Abstract:
The Mobile Phone/PDA Security Masking Box is a sound insulated box for use as a temporary storage location for cellular and other mobile devices in locations at which confidential and sensitive conversations and discussions are being conducted. A pink/white noise generating device within the box generates a masking noise such that the cellular or other mobile devices inside the box are unable to pick up or record conversations outside the box.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    This invention relates, in general, to a box for the storage of cellular or mobile wireless devices, and, in particular, to a box which produces a white noise to prevent the cellular or mobile wireless devices from picking sounds from the surrounding area. 
         [0002]    Senior executives and officials constantly strive to keep sensitive, confidential, intellectual property and trade secrets protected. During discussions of these products in offices and elsewhere, they are also required or need to be in communications contact with others. Today staying in contact is more than ever being done by cellular or mobile wireless devices. These individuals need to keep their devices connected to the network and be able to recognize and respond to certain calls and messages even when having sensitive and confidential discussions with others. 
         [0003]    Today more devices are capable of multiple functions and also some devices are capable of being manipulated remotely into remote listening devices such that the phone&#39;s built in microphone can be activated and room sounds be picked up and transmitted to a remote location. Other devices such as pens, watches and other normal body worn items can be intentionally or unintentionally carried into an area of sensitive conversation and record or transmit audio. 
       SUMMARY OF THE INVENTION 
       [0004]    The present invention is directed to a box which produces a white noise to prevent the cellular or mobile wireless devices within it from picking sounds from the surrounding area. The Mobile Phone/PDA Security Masking Box provides a countermeasure against the vulnerability of subjecting confidential and private conversations being picked and recording by cellular or mobile wireless devices, and yet allows for alerting of incoming calls and visual identification of caller ID to allow the conversation to be interrupted and the required phone call or message responded to. Several cellular or mobile wireless devices can be placed within the enclosure simultaneously as well as potentially vulnerable devices that have or may have electronics within such as watches, pens, recorders, thumb drives etc. 
         [0005]    It is an object of the present invention to provide a new and improved security box cellular or mobile wireless devices that will prevent the devices from picking up or recording conversations outside of the box. 
         [0006]    It is an object of the present invention to provide a new and improved security box cellular or mobile wireless devices which will allow the devices to receive incoming call while isolating them from local conversations. 
         [0007]    It is an object of the present invention to provide a new and improved security box cellular or mobile wireless devices to be easily accessed should they require attention while isolated. 
         [0008]    These and other objects and advantages of the present invention will be fully apparent from the following description, when taken in connection with the annexed drawings. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0009]      FIG. 1  is an overall view of the present invention. 
           [0010]      FIG. 2  is a sectional view of the box wall. 
           [0011]      FIG. 3  is an interior view of the present invention. 
       
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0012]    The preferred embodiment herein described is not intended to be exhaustive or to limit the invention to the precise form disclosed. It is chosen and described to best explain the invention so that others, skilled in the art to which the invention pertains, might utilize its teachings. 
         [0013]    Referring to  FIG. 1 , the Security Masking Box  1  is a box  2  with a cover  3 . The cover  3  is preferably connected to the box  2  by a hinge  4 . Alternatively, the cover  3  may be a separate piece that fits onto the box  2 . As seen in  FIG. 2 , the box  2  has a double wall  5  construction with sound absorbing materials  6  arranged between the walls  5 . The cover  3  uses the same double wall  5  construction with sound absorbing materials  6  as the box  2 . The interior surfaces of the box  2  may be covered with a sound absorbing material such as felt  25 . The felt  25  will also provide a soft surface to protect the surfaces of devices  8  placed within the box  2 . 
         [0014]    In one embodiment, as shown in  FIG. 1 , the cover  3  is provided with a window  7  to allow the cellular or mobile wireless devices  8  to be viewed inside the box for visual observation of any incoming calls and caller identification information. The window  7  has at least two separated layers of transparent material  26  to increase the sound isolating ability of the window  7 . 
         [0015]      FIG. 3  shows the interior of the box  2 . Acoustical noise masking circuitry  9  is placed beneath an interior shelf  10  in the box  2 . The acoustical noise masking circuitry  9  is electrically powered be either one or more batteries  11 , or an outside electrical power source  12  such as an A/C adapter. The outside electrical power source  12  may be connected to the box  2  by a plug  13  or it may be permanently attached with the cord  14  routed though an opening  15  in the box. The opening  15  is provided with a grommet  16  or other material to prevent sounds from entering the box  2 . The one or more batteries  11  may be rechargeable by an outside electrical power source  12  through the plug  13 . Alternatively, the one or more batteries  11  may be recharged by a power mat  27  instead of an outside electrical power source  12 . The power mat  27  uses magnetic induction to transfer electricity to receiver circuitry  28  to recharge the one or more batteries  11 . This would allow for the manufacture of a box  2  without penetration of the box for a plug  13  thus enhancing appearance and allowing more portability of the Security Masking Box  1  within the room or area without regard to a power outlet. Either during use or afterwards the Security Masking Box  1  could be placed on top of the power mat  27  for recharging of the one or more batteries  11 . 
         [0016]    The acoustical noise masking circuitry  9  generates various acoustic power levels of pseudo random pink and white noise. The acoustical noise generating circuitry  9  is optimized for voice range noise masking to prevent cellular or mobile wireless devices  8 , or other listening devices, from picking up conversations, and is designed to reduce the effectiveness of eavesdropping devices such as microphones and tape recorders. The optimal noise generating circuitry will provide the masking noise in the audio frequency range of 300 Hz to 3 KHz and will generate, if necessary, up to 90 dB of noise at a distance of 4 feet. A control  17  is provided inside the box to adjust the volume of the masking noise. Pink and white noise at the correct levels of intensity have been proven to mask conversations when provided in the same sound range as that of human speech. Inside the box  2 , the noise generated is at such a level that any conversations from outside the box  2  are sufficiently masked to render them unintelligible at the microphones of the cellular or mobile wireless devices  8  inside the box  2 , or the levels are of such an intensity that some microphones typically used in cellular or mobile wireless devices  8  are driven into saturation with the pink and white noise. 
         [0017]    In another embodiment, as shown in  FIGS. 1 and 3 , the box  2  is provided with an OLED (Organic Light Emitting Diode) caller ID module  20 . The caller ID module  20  uses Bluetooth™ or other wireless protocol for exchanging data to connect to the externally mounted OLED indicator  21 . Other types of alphanumeric readouts may also be used. 
         [0018]    In another embodiment, as shown in  FIGS. 1 and 3 , one or more RF sensors  22  is mounted inside the box  2  and connected to an outside indicator  23  that visually and/or audibly indicates whether a cellular or mobile wireless device  8  in the box is transmitting an RF signal within the frequency range of the RF sensors  22 . 
         [0019]    For added security, the box  2  and cover  3  may be provided with a lockable latch  24  to prevent the devices  8  within the box  2  from being surreptitiously removed. The latch  24  may be key or combination operated. 
         [0020]    An initial model has been built and tested, and performed as desired when an operating mobile phone was inserted in the box and then called and answered. Conversations in the room were unintelligible and there was not even an indication they were taking place from the phone used to call the phone in the Mobile Phone/PDA Security Masking Box  1 . 
         [0021]    Although the Mobile Phone/PDA Security Masking Box  1  and the method of using the same according to the present invention has been described in the foregoing specification with considerable details, it is to be understood that modifications may be made to the invention which do not exceed the scope of the appended claims and modified forms of the present invention done by others skilled in the art to which the invention pertains will be considered infringements of this invention when those modified forms fall within the claimed scope of this invention.