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OBEX Protocol
OBEX (abbreviation of OBject EXchange, also termed IrOBEX) is a communication protocol that facilitates the exchange of binary objects between devices. It is maintained by the Infrared Data Association but has also been adopted by the Bluetooth Special Interest Group and the SyncML wing of the Open Mobile Alliance (OMA). One of OBEX's earliest popular applications was in the Palm III. This PDA and its many successors use OBEX to exchange business cards, data, even applications. Although OBEX was initially designed for infrared, it has now been adopted by Bluetooth, and is also used over RS-232, USB, WAP and in devices such as Livescribe smartpens. Comparison to HTTP OBEX is similar in design and function to HTTP in providing the client with a reliable transport for connecting to a server and may then request or provide objects. But OBEX differs in many important respects: *HTTP is normally layered above a TCP/IP link. OBEX can also be, but is commonly implemented on an IrL ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communication Protocol
A communication protocol is a system of rules that allows two or more entities of a communications system to transmit information via any variation of a physical quantity. The protocol defines the rules, syntax, semantics (computer science), semantics, and synchronization of communication and possible Error detection and correction, error recovery methods. Protocols may be implemented by Computer hardware, hardware, software, or a combination of both. Communicating systems use well-defined formats for exchanging various messages. Each message has an exact meaning intended to elicit a response from a range of possible responses predetermined for that particular situation. The specified behavior is typically independent of how it is to be Implementation, implemented. Communication protocols have to be agreed upon by the parties involved. To reach an agreement, a protocol may be developed into a technical standard. A programming language describes the same for computations, so there ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baseband
In telecommunications and signal processing, baseband is the range of frequencies occupied by a signal that has not been modulated to higher frequencies. Baseband signals typically originate from transducers, converting some other variable into an electrical signal. For example, the electronic output of a microphone is a baseband signal that is analogous to the applied voice audio. In conventional analog radio broadcasting, the baseband audio signal is used to modulate an RF carrier signal of a much higher frequency. A baseband signal may have frequency components going all the way down to the DC bias, or at least it will have a high ratio bandwidth. A modulated baseband signal is called a passband signal. This occupies a higher range of frequencies and has a lower ratio and fractional bandwidth. Various uses Baseband signal A ''baseband signal'' or ''lowpass signal'' is a signal that can include frequencies that are very near zero, by comparison with its highest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Python Programming Language
Python is a high-level, general-purpose programming language. Its design philosophy emphasizes code readability with the use of significant indentation. Python is dynamically type-checked and garbage-collected. It supports multiple programming paradigms, including structured (particularly procedural), object-oriented and functional programming. It is often described as a "batteries included" language due to its comprehensive standard library. Guido van Rossum began working on Python in the late 1980s as a successor to the ABC programming language, and he first released it in 1991 as Python 0.9.0. Python 2.0 was released in 2000. Python 3.0, released in 2008, was a major revision not completely backward-compatible with earlier versions. Python 2.7.18, released in 2020, was the last release of Python 2. Python consistently ranks as one of the most popular programming languages, and it has gained widespread use in the machine learning commu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C Programming Language
C (''pronounced'' '' – like the letter c'') is a general-purpose programming language. It was created in the 1970s by Dennis Ritchie and remains very widely used and influential. By design, C's features cleanly reflect the capabilities of the targeted Central processing unit, CPUs. It has found lasting use in operating systems code (especially in Kernel (operating system), kernels), device drivers, and protocol stacks, but its use in application software has been decreasing. C is commonly used on computer architectures that range from the largest supercomputers to the smallest microcontrollers and embedded systems. A successor to the programming language B (programming language), B, C was originally developed at Bell Labs by Ritchie between 1972 and 1973 to construct utilities running on Unix. It was applied to re-implementing the kernel of the Unix operating system. During the 1980s, C gradually gained popularity. It has become one of the most widely used programming langu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Java Programming Language
Java is a high-level, general-purpose, memory-safe, object-oriented programming language. It is intended to let programmers ''write once, run anywhere'' ( WORA), meaning that compiled Java code can run on all platforms that support Java without the need to recompile. Java applications are typically compiled to bytecode that can run on any Java virtual machine (JVM) regardless of the underlying computer architecture. The syntax of Java is similar to C and C++, but has fewer low-level facilities than either of them. The Java runtime provides dynamic capabilities (such as reflection and runtime code modification) that are typically not available in traditional compiled languages. Java gained popularity shortly after its release, and has been a popular programming language since then. Java was the third most popular programming language in according to GitHub. Although still widely popular, there has been a gradual decline in use of Java in recent years with other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Java APIs For Bluetooth
Java APIs for Bluetooth Wireless Technology (JABWT) is a J2ME specification for APIs that allows Java MIDlets running on embedded devices such as mobile phones to use Bluetooth for short-range wireless communication. JABWT was developed as JSR-82 under the Java Community Process. JSR 82 implementations for Java 2 Platform Standard Edition (J2SE) are also available. Background The original Java Specification Request (JSR-82) was submitted by Motorola and Sun Microsystems, and approved by the Executive Committee for J2ME in September 2000. JSR-82 provided the first standardized Java API for Bluetooth protocols, allowing developers to write applications using Bluetooth that work on all devices conforming to the specification. The first version of JSR-82 was released in March 2002. The most recent update to JSR-82, Maintenance Draft Review 4, was released in March 2010. The specification, reference implementation, and Technology Compatibility Kit (TCK) are maintained at Motorola ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WBXML
WAP Binary XML (WBXML) is a binary representation of XML. It was developed by the WAP Forum and since 2002 is maintained by the Open Mobile Alliance as a standard to allow XML documents to be transmitted in a compact manner over mobile networks and proposed as an addition to the World Wide Web Consortium's Wireless Application Protocol family of standards. The MIME media type application/vnd.wap.wbxml has been defined for documents that use WBXML. WBXML is used by a number of mobile phones. Usage includes Exchange ActiveSync for synchronizing device settings, address book, calendar, notes and emails, SyncML for transmitting address book and calendar data, Wireless Markup Language, Wireless Village, OMA DRM for its rights language and Over-the-air programming for sending network settings to a phone. See also * Extensible Binary Meta Language * Compiled Wireless Markup Language * XML * Binary XML * BSON BSON (; Binary JSON) is a computer data interchange format extending JSON ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
To-do List
Time management is the process of planning and exercising conscious control of time spent on specific activities—especially to increase effectiveness, efficiency and productivity. Time management involves demands relating to Employment, work, Interpersonal relationship, social life, family, hobbies, personal interests and commitments. Using time effectively gives people more choices in managing activities. Time management may be aided by a range of skills, tools and techniques, especially when accomplishing specific tasks, projects and goals complying with a due date. Initially, the term time management encompassed only business and work activities, but eventually the term comprised personal activities as well. A time management system is a designed combination of processes, tools, techniques and methods. Time management is usually a necessity in project management, managing projects, as it determines the project completion time and scope. Cultural views Differences in the wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IrMC
{{Refimprove, date=August 2021 IrMC or Infrared Mobile Communications was an early infrared synchronisation standard for mobile devices that was created and/or pioneered by Ericsson. According to IrDA, it ''defines easy exchange of business cards, notes, calendar items and to do lists between mobile devices. It also defines call control and audio transfer between a mobile phone and Notebook PC.'' Status The small number of websites referencing the standard suggests that it seems to be largely obsolete today, as with the concept of infra red synchronisation in general. See also *Infrared *vCard *IrDA IrDA is a wireless standard designed for exchanging data using infrared (IR). Infrared ports for this purpose have been implemented in portable electronic devices such as mobile telephones, laptops, cameras, printers, and medical devices. The mai ... References IrDA Specifications and Technical Notes- The standard is available for purchase here. Infrared technology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OBEX Push
The obex () is the point in the human brain at which the fourth ventricle narrows to become the central canal of the spinal cord. Cerebrospinal fluid can flow from the fourth ventricle into the obex. In anatomical studies, the obex has been found to occur approximately 10–12 mm above the level of the foramen magnum. In patients with low tonsillar position, the obex has been found at or below the plane of the foramen magnum. The obex occurs in the caudal medulla. The decussation of sensory fibers happens at this point. Clinical significance Lesions at the location can result in obstructive hydrocephalus. The most common lesion at this location is a subependymoma, a benign tumor. Hemangioblastoma has been observed in this location. Detection of prions Immunohistochemistry (IHC) to test brain, lymph, and neuroendocrine tissues for the presence of the abnormal prion protein to diagnose wasting diseases like chronic wasting disease in deer A deer (: deer) or true deer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VCard
vCard, also known as VCF ("Virtual Contact File"), is a file format standard for electronic business cards. vCards can be attached to e-mail messages, sent via Multimedia Messaging Service (MMS), on the World Wide Web, instant messaging, NFC or through QR code. They can contain name and address information, phone numbers, e-mail addresses, URLs, logos, photographs, and audio clips. vCard is used as a data interchange format in smartphone contacts, personal digital assistants (PDAs), personal information managers (PIMs) and customer relationship management systems (CRMs). To accomplish these data interchange applications, other "vCard variants" have been used and proposed as "variant standards", each for its specific niche: XML representation, JSON representation, or web pages. Overview The standard Internet media type (MIME type) for a vCard has varied with each version of the specification.RFC 6350, section 10.1 "Media Type Registration" vCards can be embedd ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
UCS-2
UTF-16 (16-bit Unicode Transformation Format) is a character encoding that supports all 1,112,064 valid code points of Unicode. The encoding is variable-length as code points are encoded with one or two ''code units''. UTF-16 arose from an earlier obsolete fixed-width 16-bit encoding now known as UCS-2 (for 2-byte Universal Character Set), once it became clear that more than 216 (65,536) code points were needed, including most emoji and important CJK characters such as for personal and place names. UTF-16 is used by the Windows API, and by many programming environments such as Java and Qt. The variable length character of UTF-16, combined with the fact that most characters are ''not'' variable length (so variable length is rarely tested), has led to many bugs in software, including in Windows itself. UTF-16 is the only encoding (still) allowed on the web that is incompatible with 8-bit ASCII. However it has never gained popularity on the web, where it is declared by under 0.00 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
