CN1941787A

CN1941787A - Method for setting tag in A/V network apparatus

Info

Publication number: CN1941787A
Application number: CN 200510094785
Authority: CN
Inventors: 林孝俊; 任康熙
Original assignee: LG Electronics Kunshan Computer Co Ltd
Current assignee: LG Electronics Kunshan Computer Co Ltd
Priority date: 2005-09-30
Filing date: 2005-09-30
Publication date: 2007-04-04

Abstract

In the A/V control network with multi devices in same type, the invention makes those same type devices to automatically set their own different IDs in order to distinguish the devices in same type and in same network.

Description

The establishing method of device identifier in the A/V network

Technical field

The present invention relates to a kind of home network, the establishing method of device identifier in particularly a kind of A/V network.

Background technology

Nearest many mini-plants (device) have also used computer function, some cheap and general network media technology also occur simultaneously, and have dropped into commercial operation.

This technology is connected to television set (TV), computer (PC), the sound equipment plurality of devices such as (Audio) of family expenses on the network, and this using method and establishing method are very easy, bring great convenience to the user.The A/V Control Network is exactly the home network that has adopted this technology.

The A/V Control Network generally uses A/V control (Control) holding wire that the various particular devices of current use are coupled together.Its object mainly is all devices of A/V, and promptly VCR, DVD, PVR, Settop Box, A/V Receiver and relevant Combi product couple together all A/V equipment by holding wire.

Between the feature of A/V Control Network in A/V Control connect and general communication network (Ethernet, PLC) between the two, utilize the Broadcasting mode, information is sent to other devices from specific device.That is, other all devices of the information that equipment sent can both receive simultaneously.

This AV Control Network (Control) has all adopted simple latticed form usually, need not specific network protocol (protocol), and its communication mode is very simple, therefore need not central server.

Fig. 1 is the pie graph of common A/V Control Network.

The A/V Control Network can connect polytype equipment, also can connect a plurality of with a kind of equipment.Give an example, as shown in Figure 1, equipment VCRa 111, the VCRb112 that the A/V Control Network connects, the VCR (Video Cassette Recorder) that VCRc 113 belongs to same type.

But, the A/V Control Network is as a kind of simple network, do not exist and give device identifier (ID) and the central server that manages, when the same a kind of equipment that connecting in the network more than two (network for example shown in Figure 1 even then the equipment of VCRa 111, VCRb 112,113 3 same types of VCRc), be difficult to each equipment is distinguished.

In addition, though in the production process of product, can give specific identifier (ID) to each equipment, with to distinguishing with a kind of equipment more than 2 in the consolidated network, but this just must pay the cost that increases product cost, therefore this mode is difficult for being adopted by businessman, nor is convenient to equipment is managed.

And though utilized outside input to realize that the AV control technology that automaticallyes switch also can provide certain convenience to the user in the past, this technology can only be used in the current equipment combination of having determined, the scope of application is very restricted.That is to say, the A/V control technology that does not have additional networks control basis can only be used in such as these limited functions of automatic broadcast (Auto Play), and can only apply between 2 equipment, can use the equipment of this technology to be subjected to very big restriction.

But, from now on along with A/V massesization more and more, the user wished to use than former more function, the function that it not only requires to use is expanded, but also require in existing simple control signal exchange level, the use object-based device that is used for network control and management also is expanded.

Under such trend, under the situation of a plurality of same type equipment of very possible in one network connection, just must use unique (unique) identifier (ID) to distinguishing, with the communication of carrying out being wanted with a kind of equipment.

Summary of the invention

Therefore, in order to solve the existing problem of original technology, the invention provides the establishing method of device identifier in a kind of A/V network, make in the A/V Control Network that plurality of devices participates in, when existing under a plurality of situations with a kind of equipment, relevant with a kind of equipment can automatic setting self identifier (ID) so that can distinguish mutually between the equipment.

To achieve these goals, the present invention comprised with the next stage:

Phase I, after equipment joins in the network, judge that its information of carrying out transmits or message pick-up;

Second stage if be judged as message pick-up in the above-mentioned stage, then confirms that to whether having received request the information that exists confirms;

Phase III, confirm the information that exists if received above-mentioned request, then extract identifier (ID), and the identifier (ID) of itself and self is compared;

The quadravalence section if above-mentioned comparative result is identical for both, then changes the identifier (ID) of self;

Five-stage, self ID the state of change takes place or the state that do not change in, after the information that activated transmits, request is confirmed that the information that exists broadcasts (broadcast);

In the 6th stage, after the information of having broadcasted above-mentioned request affirmation existence, current identifier (ID) is set at the identifier (ID) of self.

Above-mentioned request confirms that the information that exists comprises type (device type), the serial number information such as (Seq.) of equipment.

The change of above-mentioned identifier (ID) is exactly to change serial number (Seq.).

As mentioned above, the present invention when existing under a plurality of situations with a kind of equipment, makes with the mutually different self ID of a kind of relevant device automatic setting in the A/V Control Network that plurality of devices participates in, so that can distinguish the equipment of the same race in the consolidated network.

Therefore, if adopted the present invention, the user need not take into account between a plurality of same type equipment of using in the A/V Control Network can produce conflict, thereby has reached the effect that facilitates for the user.

Description of drawings

Fig. 1 is the pie graph of common A/V Control Network.

Fig. 2 is the accompanying drawing that identifier in the embodiments of the invention (ID) constitutes.

Fig. 3 is the signal flow graph of device identifier assignment procedure in the embodiments of the invention.

Embodiment

Following with reference to accompanying drawing, the present invention is described in detail.

Embodiments of the invention supposition A/V Control Network structure is a structure shown in Figure 1.

Usually A/V control (Control) order conveys a message to other particular devices with particular device and is the basis, but on network characteristic, is communicated to all devices in the mode of broadcasting (Broadcasting).

The equipment of reception information is analyzed the device identifier (device ID) of information extraction, confirms whether it is self information to be processed.

That is, as shown in Figure 2, information in title (header) source (source) and destination (destination) part in comprised equipment (device) ID of indication equipment type (device type) and serial number (Seq.).Its form is very single, can not take very big capacity, therefore can not increase the burden of system.

The said equipment identifier (device ID) has comprised " device type " (type of relevant device) and " seq:0 " (serial number) information.Suppose in a kind of equipment, the corresponding serial number (seq) of equipment, the serial number of each equipment is made as " 0 " when beginning, promptly be set at " Seq:0 " state.

Can both carry out two-way communication at hypothetical network, and carry under the prerequisite that prevents the information collision computing rule, carry out following explanation.

Illustrate.Utilizing hard-wire (hardware joint) mode, when carrying out single-threaded two-way communication, preventing that the combination of information collision computing rule from having judged the current voltage status on the circuit and the voltage status of Tx, Rx end.

With reference to the signal flow graph of accompanying drawing 3, to the present invention as describing with a kind of equipment room dynamic identifier (ID) method of determining on the network.

Connection device power supply in opening the A/V Control Network, and when sending specific request, the request of transmission are confirmed the information that exists.This information is sent in all devices that is connected on the A/V Control Network.

In fact, all devices has all received above-mentioned information, and still the equipment that has finds that after the device type of destination is judged this information and self have nothing to do, so just abandon the information of above-mentioned reception.

Suppose as shown in Figure 3, with the order transmission information of equipment VCRa 111, VCRb 112, VCRc 113.

At first, be connected VCRa 111 on the A/V Control Network after having waited for random time, the information that exists is confirmed in the request of transmission.

At this moment, VCRa 111 is connected on the A/V Control Network and has passed through after the random time, at first transmit by its execution information, attempt to carry out when information transmits at VCRb 112 or VCRc 113, because having detected other equipment is using current network, therefore can actual execution information transmission work, clash to prevent information.

Therefore, in the time will asking to confirm that the information that exists is communicated among the VCRa 111, included device id in the information that VCRb 112, VCRc 113 requests of extracting are confirmed to exist, the ID of itself and self is compared, if result relatively is both unanimities, will carry out the operation that changes self ID.

That is to say that because the content of VCRb 112, VCRc 113 self ID is consistent with the content that is communicated to VCRa111, so will change serial number (seq) value in the self ID, the serial number (seq) that is about in the self ID increases " 1 ".

Serial number (seq) value of the VCRc 113 of VCRb 112 has all become " 1 ", i.e. " seq:1 " like this.

Then, the equipment that has changed serial number (seq) value is confirmed to exist information to broadcast to the request that has comprised the ID that self had changed.

At this moment, VCRb 112 with regard to energy execution information transmission work, and passes on the information of request affirmation existence by network after having passed through the time arbitrarily.If at this moment VCRc 113 attempts to carry out the information transmission, at first will detect network state, learn ongoing communication in the network then, thus can execution information transmission work.

The request that above-mentioned VCRb 112 sends is confirmed to exist information to be communicated in all devices, but owing to the equipment beyond the VCR equipment all can be sayed without any conflicting with VCRb 112, so have only VCR equipment just can make a response to this information.

At this moment the ID that sends owing to VCRb 112 is " VCR|seq:1 ", but the ID of VCRa 111 is " VCR|seqO ", and both differences are not so can clash.Because VCRa 111 can not clash with VCRb 112, so can not confirm to exist information to make a response to the request of VCRb 112 yet.

And VCRc 113 is because current ID value is " VCR|seq:1 ", and is identical with the ID of VCRb 112, so VCRc 113 will promptly, generate new ID---" VCR|seq:2 " with its serial number (seq) value increase " 1 ".

Then, if VCRc 113 after through the time arbitrarily, attempts execution information transmission work, will confirm the information of existence to all devices request of passing on by network.

At this moment, VCRa 111, VCRb 112 are because ID and the ID of self of VCRc 113 are different, so can not make a response to the information that this request affirmation exists.

Therefore, even when on network, connecting the equipment of a plurality of same types, by carrying out said process repeatedly, the mutually different ID of automatic setting, even there is not central server, in a kind of communication process of equipment room, also can distinguish relevant device, realize the communication of optimizing.

Claims

1, the establishing method of device identifier in a kind of A/V network is characterized in that, comprises with the next stage:

Second stage if be judged as message pick-up in the phase I, then confirms that to whether having received request the information that exists confirms;

Phase III, confirm the information that exists if received above-mentioned request, then extract identifier, and the identifier of itself and self is compared;

The quadravalence section if above-mentioned comparative result is identical for both, then changes the identifier of self;

Five-stage, self identifier the state of change takes place or the state that do not change in, after the information that activated transmits, request is confirmed that the information that exists broadcasts;

In the 6th stage, after the information of having broadcasted above-mentioned request affirmation existence, current identifier is set at the identifier of self.

2, the establishing method of device identifier in the A/V network as claimed in claim 1 is characterized in that: request confirms that the information that exists comprises type, the serial number of equipment.

3, the establishing method of device identifier in the A/V network as claimed in claim 1, it is characterized in that: the change of identifier is exactly to change serial number.