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Person-to-person realtime IP communications, like presence, VoIP and video applications, offer
clear benefits for the enterprise as time- and money-savers. Unified functionality is now available,
where all of the above are integrated into one streamlined application and interconnect with other
networks. This creates a very important business tool and usage is increasing.
標(biāo)簽：
Person-to-person
communications
applications
realtime
上傳時間：
2015-06-28
上傳用戶：維子哥哥
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This gives examples of Session Description Protocol (SDP)
offer/answer exchanges. Examples include codec negotiation and
selection, hold and resume, and addition and deletion of media
streams. The examples show multiple media types, bidirectional,
unidirectional, inactive streams, and dynamic payload types. Common
Third Party Call Control (3pcc) examples are also given.
標(biāo)簽：
Description
exchanges
Protocol
Examples
上傳時間：
2014-01-02
上傳用戶：450976175
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劍指offer（java版67題），Java面試求職學(xué)習(xí)必不可少的一本書，上面記載了很多經(jīng)典的Java面試題。
標(biāo)簽：
offer
java
計算機(jī)
學(xué)習(xí)
上傳時間：
2020-03-27
上傳用戶：qwerasdf123
-
MicroC/OS-II
The Real-Time Kernel
Second Edition
By Jean J. Labrosse
CMP Books, CMP Media LLC
Copyright 2002 by CMP Books
ISBN 1-57820-103-9
CMP Books
CMP Media LLC
1601 West 23rd Street, Suite 200
Lawrence, Kansas 66046
785-841-1631
www.cmpbooks.com
email: books@cmp.com
The programs and applications on this disk have been carefully tested, but are
not guaranteed for any particular purpose. The publisher does not offer any
warranties and does not guarantee the accuracy, adequacy, or completeness of any
information and is not responsible for any errors or omissions or the results
obtained from use of such information.
標(biāo)簽：
MicroCOS_II
嵌入式
實時操作系統(tǒng)
上傳時間：
2013-06-09
上傳用戶：zhyiroy
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This document was developed under the Standard Hardware and Reliability Program (SHARP) TechnologyIndependent Representation of Electronic Products (TIREP) project. It is intended for use by VHSIC HardwareDescription Language (VHDL) design engineers and is offered as guidance for the development of VHDL modelswhich are compliant with the VHDL Data Item Description (DID DI-EGDS-80811) and which can be providedto manufacturing engineering personnel for the development of production data and the subsequent productionof hardware. Most VHDL modeling performed to date has been concentrated at either the component level orat the conceptual system level. The assembly and sub-assembly levels have been largely disregarded. Under theSHARP TIREP project, an attempt has been made to help close this gap. The TIREP models are based upon lowcomplexity Standard Electronic Modules (SEM) of the format A configuration. Although these modules are quitesimple, it is felt that the lessons learned offer guidance which can readily be applied to a wide range of assemblytypes and complexities.
標(biāo)簽：
Modelling
Guide
Navy
VHDL
上傳時間：
2014-12-23
上傳用戶：xinhaoshan2016
-
Abstract: A laser module designer can use a fixed resistor, mechanical pot, digital pot, or a digital-to-analogconverter (DAC) to control the laser driver's modulation and bias currents. The advantages of a programmablemethod (POT or DAC) are that the manufacturing process can be automated and digital control can be applied(e.g., to compensate for temperature). Using POTs can be a more simple approach than a DAC. There can be aslight cost advantage to using a POT, but this is usually not significant relative to other pieces of the design.Using a DAC can offer advantages, including improved linearity (translating to ease of software implementationand ability to hit the required accuracy), increased board density, a wider range of resolutions, a betteroptimization range, ease of use with a negative voltage laser driver, and unit-to-unit consistency
標(biāo)簽：
POT
DAC
應(yīng)用筆記
校準(zhǔn)
上傳時間：
2013-11-13
上傳用戶：ca05991270
-
Many 8-bit and 16-bit microcontrollers feature 10-bitinternal ADCs. A few include 12-bit ADCs, but these oftenhave poor or nonexistent AC specifi cations, and certainlylack the performance to meet the needs of an increasingnumber of applications. The LTC®2366 and its slowerspeed versions offer a high performance alternative, asshown in the AC specifi cations in Table 1. Compare theseguaranteed specifi cations with the ADC built into yourcurrent microcontroller.
標(biāo)簽：
ADC
微控制器
正
性能
上傳時間：
2013-10-26
上傳用戶：jackandlee
-
Video cable driver amplifi er output stages traditionallyrequire a supply voltage of at least 6V in order to providethe required output swing. This requirement is usuallymet with 5V supplies by adding a boost regulator or asmall local negative rail, say via the popular LT®1983-3.Such additional circuitry is unnecessary in typical 1VP-Pvideo connections, such as HD component video, if thecable driver amplifi ers simply offer near rail-to-rail outputcapability when powered from 5V.
標(biāo)簽：
5V電源
高分辨率
視頻解決
方案
上傳時間：
2013-11-16
上傳用戶：yanyangtian
-
When a system designer specifies a nonisolated dc/dc powermodule, considering the needed input voltage range isequally as important as considering the required performanceattributes and features. Generally, nonisolated moduleshave either a narrow or a wide input voltage range. Narrowinputmodules typically have a nominal input voltage of3.3, 5, or 12 V. For systems that operate from a tightlyregulated input bus—such as those that do not use batterybackup—a narrow-input module is often adequate sincethe input remains fairly stable.offering greater flexibility, wide-input modules operatewithin a range of 7 to 36 V, which includes the popular12- or 24-V industrial bus. This enables a single module tobe used for generating multiple voltages. These modulesare ideal for industrial controls, HVAC systems, vehicles,medical instrumentation, and other applications that usea loosely regulated distribution bus. In addition, systemspowered by a rectifier/battery charger with lead-acidbattery backup almost always require wide-input modules.System designers who choose power supplies may wantto take a close look at the latest generation of wide-inputdc/dc modules.
標(biāo)簽：
Wide-input
modules
offer
dc
上傳時間：
2014-12-24
上傳用戶：dragonhaixm
-
The SN65LBC170 and SN75LBC170 aremonolithic integrated circuits designed forbidirectional data communication on multipointbus-transmission lines. Potential applicationsinclude serial or parallel data transmission, cabledperipheral buses with twin axial, ribbon, ortwisted-pair cabling. These devices are suitablefor FAST-20 SCSI and can transmit or receivedata pulses as short as 25 ns, with skew lessthan 3 ns.These devices combine three 3-state differentialline drivers and three differential input linereceivers, all of which operate from a single 5-Vpower supply.The driver differential outputs and the receiverdifferential inputs are connected internally to formthree differential input/output (I/O) bus ports thatare designed to offer minimum loading to the buswhenever the driver is disabled or VCC = 0. Theseports feature a wide common-mode voltage rangemaking the device suitable for party-lineapplications over long cable runs.
標(biāo)簽：
170
LBC
SN
TRIP
上傳時間：
2013-10-13
上傳用戶：ytulpx
