CN107977324B - Method for identifying head-mounted display device, head-mounted display device and system - Google Patents
Method for identifying head-mounted display device, head-mounted display device and system Download PDFInfo
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- CN107977324B CN107977324B CN201711404898.9A CN201711404898A CN107977324B CN 107977324 B CN107977324 B CN 107977324B CN 201711404898 A CN201711404898 A CN 201711404898A CN 107977324 B CN107977324 B CN 107977324B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/10—Program control for peripheral devices
- G06F13/102—Program control for peripheral devices where the programme performs an interfacing function, e.g. device driver
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0042—Universal serial bus [USB]
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Abstract
The invention discloses a method for identifying a head-mounted display device, the head-mounted display device and a system. The head-mounted display device comprises at least two interfaces for connecting the host computer for data transmission; the method comprises the following steps: assigning an identifier to the head mounted display device; the head-mounted display device sends the identification to the host through each interface so that the host can identify the head-mounted display device corresponding to each interface. One host can be connected with a plurality of head-mounted display devices.
Description
Technical Field
The present invention relates to the field of head-mounted display technologies, and in particular, to a method for identifying a head-mounted display device, and a head-mounted display system.
Background
The head mounted display device includes, for example, a head mounted virtual reality display device or a head mounted augmented reality display device.
One type of head-mounted display device needs to be connected with a host such as a computer, the host is responsible for main operation tasks, and the host outputs video data to the head-mounted display device for the head-mounted display device to display. Typically, such head mounted display devices also interact with the host computer through, for example, a USB interface for information other than video data.
There is a technical problem to such an application that only one host is supported to connect to one head-mounted display device. If one host is required to be connected with a plurality of head-mounted display devices, the host cannot identify the head-mounted display device corresponding to each interface.
Disclosure of Invention
The invention aims to provide a new technical scheme for identifying head-mounted display equipment so as to realize that one host is connected with a plurality of head-mounted display equipment.
According to a first aspect of the present invention, there is provided a method of identifying a head mounted display device, the head mounted display device comprising at least two interfaces for connecting a host for data transmission; the method comprises the following steps: assigning an identifier to the head mounted display device; the head-mounted display device sends the identification to the host through each interface so that the host can identify the head-mounted display device corresponding to each interface.
Optionally, the at least two interfaces include USB interfaces, and the head-mounted display device further includes a USB hub chip corresponding to the USB interfaces; the allocating the identifier to the head-mounted display device comprises: generating, by the USB hub chip, the identification.
Optionally, the at least two interfaces comprise video data interfaces; the head mounted display device sending the identification to the host through each interface comprises: writing the identifier into extended display identifier data; and sending the extended display identification data to the host through the video data interface.
According to a second aspect of the present invention, there is provided a head mounted display device, the head mounted display device comprising at least two interfaces for connecting a host for data transmission; the head mounted display device has an identification; the head-mounted display device sends the identification to the host through each interface so that the host can identify the head-mounted display device corresponding to each interface.
Optionally, the at least two interfaces include USB interfaces, the head-mounted display device further includes a USB hub chip corresponding to the USB interfaces, and the identifier is generated by the USB hub chip.
Optionally, the at least two interfaces comprise video data interfaces; the head mounted display device sending the identification to the host through each interface comprises: the head-mounted display equipment writes the identification into extended display identification data; and the head-mounted display equipment sends the extended display identification data to the host through the video data interface.
According to a third aspect of the present invention, there is provided a head mounted display system comprising a host and the head mounted display device according to the second aspect; the host comprises at least two interfaces for connecting with the head-mounted display device; and at least two interfaces of the host are used for receiving the identification sent by the head-mounted display equipment.
According to one embodiment of the disclosure, the head-mounted display device sends the same identifier to the host through each of its own interfaces, so that the host can recognize the head-mounted display device corresponding to each interface.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a flowchart of a method for identifying a head-mounted display device according to an embodiment of the present invention.
FIG. 2 is a block diagram of a head mounted display device provided by an embodiment of the invention.
Fig. 3 is a block diagram of a head mounted display device provided by another embodiment of the invention.
FIG. 4 is a block diagram of a head mounted display system provided by an embodiment of the invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Referring to the method shown in fig. 1, the following steps are included. The invention aims at a head-mounted display device which comprises at least two interfaces used for connecting a host computer for data transmission.
In step 11, an identification is assigned to the head mounted display device.
For example, a manufacturer of a head-mounted display device assigns a unique identifier to its factory head-mounted display device and writes the unique identifier into a certain storage area of the head-mounted display device.
For another example, the head-mounted display device includes a USB interface, and a USB hub chip connected to the USB interface is provided. The manufacturer of the head mounted display device may configure the USB hub chips in each head mounted display device such that each USB hub chip generates a unique identification (commonly referred to as a Container ID, 16 bytes long) after power-on.
In step 12, the head mounted display device sends the identifier to the host through each interface, so that the host can identify the head mounted display device corresponding to each interface.
Taking the second example in step 11 as an example, different head-mounted display devices send different Container IDs to the host through respective USB interfaces. Therefore, the host can correspond the USB interfaces which send the same Container ID to the host to the same head-mounted display device.
The method is also suitable for video data interfaces of the head-mounted display equipment, such as DisplayPort interfaces, HDMI interfaces, MHL interfaces and the like. Typically, the head-mounted display device sends Extended Display Identification Data (EDID) to the host through the video data interface. EDID is a standard data format containing information such as vendor information, maximum image size, color settings, vendor presets, frequency range, display name, serial number, etc. And writing the identification in the step 11 into the EDID, and sending the EDID to the host through the video data interface, so that the host can identify the unique identification corresponding to each head-mounted display device from the received EDID.
Through the method, the host can correspond the interfaces which send the same identification information to the host to the interfaces of the same head-mounted display equipment, so that the host is connected with a plurality of head-mounted display equipment.
See fig. 2 for a head mounted display device 20 for implementing the foregoing method. The head-mounted display device 20 includes at least two interfaces for connecting a host for data transmission: a first interface 21, a second interface 22, … …, an nth interface 2 n. The head mounted display device 20 has an identification, and each of the above interfaces is configured to send this identification to the host. Therefore, the host can judge that the interfaces sending the same identification correspond to the same head-mounted display equipment.
Referring to the head mounted display device shown in fig. 3, this is a specific example. The head-mounted display device 30 comprises a USB interface 31, a USB hub chip 32 connected to the USB interface, a video data interface 33, and a control module 34 connected to the video data interface 33, wherein the control module 34 is further connected to the USB hub chip 32.
The USB hub chip 32 generates a unique identification after each power-up start according to an algorithm selected by the manufacturer. When the host is connected to the head mounted display device 30 through the USB interface 31, the host reads the identifier generated by the USB hub chip 32 through the USB interface 31. The USB hub chip 32 also sends the identification to the control module 34, the control module 34 stores the identification in its memory and writes the identification into the extended display identification data, and the control module 34 sends the extended display identification data to the host through the video data interface 33.
Through the steps, the host can know that the USB interface and the video data interface which send the same identification information to the host are the interfaces of the same head-mounted display device.
Referring to fig. 4, the head mounted display system includes two head mounted display devices 20a, 20b and a host 40.
The head-mounted display device 20a comprises a first interface 21a and a second interface 22a, the head-mounted display device 20b comprises a first interface 21b and a second interface 22b, and the host 40 comprises four interfaces 41-44.
Here, the head-mounted display devices 20a and 20b are two specific examples of the head-mounted display device 20 shown in fig. 2.
Interfaces 41, 42 of host 40 receive the identification transmitted by head mounted display device 20a, and interfaces 43, 44 of host 40 receive the identification transmitted by head mounted display device 20 b. So that host 40 may know that interfaces 41, 42 correspond to one head mounted display device and interfaces 43, 44 correspond to another head mounted display device.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (7)
1. A method for identifying a head-mounted display device is characterized in that the head-mounted display device comprises at least two interfaces for connecting a host computer for data transmission; the head-mounted display equipment comprises a USB interface and a video data interface; the method comprises the following steps:
allocating an identifier based on a USB hub chip on the head-mounted display device to the head-mounted display device;
sending the identification to the host;
writing the identifier into extended display identifier data of the head-mounted display device, and sending the extended display identifier data of the head-mounted display device to the host through the video data interface;
and the host identifies the head-mounted display equipment corresponding to the USB interface and the video data interface according to the identification and the extended display identification data.
2. The method of claim 1, wherein the identification is sent to the host; the method comprises the following steps:
and sending the identification to the host through the USB interface.
3. The method of claim 1, wherein sending the identification to the host comprises:
writing the identifier into extended display identifier data;
and sending the extended display identification data to the host through the video data interface.
4. A head-mounted display device characterized in that,
the head-mounted display device comprises at least two interfaces for connecting a host computer to perform data transmission; the head-mounted display equipment comprises a USB interface and a video data interface;
the head mounted display device has an identification based on a USB hub chip thereon;
the head-mounted display equipment is used for sending the identification to the host, writing the identification into extended display identification data of the head-mounted display equipment and sending the extended display identification data of the head-mounted display equipment to the host through the video data interface;
and the host identifies the head-mounted display equipment corresponding to the USB interface and the video data interface according to the identification and the extended display identification data.
5. The apparatus of claim 4,
the head-mounted display device is further configured to send the identifier to the host through the USB interface.
6. The apparatus of claim 4,
the head-mounted display equipment is also used for writing the identification into extended display identification data;
the head-mounted display device is further configured to send the extended display identification data to the host through the video data interface.
7. A head-mounted display system comprising at least two head-mounted display devices according to any one of claims 4-6 and a host;
the host comprises at least two interfaces for connecting with the head-mounted display equipment, and the host comprises at least two USB interfaces and at least two video data interfaces;
the host is used for receiving the identification and the extended display identification data sent by at least one head-mounted display device, so that the host can identify the corresponding head-mounted display device according to the identification and the extended display identification data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711404898.9A CN107977324B (en) | 2017-12-22 | 2017-12-22 | Method for identifying head-mounted display device, head-mounted display device and system |
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| CN201711404898.9A CN107977324B (en) | 2017-12-22 | 2017-12-22 | Method for identifying head-mounted display device, head-mounted display device and system |
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| CN107977324A CN107977324A (en) | 2018-05-01 |
| CN107977324B true CN107977324B (en) | 2021-12-24 |
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| US8438659B2 (en) * | 2009-11-05 | 2013-05-07 | Vocollect, Inc. | Portable computing device and headset interface |
| CN103294196A (en) * | 2013-05-15 | 2013-09-11 | 陈创举 | Head-operated mouse |
| CN104795017B (en) * | 2015-04-24 | 2019-07-19 | 深圳市虚拟现实科技有限公司 | Display control method and head-mounted display apparatus |
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| CN107977324A (en) | 2018-05-01 |
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