Abstract:
A display device and method of managing a list of channel information in a video display device are provided. The display device includes the steps of displaying a first window including a first list of pre-selected channel and/or program information, storing at least one channel and/or program information deleted from the first window to a data storage, displaying a second window including a second list of deleted channel and/or program information stored in the data storage, and selectively restoring a channel and/or program information selected from the second list to the first list.

Description:
This application claims the benefit of the Korean Patent Application No. 10-2004-0007585, filed on Feb. 5, 2004, which is hereby incorporated by reference as if fully set forth herein. 
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to an image display device, and more particularly, to a display device and method of managing a list of channel information in a video display device. 
     2. Discussion of the Related Art 
     With the widespread use of cable, satellite, and other digital services, the number of channels available to subscribers is increasing. Compared to analog service, one of the advantages to digital service is not only higher quality video and audio, but it also provides various added services, such as on screen channel/program guide. As a result, digital service requires more data than as required by analog service. Because transmitting a large amount of data takes time, data is often compressed prior to the transmission for a faster transmission. Likewise, prior to transmitting a large amount of data related to digital service, video/audio data is corn pressed using a compression medium such as Moving Picture Experts Group-2 (MPEG-2) and Audio Code Number 3 (AC-3). The compressed data is transmitted via cable, satellite, or other service by using Quadrature Phase Shift Keying (QPSK)/VSB/Quadrature Amplitude Modulation (QAM) transmission methods. 
     With more advanced compression and transmission methods, the video display devices are able to take advantage of improved methods which process much more data than analog service. Consequently, the use of digital service has expanded to provide subscribers with more channels with added service, such as higher quality pictures and sound. Moreover, digital service provides other added service such as home shopping, electronic paper, and stock information. These advanced types of video display devices, like the satellite signal receiver box, could be connected from an external source to a television set employing Phase Alternating Line (PAL)/National Television System Committee (NTSC) standards or can be provided internally in a television set. 
     Furthermore, with a rapid improvement in multimedia technology, high quality video and audio are becoming a common place. Accordingly, not only are people becoming accustomed to better video and audio, people&#39;s expectation and demand for better picture, sound, and other added services are increasing. As such, there is a need for digital television, internet services, and the like to provide multimedia service of such caliber. 
     As one of the ways for people to enjoy the improved multimedia service, people use television network, broadband, or modem connections to download the multimedia data which are compressed and transmitted via various programming languages such as Hyper Text Makeup Language (HTML). Here, such multimedia data service providers are divided into two major categories—those using the existing television network and the other using modem connection. Subsequently, these types of service providers usually use private section of Moving Picture Experts Group-2 (MPEG-2) stream or Digital Storage Media—Command and Control (DSM-CC) protocol to receive multimedia information from a server. 
     As facilitated by improvements in compression and transmission methods, an increased number of channels provide more subscriber-oriented information. With an increasing number of channels and information available to subscribers, more and more subscribers desire faster access and controllability to desired channel/program information. In the past, the video display devices only provided limited functions and information such as auto selection and periodic channel searches, which provided limited information to subscribers, such as providing the status of a certain request information or reorganized channel/program information. 
     However, with the improving technology in digital services, an increasing number of people are likely to become exposed to more channels and more information. The existing device would not be able to process the added information efficiently or effectively. Simply put, more channels and program information means more unwanted or not watched channels. Viewers/users usually delete these channels so as to browse through a large number of channels more efficiently. In other words, this means that there are more channels for the users to delete. Without a better device to accommodate such a growing need and concern, the users would be left performing the deleting operation every time the users browses through a large number of channels. This is inefficient and inconvenient to the users. 
     SUMMARY OF THE INVENTION 
     Accordingly, the present invention is directed to a display device and method of managing a list of channel information in a video display device that substantially obviates one or more problems due to limitations and disadvantages of the related art. 
     An object of the present invention is to provide a display device and method of managing a list of channel information in a video display device, which can store deleted channel/program information so as to be able to restore the deleted information upon a user&#39;s request, without any searching process. 
     Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. 
     To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, a method of managing a list of channel information in a video display device includes the steps of displaying a first window including a first list of pre-selected channel and/or program information, storing at least one channel and/or program information deleted from the first window to a data storage, displaying a second window including a second list of deleted channel and/or program information stored in the data storage, and selectively restoring a channel and/or program information selected from the second list to the first list. 
     In another aspect of the present invention, a method of managing a list of program information in a video display device includes the steps of displaying a first window including a first list of pre-selected channel and/or program information, storing at least one channel and/or program information deleted from the first window to a data storage displaying a second window including a second list of deleted channel and/or program information stored in the data storage, and permanently deleting a channel and/or program information selected from the second list in response to a user selection. 
     In another aspect of the present invention, a display device includes a user interface unit receiving commands from a user, a data storage having a first specified section which stores a first list of pre-selected channel information and a second specified section which stores a second list of channel information deleted from the first list of channel information, and a control processor restoring a channel information selected from the second list of channel information back to the first list of channel information. 
     In a further aspect of the present invention, a user interface unit receiving commands from a user, a data storage having a first specified section which stores a first list of pre-selected channel and/or program information and a second specified section which stores a second list of deleted channel and/or program information deleted from the first list, and a control processor selectively restoring a channel and/or program information selected from the second list back to the first list. 
     In another aspect of the present invention, a user interface unit receiving commands from a user, a data storage having a first specified section which stores a first list of pre-selected channel and/or program information and a second specified section which stores a second list of deleted channel and/or program information deleted from the first list, and a control processor permanently deleting a channel and/or program information selected from the second list in response to a user selection. 
     It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the principle of the invention. In the drawings: 
         FIG. 1  illustrates is an exemplary embodiment of a video display device structure according to the present invention; 
         FIG. 2  illustrates an example of a method of controlling channel/program information in a video display device according to the present invention; and 
         FIGS. 3 and 4  illustrate examples of a detailed description of a set of channel/program information related to the method of the controlling channel/program information in the video display device according to the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. 
     According to  FIG. 1 , a video display device according to an embodiment of the present invention includes a tuner  11  which receives broadcast signals via antenna, a demultiplexer  12  which separates the signals received from the tuner  11  into video, audio, and other signals, a user interface  17 , a control processor  18  which outputs control signals according to an user&#39;s input commands via the user interface  17 , a video signal processor  13  which receives the control signals from the control processor  18  and transmits the video signal from the demultimplexer  12  to a display  14  based on the control signals, an audio signal processor  15  which receives the control signals from the control processor  18  and transmits the audio signal from the demultiplexer  12  to a speaker  16  based on the control signals, and a data storage  19  which stores channel/program information. 
     All components of the video display device are operatively coupled. 
     The operation of the video display device of  FIG. 1  is as follows. The user selects a desired channel/program via the user interface  17 . The broadcast signal of the selected channel is then tuned by the tuner  11  and passes through the demultiplexer  12  from which the selected broadcast signal is separated into video, audio, and/or other signals under the control of the control processor  18 . Other signals may include, but are not limited to, channel/program identification (e.g.,  13 ,  25 - 1 , HDD, etc.), channel type (e.g., M-NET, ABC, HBO, etc.), the description of the broadcast type (e.g., drama channel, music channel, movie channel), signal reception status (e.g., strong, weak, none), the title of the program (e.g., Sopranos, American Idol, etc.), and the synopsis of the program. 
     The video signal separated at the demultiplexer  12  is transmitted to the video signal processor  13  where the video signal is processed and transmitted to the display unit  14  for display. Similarly, the audio signal at the demultiplexer  12  is transmitted to the audio signal processor  15  where the audio signal is processed and transmitted to the speaker  16  for reproduction. The control processor  18  transmits control signals to the video signal processor  13  and/or audio signal processor  15  according to the command(s) entered (e.g., by a user) via the user interface  17 , and the data storage  19  stores a list of pre-selected and deleted channel/program information. The user pre-selects certain channel(s) and/or program(s) based on viewing habits, preference, etc. and a list of such selected items is stored in the data storage  19  for browsing. The deleted channel(s) and/or program(s) is stored in a specified section of the data storage  19 . More specifically, when the user enters a command to browse the pre-selected or deleted channel(s) and/or program(s), the control processor  18  transmits the control signals to the data storage  19  to obtain the requested information from the data storage  19 . 
     While browsing the pre-selected channel(s) and/or program(s) list on the display  14 , the user may select to delete certain channel/program information from the list via the user interface  17  such as a remote controller. The selected information is deleted from the pre-stored channel/program information list and stored in the specified section of the data storage  19 . For example, if the user deletes channel  57  from the pre-stored channel(s) and/or program(s) list, the deleted channel information, including the channel identification, broadcast station identification, channel type, and signal reception status, is stored in a specified section of the data storage  19 . 
     Furthermore, the user may choose to browse a list of deleted channel/program information which is stored in a specified section of the data storage  19 . If the user enters a command to view the list of deleted channel/program information, the control processor  18  transmits control signals to the data storage  19  to obtain and display the deleted information stored in the specified section of the data storage  19 . From the deleted channel/program information display at the display  14 , the user may choose either to restore the deleted channel/program information back to the pre-selected channel/program information list or delete the deleted channel/program information permanently from the list of deleted channel/program information. 
     The device according to the present invention allows the user to delete or restore channel/program information. If the user selects to delete a pre-selected channel(s) and/or program(s) from the list, the selected channel/program information is not permanently deleted. Rather, the channel/program information deleted from the list is stored in a specified section of the data storage, providing the user an option to restore the deleted channel(s) and/or program(s). In addition, the user is provided an option to browse the deleted channel/program information and choose to restore the deleted channel/program information back to the pre-selected channel(s) and/or program(s) information list. Moreover, the user can acquire channel/program information the user wants restored using the interface terminal for the internet or other network connection. 
       FIG. 2  illustrates a flowchart of a method of managing channel/program information according to an embodiment of the present invention. This method can be implemented in the device of  FIG. 1  or other suitable device. 
     According to  FIG. 2  of the present invention, after the user enters a command to turn on the power, the video display device determines whether the user entered a command to browse the pre-selected channel/program information list (S 101  and S 102 ). If such a command is entered, then a display of a window including the pre-selected channel/program information list as shown in  FIG. 3  is provided at the display  14  for browsing (S 103 ). If such a command was not entered, the device displays on the screen a video and audio signal selected for viewing (S 112 ). 
     The display window of the pre-selected channels and/or program(s) list as shown in  FIG. 3  further includes a selectable toggle button  26  located next to each pre-selected channel/program information, which provides the user the option to select a particular channel/program from the pre-selected channel(s) and/or program(s) information list. In addition, the display window includes a delete button  27  which provides the user an option to delete the selected channel/program information from the pre-selected channel/program information list. 
     While browsing through the pre-selected channel/program information list, the user could delete certain or all channel(s) and/or program(s) from the pre-selected channel(s) and/or program(s) list (S 104 ). After the selected channel/program information is deleted from the pre-selected channel/program information list, the deleted channel/program information is stored in a specified section of the data storage (S 105 ). The deleted channel/program information stored in the specified section of the data storage is available for browsing by the user. If the user chooses to view the stored deleted channel/program information, a display window including the list of deleted channel/program information is provided as shown in  FIG. 4  at the display  14  for browsing (S 106  and S 107 ). 
     As shown in  FIG. 4 , the display window of the deleted channel/program information list further includes a selectable toggle button  46  located next to each deleted channel/program information, which provides the user the option to select one or more channel(s) and/or program(s) from the list of deleted channel/program information. In addition, the display window includes a delete button  48  which provides the user the option to permanently delete the selected channel/program information from the list of deleted channel/program information (S 110 ). Also, the user may choose to have the channel/program information listed on the list of deleted channel(s) and/or program(s) information restored. This can be implemented by the selection of a restore button  47  on the window showing the list of deleted channel(s) and/or program(s) infotmation. In such a case, the deleted channel/program information stored in the specified section of the data storage is restored back to the pre-selected channel/program information list. (S 108  to S 109 ). However, if the user chooses to delete the deleted channel/program information from the specified section of the data storage, then the channel/program information is permanently deleted (S 110 ). After the user is finished with browsing and editing the channel/program information, the user could turn off the power of the device via the user interface (S 111 ). 
     As described above, a user could browse the list of pre-selected or deleted channel/program information and the list of deleted channel(s) and/or program(s).  FIG. 4  is an illustration of an example of a display window showing a list of deleted channel/program information. More specifically, it shows a set of three deleted channel information( 30 ) and one deleted program information ( 40 ). The channel information is represented, starting with a box labeled number  13  as channel identification  33 , followed by a broadcast station identification  34 , channel type  35 , and signal reception status  36 . Similarly, program information is represented by a box labeled HDD( 41 ), followed by the channel identification ( 42 ), the title of a program ( 43 ), and the synopsis of the program ( 44 ). The same channel and/or program information is provided on the list of pre-selected items as shown in  FIG. 3 . The display window as represented in  FIGS. 3 and 4  could further include, but are not limited to, additional information and function such as On Screen Display (OSD) and Picture-In-Picture (PIP) to allow a user to view the channel/program while browsing. 
     In the display window, a selectable toggle button is provided next to each deleted channel/program information. The toggle buttons allow the user to make selections from the list of deleted channel/program information while providing opportunity to continue browsing until all selections are made. After selection(s) are made from the list of deleted channel/program information, the user may either restore or permanently delete the selected channel/program information from the list by choosing a button labeled restore ( 47 ) or delete ( 48 ). By selecting the restore button ( 47 ), the selected channel(s) and/or program(s) from the deleted channel/program information list is restored back to the pre-selected list of channels and/or program(s). Furthermore, by selecting the delete button  48 , the selected channel/program information from the deleted channel/program information list is permanently deleted. 
     To facilitate browsing through the list of pre-selected channel/program information, a different presentation could be used to identify the currently viewed program from other channel(s) and/or program(s). For example, if a user is currently watching a program in channel 7 and decides to browse the list of pre-selected channel/program information, channel 7 on the pre-selected list would be identified distinguishable from other channel(s) and/or program(s). Such an identification can be accomplished through various means such as by the use of color, highlight, font type, or font size. Furthermore, in addition to showing the channel identification, the broadcast station identification, the signal reception status, the picture-in-picture, the Electronic Program Guide (EPG), etc. could also be used to facilitate browsing. The device of  FIG. 1  can be a digital TV, and the data storage  19  can be a hard disk drive or EEPROM (Electrically Erasable Programmable Read Only Memory). 
     As described above, the present invention relates to a video display device and a method of managing a list of channel/program information. Traditionally, when a user deletes channel/program information, information pertaining to the channel/program was permanently deleted automatically so that the deleted information could not be restored at all once deleted. However, in the present invention, even if a user deletes a certain channel/program information, the information is not permanently lost. Rather, the deleted channel/program information is stored in a specified section of the data storage thereby allowing the user to later access the deleted information and choose to either restore or permanently delete the once-deleted channel(s) and/or program(s). 
     It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. Thus, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.