard signal by video AD C chip and is sent to DM365 and carries out compressed encoding; Equally, the audio frequency that MIC detects by audio ADC carries out A/D conversion, and digital audio data is outputted to DM365 and carry out compressed audio coding.Audio, video data after encoded is transferred to the user side on network by streaming media server.
be understandable that, above about specific descriptions of the present invention, the technical scheme described by the embodiment of the present invention is only not limited to for illustration of the present invention, those of ordinary skill in the art is to be understood that, still can modify to the present invention or equivalent replacement, to reach identical technique effect; Needs are used, all within protection scope of the present invention as long as meet.
Claims (2)
1. web camera, comprise and being made up of audio-video collection module and audio frequency and video processing module, control chip and power module, it is characterized in that: by power supply energy supply, by CMOS image sensor, optical image is converted to the signal of telecommunication by web camera, then is sent to DM365 carries out compressed encoding by being treated to digital YCbCr4:2:2 (8/16-bit) standard signal depending on ADC chip; Again via the digital signal that comparator process obtains, equally, the audio frequency that MIC detects by audio ADC carries out A/D conversion, and digital audio data is outputted to DM365 and carry out compressed audio coding; Audio, video data after encoded is transferred to the user side on network by streaming media server.
2. web camera according to claim 1, is characterized in that: described control chip adopts DM365 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310576268.5A CN104660877A (en) | 2013-11-18 | 2013-11-18 | Web camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310576268.5A CN104660877A (en) | 2013-11-18 | 2013-11-18 | Web camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104660877A true CN104660877A (en) | 2015-05-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310576268.5A Pending CN104660877A (en) | 2013-11-18 | 2013-11-18 | Web camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104660877A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107071521A (en) * | 2017-04-26 | 2017-08-18 | 西安诺瓦电子科技有限公司 | Video process apparatus and its input and output video signals long-distance monitoring method |
| CN113596567A (en) * | 2021-06-10 | 2021-11-02 | 保升(中国)科技实业有限公司 | Video networking technology |
-
2013
- 2013-11-18 CN CN201310576268.5A patent/CN104660877A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107071521A (en) * | 2017-04-26 | 2017-08-18 | 西安诺瓦电子科技有限公司 | Video process apparatus and its input and output video signals long-distance monitoring method |
| CN113596567A (en) * | 2021-06-10 | 2021-11-02 | 保升(中国)科技实业有限公司 | Video networking technology |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150527 |