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<table cellpadding="3" cellspacing="0" width="100%" class="forumline"> <thead> <caption><table border="0" cellspacing="0" cellpadding="0" width="100%" class="forumheader"> <tr> <td align="left" valign="bottom" width="25"><img src="http://picsrv.fora.pl/AcidTechTiger/images/hdr_left.gif" width="25" height="27" alt="" /></td> <td align="center" class="forumheader-mid">Topic review</td> <td align="right" valign="bottom" width="25"><img src="http://picsrv.fora.pl/AcidTechTiger/images/hdr_right.gif" width="25" height="27" alt="" /></td> </tr></table></caption> </thead> <tbody> <tr> <th class="thCornerL" width="22%" height="26">Author</th> <th class="thCornerR">Message</th> </tr> <tr> <td width="22%" align="left" valign="top" class="row1"><span class="name"><a name=""></a><b>ghdhair100</b></span></td> <td class="row1" height="28" valign="top"><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="100%"><img src="http://picsrv.fora.pl/AcidTechTiger/images/post_old.gif" width="12" height="9" alt="Post" title="Post" border="0" /><span class="postdetails">Posted: Wed 3:27, 16 Mar 2011<span class="gen"> </span> Post subject: Bluetooth-Operation-427</span></td> </tr> <tr> <td colspan="2"><hr /></td> </tr> <tr> <td colspan="2"><span class="postbody">Bluetooth Operation <br />The networking standards of Bluetooth will transmit <br />data via low power radio frequency. Bluetooth <br />communicates on a 2.45 GHz frequency. This very <br />band of frequency has been set aside by international <br />agreement for the use of industrial and medical <br />devices. <br />Many devices that you already known and use take <br />advantage of this frequency band. Garage door <br />openers, baby monitors, and the next generation of <br />mobile phones all use this frequency within the ISM <br />band. Ensuring that Bluetooth and the other <br />devices don't interfere with each other is a crucial <br />part of the design process. <br />One of the ways Bluetooth will avoid interfering <br />with other electronic devices is by sending out <br />weak signals of around 1 mw. In comparison, even <br />the most powerful of cell phones can transmit a <br />signal of 3 watts. <br />The low power signals will limit the range of a <br />Bluetooth device to around 32 feet, which cut the <br />chances of interference between your computer and <br />other electronic devices. Even though it has low <br />power, Bluetooth doesn't require a line of sight <br />between the communicating devices. The walls in <br />your home won't stop the signal, making it great <br />for rooms throughout the house. <br />Bluetooth can connect 8 devices at the same time. <br />With each of those devices on the same radius,<a href="http://www.ghdaustraliastore.com/" target="_blank">GHD Straighteners Australia</a>, <br />you may think they would interfere with each <br />other, although it's very unlikely. Bluetooth <br />utilizes a technique known as low frequency <br />hopping, which makes it harder for more than <br />one device to transmit on the same frequency <br />at the same time. <br />With this technique, a device will use 79 <br />individual, randomly chosen frequencies within <br />a designated range, which change from one another <br />on a regular basis. <br />In the case of Bluetooth,<a href="http://www.australiaghdonline.com/ghd-pure-white-hair-straightener-p-191.html" target="_blank">Ghd Pure Straightener</a>, the transmitters will <br />change frequency 1,<a href="http://www.discountghdhair.net/ghd-hair-purple-straightener-p-197.html" target="_blank">GHD Purple Straightener Online</a>,600 times or more every <br />second, meaning that more devices can make full <br />use of the radio spectrum. Since every <br />transmitter of Bluetooth will use spread spectrum <br />automatically, it's very unlikely that two <br />transmitters will be on the same frequency at the <br />exact same time. <br />When the Bluetooth devices come within close range <br />of each other, an electronic conversation will <br />occur to determine whether or not they have <br />data to share or whether one needs to take total <br />control. The user doesn't have any buttons to <br />press or commands to give - as the conversation <br />will occur automatically. <br />Once the conversation has occured, the devices <br />will form a network. Bluetooth devices will <br />create a PAN (Personal Area Network) or piconet <br />that may fill a room. Once the piconet has been <br />established, the devices will randomly hop in <br />frequencies. <br />(word count 427) <br />PPPPPThe Court of Appeal pointed out that R and F's submission in the county court was of overt, conscious racism, and it was not prepared to find that there had been unconscious discrimination.The decisionThe Court of Appeal said that, unlike the ordinary civil claim where the judge decides, on the claimant's evidence only, whether the claimant has made out a case, in this case the judge had had the benefit of the whole of the evidence. Despite the school's failure to comply with the statutory requirements, the judge had been entitled to find on the basis of all the evidence that R and F had not proved racial discrimination. <br /> <br /> <br /> <a href="http://www.xuande99.com/home/space.php?uid=19612&do=blog&id=6330" target="_blank">49 - Telescope for Kids</a></span></td> </tr> </table></td> </tr> <tr> <td colspan="2" class="spaceRow"><img src="http://picsrv.fora.pl/AcidTechTiger/images/spacer.gif" alt="" width="1" height="1" /></td> </tr> </tbody> </table>
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