Electronic Components Datasheet Search
Selected language     English  ā–¼


H.261 Datasheet(PDF) 5 Page - List of Unclassifed Manufacturers

Part No. H.261
Description  LINE TRANSMISSION OF NON-TELEPHONE SIGNALS
Download  31 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  ETC1 [List of Unclassifed Manufacturers]
Homepage  
Logo 

 
 5 page
background image
2
Recommendation H.261
(03/93)
T 1502 430-90/ d01
C od in g cont ro l
S our ce
co der
So ur ce
d ecod er
V id eo mu ltiplex
cod er
Vid eo mu ltiplex
de co de r
T ra nsm ission
bu ffe r
Re ceivin g
buf fe r
Tr a nsm ission
co de r
C od ed
bit s tre am
Vid eo
sign al
a) Vid eo cod er
b) Vid eo d ecod er
Exte rn al con tro l
R ece iving
de cod er
FIGURE 1/H.261
Outline block diagram of the video codec
FIGURE 1/H.261...[D01] = 9 CM
2.1
Video input and output
To permit a single Recommendation to cover use in and between regions using 625- and 525-line television standards, the
source coder operates on pictures based on a common intermediate format (CIF). The standards of the input and output
television signals, which may, for example, be composite or component, analogue or digital and the methods of performing
any necessary conversion to and from the source coding format are not subject to Recommendation.
2.2
Digital output and input
The video coder provides a self-contained digital bit stream which may be combined with other multi-facility signals (for
example as defined in Recommendation H.221). The video decoder performs the reverse process.
2.3
Sampling frequency
Pictures are sampled at an integer multiple of the video line rate. This sampling clock and the digital network clock are
asynchronous.
2.4
Source coding algorithm
A hybrid of inter-picture prediction to utilize temporal redundancy and transform coding of the remaining signal to reduce
spatial redundancy is adopted. The decoder has motion compensation capability, allowing optional incorporation of this
technique in the coder.
2.5
Bit rate
This Recommendation is primarily intended for use at video bit rates between approximately 40 kbit/s and 2 Mbit/s.
2.6
Symmetry of transmission
The codec may be used for bidirectional or unidirectional visual communication.




Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31 


Datasheet Download



Related Electronics Part Number

Part NumberComponents DescriptionHtml ViewManufacturer
MABACT00591:1 Transmission Line Transformer 4.5 - 3000MHz 1 2 3 Tyco Electronics
MABACT00391:1 Transmission Line Transformer 5-3000MHz 1 2 3 Tyco Electronics
HCC4066BOR MULTIPLEXING OF ANALOG OR DIGITAL SIGNALS QUAD BILATERAL SWITCH FOR TRANSMISSION 1 2 3 4 5 MoreSTMicroelectronics
TLP113Isolated Line Receiver Simplex / Multiplex Data Transmission Computer.Peripheral Interface Microprocessor System Interface Digital Isolation For A / D 1 2 3 4 5 MoreToshiba Semiconductor
MABACT00561:1 Transmission Line Transformer 4.5-2000MHz 1 2 3 Tyco Electronics
HCF4066BQUAD BILATERAL SWITCH FOR TRANSMISSION OR MULTIPLEXING OF ANALOG OR DIGITAL SIGNALS 1 2 3 4 5 MoreSTMicroelectronics
ETC1-1-13E-Series RF 1:1 Transmission Line Transformer 4.5 - 3000 MHz 1 2 Tyco Electronics
MABACT00654:1 Transmission Line Transformer 500-3000MHz 1 2 3 Tyco Electronics
ETC16-4-2-3E-Series RF 1:4 Transmission Line Step-up Transformer 500 - 2500 MHz 1 2 Tyco Electronics
MABACT00664:1 Transmission Line Transformer 5-1000MHz 1 2 3 Tyco Electronics

Link URL

Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Bookmark   |   Link Exchange   |   Manufacturer List
All Rights ReservedĀ© Alldatasheet.com 2003 - 2017    


Mirror Sites
English : Alldatasheet.com  , Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp  |   Russian : Alldatasheetru.com
Korean : Alldatasheet.co.kr   |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com  |   Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl