Patent Publication Number: US-2018033394-A1

Title: Head-wearable displaying and powering system

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims the benefit and priority of Chinese Patent Application No. 201610619377.4 filed Jul. 29, 2016. The entire disclosure of the above application is incorporated herein by reference. 
     FIELD 
     The present disclosure relates to the technical field of virtual reality, and specifically to a head-wearable displaying and powering system. 
     BACKGROUND 
     This section provides background information related to the present disclosure which is not necessarily prior art. 
     As virtual reality technology develops, there are more and more types of virtual reality devices. A head-wearable display device used in operation with a portable terminal such as a mobile phone may provide a better user experience. The portable terminal, as a host machine, is connected to the head-wearable display device via a cable. Since the portable terminal is responsible for data processing and the screen of the head-wearable display device is responsible of image display, the portable terminal, as compared with current large-sized host machines, has a better portability and may allow the user to perform virtual reality experience whenever and wherever possible. 
     This type of head-wearable display device is usually powered in the following manners: 
     The first manner is using the battery of the portable terminal to power the head-wearable display device. However, the head-wearable display device in the prior art must be connected to the host machine via a plurality of cables, such as using at least one HDMI line to transmit audio and video data, at least one USB line to interact control data and at least one power supply line to supply power. According to such powering manner, many interfaces on the portable terminal are occupied, and many portable terminals cannot satisfy the demand of the head-wearable display device for the number of interfaces. 
     The second manner is powering the head-wearable display device by an external power supply. However, this method needs to provide an extra power supply interface or a power supply line on the head-wearable display device so that the product looks not pleasant enough. The method further increases the costs and affects portability in user&#39;s experience. 
     The third manner is providing a large-capacity battery in the head-wearable display device, and using the electrical energy stored in the battery to power the head-wearable display device. However, the placement of the battery in the head-wearable display device is apt to cause the device to generate heat, the user&#39;s experience is undesirable, and the superheat of the device or undesirable battery quality might threaten the user&#39;s personal security. 
     SUMMARY 
     This section provides a general summary of the disclosure, and is not a comprehensive disclosure of its full scope or all of its features. 
     The present disclosure provides a head-wearable displaying and powering system to solve the shortcoming of the powering manners of the head-wearable display device used in cooperation with the portable terminal in the prior art, so that the head-wearable display device, being connected to the portable terminal only via one communication interface, simultaneously acquires audio and video data signals from the portable terminal, exchanges data signals with the portable terminal and acquires the power supply from the portable terminal. The head-wearable display device does not require an additional power supply interface or power supply line, and only occupies one interface of the portable terminal, and the head-wearable display device obtains the working power supply from the portable terminal, and avoids the problem of the overheating of the product caused by the heat generation of the built-in battery. 
     To solve the above problem, the present disclosure provides a head-wearable displaying and powering system, comprising a head-wearable display device and a portable terminal; wherein the head-wearable display device is provided with one communication interface through which the head-wearable display device is connected to the portable terminal; 
     When the head-wearable display device is connected to the portable terminal, the portable terminal, through the communication interface, transmits audio and video data to the head-wearable display device, exchanges data with the head-wearable display device and provides the working power supply to the head-wearable display device. 
     The advantageous effects of the present disclosure are as follows: in the head-wearable displaying and powering system according to the present disclosure, the head-wearable display device is provided with one communication interface, and connected to the portable terminal via the interface. The head-wearable display device, through the communication interface, simultaneously acquires audio and video data from the portable terminal, exchanges data with the portable terminal and acquires the working power supply from the portable terminal. The head-wearable display device does not require an additional power supply interface or power supply line, makes the product more pleasant and reduces the costs. The head-wearable display device may operate normally after being connected to the portable terminal only via one communication interface, needn&#39;t occupy too many communication interfaces on the portable terminal and does not limit the application of the portable terminal. As the head-wearable display device acquires the working power supply mainly from the portable terminal, the problem of the overheating of the product caused by the heat generation of the built-in battery is avoided, the safety of the device is enhanced, and the user&#39;s experience is better. 
    
    
     
       DRAWINGS 
       The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure. 
         FIG. 1  is a functional block diagram of a head-wearable displaying and powering system according to a first embodiment of the present disclosure; 
         FIG. 2  is functional block diagram of a head-wearable displaying and powering system according to a second embodiment of the present disclosure; 
         FIG. 3  is a functional block diagram of a wireless charging device in the head-wearable displaying and powering system according to an embodiment of the present disclosure; 
         FIG. 4  is a structural schematic view of a wireless charging device in the head-wearable displaying and powering system according to an embodiment of the present disclosure; 
         FIG. 5  is a view showing appearance of a wireless charging device in the head-wearable displaying and powering system according to an embodiment of the present disclosure; 
         FIG. 6  is a structural schematic diagram of the head-wearable displaying and powering system according to an embodiment of the present disclosure. 
     
    
    
     Corresponding reference numerals indicate corresponding parts or features throughout the several views of the drawings. 
     DETAILED DESCRIPTION 
     Example embodiments will now be described more fully with reference to the accompanying drawings. 
     A design idea of the present disclosure is as follows: in view of the shortcoming of the powering manners of the head-wearable display device used in cooperation with the portable terminal in the prior art, the present disclosure provides a head-wearable displaying and powering system. The head-wearable display device is provided with one communication interface, and connected to the portable terminal via the interface. The head-wearable display device, through the communication interface, simultaneously acquires audio and video data from the portable terminal, exchanges data with the portable terminal and acquires the working power supply from the portable terminal. The head-wearable display device does not require an additional power supply interface or power supply line, makes the product more pleasant and reduces the costs. The head-wearable display device may operate normally after being connected to the portable terminal only via one communication interface, needn&#39;t occupy too many communication interfaces on the portable terminal and does not limit the application of the portable terminal. As the head-wearable display device acquires the working power supply mainly from the portable terminal, the problem of the overheating of the product caused by the heat generation of the built-in battery is avoided, the safety of the device is enhanced, and the user&#39;s experience is better. Furthermore, the present disclosure may further provide a wireless charging device, which powers the portable terminal in a wireless manner, prolongs the duration of the cooperative use of the portable terminal and the head-wearable display device, and does not occupy an interface of the portable terminal. 
     Embodiment 1 
       FIG. 1  is a functional block diagram of a head-wearable displaying and powering system according to a first embodiment of the present disclosure. As shown in  FIG. 1 , the head-wearable displaying and powering system according to the present embodiment comprises a head-wearable display device  100  and a portable terminal  300 . The head-wearable display device is provided with one communication interface  101  which may be connected to a communication interface  301  of the portable terminal  300  via a cable  200  to achieve connection of the head-wearable display device  100  and the portable terminal  300 . Through this connection, the portable terminal  300  may simultaneously transmit audio and video data to the head-wearable display device  100 , exchange data with the head-wearable display device  100  and provide the working power supply to the head-wearable display device  100 . 
     In the present embodiment, the communication interface  101  disposed on the head-wearable display device  100  is a USB Type-C interface, and the portable terminal  300  is a smart mobile phone or flat panel computer having a USB Type-C interface. The communication interface  101  may be a cabled USB Type-C male plug and may be inserted into a USB Type-C female receptacle disposed on the portable terminal  300 . 
     The USB Type-C interface standard is one type of USB 3.1 standard, possesses four pairs of differential signals, enables full duplex communication and supports 5V/20 A at most. USB Type-C may convert some or all differential signal channels therein to Displayport signal channels. If there are still remaining differential signals, they may be used for USB data transmission. Through the USB Type-C interface, the portable terminal  300  may supply power to the head-wearable display device  100  with a larger current, and the USB Type-C interface may transmit a Displayport audio and video signal and USB data signal simultaneously. A signal converting module in the head-wearable display device  100  may convert the received Displayport signal into a video signal and an audio signal needed by a LCD display screen  103  and an audio jack  105 . An audio decoding chip  104  is used to decode the audio signal, and a microcontroller  106  is responsible for USB signal interaction between the head-wearable device  100  and the portable terminal  300 , e.g., receives a control command sent by the portable terminal  300 , and sends data acquired by a sensor  107  to the portable terminal  300 . 
     The head-wearable display device  100  acquires audio and video data from the portable terminal  300 , exchanges data with the portable terminal and acquires the working power supply from the portable terminal simultaneously through one USB Type-C interface. The head-wearable display device does not require an additional power supply interface or power supply line, makes the product more pleasant and reduces the costs. As the head-wearable display device acquires the working power supply mainly from the portable terminal, the problem of the overheating of the product caused by the heat generation of the built-in battery is avoided, the safety of the device is enhanced, and the user&#39;s experience is better. 
     Embodiment 2 
     The present embodiment aims to further prolong the duration of the cooperative use of the head-wearable display device and the portable terminal.  FIG. 2  is functional block diagram of a head-wearable displaying and powering system according to a second embodiment of the present disclosure. As shown in  FIG. 2 , in the head-wearable displaying and powering system according to the present embodiment, the head-wearable display device  210  is still, as in the first embodiment, connected to one communication interface  221  disposed on the portable terminal  220  through a communication interface  211  to implement connection of the head-wearable display device  210  and the portable terminal  220 . 
     The difference is that a wireless charging receiving module  222  is disposed in the portable terminal  220 . The head-wearable displaying and powering system according to the present embodiment further comprises a wireless powering device  230 . The wireless powering device  230  may power the portable terminal  220  to thereby prolong the duration of the cooperative use of the head-wearable display device  210  and the portable terminal  220 . 
       FIG. 3  is a functional block diagram of a wireless charging device in the head-wearable displaying and powering system according to an embodiment of the present disclosure, and  FIG. 4  is a structural schematic view of a wireless charging device in the head-wearable displaying and powering system according to an embodiment of the present disclosure. In conjunction with  FIG. 3  and  FIG. 4 , a wireless powering device  310  comprises a housing consisting of an upper housing  410  and a lower housing  420 , a PCB  430  and a first built-in battery  311  are disposed in the housing, the PCB  430  is provided with a first charging management chip  312  and a charging interface  313 , and the charging interface  313  is exposed out of the housing to connect with an external power supply  320 . A wireless charging transmitting module  314  is further disposed in the housing and used to power the portable terminal provided with the wireless charging receiving module. 
     Preferably, as shown in  FIG. 4 , the wireless charging transmitting module  314  is disposed at a location above the PCB  430  and adjacent to the upper housing  410 . When the wireless charging device is used to power the portable terminal, the portable terminal is placed on an outer surface of the upper housing  410  of the wireless charging device, the wireless charging transmitting module  314  is disposed at a location adjacent to the upper housing  410  so that the wireless charging transmitting module  314  is closer to the wireless charging receiving module in the portable terminal and less obstacles exist therebetween, the signal transmitted by the wireless charging transmitting module  314  may be more received by the wireless charging receiving module, and the electrical energy loss while the wireless powering device  310  charges the portable terminal is reduced. 
     Preferably, still as shown in  FIG. 4 , the first built-in battery  311  is disposed at a location below the PCB  430  and adjacent to the lower housing  420 . The heat generated while the first built-in battery  311  is working may be dissipated to the external of the wireless powering device  310  via the lower housing  420  as quickly as possible so that the wireless powering device  310  exhibits a better heat dissipation performance. Furthermore, when the wireless powering device  310  is working, the distance of the first built-in battery  311  away from the portable terminal is further, which prevents a lot of the heat generated by the first built-in battery  311  from being transferred to the portable terminal and affecting the normal operation of the portable terminal. 
     In the present embodiment, while the charging interface  313  is not connected to an external power supply  320 , the first charging management chip  312  controls the first built-in battery  311  to power the wireless charging transmitting module  314 , namely, the electrical energy provided by the first built-in battery  311  is used to power the portable terminal provided with the wireless charging receiving module. 
     While the charging interface  313  is connected to an external power supply  320 , the first charging management chip  312  controls the external power supply  320  to directly power the wireless charging transmitting module  314 , whereupon the electrical energy of the first built-in battery  311  is not consumed any longer and the service life of the first built-in battery  311  is prolonged. Meanwhile, the first charging management chip  312  further uses the electrical energy provided by the external power supply  320  to charge the first built-in battery  311  and prolong the continued use duration of the first built-in battery  311 . 
       FIG. 5  is a view showing appearance of a wireless charging device in the head-wearable displaying and powering system according to an embodiment of the present disclosure, and  FIG. 6  is a structural schematic diagram of the head-wearable displaying and powering system according to an embodiment of the present disclosure. In conjunction with  FIG. 5  and  FIG. 6 , in the preferred embodiments of the present disclosure, the wireless powering device is a battery back clip, the portable terminal is a device such as a mobile phone or flat panel computer supporting the wireless charging function, and a wireless charging receiving device is disposed in the portable terminal. The wireless powering device has a shape matching the portable terminal. An edge of the upper housing of the wireless powering device is provided with a fixing structure  310  which may fix the wireless powering device to a back side of the portable terminal so that the wireless powering device is portable. Furthermore, during movement, the upper housing of the wireless powering device is in close contact with the back side of the portable terminal forever, and the wireless charging receiving module may better receive a signal transmitted by the wireless charging transmitting module and reduce the electrical energy loss while the wireless powering device supplies power to the portable terminal. The wireless powering device according to the present embodiment has an external shape like a protective housing, functions to power the portable terminal as well as protect the housing, and may protect the portable terminal such as a mobile phone or a flat panel computer. That is to say, the powering device serves as the protective housing and the external battery of the portable terminal. 
     In addition, an end face of the housing of the wireless powering device may be provided with a Micro USB type charging interface through which the external power supply is connected. The electrical energy provided by the external power supply is used to charge the battery of the wireless powering device, and the electrical energy provided by the external power supply is used to, via the wireless charging transmitting module, directly power the portable terminal provided with the wireless charging receiving module to further prolong the duration of the cooperative use of the portable terminal and the head-wearable display device. 
     Preferably, still as shown in  FIG. 1 , the head-wearable display device  100  is further provided with a power supply module  108 . When the head-wearable display device  100  is connected to the communication interface  301  of the portable terminal  300  via the communication interface  101 , the power supply module  108  obtains the working power supply from the portable terminal  300  to power the modules in the head-wearable display device  100 . 
     Further preferably, in the head-wearable display device  100  are further provided a second charging management chip  109  and a second built-in battery  110 . The second charging management chip  109  is connected with the communication interface  101 , the second built-in battery  110  and the power supply module  108 . 
     When the head-wearable display device  100  is connected with the communication interface  301  of the portable terminal  300  via the communication interface  101 , the second charging management chip  109  takes power from the portable terminal  300  to charge the second built-in battery  110 . 
     When the head-wearable display device is not connected with the communication interface  301  of the portable terminal  300  via the communication interface  101 , the second charging management chip  109  takes power from the second built-in battery  110  to power the power supply module  108  so that the head-wearable display device has a self-powering capability and may prolong, to a certain degree, the duration of the cooperative use of the head-wearable display device and the portable terminal. The powering system according to the present disclosure mainly uses the portable terminal to power the head-wearable display device. Usually, the second built-in battery  110  has a small capacity, which is mainly intended to prevent the accidental disconnection between the head-wearable display device and the powering device and prevent device malfunction that might be caused by sudden power failure of the head-wearable display device. Therefore, the second built-in battery  110  does not cause the problem that the superheat of the device affects the user&#39;s experience. 
     To conclude, in the head-wearable displaying and powering system according to the present disclosure, the head-wearable display device is provided with one communication interface, and connected to the portable terminal via the interface. The head-wearable display device, through the communication interface, simultaneously acquires audio and video data from the portable terminal, exchanges data with the portable terminal and acquires the working power supply from the portable terminal. The head-wearable display device does not require an additional power supply interface or power supply line, makes the product more pleasant and reduces the costs. The head-wearable display device may operate normally after being connected to the portable terminal only via one communication interface, needn&#39;t occupy too many communication interfaces on the portable terminal and does not limit the application of the portable terminal. As the head-wearable display device acquires the working power supply mainly from the portable terminal, the problem of the overheating of the product caused by the heat generation of the built-in battery is avoided, the safety of the device is enhanced, and the user&#39;s experience is better. 
     Secondly, the head-wearable displaying and powering system according to the present disclosure further provides a wireless charging device, which powers the portable terminal in which the wireless charging receiving module is built, and further prolongs the duration of the cooperative use of the portable terminal and the head-wearable display device. Since power is supplied in a wireless manner, the wireless powering device does not occupy an interface of the portable terminal, does not affect the cooperative use of the head-wearable display device and the portable terminal, and does not limit the application of the portable terminal. 
     Finally, the wireless powering device is a battery back clip which is shaped to match the portable terminal, and the powering device may be fixed to the back side of the portable terminal through a fixing structure disposed on edges of the upper housing of the powering device, thereby enhancing the overall portability of the head-wearable displaying and powering system. 
     The foregoing description of the embodiments has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, but, where applicable, are interchangeable and can be used in a selected embodiment, even if not specifically shown or described. The same may also be varied in many ways. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.