Patent Grant
10797982
The present invention relates to a main electronic device for communicating within a network and to a method for operating a main electronic device for communicating within a network. Specifically, the present invention relates to the field of requesting information from devices connected by a network.
In general, electronic devices are used in a wide field of applications. Such electronic devices may for example be a personal computer, a television, a video recorder, a DVD or HDD recorder, facsimile devices, digital cameras, mobile terminals for wireless communication or other electronic consumer devices. An important task in developing electronic devices is to enable the devices to be connected to a network or to other electronic devices and to communicate with each other.
When connecting electronic devices either directly or via a network it is important to know which electronic devices presently are connected and to request information on the status and type of the connected electronic devices.
It is therefore the object of the present invention to provide a main electronic device as well as a method for operating a main electronic device enabling to request information from further electronic devices connected by a network.
This object is solved by a main electronic device for communicating within a network according to claim 1 and by a method for operating a main electronic device for communicating within a network according to claim 1 and by a method for operating a main electronic device for communicating within a network according to claim 11.
The present invention relates to a main electronic device for communicating within a network comprising an interface for enabling communication within the network and a controller for sending polling messages via the network to logical addresses via said interface in order to request information from at least one further electronic device.
The present invention further relates to a method for operating a main electronic device for communicating within a network comprising the steps of enabling communication within the network and sending polling messages via the network to logical addresses via said interface in order to request information from at least one further electronic device.
Preferably, the controller is adapted to send the polling messages after switching the main electronic device on.
Further, preferably, the controller is adapted to send the polling messages after enabling the communication functionality, preferably after enabling the consumer electronics control CEC function, of the main electronic device.
Further, optionally, the controller after enabling the communication functionality of the main device and before sending the polling messages is adapted to send enable messages to each of the further electronic devices for enabling communication functionality, preferably for enabling the consumer electronics control CEC function, of each of the further electronic devices.
Advantageously, the controller is adapted to repeatedly send the polling messages.
In a preferred embodiment the controller is adapted to send the polling messages at predefined time intervals.
Preferably, the controller is adapted to send the polling messages to all logical addresses within the network except the logical address occupied by the main electronic device.
Advantageously, the controller is adapted to poll the logical addresses in a predefined order.
Preferably, the controller is adapted to poll the logical address first which is less likely to be occupied by an electronic device.
In a preferred embodiment, the controller is adapted to poll the logical addresses within a CEC network in the order from logical address 14 to logical address 0. The present invention will now be explained in more detail in the following description of preferred embodiments in relation to the enclosed drawings in which
The main electronic device 1 creates, holds and updates a list of all further electronic devices connected to the different logical addresses of the network 7. The functionality of the main electronic device is defined during the production process by the manufacturer. Since the list of connected electronic devices should always be up to date, the present invention provides several possibilities to update the list of the electronic devices connected to the network 7.
In case that the network 7 bases on the CEC standard, the main electronic device preferable is a television and the connected further electronic devices may be for example a recording device, a playback device, a tuner, and audio system or the like. The television functioning as main electronic device 1 can be adapted to show the list of the connected further electronic devices on the display within a graphical user interface (GUI).
A memory 5 is further provided for temporally or permanently storing data, information, programs, applications and the like. The memory 5 hereby may be divided into different memory spaces each providing different types of memory, e.g. a random access memory RAM, a flash memory or other types.
The input means 2, the output means 3 and the memory 5 are all connected to and in data communication with a controller 4. The controller 4 hereby controls and supervises the transmission and processing of data and/or information within the main electronic device 1. The controller 4 further supervises the operation of the main electronic device 1.
In addition the main electronic device 1 comprises an interface 6 enabling a communication of the main electronic device 1 via the network 7 with at least one further electronic device 1a to 1f. The interface 6 hereby can be adapted to enable a wireless or wired connection within the network 7. Alternatively, the interface 6 may comprise a multitude of interfaces each being adapted to communicate with a different further electronic device. The interface 6 is also connected to and in data communication with the controller 4. The main electronic device 1 via the interface 6 specifically is enabled to send messages to logical addresses within the network independently if an electronic device is connected to said logical address or not.
In order to keep an overview which electronic devices are at present connected to the network 7 the present invention proposes several methods. The main idea is that the main electronic device 1 via the interface 6 is enabled to communicate with the connected electronic devices. The controller 4 herefore via the interface 6 sends polling messages via the network 7 in order to request information from electronic devices which are connected to the network 7. Such information may comprise the mere information that the electronic device is present or may also comprise further status information, e.g. information on the type, state and so forth of the further electronic device. Such information may further comprise the device type, physical address, vendor ID, menu language setting and OSD name.
The present invention hereby covers two scenarios. The first case is that all devices or at least the main electronic device 1 are switched off. In case that the main electronic device 1 is switched on or that the interface 6 and thereby the communication function of the main electronic device 1 is enabled, the present invention provides a possibility to create a list of all electronic devices that are connected to the network 7 thereby reducing the communication over the network 7.
In the second case, where the main electronic device 1 is already switched on and a further electronic device is connected to the network 7, then the present invention provides an effective method of updating the list comprising all electronic devices connected to the network 7.
The process according to
The present invention in order to reduce the traffic on the bus therefore proposes to send the polling messages to the logical addresses in a predefined order which allows to reduce the traffic within the network 7. Specifically, the present invention proposes that the main electronic device 1 polls the logical address first which is less likely to be occupied by an electronic device. That is to say that in case that electronic devices are connected to the network 7, there is a certain order how the electronic devices occupy the logical addresses. For example, within a CEC network where there are provided logical addresses from 0 to 14, the electronic devices will first occupy logical addresses having a lower number. The present invention therefore proposes to poll logical addresses first having a higher number and which are less likely to be occupied by an electronic device. Specifically, the present invention proposes within a CEC network to poll the logical addresses from the higher address to the lower address, e.g. to poll the logical addresses from 14 to 0.
This is shown in
In the next step S4 the main electronic device checks whether it has already received information from some of the electronic devices connected to the network 7. In case the main electronic device 1 has already received information from some of the electronic devices then the according logical addresses are not polled even if until now they have not been polled.
Thereby unnecessary polling messages can be avoided. The main idea is therefore that the electronic devices connected with the network have the chance to report information about themselves before they are requested to do so by the polling messages send by the main electronic device 1. Redundant messages and therefore higher bus traffic can be avoided with higher possibility with the proposed advanced device discovery. Because sending and receiving messages is the most time consuming task during device discovery it is possible to reduce the time needed to finish the device discovery if the amount of messages to be sent or received is reduced. If the device discovery can be finished earlier it is also possible to show information about the connected electronic devices to the user earlier.
In step S5 the main electronic device 1 then creates a list of all further electronic devices connected to the network 7. The process ends in step S6, e.g. with switching off the main electronic device.
This further steps S15 to S17 correspond to the steps S4 and S6 as already explained in
After the list is created there is the problem that a newly connected electronic devices may not be detected. With reference to
In the next step S22 the controller 4 of the main electronic device 1 checks whether a newly connected electronic device has been detected that is whether an answer has been received after the polling message. In case that the a newly connected electronic device has been detected then in the next step S23 further information can be queried from the newly connected electronic device, e.g. the status, type and the like of the electronic device.
In the next step S24 this queried information from the newly connected electronic device is received and in the next step S25 the list of electronic devices connected to the network 7 is updated. Otherwise, if in step S22 no newly connected electronic device is detected, then the process continuous with step S25 where the list is either updated or maintained as previously.
In the next step S26 the controller 4 checks whether further polling messages are provided. In case that further polling messages are provided, the process goes back to step S21 where polling messages are sent to logical addresses. Otherwise, if in step S26 it is decided that no further polling messages are provided then the process ends with step S27. Hereby, a predefined time interval may be kept between sending the polling messages, e.g. the polling messages may only be sent every 10 seconds in order to reduce the traffic within the network 7. A value of 10s would be a compromise between the detection time of a connection or disconnection of an electronic device and the bus traffic.
It is to be noted that the above explained method can also be used to detect newly disconnected devices. In case that after sending a polling message to a previously occupied logical address no answer is received, then the main electronic device 1 will know that the respective logical address is not occupied any more and will remove the respective electronic device from the list.
The above method enables a simplified connection and disconnection of electronic devices. The user just has to connect an electronic device and it will automatically be detected and installed, e.g. all device information will be available. On the other hand the user just has to disconnect an electronic device and it will be automatically removed from the list.
The present invention with the described methods provides a wide field of possibilities how to create and constantly update a list of electronic devices connected by a network 7. The list can be shown on a graphical user interface thereby enabling the user to always keep an overview of the electronic devices and to be enabled to control the connected electronic devices.
| Number | Date | Country | Kind |
|---|---|---|---|
| 07115942 | Sep 2007 | EP | regional |
This application is a continuation application of, and claims the benefit of priority under 35 U.S.C. § 120 from, U.S. application Ser. No. 14/256,649, filed Apr. 18, 2014, which is a continuation of U.S. application Ser. No. 13/765,284, filed Feb. 12, 2013 (now U.S. Pat. No. 8,775,706), which is a continuation of U.S. application Ser. No. 13/446,653, filed Apr. 13, 2012 (now U.S. Pat. No. 8,392,639) the entire contents of each of which is incorporated herein by reference. U.S. application Ser. No. 13/446,653 (now U.S. Pat. No. 8,392,639) is a continuation of U.S. application Ser. No. 12/175,739, filed Jul. 18, 2008 (now U.S. Pat. No. 8,171,197 B2) and claims the benefit of priority under 35 U.S.C. § 119 from European Patent Application No. 07 115 942.0, filed Sep. 7, 2007.
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| Number | Date | Country | |
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| 20160087812 A1 | Mar 2016 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 14256649 | Apr 2014 | US |
| Child | 14960808 | US | |
| Parent | 13765284 | Feb 2013 | US |
| Child | 14256649 | US | |
| Parent | 12175739 | Jul 2008 | US |
| Child | 13446653 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 13446653 | Apr 2012 | US |
| Child | 13765284 | US |
