Patent Document

The application is a continuation-in-part (CIP) application of Ser. No. 12/852,468, filed on 7 Aug. 2010, entitled “Portable Communication Device Having an Extension Display.” 
    
    
     FIELD OF THE INVENTION 
     The present invention generally relates to a tablet personal computer transformer, and especially to a tablet computer transformer for a portable communication device to transform the portable communication device into a tablet computer. 
     DESCRIPTION OF THE PRIOR ART 
     Because of the development of information technology (IT), information could be exchanged with higher capacity and faster speed. Internet is designed as an open structure to exchange information freely without restriction. Today, a third generation mobile phone standard allows a user to access video communication through air. Thus, certain communication service requiring real time information exchange, such as viewing live video, has become feasible through a mobile phone communication network or Internet. Mobile phone communications systems typically include multiple base stations for communicating with mobile stations in various geographical transmission areas. Each base station provides an interface between the mobile station and a telecommunications network. Mobile phone communications systems are in use or being developed in which a geographic coverage area of the system is divided into smaller separate cells, and a mobile phone communicates with the network via a fixed station located in the cell. Mobile phones belonging to the system are free to travel from one cell to another. When a subscriber within the same system or within an external system wishes to call a mobile subscriber within the system, the network must have information on the actual location of the mobile phone. In pace with the development of information and computer technology, the electronic products grow rapidly with the trend of small size, multifunction and high operation speed. Based on the development of cellular integration technology, communication systems have also been introduced to allow users to obtain information more conveniently. Thus, the business accompanied with the communication device flourish as well due to the development of the communication technology. The Internet and communication service providers also offer business services to assist customers to transfer information or extend the market. The mobile phone manufactures have to release new models with different appearances, functions and styles more frequently so as to attract the attention of customers and occupy a favorable marketing share. Communication services providers or information services providers also have to provide diverse, comprehensive and latest information to customers. However, signals received by the communication module are presented on the display after processed. Generally, a display screen of a conventional portable device is too small to enable a user to browse a webpage or video image. Accordingly, the present invention is introduced to overcome aforementioned difficulties. 
     SUMMARY OF THE INVENTION 
     The main object of the present invention is to provide a wireless and portable communication device provided with a built-in or an external extension display to enable a user to browse a webpage or image information, via the Internet. 
     It is also an object of the present invention to provide a tablet personal computer transformer. 
     In accordance with the present invention, a portable communication device is equipped with an extension display including a control unit; a main display coupled to the control unit for displaying dial information to facilitate communication; an extension display coupled to the control unit, wherein an area of the extension display is greater than an area of the main display, so as to display at least one part of web page or image information. The portable communication device further comprises a detecting module coupled to the control unit to facilitate the detection of a signal of webpage or image information. A switch device is coupled to the control unit to transfer the webpage or image information to the extension display. 
     The extension display includes a LCD (Liquid Crystal Display) or an OLEO (Organic Light Emitting Diode) display. Regarding a built-in extension display, a storage device is provided to store the extension display; in another example, an extension interface is provided to couple to the extension display. The extension display comprises a touch display. 
     The tablet computer transformer includes an external extension display. An extension interface is coupled to the extension display; an extension display is coupled to the control unit through the extension interface for displaying video or image from the portable communication device, wherein a display area of the extension display is greater than an area of the main display of the portable communication device. It has to be noted that the portable communication device is a separate device from the external extension display, when the portable communication device disconnects from the external extension display, and is transformed into a tablet or pad computer, when the portable communication device connects to the external extension display. The command, instruction and signal transfer are made through the extension interface. The displayed video or image is processed by the portable communication device and is displayed by the external extension display, thereby transforming the portable communication device to the tablet or pad computer after the mobile phone is integrated into the tablet computer transformer. The external extension display includes a touch screen and a detecting module coupled to the control unit to facilitate the function of detection of a signal of webpage or image information. 
     The tablet computer transformer further comprises a switch device coupled to the control unit to transfer the video or image to the external extension display. The external extension display may include a receiving slot or cavity formed on the back side of the tablet computer transformer having an extension display to receive the portable communication device. A backup power (i.e., battery or extension power) is provided for recharging the portable communication device or a peripheral device; a backup memory is provided in the tablet computer transformer to expend the storage space for the portable communication device or a peripheral device. The tablet computer transformer further comprises a processor which perform its function accompany with the mobile phone functions to upgrade the performance of the portable communication device. The tablet computer transformer further comprises an image capturing device. A recharging/charging interface is also provided in the tablet computer transformer for charging the portable communication device or a peripheral device. 
     In accordance with the present invention, a tablet computer transformer system comprises a portable communication device having a main display; at least one wireless communication module coupled to a network to receive Internet data including a webpage; a memory to store image or video; an external extension display provided for the portable communication device; and a receiving cavity arranged to receive the portable communication device and a control unit. An extension interface is set in the receiving cavity and coupled to the control unit; the extension display is coupled to the portable communication device through the extension interface for displaying the video or the image sent from the portable communication device or displaying the Internet data; wherein a display area of the extension display is greater than an area of the main display of the portable communication device, wherein the portable communication device is a separate device from the external extension display when the portable communication device disconnects from the tablet computer transformer and is transformed into a tablet computer when the portable communication device connects to the external extension display; and wherein the displayed video or image is processed by and sent from the portable communication device or the control unit and displayed by the extension display, thereby transforming the portable communication device to the tablet or pad computer. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  shows a block diagram of a portable communication device according to an example embodiment of the present invention. 
         FIG. 2  shows a block diagram of a portable communication device according to another embodiment of the present invention. 
         FIGS. 3A-3E  show a flexible display as an extension display according to an example embodiment of the present invention. 
         FIG. 4  shows a block diagram of a tablet computer transformer having an extension display according to an embodiment of the present invention. 
         FIG. 5  shows a block diagram of a tablet computer transformer having an external extension display according to an embodiment of the present invention.  FIG. 5A  shows a backside of a tablet computer transformer having a receiving slot or cavity to accommodate insertion of a portable communication device according to an embodiment of the present invention. 
         FIG. 6  shows a block diagram of a tablet computer transformer having an extension display and an extension processor according to the present invention. 
         FIG. 7  shows a block diagram of a tablet computer transformer having an external extension display and an extension processor according to the present invention. 
         FIG. 8  shows a block diagram of an extension processor according to an embodiment of the present invention. 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     The present invention can be applied to any wireless communication device including, but not limited to, a cell phone, a PDA (personal digital assistant), or a GPS (global positioning system). In general wireless communication systems, communication network service providers from different systems or regions use various communication protocols or two-way pager communication protocols; however, the present invention is not limited to any kind of protocols. The present invention discloses a tablet PC (personal computer) transformer, typically referred to a computer shaped in the form of a notebook or a slate with capabilities of being written on, via the use of digitizing tablet technology or a touch screen. 
     Referring now to  FIG. 1 , a block diagram of a wireless and portable communication device of the present invention is shown. For the sake of simplicity, an example embodiment of the portable communication device is introduced hereinafter as an explanation; however, such an example embodiment not used to limit the present invention in anyway, i.e., the present invention can be modified to facilitate to use other different kinds of communication systems or protocols without departing from the spirit and scope of the present invention. For example, a single chip system can be introduced to integrate chips or processors hereinafter. The portable communication device includes a control unit  100 , such as a CPU (central processing unit), which is used to process or control commands, information, data, and computing of the device. Memory  105 , for example, ROM (read only memory), non-volatile memory such as a flash memory and/or RAM (random access memory) is coupled to the control unit  100 . Generally, permanent data is stored in the ROM, and an operation program (OS) or application programs such as driver applications can generally be stored in the non-volatile memory which can still retain the data stored therein when a power supply is unavailable and can be read or written repeatedly when the power supply is available. The system operation program (OS) and application programs stored in the non-volatile memory control the execution of all necessary functions and can be presented on the main display  115  through the user interface  110  after processed by the CPU or the control unit  100 . An input unit  170  is coupled to the control unit  100  to facilitate a user to key in commands or data. The main display  115  is a screen of a general portable communication device, such as a LCD or OLED display. 
     The antenna system  120  may be a multi-band antenna or can be composed by a plurality of antennas, according to demands. Aforementioned antenna may be dipole antenna, plane antenna, inverted-F Antenna, fractal antenna, etc. The antenna system  120  is coupled to a wireless communication module  100 A to receive signals. The wireless communication module  100 A is suitable for transferring information during movement, and may generally include: converting signals to an IF (intermediate frequency) through oscillator signals of a mixing region of a receiver. The converted signals are modified to a bandwidth predetermined by the protocol at a transmitter, and transmitted by the antenna system  120 . A modem is coupled to the receiver and the transmitter to modulate or de-modulate signals. Aforementioned protocol can be an audio/video wireless communication protocol, which may include, but not limited to International Telecommunications Unit (ITU): 3G, 3.5 G, 4G, W-CDMA, CDMA2000, CDMA2001, TD-CDMA/TD-SCDMA, UWC-136, and DECT. A base band processor  145  is coupled to the modem of the wireless communication module  100 A to process the signals with a predetermined bandwidth and communication protocols. A second wireless communication module  1006  may be introduced, which may include, but not limited to, WiFi, Wimax, or 802.11(a, b, g, n), and can exist individually or together with the wireless communication module  100 A. Signals processed by the base band processor  145  include control signals and audio signals, the control signals are transmitted to the control unit  100  and the audio signals are transmitted to a CODEC  150 ; a voice converter  155  is coupled to the CODEC  150  to convert digital signals to analog signals or to convert analog signals to digital signals. A microphone  160  and a speaker  165  are coupled to a voice converter  155  respectively. A SIM card connector (not shown in  FIG. 1 ) is introduced to facilitate insertion of a SIM card into the system. The SIM card can be connected to the control unit  100 , via the SIM card connector such that information and password stored in the SIM card can be accessed by the control unit  100 . In addition, the present invention may also include a digital image capture module  200  connected to the control unit  100  to capture images, which may be a CMOS image sensor or CCO array. 
     Generally, a main display of a conventional portable communication device is too small to display an entire webpage. As a result, the user has to move the webpage continuously, thereby causing an inconvenient to the user. The present invention includes a detecting unit  104  arranged to detect whether the Internet is connected thereto or not. If an Internet signal is detected or a browser is activated, the control unit  100  activates a switching device  102  and transfer Internet signals or alternatively, all or part of information to the extension display  185  to drive the extension display  185  to display all or part of the information, thereby facilitating a visual display of webpage information. A display area of the extension display  185  is greater than a display area of the main display  115 , and the user can determine whether the display is switched or not. In the case, the portable communication device  10  may drive the main display  115  and the extension display  185  at the same time. For a type of built-in extension display, a receiving device  188  is provided to receive the extension display  185 . 
     An example of such an extension display  185  is a flexible display, such as an OLED display. The flexible extension display can be rolled and received in a storage space, and can be drawn back to spread out the display. Aforementioned OLED (Organic Light-Emitting Diode) is also called OLED (Organic Electroluminesence Display). Advantages of OLED include luminescence, wide view angle, high contrast, low power consumption, high response speed, full color, simplified manufacturing process, etc. The species of OLED display comprise single-color type, multi-color type, and full-color type, etc. OLED displays can be classified as PMOLED (passive matrix OLED) and AMOLED (active matrix OLED) according to the differences of driving means. PLED (polymer light emitting diode) may also be introduced. Folding mechanism can also be introduced to facilitate a flexible display according to the present invention. For example, a receiving device  188  can be a folding mechanism to receive the extension display  185 . When the detecting unit  104  detects that the folding mechanism is under operation, then Internet signals or all or part of information is transferred to the extension display  185  for an extension display. A receiving device  188  can also be a roller-type receiving device, shown in  FIGS. 3A-3E , including: a reel  305  for rolling a flexible display  300 ; a central fixed stick  306 ; a spring rolled around the central fix stick  306  in the reel  305 ; and a locking mechanism including a ratchet  315  and a detent  315   a  used to prevent the spring  310  from loosening when the flexible display  300  is spread out, shown in  FIG. 3B  and  FIG. 3D , and to loosen the spring  310  when the flexible display  300  is rolled up, shown in  FIG. 3C  and  FIG. 3E . 
     As further shown in  FIG. 3B  and  FIG. 3D , the flexible display  300  can be fixed or secured after it is extended. The flexible display  300  may be a flexible OLED rolled around the reel  305 . For receiving the flexible display  300 , a user can just release the flexible display  300  after pulling hard, and then the flexible display  300  will be rolled up. Generally, the reel  305  is provided with a spring  310  rolled around a central fixed stick  306  configured in the reel  305 . Tighten the flexible display  300  which is spread out, and then a locking mechanism  315 , such as a ratchet  315  and a detent  315   a , can be introduced to prevent the spring  310  from being loosen when the flexible display  300  is extended. However, the ratchet  315  will not clamp when the flexible display  300  is pulled suddenly, thereby loosening the spring  310 , such that the flexible display  300  will be rolled up, shown in  FIG. 3C  and  FIG. 3E . 
       FIG. 2  shows a block diagram of a portable communication device according to another embodiment of the present invention. In the embodiment shown in  FIG. 2 , an external extension interface  186  is introduced. When the detecting unit  104  detects an external signal, a switching signal is transferred to the switch device  102 , so as to transfer Internet data or signals or at least part of information to the external extension display  185  to drive the extension display  185  to display the image or video. Aforementioned “switching” can be achieved manually or automatically by the software. Aforementioned detecting unit  104  can be a single circuit or an integrated circuit (IC) and may obtain parameters directly or indirectly. Messages received by the wireless is portable communication device of the present invention can transfer all or part of webpage information manually or automatically to the extension display  185  by the switch device  102  to enable a user to browse the webpage. 
     Other embodiments are similar to aforementioned embodiments, and the difference is described as follows. When the detecting unit  104  detects video or dynamic, still image signals, such as video format, photo format, digital TV signals or MPEG signals, the control unit  100  activates the switching device  102  to switch video signals to the extension display  185 . For example, a commercial processor which can process and decode the compressed MPEG file may be introduced, such as a media player chip having a H.264 codec engine. For example, the processor chip is composed by a CPU core, a media engine, a graphics processor, and a virtual mobile engine (VME). The CPU core is based on the design of R4000 of MIPS, and comprises a floating point processor (FPU) and a vector floating point processor (VFPU), such that the ability of floating point computing can reach more than 2.6GFlops per second; the media engine can use R4000 which is an identical one used in the CPU core, and includes an independent embedded 2 MB memory to assist the system to process audio/video stream. Thus, an embedded memory is introduced to adapt to the vector process unit including H.264 decompression, and various process demands such as audio process. A utilization rate of the processor chip may be improved by design of altering information process dynamically, thereby simplifying design of the chip and reducing the loss of power. Software can also be introduced to decode or process signals. 
     Referring now to  FIG. 4 , another example of a tablet computer transformer  2000  having an external extension display  185  according to the present invention is shown. A control unit  402  is provided in the tablet computer transformer  2000 , and the portable communication device  10  may be, for example, mobile phone, media player, digital camera or digital video camera. The tablet computer transformer  2000  having an external extension display  185  and the portable communication device  10  are connected through the extension interface  186 A set aside or in the backside of the tablet computer transformer  2000 . The portable communication device  10  is provided with a driver to drive the external extension display  185 . The driver application may be installed in the external extension display  185 . A backup power (or extension power)  400  is electrically coupled to the control unit  402  to provide power by the tablet computer transformer  2000  or recharge the portable communication device  10  or the peripheral device, thereby extending the operation duration of the portable communication device  10  or the peripheral device. A charging interface  410  is provided for recharging the external extension display  185  or the tablet computer transformer  2000  from an external power or to recharge the portable communication device  10  or the peripheral device by the tablet computer transformer  2000 . An image capturing device  408 , such as a CMOS or CCO sensor, and extension speakers  406  are also respectively and electrically coupled to the control unit  402  or/and the extension interface  186 A in order to transmit the image captured by the image capturing device  408  to a remote terminal, or to output the video signal and/or the audio signal downloaded by the portable communication device  10  to the extension display  185  and the speaker  406  via the extension interface  186 A, thereby transforming the portable communication device  10  into a tablet computer. Extension memory  404  is electrically coupled to the control unit  402  and/or the extension interface  186 A to act as an extension memory or a backup memory for the portable communication device  10 . A plug-in memory card or flash memory card may be utilized. The external extension display  185  includes a touch screen to receive instructions, via human fingers&#39; touch, thereby controlling the external extension display  185  or the portable communication device  10 . The touch technologies include a resistance type, a capacitance type, an extra sonic type, and an optical type. The present invention may relay image or video signals to the external extension display  185  to transform the portable communication device  10  into a tablet personal computer and to extend the operation duration or memory storage for the portable communication device  10 , the digital image capturing device or the media player. 
       FIG. 5  shows a block diagram of a tablet computer transformer having an external extension display according to an embodiment of the present invention. In contrast,  FIG. 5A  shows a backside of a tablet computer transformer having a receiving slot or cavity to accommodate insertion of a portable communication device according to an embodiment of the present invention. As shown in  FIG. 5  and  FIG. 5A , the external extension display  185  is provided with a receiving slot or cavity  414  set in the tablet computer transformer  2000  to receive insertion of the portable communication device  10  into the external extension display  185  in order to integrate the tablet computer transformer  2000  and the portable communication device  10  by the extension interface  186 A. In the case, the extension interface  186 A is set in the receiving slot or cavity  414  to allow and accommodate insertion of the entire portable communication device  10  into the receiving slot or cavity  414  for integrating with the tablet computer transformer  2000 . In a preferred embodiment, the receiving slot or cavity  414  is set on the back side surface of the tablet computer transformer  2000  as shown in  FIG. 5A  and  FIG. 7 . 
     Other examples are shown in  FIG. 6  and  FIG. 7 . These examples include all or part of the elements in the embodiment as shown in  FIG. 1 ,  FIG. 2 ,  FIG. 4 ,  FIG. 5 , and  FIG. 5A . As shown in  FIG. 6  and  FIG. 7 , an extension processor  412  is coupled to the control unit  402 ; and the extension interface  186 A in order to upgrade the portable communication device  10  to a dual core processor for improved performance.  FIG. 8  shows a scheme including the control unit  402  and the extension processor  412 . The extension processor  412  includes a processor  810  which is coupled with a first cache  820  and a second cache  830  respectively. A cross processor interface  840  is electrically coupled to the first cache  820  and the second cache  830 . A memory controller  850  and a data transmission interface  860  are coupled to the cross processor interface  840  to determine data output and input to/from the control unit  100  and the processor  810 . The present invention discloses a tablet computer transformer system designed to transform a mobile phone and a media player into a tablet personal computer. The data may be processed by the portable communication device  100 , the media player or the extension display. The image video or Internet data are transferred from the portable communication device  100 , the media player to the external extension display  185  to allow a user to browse a webpage and watch video by the external extension display  185  having a larger display area. In another example embodiment, the second wireless communication module  1008  may be coupled to the extension interface  186 A to achieve wireless transmission. Under the case, the extension interface  186 A fulfills the requirement of the wireless transmission protocols and specification. 
     Aforementioned units and modules can be combined arbitrarily according to demands. As will be understood by persons skilled in the art, the foregoing preferred embodiment of the present invention is illustrative of the present invention rather than limiting the present invention. Having described the invention in connection with a preferred embodiment, modification will now suggest itself to those skilled in the art. Thus, the invention is not to be limited to this embodiment, but rather the invention is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims, the scope of which should be accorded the broadest interpretation so as to encompass all such modifications and similar structures. While the preferred embodiment of the invention has been illustrated and described, it will be appreciated that various changes can be made therein without departing from the spirit and scope of the invention.

Technology Category: g