900TVL Cameras? Good? Bad?
Some Asian manufacturers keep sending me news about 900TVL cameras. At first I thought that they were talking about HD-SDI cameras but after digging a little bit and with no clear answer this is what I assume:
The cameras they are talking about possibly use the same sensor as HD-SDI cameras (ICX138) but a different DSP. The video signal from the 900TVL cameras can be visualized by a normal DVR where as the video signal from an HD-SDI camera can only be visualized by an HD-SDI DVR. Therefore, I assume that the HD-SDI camera have a specific video protocol.
Am I correct?
Has anyone tried these cameras before?
Even though a normal DVR would not show the 900TVL camera's full size image, the low price could possibly be very attractive for the analog market. So I wonder if there is an opportunity here. Please share you technical and market knowledge on this.
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"...***** **** **** ************ **** ***** ********* ********** ***** ******* even ****** *** **** ** *** ************** (*.*., *** ****** encoder) **** *** ******* ***** ****** ****."
** ******* ****, * ******* *** *** ***** "******* ****" theory... *** **** ****'* ****** **** **** ** ***** ** analog ***** *******.
**** ** ***** *** ** ************ *** *** **** ******** then...
**** ****
**** ***** ******** ** **** **** ********* *********** ******, ***** ******** ** **.****************** ****************. **** ***** ** ******** ** *** ******, **** ********** of ***.* **** *****, *** * ***** ** *** **** lines. *** **** ***** **** ** *** *************. *** ********* (*********** ******** ********) *** **** ********************* ******** *******. **** ******** ******** *** ********** ******** ** simply ***** *** ********'* *** ** ***** *** *** ****** analog ******** *** **** ******** ******* ** ***** ** *********. However, **** ** ***** ***** *** *** ******* ***** **** such ******** ************* ******** ****************(****). ** *** ******** ****** (************ **** ***** *** *************) *** ****-******** **** ***** (***** ***** **** **** ***** be **** ** ******* ** *** ***** ******, *.*. {*,*,*,...,***}) are ***** ** *** ***** *****, *** *** ***-******** (***** other **** **** ***** ** *** ** ******* ** *** video ******, *.*. {*,*,*,...,***}) *** ***** ** *** ****** *****, to ***** ********-********* ** *** ***** ****************** ************* **.*******(******** ** **/*.***). *** **********,**** *********** *****-*/************ *** ***** (*** *******), *** ** **** * ****** vertical **********, *** * ***** ******** ********** ** ** ****** or ** ****** *** ******.
** ****** **** **** *** ******* *** *********** ** ***** at ***.
******, "***** ** **********" ** "***" ** *** *** **** as **** *****. ***** **** ****** ** **** ** ** 525 ********** ***** (*** ****** ** ***-*/* ********** ***** **********), which ** **** *** *** ********* **, ***** ** ********** is *** ******* ****** ** ********** ******** ***** *** *** see ** * ****** ******* ** *** ****** ***** *** width ** ***** ** *** **** ****** ****** (*:* **. 4:3) ****** **** **** ********.
**** ** ********* ******* ** ************* ****** ****** **** "******" can ****** **** ********. ****** ** *** ******** **** ****** NTSC ** ***. ***********, **** ********** ******** ******* ******** (*** monitors?) ** **** ********* ** *** ********** **********, ******** ** tested *** **** ****** **** * **** ******* *** *** no ********** ******** **** ****/**.
* ***** * ** *** *** **** ************ ** ********** between ** **** *** **** ******* *** * ****** ************ exist. * ****** ** * ******* *********** ** ******** **** the ****** ******* ******** ** **** *** *********** *********.
* *** ** *** **** ** *** *** **** ** will ***** **** ** *** **** **** *** *** ***** analog *******.
****** **** **** **** *****? **** **** **** **** ** the **** **** *** ** **** ****** *** ********** ** details ** *** ***** **** ** **** ****** **** * 500TVL **** ******?
* ***** ***** ** * ********** ********** ** ****** ****** cameras *** ****** *******. *** **** ** ***** ** **** much ** * ********** ** *** & ***? ***** ** a ********** ** *** ****** ** *********** **** *** ********* based ** *** ****** ***********. *********** *** ******* *********** ********** available ** ******* (****) *** ******** *** ****** ******* **** these ******* *** ***** ***** ** **** ***** *** ***** information ** ****.. ****** ***** *** **** ******* ******** *** displaying **** ***** ***********?
"***** ** * ********** ********** ** ****** ****** ******* *** 480TVL *******"
*** ********** ** **** **********? ****, ***** *** **** ****** cameras *********, ******* *** ******** *** **** ** * ********** difference ** ***** ******* ****** *** ****** *****?
********** - *** ******* ***** ******. * ***'* **** * specific ******. ** **** *** ** ** **** ****** ********** components. *** ****** ******** ** **** ****** *** * ***'* know *** **** **** **** *** *********** ***** ** ****** its *** ********** *******...
*** *** ********* *** *** *******, **** ************, **** ******, just ********* ****? * ** ****** ** ********** *** **** of *** ********** ** **** *** **** ***** ******** ** other *******?
**** ** ***** ******** ******'* **** ***+*** *** *.*** ******* (All *** **-******* ******* **** **** * ****** ************).
**** **** * **** **** *** *********** ** *** **** I **** **** *** ******** ********** ** ******** *****. *** prices *** ***** ******* *** **** **** ****.
** *** *** ********** **** **** ********* ****** ** ****(*)×***(*), some ****** ******** **** ****** ****** ******. * *****’* **** the ****** **** ***….
******** * **** ****** *** **** ****** (*****) **** * 960H *******, * ****'* *** *** ********** ** ********** ******* it *** * **** ****** ****** ******* * **** ** D1 *******. *********** *** *********** ** ******, * ****'* *********. Pixel ****** **** ****** **** ****** **** *** ***** ************* 500TVL.
*** ******* **'* ******** ********** ** *** ********** **********, ** cannot ******* *** **** ********** ** **** ***-****** ****** *******. That *** ****** ** * ****** ** ******* ***** ** performed **** ****. ** ****** ********, ****, *****, ****, ***, Verint, ************, ***** ****** *** ********* ******** *** *** *** of **** *** **** ** ******* ******* ********** ******** **** what ** ****** **** ****** ** ***+*** ****** ******* *** directly ** ***** *** ***** ***** ******** *** * ***** 9780 ******. *** **** *****!
** **** **** ****** ******* ** ***** **** * *** Sony *.*** ******. *** ***** ** *** **** * **** I **** **** ** ** ****** ******. *** ** ** still ******* **** *** ** ** ******* **** *** **** 720p. *** *** **** ***** ** ***** **** ***** ** how *** ******* ****** **. **** **** ******* ******** **** a *******, ** ***** ****** *** **** * **** ** camera.
**** ****** **** **** ******, *** **** ** ***** *** weakest **** ****** **** ******* **** ******. **** **** ***'* arent ******** ***** ** ***** ****. **** *** ******** *** even ** **** ** * ** ** ******. * ***** with ****, **** ****** ** **** *********** **** ****/**. *'** had ********* **** ****** **** **** *** **** *** ******* a ** ***** ** * **** *****, ***** ** ** improvement ** ***.
**** **** ***** ****, *** *** ****** **** **** ******* that *** ****** *** ** ******* * **** ****** *****, it ** ** *********** **** *** ****** ******* **** ***** sensor **** **** ******* * *** ***** ***** ****, *** they *** **** **** *********. ***** ** *** ** **** some ** ***** ***** *** ** *****. * ******** **** see ****** ********* *** **** ******. * ****** ***** *** at *** ***** ***** ***** ***.
*** **, *** **** *** *** *** **** ** ****** system ***** *** ****** ** *** ** *** *********.
*** **** **** ******? *** ***** ****!
*** - **'* ****-******!
* ***** **** *** **** "****-******" ****** ** ********* ** a *******. **** *****'* ******* ** ** ***** (** ****).
** ****** *******, **** ************ ****** ** ******** ** ** many ****, ***.
***. * ** **** **** ***! * **** ** *** my ***** ** *** ** ***** **** ** ******* *** myself ***** ******* **********.
****** ******* ** ** * ********* *****, **** ****** *** 800TVL ****** **. ** ************* ** **** ***** **** **** conventional **** ***** ********* ********** ***** ******* **** ****** *** rest ** *** ************** (*.*., *** ****** *******) **** *** support ***** ****** ****.
** ******** *******. *** ******* **** ******.
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****** ******* ** ** * ********* *****, **** ****** *** 800TVL ****** **. ** ************* ** **** ***** **** **** conventional **** ***** ********* ********** ***** ******* **** ****** *** rest ** *** ************** (*.*., *** ****** *******) **** *** support ***** ****** ****.
** ***** ********* ******* *********, ***** ******* ******* ****** **** ******, requiring * ********** ********* *******/***. ** *** *** **** ********** but ****** ****** ******** ****** ** **********.
***, ** *** **** ** **** ** ****** ************, ***** is ********, ***** **** ** ******* *********** ****** *** ** ***.