CN104914580A - Head-mounted display - Google Patents
Head-mounted display Download PDFInfo
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- CN104914580A CN104914580A CN201510205028.3A CN201510205028A CN104914580A CN 104914580 A CN104914580 A CN 104914580A CN 201510205028 A CN201510205028 A CN 201510205028A CN 104914580 A CN104914580 A CN 104914580A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/014—Head-up displays characterised by optical features comprising information/image processing systems
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a head-mounted display. The head-mounted display comprises a first conversion chip, a first processing chip, a second conversion chip and a second processing chip; the first conversion chip is used to convert a video signal in input audio and video source signals into an RGB signal and output the RGB signal to the first processing chip, and is used to convert an audio signal in the input audio and video source signals into an I2S signal and output the I2S signal to the second processing chip; the first processing chip is used to perform optical processing on the input RGB signal and output the processed RGB signal to the second conversion chip; the second conversion chip is used to convert the input RGB signal after the optical processing into a preset interface signal and output the preset interface signal to a display screen interface of the head-mounted display; and the second processing chip is used to perform decoding processing on the input I2S signal and output the processed I2S signal to an earphone interface of the head-mounted display According to the scheme, the audio and video signals can respectively be adapted to the display screen interface and the earphone interface of the head-mounted display and then be output, and perfect visual experience and perfect auditory experience are provided for a user.
Description
Technical field
The present invention relates to visual device technical field, particularly relate to a kind of head mounted display.
Background technology
Along with the development of science and technology, head mounted display is civil nature gradually, for more and more people provides vision and the auditory effect of high-quality.In prior art, the audio frequency and video processing scheme of head mounted display mainly comprises two kinds: the first scheme is directly put on the front-end bracket of head mounted display mobile phone or other audio and video playing terminals, the audio frequency and video that other audio and video playing terminals export directly are supplied to user, and more representational have Samsung Gear VR, storm wind witch mirror etc.; Program Problems existing is: head-mounted display self does not have the ability processed audio frequency and video, and function is simple, and the result of broadcast of audio frequency and video is limited to the treatment effect of other audio and video playing terminals, in enforcement and development, have significant limitation.First scheme is that the AP chip that head mounted display needs the box of a processor to arrange in pairs or groups special processes audio-video source signal; Although the program makes head mounted display have audio frequency and video processing capacity, due to adding of special AP chip, cause head mounted display overall architecture huge, portability is poor, does not meet user's request.
Summary of the invention
In view of the above problems, the invention provides a kind of head mounted display, to solve the problem or to solve the problem at least in part.
The invention provides a kind of head mounted display, this head mounted display comprises:
First conversion chip, for the vision signal in the audio-video source signal of input is converted to rgb signal, and exports to the first process chip by this rgb signal; And for the sound signal in the audio-video source signal of input is converted to I2S signal, and this I2S signal is exported to the second process chip;
First process chip, for being optimized process to the rgb signal of input, and exports to the second conversion chip by the rgb signal after optimization process;
Second conversion chip, for the rgb signal after the optimization process of input is converted to preset interface signal, and exports to the display screen interface of head mounted display by preset interface signal;
Second process chip, for carrying out decoding process to the I2S signal of input, and exports to the earphone interface of head mounted display by the signal after decoding process.
Alternatively, the first conversion chip, for being converted to rgb signal by the vision signal in the MHL signal of input or HDMI signal; And the sound signal in the MHL signal of input or HDMI signal is converted to I2S signal.
Alternatively, the first process chip is fpga chip, for being out of shape the rgb signal of input and eliminating the algorithm process of distortion.
Alternatively, the second conversion chip, for being converted to MIPI signal, EDP signal or LVDS signal by the rgb signal after the optimization process of input.
Alternatively, the second process chip is CODEC chip.
Alternatively, this head mounted display comprises further:
Micro-control unit MCU, for carrying out initial configuration to the first conversion chip, the first process chip, the second conversion chip and the second process chip; And for carrying out data transmission by the data transmission interface of head mounted display and external unit.
Alternatively, this head mounted display comprises further:
Power Management Unit, receives Power supply for the power input interface by head mounted display, and carries out power supply management to micro-control unit MCU, the first conversion chip, the first process chip, the second conversion chip and the second process chip.
Alternatively, this head mounted display comprises two external interfaces: first interface and the second interface;
First interface as media signal input interface, for receiving audio-video source signal; Wherein audio-video source signal is MHL signal or HDMI signal;
Second interface, as data transmission interface and power input interface, for receiving external device data transmission, carries out the upgrading of head mounted display; And for receiving Power supply.
Alternatively, this head mounted display comprises further: internal storage location;
Internal storage location, for storing the ephemeral data of the first process chip in optimization process;
Micro-control unit MCU, is further used for carrying out initial configuration to internal storage location;
Power Management Unit, is further used for carrying out power supply management to internal storage location.
Alternatively, internal storage location is DDR3L memory bar.
Alternatively, this head mounted display comprises further: LED and/or button;
Micro-control unit MCU, is further used for control signal to export to LED;
Button, for being input to control signal in micro-control unit MCU.
From the above, technical scheme provided by the invention is cooperatively interacted by head mounted display each several part, complete the translation process to audio-video source signal, make vision signal and sound signal can adapt to the display screen interface of head mounted display respectively and earphone interface exports, the audio frequency and video processing capacity integrated level overcoming head mounted display in prior art is not high, the problem of framework complexity, framework is simple, can directly to arrange in pairs or groups other-end equipment use, without the need to installing other application, for user provides more perfect vision and audio experience on the basis of portability ensureing head-mounted display.
Accompanying drawing explanation
Fig. 1 shows a kind of according to an embodiment of the invention schematic diagram of head mounted display;
Fig. 2 shows the organization chart of head mounted display in accordance with another embodiment of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Fig. 1 shows a kind of according to an embodiment of the invention schematic diagram of head mounted display.As shown in Figure 1, this head mounted display 100 comprises:
First conversion chip 110, is converted to RGB (RGB aberration interface) signal for the vision signal in the audio-video source signal that outside audio-video source equipment inputted, and this rgb signal is exported to the first process chip 120; And for the sound signal in the audio-video source signal of input is converted to I2S (Inter-IC Sound, bus) signal, and this I2S signal is exported to the second process chip 140.
First process chip 120, for being optimized process to the rgb signal of input, and exports to the second conversion chip 130 by the rgb signal after optimization process.
Second conversion chip 130, for the rgb signal after the optimization process of input is converted to preset interface signal, and exports to the display screen interface of head mounted display by this preset interface signal.
Wherein, preset interface signal is the signal of the display screen interface adapting to head mounted display, in an embodiment of the present invention, rgb signal after the optimization process of input can be converted to MIPI (Mobile Industry Processor Interface by the second conversion chip 130, mobile Industry Processor Interface) signal, EDP (Embedded Display Port, embedded display interface) signal or LVDS (Low VoltageDifferential Signaling, technology of Low Voltage Differential Signaling interface) signal.
Second process chip 140, for carrying out decoding process to the I2S signal of input, and exports to the earphone interface of head mounted display by the signal after decoding process.
Visible, head mounted display cooperatively interacting by each several part shown in Fig. 1, complete the translation process to audio-video source signal, make vision signal and sound signal can adapt to the display screen interface of head mounted display respectively and earphone interface exports, the audio frequency and video processing capacity integrated level overcoming head mounted display in prior art is not high, the problem of framework complexity, framework is simple, can directly to arrange in pairs or groups other-end equipment use, without the need to installing other application, for user provides more perfect vision and audio experience on the basis of portability ensureing head-mounted display.
Fig. 2 shows the organization chart of head mounted display in accordance with another embodiment of the present invention.As shown in Figure 2, this head mounted display comprises: MHL to RGB (MHL signal turns rgb signal) conversion chip, FPGA (Field-Programmable Gate Array, i.e. field programmable gate array) chip, DDR3L (Double Data Rate 3-Low Voltage, low-voltage version third generation double-speed random access memory) memory bar, RGB to MIPI (rgb signal turns MIPI signal) conversion chip, LCD display, CODEC (Coder-Decoder, encoding and decoding) chip, earphone, micro-control unit MCU, LED and Power Management Unit PMIC (Power Management IC, power management integrated circuit).In addition, Fig. 2 also show and carries out mutual external unit with head mounted display: audio-video source equipment, PC and power supply adaptor.
In the present embodiment, audio-video source signal is input in the MHL to RGB conversion chip of head mounted display by the media signal input interface of head mounted display by outside audio-video source equipment, under normal circumstances, audio-video source signal is MHL (Mobile High-Definition Link, mobile terminal high-definition audio and video standard interface) signal or HDMI (High Definition Multimedia Interface, HDMI (High Definition Multimedia Interface)) signal.
For the vision signal in the MHL signal inputted or HDMI signal, the vision signal in the MHL signal of input or HDMI signal is converted to rgb signal by MHL to RGB conversion chip, and this rgb signal is exported to fpga chip; The rgb signal of fpga chip to input is out of shape and eliminates the algorithm process of distortion, and the rgb signal after optimization process is exported to RGB to MIPI conversion chip; Wherein, DDR3L memory bar, for storing the ephemeral data of fpga chip in optimization process, from Fig. 2, have employed two DDR3L memory bars in the present embodiment, and each DDR3L memory bar memory size is 2Gb; Rgb signal after the optimization process of input is converted to MIPI signal by RGB to MIPI conversion chip, and this MIPI signal is exported to the LCD display interface of head mounted display; Wherein, because the transmission upper limit of single channel MIPI signal is only 1G bandwidth, therefore when the display screen driving resolution at more than 1440p, need the rgb signal after the optimization process exported by fpga chip to be divided into two-way to be input in two RGB to MIPI conversion chips, so latter two RGB to MIPI conversion chip exports two-way MIPI signal again to LCD display interface driver LCD display display translation.
For the sound signal in the MHL signal inputted or HDMI signal, the sound signal in the MHL signal of input or HDMI signal is converted to I2S signal by MHL to RGB conversion chip, and this I2S signal is exported to CODEC chip; The I2S signal of CODEC chip to input carries out decoding process, and the signal after decoding process is exported to the earphone interface of head mounted display.
In the present embodiment, each chip that the micro-control unit MCU of head mounted display is used in head-mounted display carries out initial configuration, such as, illustrate in Fig. 2 that micro-control unit MCU is by I2C (Inter-Integrated Circuit, bus) signal and CODEC chip carry out alternately, being configured it; The IO interface of micro-control unit MCU can also connect LED, for control signal (GPIO signal) is exported to LED, undertaken alternately by control LED and user, further, in other embodiments of the invention, head mounted display also comprises as other man-machine interaction units such as buttons, makes user can by controlling the micro-control unit MCU in the control head-mounted display of button; Micro-control unit MCU is also for carrying out data transmission by the data transmission interface of head mounted display and the PC of head mounted display outside, and such as micro-control unit MCU downloads from PC, is used for carrying out the upgrading of head mounted display.
In addition, also comprise Power Management Unit PMIC in the head mounted display shown in Fig. 2, for being received the power supply of external power adapter by the power input interface of head mounted display, and each chip in head-mounted display carries out power supply management.
In one embodiment of the invention, the data transmission interface of head mounted display and power input interface can be same interfaces, and as USB interface, namely head mounted display carries out data transmission and power source charges by this USB interface and external unit.
In sum, technical scheme provided by the invention achieves the translation process to audio-video source signal, make vision signal and sound signal can adapt to the display screen interface of head mounted display respectively and earphone interface exports, overcome the problem that audio frequency and video processing capacity integrated level is not high, framework is complicated of head mounted display in prior art, framework is simple, can directly to arrange in pairs or groups other-end equipment use, without the need to installing other application, for user provides more perfect vision and audio experience on the basis of portability ensureing head-mounted display.
The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., be all included in protection scope of the present invention.
Claims (10)
1. a head mounted display, is characterized in that, this head mounted display comprises:
First conversion chip, for the vision signal in the audio-video source signal of input is converted to rgb signal, and exports to the first process chip by this rgb signal; And for the sound signal in the audio-video source signal of input is converted to I2S signal, and this I2S signal is exported to the second process chip;
First process chip, for being optimized process to the rgb signal of input, and exports to the second conversion chip by the rgb signal after optimization process;
Second conversion chip, for the rgb signal after the optimization process of input is converted to preset interface signal, and exports to the display screen interface of head mounted display by this preset interface signal;
Second process chip, for carrying out decoding process to the I2S signal of input, and exports to the earphone interface of head mounted display by the signal after decoding process.
2. head mounted display as claimed in claim 1, is characterized in that,
First conversion chip, for being converted to rgb signal by the vision signal in the MHL signal of input or HDMI signal; And the sound signal in the MHL signal of input or HDMI signal is converted to I2S signal.
3. head mounted display as claimed in claim 1, is characterized in that,
First process chip is fpga chip, for being out of shape the rgb signal of input and eliminating the algorithm process of distortion.
4. head mounted display as claimed in claim 1, is characterized in that,
Second conversion chip, for being converted to MIPI signal, EDP signal or LVDS signal by the rgb signal after the optimization process of input.
5. head mounted display as claimed in claim 1, it is characterized in that, the second process chip is CODEC chip.
6. the head mounted display according to any one of claim 1-5, is characterized in that, this head mounted display comprises further:
Micro-control unit MCU, for carrying out initial configuration to the first conversion chip, the first process chip, the second conversion chip and the second process chip; And for carrying out data transmission by the data transmission interface of head mounted display and external unit.
7. head mounted display as claimed in claim 6, it is characterized in that, this head mounted display comprises further:
Power Management Unit, receives Power supply for the power input interface by head mounted display, and carries out power supply management to micro-control unit MCU, the first conversion chip, the first process chip, the second conversion chip and the second process chip.
8. head mounted display as claimed in claim 7, it is characterized in that, this head mounted display comprises two external interfaces: first interface and the second interface;
First interface as media signal input interface, for receiving audio-video source signal; Wherein audio-video source signal is MHL signal or HDMI signal;
Second interface, as data transmission interface and power input interface, for receiving external device data transmission, carries out the upgrading of head mounted display; And for receiving Power supply.
9. head mounted display as claimed in claim 8, it is characterized in that, this head mounted display comprises further: internal storage location, and this internal storage location is specially DDR3L memory bar;
Internal storage location, for storing the ephemeral data of the first process chip in optimization process;
Micro-control unit MCU, is further used for carrying out initial configuration to internal storage location;
Power Management Unit, is further used for carrying out power supply management to internal storage location.
10. head mounted display as claimed in claim 9, it is characterized in that, this head mounted display comprises further: LED and/or button;
Micro-control unit MCU, is further used for control signal to export to LED;
Button, for being input to control signal in micro-control unit MCU.
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| CN201510205028.3A CN104914580B (en) | 2015-04-24 | 2015-04-24 | A kind of head-mounted display |
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| CN201510205028.3A CN104914580B (en) | 2015-04-24 | 2015-04-24 | A kind of head-mounted display |
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| CN104914580B CN104914580B (en) | 2018-04-27 |
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| CN106603953A (en) * | 2016-09-28 | 2017-04-26 | 杭州青杉奇勋科技有限公司 | Video display method and video display system of converting HDMI interface into MIPI interface |
| WO2017113313A1 (en) * | 2015-12-31 | 2017-07-06 | 深圳市柔宇科技有限公司 | Head-mounted display device and head-mounted display system |
| CN107407809A (en) * | 2016-01-26 | 2017-11-28 | 深圳市柔宇科技有限公司 | Headset equipment, Headphone device and headset equipment separation control method |
| CN108446089A (en) * | 2018-03-22 | 2018-08-24 | 京东方科技集团股份有限公司 | Display methods, device and the display of data |
| CN111405271A (en) * | 2020-03-25 | 2020-07-10 | 中晨科技（深圳）有限公司 | Micro display driving system |
| CN111464848A (en) * | 2020-03-13 | 2020-07-28 | 深圳市峰泳科技有限公司 | Double-display synchronous display device, head-mounted display device, VR/AR and intelligent glasses |
| CN112449229A (en) * | 2019-09-04 | 2021-03-05 | 海信视像科技股份有限公司 | Sound and picture synchronous processing method and display equipment |
| CN115494648A (en) * | 2022-10-21 | 2022-12-20 | 广东高云半导体科技股份有限公司 | Head-up display device |
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