CN112399267A - Hardware panel control system and scheduling method in IP system based on NMOS - Google Patents
Hardware panel control system and scheduling method in IP system based on NMOS Download PDFInfo
- Publication number
- CN112399267A CN112399267A CN202011217248.5A CN202011217248A CN112399267A CN 112399267 A CN112399267 A CN 112399267A CN 202011217248 A CN202011217248 A CN 202011217248A CN 112399267 A CN112399267 A CN 112399267A
- Authority
- CN
- China
- Prior art keywords
- nmos
- configuration information
- module
- equipment
- management service
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/64322—IP
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1073—Registration or de-registration
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Business, Economics & Management (AREA)
- General Business, Economics & Management (AREA)
- Computer Networks & Wireless Communication (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention provides a hardware panel control system and a scheduling method in an IP system based on NMOS, comprising the following steps: an NMOS hardware control panel and an RDS management service module; the RDS management service module is used for discovering and managing all IT equipment in the system; registering all IT equipment; configuring incoming and outgoing signals of all IT equipment to form NMOS configuration information; sending the NMOS configuration information to an NMOS hardware control panel; the NMOS hardware control panel is used for receiving NMOS configuration information sent by the RDS management service module; and performing signal switching operation on the IT equipment according to the NMOS configuration information. The NMOS hardware control panel of the invention is matched with a discovery registration module and configuration software to form an RDS management service module, thereby realizing the scheduling management and control of professional broadcast television IT equipment signals.
Description
Technical Field
The invention belongs to the field of computer bus communication, and relates to a hardware panel control system and a scheduling method in an IP system based on NMOS.
Background
The ultra-high-definition video technology is a new great technical innovation in the video industry after digitalization and high-definition, and has great significance in meeting the increasing beautiful living needs of people and promoting the overall strength improvement of the information industry and the cultural industry of China.
With the rapid development of the ultra-high-definition video industry, the 4K/8K ultra-high-definition video signals have higher requirements on the pure broadband, the technical architecture based on SDI (serial digital signal interface) equipment in the process of manufacturing and broadcasting programs to program transmission in the broadcast television center is transferred to the work based on the IP technology, the characteristics of high bandwidth, high concurrency and bidirectional transmission of the IP technology are fully utilized, the links of 4K ultra-high-definition whole station and whole link scheduling and transmission are opened, and the signal scheduling capability and efficiency, the signal exchange capability and efficiency and the signal transmission efficiency of the 4K/8K ultra-high-definition signal manufacturing and broadcasting of the television station are comprehensively improved; under the trend of the development of the IP technology of the 4K ultra high definition television signal, the devices for scheduling and processing the IP television signal are more and more apt to adopt an nmos (network Media Open specification) protocol to realize the standard unification and interconnection of all IT devices.
The NMOS is an interface specification developed by the international organization of AMWA (advanced Media Workflow association), is an open standard, provides a specification of control and management for an IP signal transmission layer, provides a relevant interface to facilitate the interaction of all IT equipment and a control system, and changes the originally complex bottom layer operation into simple operation; at present, an SDN centralized management control system is generally used for controlling and managing radio and television equipment adopting an NMOS protocol, and management and control of all IT equipment are realized by deploying control software in the SDN centralized management control system, so as to complete scheduling of ultra-high-definition video signals; however, the SDN software control system has high requirements on bottom-layer hardware, so that the whole system construction cost is increased, and a lot of managers need to be invested in system configuration, management and maintenance in the later period, which is not beneficial to rapid deployment and maintenance of the lightweight system.
Disclosure of Invention
Aiming at the problems, the invention provides a hardware panel control system and a scheduling method in an IP system based on NMOS (N-channel metal oxide semiconductor), which realize the scheduling management and control of television signals of professional broadcasting and television equipment, and ensure that various systems such as a rebroadcasting vehicle, a broadcasting master controller and the like can conveniently and efficiently realize the real-time scheduling of 4K ultra-high definition IP television signals.
In order to achieve the above object, the present invention provides a hardware panel control system in an NMOS-based IP system, comprising: an NMOS hardware control panel and an RDS management service module;
the RDS management service module is used for:
discovering and managing all IT devices in the system;
registering all IT equipment;
configuring incoming and outgoing signals of all IT equipment to form NMOS configuration information;
sending the NMOS configuration information to an NMOS hardware control panel;
the NMOS hardware control panel is used for:
receiving NMOS configuration information sent by the RDS management service module;
and performing signal switching operation on the IT equipment according to the NMOS configuration information.
As a further improvement of the invention, the RDS management service module comprises: a discovery registration module and a configuration module.
As a further improvement of the present invention,
the discovery registration module automatically discovers all IT equipment in a system network based on an NMOS protocol, automatically registers all IT equipment in an RDS management service module and constructs a network topology;
the configuration module configures the signal input and output of all IT equipment to form NMOS configuration information.
As a further improvement of the invention, the NMOS hardware control panel comprises a front panel key module, a back panel interface module, a command processing module and a power supply processing module; the command processing module comprises an ARM processor and an FPGA processor;
the ARM processor is used for:
receiving NMOS configuration information sent by an RDS management service module through an Ethernet interface in the backboard interface module, and transmitting the NMOS configuration information to the FPGA processor;
issuing the scheduling instruction to corresponding equipment in the scheduling instruction by using an NMOS (N-channel metal oxide semiconductor) protocol to complete scheduling;
the FPGA processor is used for:
displaying the received NMOS configuration information on a front panel key module;
receiving a scheduling instruction issued by a front panel key module; transmitting the processed scheduling instruction to an ARM processor after the pre-configured logic processing;
the front panel key module is used for:
displaying NMOS configuration information;
receiving a dispatching instruction issued by a worker based on the NMOS configuration information, wherein the dispatching instruction comprises equipment needing to be switched by the worker through a key on an NMOS hardware control panel according to the NMOS configuration information; a worker selects a signal source to be switched from the configured signal source list;
issuing a scheduling instruction to the FPGA processor;
the power supply processing module is used for:
and necessary electric energy is provided for the normal operation of the NMOS hardware control panel.
As a further improvement of the invention, all the IT equipment is connected with a switch, and signal interaction is carried out between the IT equipment and the NMOS hardware control panel and between the IT equipment and the RDS management service module through the switch.
The invention also provides a hardware panel control system and a scheduling method in the IP system based on the NMOS, comprising the following steps:
the RDS management service module automatically discovers and registers all IT equipment in the system;
the RDS management service module performs incoming and outgoing signal configuration on all IT equipment to form NMOS configuration information;
the RDS management service module issues the NMOS configuration information to an NMOS hardware control panel;
the method comprises the steps that an NMOS hardware control panel receives NMOS configuration information sent by an RDS management service module, and signal switching operation is conducted on IT equipment according to the NMOS configuration information;
and finishing signal switching corresponding to the IT equipment.
As a further improvement of the invention, the RDS management service module specifically comprises a discovery registration module and a configuration module.
As a further improvement of the present invention, the discovery registration module automatically discovers all IT devices in the system network based on the NMOS protocol, automatically registers all IT devices in the RDS management service module, and constructs a network topology;
the configuration module configures the signal input and output of all IT equipment to form NMOS configuration information.
As a further improvement of the present invention, the NMOS hardware control panel receives NMOS configuration information sent by the RDS management service module, and performs a signal switching operation on the IT device on the NMOS hardware control panel according to the NMOS configuration information, including:
the ARM processor receives NMOS configuration information sent by the RDS management service module and transmits the NMOS configuration information to the FPGA processor;
the FPGA processor displays the received NMOS configuration information on a front panel key module;
the front panel key module displays NMOS configuration information, and a worker touches a key to issue a scheduling instruction, wherein the instruction comprises equipment needing signal switching selected by the worker through the key in an NMOS hardware control panel according to the NMOS configuration information; a worker selects a signal source to be switched from the configured signal source list;
the front panel key module receives a scheduling instruction of a worker and issues the scheduling instruction to the FPGA processor;
the FPGA processor is subjected to logic processing by pre-configuration, and transmits a processed scheduling instruction to the ARM processor;
and the ARM processor issues the scheduling instruction to corresponding equipment in the scheduling instruction by using an NMOS protocol to complete scheduling.
As a further improvement of the invention, all IT equipment is connected with the switch, and signal interaction is carried out between the IT equipment and the NMOS hardware control panel and between the IT equipment and the RDS management service module through the switch.
Compared with the prior art, the invention has the beneficial effects that:
the invention is based on NMOS protocol, and realizes the scheduling management and control of professional broadcast television IT equipment signals by providing a control panel for realizing the scheduling of 4K ultra-high definition IP television signals based on NMOS protocol and combining RDS registration service software and configuration software to form an RDS management service module, thereby meeting the real-time scheduling requirements of various systems such as rebroadcast vehicles, broadcast master control and the like for conveniently and efficiently realizing the 4K ultra-high definition IP television signals; compared with an SDN centralized management control system, the method has the advantages that the requirements on bottom hardware equipment are reduced, the scheduling IT equipment is wider, and meanwhile, the system construction cost is reduced.
According to the NMOS hardware control panel, signal processing can be rapidly realized through the FPGA processor and the ARM processor, the front panel key module is arranged, the key operation is simpler, and signal switching can be rapidly realized.
Drawings
FIG. 1 is a schematic diagram of a hardware panel control system in an NMOS-based IP system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an NMOS hardware control panel according to an embodiment of the present invention;
fig. 3 is a flowchart of a scheduling method of an NMOS-based IP system hardware panel control system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention is described in further detail below with reference to the attached drawing figures:
as shown in fig. 1, the hardware panel control system in the NMOS-based IP system provided by the present invention includes: an NMOS hardware control panel and an RDS management service module;
the RDS management service module comprises a discovery registration module and a configuration module;
wherein the content of the first and second substances,
the discovery of the registration module is carried out,
automatically discovering and managing all IT equipment in a system network based on an NMOS IS04 protocol, automatically registering all IT equipment in an RDS management service module and constructing a network topology;
the IT equipment is connected with the switch and performs signal interaction with the RDS management service module through the switch.
A configuration module for configuring the operation of the mobile terminal,
configuring incoming and outgoing signals of all IT equipment to form NMOS configuration information;
and sending the NMOS configuration information to an NMOS hardware control panel.
As shown in fig. 2, the NMOS hardware control panel includes a front panel key module, a back panel interface module, a command processing module, and a power supply processing module; the command processing module comprises an ARM processor and an FPGA processor;
an NMOS hardware control panel for controlling the NMOS hardware control panel,
receiving NMOS configuration information sent by an RDS management service module;
performing signal switching operation on the IT equipment on an NMOS hardware control panel according to the NMOS configuration information;
wherein the content of the first and second substances,
the IT equipment is connected with the switch, and signal interaction is carried out between the IT equipment and the NMOS hardware control panel through the switch.
Further, in the above-mentioned case,
an ARM processor for processing the received signal,
receiving NMOS configuration information sent by an RDS management service module through an Ethernet interface in a backboard interface module, and transmitting the NMOS configuration information to an FPGA processor;
issuing the scheduling instruction to corresponding equipment in the scheduling instruction by using an NMOS (N-channel metal oxide semiconductor) protocol to complete scheduling;
an FPGA processor for, in response to a command from the FPGA processor,
displaying the received NMOS configuration information on a front panel key module;
receiving a scheduling instruction issued by a front panel key module;
transmitting the processed scheduling instruction to an ARM processor after the pre-configured logic processing; a front panel key module for, when in use,
displaying NMOS configuration information;
receiving a scheduling instruction issued by a worker based on the NMOS configuration information, wherein the scheduling instruction comprises equipment needing to be switched by the worker through keys in an NMOS hardware control panel according to the NMOS configuration information; selecting a signal source to be switched from the configured signal source list;
issuing a scheduling instruction to the FPGA processor;
a power supply processing module used for supplying power to the power supply module,
and necessary electric energy is provided for the normal operation of the NMOS hardware control panel.
As shown in fig. 3, the present invention further provides a scheduling method of a hardware panel control system in an NMOS-based IP system, including:
s1, the finding and registering module in the RDS management service module automatically finds and registers all IT devices in the system;
wherein the content of the first and second substances,
the discovery registration module adopts RDS registration service software; the configuration module adopts configuration software;
all IT equipment is connected with the switch and performs signal interaction with the RDS management service module through the switch;
the discovery registration module automatically discovers all IT equipment in the system network based on the NMOS IS04 protocol, automatically registers all IT equipment in the RDS management service module and constructs a network topology.
S2, configuring incoming and outgoing signals of all IT equipment by a configuration module in the RDS management service module to form NMOS configuration information; the IT equipment comprises recording equipment, image processing equipment, a player and the like;
s3, the RDS management service module issues the NMOS configuration information to the NMOS hardware control panel;
and S4, the NMOS hardware control panel receives the NMOS configuration information sent by the RDS management service module, and the signal switching operation is carried out on the IT equipment on the NMOS hardware control panel according to the NMOS configuration information.
All IT equipment is connected with a switch, and signal interaction is carried out between the IT equipment and an NMOS hardware control panel through the switch;
the ARM processor receives NMOS configuration information sent by the RDS management service module and transmits the NMOS configuration information to the FPGA processor;
the FPGA processor displays the received NMOS configuration information on a front panel key module;
the front panel key module displays NMOS configuration information, and a worker touches a key to issue a scheduling instruction;
the front panel key module receives a scheduling instruction of a worker, wherein the scheduling instruction comprises equipment needing to be switched by the worker through keys in an NMOS hardware control panel according to NMOS configuration information; selecting a signal source to be switched from the configured signal source list;
issuing a scheduling instruction to the FPGA processor;
the FPGA processor is subjected to logic processing by pre-configuration, and transmits a processed scheduling instruction to the ARM processor;
and the ARM processor issues the scheduling instruction to corresponding equipment in the scheduling instruction by using an NMOS protocol to complete scheduling.
S5, the corresponding IT equipment receives the signal scheduling instruction, modifies the multicast address and completes signal switching;
and S6, after the dispatching is successful, the FPGA processor uploads a dispatching success instruction, and the NMOS hardware control panel displays the state after the dispatching.
The invention has the advantages that:
the invention is based on NMOS protocol, and realizes the scheduling management and control of professional broadcast television IT equipment signals by providing a control panel for realizing the scheduling of 4K ultra-high definition IP television signals based on NMOS protocol and combining RDS registration service software and configuration software to form an RDS management service module, thereby meeting the real-time scheduling requirements of various systems such as rebroadcast vehicles, broadcast master control and the like for conveniently and efficiently realizing the 4K ultra-high definition IP television signals; compared with an SDN centralized management control system, the method has the advantages that the requirements on bottom hardware equipment are reduced, the scheduling IT equipment is wider, and meanwhile, the system construction cost is reduced.
According to the NMOS hardware control panel, signal processing can be rapidly realized through the FPGA processor and the ARM processor, the front panel key module is arranged, the key operation is simpler, and signal switching can be rapidly realized.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Hardware panel control system in IP system based on NMOS characterized in that, includes: an NMOS hardware control panel and an RDS management service module;
the RDS management service module is used for:
discovering and managing all IT devices in the system;
registering all IT equipment;
configuring incoming and outgoing signals of all IT equipment to form NMOS configuration information;
sending the NMOS configuration information to an NMOS hardware control panel;
the NMOS hardware control panel is used for:
receiving NMOS configuration information sent by the RDS management service module;
and performing signal switching operation on the IT equipment according to the NMOS configuration information.
2. The control system of claim 1, wherein: the RDS management service module comprises: a discovery registration module and a configuration module.
3. The control system of claim 2, wherein:
the discovery registration module automatically discovers all IT equipment in a system network based on an NMOS protocol and automatically registers all IT equipment in the RDS management service module;
the configuration module configures the signal input and output of all IT equipment to form NMOS configuration information.
4. The control system of claim 1, wherein: the NMOS hardware control panel comprises a front panel key module, a back panel interface module, a command processing module and a power supply processing module; the command processing module comprises an ARM processor and an FPGA processor;
the ARM processor is used for:
receiving NMOS configuration information sent by an RDS management service module through an Ethernet interface in the backboard interface module, and transmitting the NMOS configuration information to the FPGA processor;
issuing the scheduling instruction to corresponding equipment in the scheduling instruction by using an NMOS (N-channel metal oxide semiconductor) protocol to complete scheduling;
the FPGA processor is used for:
displaying the received NMOS configuration information on a front panel key module;
receiving a scheduling instruction issued by a front panel key module; transmitting the processed scheduling instruction to an ARM processor after the pre-configured logic processing;
the front panel key module is used for:
displaying NMOS configuration information;
receiving a dispatching instruction issued by a worker based on the NMOS configuration information, wherein the dispatching instruction comprises equipment needing to be switched by the worker through a key in an NMOS hardware control panel according to the NMOS configuration information; a worker selects a signal source to be switched from the configured signal source list;
and sends the data to the FPGA processor;
the power supply processing module is used for:
and necessary electric energy is provided for the normal operation of the NMOS hardware control panel.
5. The control system of claim 1, wherein: all IT equipment is connected with a switch, and signal interaction is carried out on the IT equipment, the NMOS hardware control panel and the RDS management service module through the switch.
6. The scheduling method of the hardware panel control system in the IP system based on the NMOS is characterized by comprising the following steps:
the RDS management service module automatically discovers and registers all IT equipment in the system;
the RDS management service module performs incoming and outgoing signal configuration on all IT equipment to form NMOS configuration information;
the RDS management service module issues the NMOS configuration information to an NMOS hardware control panel;
the method comprises the steps that an NMOS hardware control panel receives NMOS configuration information sent by an RDS management service module, and signal switching operation is conducted on IT equipment according to the NMOS configuration information;
and finishing signal switching corresponding to the IT equipment.
7. The scheduling method of claim 6, wherein: the RDS management service module specifically comprises a discovery registration module and a configuration module.
8. The scheduling method of claim 7 wherein the discovery registration module automatically registers all IT devices in the system network based on the NMOS protocol and establishes a network topology with the RDS management service module;
the configuration module configures the signal input and output of all IT equipment to form NMOS configuration information.
9. The scheduling method of claim 6, wherein the NMOS hardware control panel receives NMOS configuration information sent by the RDS management service module, and performing a signal switching operation on the IT device at the NMOS hardware control panel according to the NMOS configuration information comprises:
the ARM processor receives NMOS configuration information sent by the RDS management service module and transmits the NMOS configuration information to the FPGA processor;
the FPGA processor displays the received NMOS configuration information on a front panel key module;
the front panel key module displays NMOS configuration information, and a worker touches a key to issue a scheduling instruction, wherein the instruction comprises equipment needing signal switching selected by the worker on an NMOS hardware control panel through the key according to the NMOS configuration information; a worker selects a signal source to be switched from the configured signal source list;
the front panel key module receives a scheduling instruction of a worker and issues the scheduling instruction to the FPGA processor;
the FPGA processor is subjected to logic processing by pre-configuration, and transmits a processed scheduling instruction to the ARM processor;
and the ARM processor issues the scheduling instruction to corresponding equipment in the scheduling instruction by using an NMOS protocol to complete scheduling.
10. The scheduling method of claim 6, wherein: all IT equipment are connected with the switch, and signal interaction is carried out on the switch, the NMOS control panel and the RDS management service module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011217248.5A CN112399267A (en) | 2020-11-04 | 2020-11-04 | Hardware panel control system and scheduling method in IP system based on NMOS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011217248.5A CN112399267A (en) | 2020-11-04 | 2020-11-04 | Hardware panel control system and scheduling method in IP system based on NMOS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112399267A true CN112399267A (en) | 2021-02-23 |
Family
ID=74598761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011217248.5A Pending CN112399267A (en) | 2020-11-04 | 2020-11-04 | Hardware panel control system and scheduling method in IP system based on NMOS |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112399267A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105760129A (en) * | 2016-02-24 | 2016-07-13 | 西安诺瓦电子科技有限公司 | Mobile communication method and device and relevant application |
| EP3462703A1 (en) * | 2017-09-29 | 2019-04-03 | Tektronix, Inc. | Mirroring flow configurations for internet protocol receivers |
| US20200106840A1 (en) * | 2017-06-02 | 2020-04-02 | Huawei Technologies Co., Ltd. | Service Discovery Method, Registration Center, and Device |
| JP2020102695A (en) * | 2018-12-20 | 2020-07-02 | 日本電気株式会社 | Control device and control method for controlling broadcasting system |
-
2020
- 2020-11-04 CN CN202011217248.5A patent/CN112399267A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105760129A (en) * | 2016-02-24 | 2016-07-13 | 西安诺瓦电子科技有限公司 | Mobile communication method and device and relevant application |
| US20200106840A1 (en) * | 2017-06-02 | 2020-04-02 | Huawei Technologies Co., Ltd. | Service Discovery Method, Registration Center, and Device |
| EP3462703A1 (en) * | 2017-09-29 | 2019-04-03 | Tektronix, Inc. | Mirroring flow configurations for internet protocol receivers |
| JP2020102695A (en) * | 2018-12-20 | 2020-07-02 | 日本電気株式会社 | Control device and control method for controlling broadcasting system |
Non-Patent Citations (3)
| Title |
|---|
| BLACKMAGICDESIGN: "《Installation and Operation Manual-ATEM Live Production Switchers》", 30 June 2020, pages: 1036 - 1053 * |
| JED DEAME: "《NMOS White Paper-The Control Software for AV over IP》", 22 October 2020, pages: 1 - 10 * |
| 用户1324186: "NMOS的发展近况", 《云+社区-腾讯云》, 7 November 2019 (2019-11-07) * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6904451B1 (en) | Wireless networked presentation system | |
| WO2020207043A1 (en) | Base station switching-on method and apparatus, computer storage medium, and device | |
| US9014209B2 (en) | Apparatus, method and system of wireless communication according to a protocol adaptation layer (PAL) management protocol | |
| WO2011063740A1 (en) | Base station, network system and implementation method | |
| CN110267213B (en) | Wide-band and narrow-band fusion communication information system for railway passenger station | |
| CN104661085A (en) | Multi-way wireless display method and device | |
| CN101854444A (en) | Visible dispatching system and dispatching method | |
| CN102017516A (en) | Systems and methods for media distribution | |
| CN101715096A (en) | Transfer device, transfer method, and program | |
| CN101742405A (en) | Bluetooth broadcast communication system and Bluetooth broadcast communication method | |
| US9392631B2 (en) | Wireless communication apparatus | |
| CN102118397B (en) | Teleconference communication method and system based on mobile phones | |
| CN102948116A (en) | Method and apparatus for transmitting content to plurality of devices | |
| CN106209285B (en) | Mobile intensive public's broadcast and information issuing system and method | |
| CN104539993B (en) | A kind of broadcast high definition television access device and method based on USB transmission of video | |
| CN112399267A (en) | Hardware panel control system and scheduling method in IP system based on NMOS | |
| CN104966146A (en) | Airport operation command system | |
| CN210986120U (en) | Video networking system | |
| CN110189561B (en) | Distributed movable teaching system | |
| WO2018098696A1 (en) | Integrated access system | |
| US7417663B2 (en) | Videoconferencing service system, videoconferencing service operating method and service center | |
| CN103731371A (en) | Method for network data receiving channel management for double-module set top box | |
| CN106657875A (en) | Command scheduling method method and device | |
| US9049737B2 (en) | Multiplexing and demultiplexing radio channels | |
| CN103840974A (en) | Method for achieving local zero configuration based on C-CMTS burned-in address |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |