Abstract:
The invention relates to headphones which can facilitate the transfer of electrical power from the headphones&#39; internal power source to other devices. A pair of headphones can connect to a device through a modified cable. The modified cable triggers the transfer of electrical power to the device. A pair headphones may have a modified port which, when connected to the device through a non-modified or regular cable, causes the transfer of power from the headphones. A power management component connected to the internal power source of the headphones helps control or regulate the transfer of power transfer to and from the headphones.

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
       [0001]    This application claims the benefit of and priority to U.S. patent application Ser. No. 13/760,765, filed on Feb. 6, 2013, the entire contents of which are incorporated by reference herein. 
     
    
     FIELD 
       [0002]    The present disclosure generally relates to headphones which transfer electrical power from the headphones to an external device. 
       SUMMARY 
       [0003]    In an exemplary embodiment, a pair of headphones may include a left speaker unit including a left speaker for providing audio output; a right speaker unit including a right speaker for providing audio output; an adjustable band configured to hold the left speaker unit and the right speaker unit; a port located on one of the speaker units, the port operatively connected to an internal power source of the headphones; and a power management component for regulating the internal power source of the headphones so that when a first cable is connected to the port and to an external device electrical power is transferred to the external device, and when a power adaptor is connected to the port and to a wall outlet, the internal power source is being charged. 
         [0004]    In some exemplary embodiments, the data pin of the connecting end of the first cable may be electrically grounded. 
         [0005]    In some exemplary embodiments, the first cable may also include a removable adaptor at the end of the first cable connecting to the port, the connector electrically grounding a data pin of the first cable. 
         [0006]    In some exemplary embodiments, the power management component of the headphones may determines the amount of power in the internal power source and prevents the transfer of power from the internal power source if the amount of power is less than or equal to a predefined threshold power level. 
         [0007]    In some exemplary embodiments, the integral power source may be one or more rechargeable batteries. 
         [0008]    In some exemplary embodiments, the power management component may be a power manager integrated circuit. For example, the integrated circuit may be a Linear Chip LTC4160. 
         [0009]    In some exemplary embodiments, port may be a USB type port and the first cable may be a USB type cable. For example, the USB port may be a micro USB port and the USB type cable can have at least one micro USB type connector. 
         [0010]    In some exemplary embodiments, the power adaptor may include a removable cable. 
         [0011]    In exemplary embodiments, a pair of headphones may include a left speaker unit including a left speaker for providing audio output; a right speaker unit including a right speaker for providing audio output; an adjustable band configured to hold the left speaker unit and the right speaker unit; a first port located on one of the speaker units, the first port electrically connected to an internal power source of the headphones; a second port located one of the speaker unit, the second port electrically connected to the internal power source of the headphones; and a power management component for regulating the internal power source of the headphones so that when a first cable is connected to the first port and to an external device electrical power is transferred to the external device, and when a power adaptor is connected to the second port and to a wall outlet, the internal power source is being charged. 
         [0012]    In some exemplary embodiments, one of the ports may be a USB port and the other port may be a micro USB port. 
     
    
     
       DESCRIPTION OF THE DRAWINGS 
         [0013]    The features and advantages of the present disclosure will be more fully understood with reference to the following, detailed description when taken in conjunction with the accompanying figures, wherein: 
           [0014]      FIG. 1  illustrates a pair of headphones connected to an external device according to an exemplary embodiment of the present invention. 
           [0015]      FIG. 2  illustrates a pair of headphones according to an exemplary embodiment of the present invention. 
           [0016]      FIG. 3  illustrates cables used for transferring power according to an exemplary embodiment of the present invention. 
           [0017]      FIG. 4  illustrates a pair of headphones according to an exemplary embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION 
       [0018]    The present disclosure generally relates to methods for transferring electrical power from a pair of headphones to an external device. The drawing figures are not necessarily drawn to scale and certain figures may be shown in exaggerated or generalized form in the interest of clarity and conciseness. 
         [0019]      FIG. 1  illustrates a diagram illustrating a pair of headphones connected to an external device, according to an exemplary embodiment. The headphones  10  can include one or more batteries, which can be disposable or rechargeable. In embodiments, the headphones may also include other features or functionalities, including amplifiers, Bluetooth, noise cancellation circuitry, a power management device, etc. The headphones  10 , are illustrated as being full size headphones, but any other battery powered headphones may be used herein. 
         [0020]    Referring to  FIG. 1 , the headphones  10  connect to an external device  50  via a communication port  30  in accordance with exemplary embodiments. The external device may be any device, such as, for example mobile phones, smartphones (e.g., iPhone®, Android® devices, Blackberry® devices, Windows, etc.), tablets devices (e.g., iPad®, iPad® Mini, Android® tablet, Surface™, ChromeBook, etc.), laptops, desktops, portable music players (e.g., iPod, iPodTouch, etc.), etc. 
         [0021]    In embodiments, the headphones  10  can communicate data, and/or exchange electrical power via the port  30 . As shown, the port  30  is integrated with a speaker  120 . However this is not necessary as the port  30  can be located in any suitable location on the headphones. 
         [0022]      FIG. 2  illustrates, according to an exemplary embodiment, a pair of headphones  100  include a micro USB port  130  which can be used to charge the headphones (using a standard charge cable) and to charge other external devices. As shown, the port  130  is integrated in one of the speakers  120 . The port  30 , can be electrically directly or indirectly connected to the batteries of the headphones. In exemplary embodiments, other ports can be used in lieu of a micro USB port or other USB port as discussed herein. 
         [0023]    In exemplary embodiments, the flow of electrical power from the headphones  100  to an external device is facilitated or accomplished through the use of a specialized or modified cable.  FIG. 2 , shows, according to an exemplary embodiment, a modified USB cable  200 . The cable  200  has a connector  210  for connecting to the headphones and an external connector  220  for connecting to an external device. In some embodiments, the connectors  210 ,  220  may be a micro USB type connector (because the headphones have a micro USB port), but cables with other types of connectors may be used in accordance with the embodiments described herein. In embodiments, the cable  200  may be modified such that at least one data pin of the connector is grounded. Other modifications can be made to the cable to enable a power management component (as discussed below) to distinguish between a charging cable and a discharging cable. The connection of cable to the headphones and to an external device causes electrical power to be transferred from the headphones to the electrical device. 
         [0024]    In some exemplary embodiments, instead of using a modified USB cable to facilitate the transfer of power to an external device, a regular cable, (e.g., a standard USB type cable and the like) with an adaptor can be used. For example, referring to  FIG. 3 , a standard USB type cable  250  with regular male USB connectors  260 ,  270  may connect to the headphones via the adaptor  280 . For example, the adaptor  280  has a male USB connector and can receive or attach to another male USB connector, such as connector  260 . 
         [0025]    In embodiments, the wires or connectors of the adaptor  280  can be modified or wired in order to effectively ground the data pin of the cable  250 , in order to cause the headphones to provide electrical power to the USB device. Thus, in order to transfer power from the headphones, the adaptor  280  can be arranged to connect to the USB port  130  of the headphones at one end and connect to one of the connectors  260 ,  270  of the cable  250  at the other end. The connector of the cable not attached to the adaptor  280  connects to the external device. Other modifications can be made to the adaptor to enable the power management component (as discussed below) to distinguish between a charging operation and a discharging operation. 
         [0026]    In exemplary embodiments, in order facilitate power from headphones to an external device, the headphones may include a modified port. For example, referring to  FIG. 4 , the headphones  300  have a micro USB port  330  built into speaker  320  and a regular USB port  335  built into speaker  321 . The ports  330 ,  335  do not necessarily have to be incorporated on separate speaker or speaker unit. Further, at least one of the ports  330 ,  335  can be modified so as to effectively modify a data pin of a connecting cable. Other modifications can be made to the ports to enable a power management component (as discussed below) to distinguish between a charging port and a discharging port. Therefore when a cable connects to the modified port and to an external device, electrical power transfers from the headphones to the external device. The unmodified port can be used in accordance with other functions of the headphones, e.g., charge the headphone, update firmware, etc. 
         [0027]    In exemplary embodiments, the headphones described herein can further include a power management component (not shown). The power management component can interface between the USB port used for transferring power and the battery source of the headphones. In this regard the power management component may include an integrated circuit such as Linear Chip LTC4160. The Specification for the Linear Chip LTC4160 (Switching Power Manager with USB On-The-Go And Overvoltage Protection available at &lt;http://cds.linear.com/docs/Datasheet/41601fa.pdf&gt;) and is hereby incorporated by reference as if set forth herein. 
         [0028]    In exemplary embodiments, the power management component may be used to safeguard the headphones from being excessively drained. In other words, the power management component may prevent the transfer of electrical power once the power level of the headphones battery source reaches or dips below a threshold value, for example (20% of the battery power capacity). 
         [0029]    In some exemplary embodiments, the power management component may also control or regulate how fast electrical power is transferred from the headphones. 
         [0030]    In some exemplary embodiments, the headphones may include an attached or affixed connector, such as a USB connector. In some embodiments, such a connector may be retractable. For example the cable/wire attached to such a USB connector may be capable of retracting into the interior of the headphones. In some exemplary embodiments, the connector (e.g., USB connector) may be attached headphones so as to be able to swivel. In this regard, the connector may swivel or conveniently fold next or into the headphones, or a portion thereof. Such connectors (e.g., retractable and/or swivel connectors) may be utilized, modified, and/or implemented in accordance with the embodiments described herein, e.g., in order to facilitate transferring power and/or data to and from the headphones. 
         [0031]    It will be understood that that any of the above steps and/or elements can be combined, separated, in any combination and/or separation thereof, and/or taken in any order. For ease, the steps are described as being sequential and/or in order. This is merely for ease and is not in any way meant to be a limitation. 
         [0032]    Now that exemplary embodiments of the present disclosure have been shown and described in detail, various modifications and improvements thereon will become readily apparent to those skilled in the art.