Patent Publication Number: US-2015077632-A1

Title: Display device and display method

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims priority to Taiwanese Patent Application No. 102133114 filed on Sep. 13, 2013 in the Taiwan Intellectual Property Office, the contents of which are hereby incorporated by reference. Relevant subject matter is disclosed in co-pending U.S. patent applications entitled “DISPLAY DEVICE”, Attorney Docket Number US52297, U.S. application Ser. No. [to be advised], filed on the same day as the present application, and co-pending U.S. patent applications entitled “DISPLAY DEVICE”, Attorney Docket Number US52298, U.S. application Ser. No. [to be advised], filed on the same day as the present application. 
    
    
     FIELD 
     The disclosure generally relates to display devices, and more particularly relates to display devices including a liquid crystal display (LCD) panel and display methods implemented by the same. 
     BACKGROUND 
     Display devices are output devices for presentation of information in visual form. The display devices are commonly used as screens for a wide variety of electronic devices, such as televisions and computers. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Many aspects of the disclosure can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the views. 
         FIG. 1  is a block diagram of an embodiment of a display device communicating with a video source. 
         FIG. 2  is a block diagram of an embodiment of a plurality of display devices communicating with the video source. 
         FIG. 3  is a flowchart of an embodiment of a display method. 
     
    
    
     DETAILED DESCRIPTION 
     It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures and components have not been described in detail so as not to obscure the related relevant feature being described. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features. The description is not to be considered as limiting the scope of the embodiments described herein. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references can mean “at least one.” 
     Several definitions that apply throughout this disclosure will now be presented. 
     The term “coupled” is defined as connected, whether directly or indirectly through intervening components, and is not necessarily limited to physical connections. The connection can be such that the objects are permanently connected or releasably connected. The term “comprising” means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in a so-described combination, group, series and the like. 
       FIG. 1  illustrates a block diagram of an embodiment of a display device  10 . The display device  10  includes an LCD panel  11 , a drive board  12 , a power board  13 , a video scaler  14 , a multi-media board  15 , a wireless high-definition (WiHD) receiver  16 , and a storage unit  17 . The display device  10  can receive video data from a video source  20 , and present video images corresponding to the video data. The video source  20  includes a WiHD transmitter  22 . The video source  20  can be a television, a computer, a digital video disc (DVD) player, a gaming device, a smart phone, or any other electronic device. 
     The storage unit  17  can store a device identifier (ID) of the display device  10 . The device ID can include one or more numbers, letters, or symbols. 
     The WiHD receiver  16  can establish a wireless connection with the WiHD transmitter  22 , and the video source  20  can transmit the video data to the display device  10  via the wireless connection. WiHD is a unified standard which defines a specification for a digital network interface for wireless transmission of high-definition content for consumer electronics products. 
     The video source  20  can transmit a target ID to the WiHD receiver  16  after the wireless connection is established. The WiHD receiver  16  can retrieve the device ID from the storage unit  17  and compare the device ID with the target ID. When the device ID matches the target ID, the multi-media board  15  can receive video data from the video source  20  via the wireless connection. The multi-media board  15  is connected to the video scaler  14  and can transmit the video data to the video scaler  14 . 
     The video scaler  14  can scale the video data and generate scaled video data of a dimension compatible with the LCD panel  11 . The video scaler  14  can scale the video data in either the horizontal or the vertical direction. The video scaler  14  is connected to the drive board  12 , and can transmit the scaled video data to the drive board  12 . 
     The drive board  12  can generate drive signals based on the scaled video data. The drive board  12  is connected to the LCD panel  11 , and can transmit the drive signals to the LCD panel  11 . 
     The power board  13  can provide power to the LCD panel  11 . The LCD panel  11  can present video images according to the drive signals received from the drive board  12 . 
     The drive board  12  and the LCD panel  11  communicate with each other via a high-speed signal transmission interface. 
     When a resolution of the LCD panel  11  is lower than the Full HD resolution (1920*1080 pixels), the drive board  12  can transmit the drive signals to the LCD panel via a low voltage differential signaling (LVDS) interface. The LVDS interface can operate at low power and can run at very high speeds using inexpensive twisted-pair copper cables. 
     When the resolution of the LCD panel  11  is equal to or higher than the Full HD resolution, the drive board  12  can transmit the drive signals to the LCD panel via a V-by-One HS interface. The V-by-One HS interface can run at faster speeds than the LVDS interface. 
       FIG. 2  illustrates a block diagram of an embodiment of a plurality of display devices  10  arranged in a matrix. Each of the display devices  10  has a unique device ID, such as ID01, ID02, ID03, and so on. When the video source  20  has established a wireless connection with the display devices  10 , the video source  20  can transmit a target ID to the display devices  10  to select a specific one of the display devices  10  and transmit video data to the selected display device  10 . 
       FIG. 3  illustrates a flowchart of an embodiment of a display method. The display method is provided by way of example, as there are a variety of ways to carry out the method. The method described below can be carried out using the configurations illustrated in  FIGS. 1 and 2 , for example, and various elements of these figures are referenced in explaining example method. Each block shown in  FIG. 3  represents one or more processes, methods or subroutines, carried out in the example method. Furthermore, the illustrated order of blocks is illustrative only and the order of the blocks can change according to the present disclosure. Additional blocks can be added or fewer blocks may be utilized, without departing from this disclosure. The example method can begin at block  301 . 
     In block  301 , a WiHD receiver  16  establishes a wireless connection with a WiHD transmitter  22  of a video source  20 . 
     In block  302 , the WiHD receiver  16  receives a target ID from the video source  20  via the wireless connection. 
     In block  303 , the WiHD receiver  16  retrieves a device ID from a storage unit  17 . 
     In block  304 , the WiHD receiver  16  compares the device ID with the target ID. If the device ID matches the target ID, block  305  is implemented. Otherwise, the process ends. 
     In block  305 , a multi-media board  15  receives video data from the video source  20  and transmits the video data to a video scaler  14 . 
     In block  306 , the video scaler  14  scales the video data and generates scaled video data of a dimension compatible with an LCD panel  11 . The video scaler  14  transmits the scaled video data to a drive board  12 . 
     In block  307 , the drive board  12  generates drive signals based on the scaled video data and transmits the drive signals to the LCD panel  11 . 
     In block  308 , the LCD panel  11  presents video images according to the drive signals received from the drive board  12 . 
     It is believed that the present embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the disclosure or sacrificing all of its material advantages, the examples hereinbefore described merely being preferred or exemplary embodiments.