Abstract:
An apparatus and method for browsing and viewing television programs while viewing a television program guide. In other words, a user is able to remain inside the program guide while viewing various television programs. In another aspect, a server system operator is provided an interface with flexible options for configuring user controls for viewing television programs while inside program guides in client devices.

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is a divisional of U.S. patent application Ser. No. 09/590,925, filed Jun. 9, 2000, now U.S. Pat. No. 6,817,028 issued on Nov. 9, 2004, which claims the benefit of U.S. Provisional Application Ser. No. 60/138,757, filed Jun. 11, 1999, which is hereby incorporated by reference herein in its entirety. 
    
    
     FIELD OF THE INVENTION 
     This invention relates in general to television systems, and more particularly, to the field of interactive program guides. 
     BACKGROUND OF THE INVENTION 
     Historically, television services have been comprised of analog broadcast audio and video signals. Cable television systems now receive broadcasts and retransmit them with other programming to subscribers over land-line networks, typically comprising fiber optic cable and/or coaxial cable. With the recent advent of digital transmission technology, cable television systems are now capable of providing much more than the traditional analog broadcast video. In addition, two-way and advanced one-way communications between a subscriber and a cable system headend are now possible. 
     In implementing enhanced programming, the home communication terminal (“HCT”), otherwise known as the settop box, has become an important computing device for accessing video services and navigating a subscriber through a maze of services available. In addition to supporting traditional analog broadcast video and functionality, digital HCTs (or “DHCTs”) now also support an increasing number of services which are not analog, but rather digital; are not basic broadcast, but rather two-way communication such as video-on-demand; and are not basic video, such as e-mail or web browsers. These are all in addition to the host of other television services which are increasingly being demanded by consumers, examples of which include audio and audio/visual programming, advance navigation controls, impulse pay-per-view technology, and on-line commerce. In addition to the interactive services, the increased bandwidth available through a digital television system has made it possible for a subscriber to have access to hundreds, or even thousands, of channels and/or services. Thus, in order to provide these more powerful and complex features, the simple conventional channel abstractions need to be extended beyond those which have traditionally been provided. 
     Each HCT and DHCT (collectively hereinafter “DHCT”) are typically connected to a cable or satellite television network. The DHCTs generally include hardware and software necessary to provide the functionality of the digital television system at the client&#39;s site. Preferably, some of the software executed by a DHCT is downloaded and/or updated via the cable television network. Each DHCT typically includes a processor, a communication component and memory, and is connected to a television or other display device, such as a personal computer. While many conventional DHCTs are stand-alone devices that are externally connected to a television, a DHCT and/or its functionality may be integrated into a television or personal computer, as will be appreciated by those of ordinary skill in the art. 
     As more and more services and applications are provided, cable television systems are providing television program information to the DHCT so that the subscriber can view the program information on the DHCT display such as the television. This program information has traditionally been organized for presentation purposes into a program guide format that presents the program information by time and channel only. The program guide can, for instance, automatically scroll the available television channels to present the program information such as name and title, by time. 
     Many cable system operators include one or more dedicated channels that scroll through the channel list displaying the programs that not only are currently on, but also are scheduled to be on in the future. These types of passive displays do not rely on a terminal for presentation of the programming data and also lack the interactive functionality of permitting a subscriber to scroll to a desired channel for a desired time. For example, the subscriber typically must view the programming information as it scrolls on the display and wait for either the desired channel and/or the desired time to search for the program that may be available for viewing. 
     With the advent of program guide “browsers” for use in cable television systems, viewers (also referred to as “subscribers” or “users”) can literally scan program information by time and channel while watching the tuned channel. In analog systems that offer a limited number of cable television channels, these browsers enable the viewer to easily scan available programs one-by-one in order of channel number. However, many digital systems can provide hundreds or even thousands of channels. In such systems, viewers may be only familiar with a small fraction of the television programs available for viewing. As a result, viewers may end up spending significant amounts of time browsing through on-screen program guides in order to determine which program they would enjoy watching the most. This may be inconvenient since either the viewer browsing the program guide or other viewers in the same room may be missing a desirable alternative program while the program guide is being browsed. In addition, program descriptions in on-screen program guides often do not provide a viewer with enough information to be able to determine whether he or she would enjoy watching a particular program. 
     SUMMARY OF THE INVENTION 
     Briefly described, one preferred embodiment of the present invention provides an apparatus and method for browsing and viewing different television programs while browsing a television program guide. In other words, a user is able to remain inside the program guide while viewing various television programs. In another aspect of a preferred embodiment of the present invention, a server system operator is provided an interface with flexible options for configuring user controls for viewing television programs while inside program guides in client devices. 
     Other objects, features, and advantages of the present invention will become apparent to one with skill in the art upon examination of the following drawings and detailed description. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention can be better understood with reference to the following drawings. The components in the drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the present invention. In the drawings, like reference numerals designate corresponding parts or screen areas throughout the several views. 
         FIG. 1  is a block diagram of a cable television system in accordance with one preferred embodiment of the present invention. 
         FIG. 2  is a block diagram of a DHCT and related equipment, in accordance with one preferred embodiment of the present invention depicted in  FIG. 1 . 
         FIG. 3  is a diagram depicting files that are transferred from the headend of the cable television system across to the DHCT depicted in  FIG. 2 . 
         FIG. 4  is a diagram of a control menu for a system operator at the headend to configure how the reduced screen area of an interactive program guide will be tuned by a client device in accordance with the present invention as depicted in  FIG. 2 . 
         FIG. 5  is an example screen diagram that illustrates an initial guide arrangement in a time format that the DHCT as depicted in  FIG. 2  presents to the subscriber. 
         FIG. 6  is an example screen diagram that illustrates how the tuning of the reduced screen display area does not follow the in-focus television program as the screen transitions from that shown in  FIG. 5 . 
         FIG. 7  is an example screen diagram that illustrates the tuning of a reduced screen display area to the channel of the in-focus television program in  FIG. 6 . 
         FIG. 8  is an example screen diagram that illustrates the tuning of a reduced screen display area to the next higher numbered channel than the channel of the in-focus program in  FIG. 7 . 
         FIG. 9  is an example screen diagram that illustrates the tuning of a reduced screen display area to a channel number specified through user input received by the DHCT as depicted in  FIG. 2 . 
         FIG. 10  is a block diagram of an example of a remote control device for use with the DHCT depicted in  FIG. 2 . 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       FIG. 1  is a block diagram of a cable television system  10  including a headend  11  for receiving television signals, such as satellite television signals, and converting the signals into a format for transmitting the signals over the system  10 . The transmitted signals can, for example, be radio frequency (RF) signals or optical signals, as shown, transmitted over fiber optic cable  12 . When the optical signals are transmitted by the headend  11 , one or more optical nodes  13  are included in the system  10  for converting the optical signals to RF signals that are thereafter routed over other media, such as coaxial cables  14 . Taps  15  are provided within the cable system  10  for splitting the RF signal off, via cables  17 , to subscriber equipment such as DHCTs  16 , cable-ready television sets, video recorders, or computers. Thus, headend  11  is connected through a network  20  to multiple DHCTs  16 . 
       FIG. 2  is a block diagram illustrating the DHCT  16  and other system equipment. The DHCT  16  is typically situated within the residence or business of a subscriber. It may be integrated into a device that has a display  21 , such as a television set, or it may be a stand-alone unit that couples to an external display  21 , such as a display included in a computer or a television, and that processes television signals for presentation to a subscriber. The terminal  16  preferably comprises a communications interface  22  for receiving the RF signals, which can include video, audio and data information, from the tap  15  and for providing any reverse information to the tap  15  for transmission back to the headend  11  ( FIG. 1 ). The DHCT  16  further includes a processor  24  for controlling operations of the DHCT  16 , a video output port such as an RF output system  28  for driving the display  21 , and a tuner system  25  for tuning into a particular television channel to be displayed and for sending and receiving various types of data from the headend  11 . The tuner system includes in one implementation, an out-of-band tuner for bi-directional quadrature phase shift keying (QPSK) data communication and a quadrature amplitude modulation (QAM) tuner for receiving television signals. Additionally, DHCT  16  includes a receiver  26  for receiving externally-generated information, such as subscriber inputs or commands from other devices. The DHCT  16  may also include one or more wireless or wired communication interfaces, also called ports, for receiving and/or transmitting data to other devices. For instance, the DHCT may feature USB (Universal Serial Bus), Ethernet (for connection to a computer), IEEE-1394 (for connection to media devices in an entertainment center), and serial, and/or parallel ports. The subscriber inputs may, for example, be provided by a computer or transmitter with buttons or keys located on the exterior of the terminal, by a hand-held remote control device  27  (an example of which is shown in  FIG. 10 ), or by a keyboard that includes subscriber-actuated buttons. With brief reference to  FIG. 10 , among other keys, examples of keys on the remote control device  27  include, without limitation, numeric channel indication keys, or buttons, e.g., keys labeled “0”-“9”, non-numeric channel indication keys (channel increment (CH+), channel decrement (CH−), favorite channel (FAV), last channel (LAST)), and directional keys with arrows (UP, DOWN, LEFT, RIGHT), a SELECT (SEL) key, and a GUIDE key. 
     Memory  30 , such as a non-volatile and dynamic random access memory, is coupled to the processor  24  and stores operational parameters, such as commands that are recognized by the processor  24 . The most basic functionality of the DHCT  16  is provided by an operating system  31  that operates in memory  30 . One or more programmed software applications, herein referred to as applications, are executed by utilizing the computing resources in the DHCT  16 . The executable application program stored in memory  30  is executed by processor  24  (e.g., a central processing unit or digital signal processor) under the auspices of the operating system  31 . Data required as input by the application program is stored in memory  30  and read by processor  24  from memory  30  as need be during the course of application program execution. Input data may be data stored in memory  30  by a secondary application or other source, either internal or external to the DHCT  16 , or may have been created with the application program at the time it was generated as a software application program. Data may be received via any of the communication ports of the DHCT  16 , from the headend  11  via the DHCT&#39;s network interface (i.e., the QAM or out-of-band tuners) or as subscriber input via receiver  26 . A type of input data fulfills and serves the purpose of parameters as described below. Data generated by application program is stored in memory  30  by processor  24  during the course of application program execution. Availability, location and amount of data generated by a first application for consumption by a secondary application is communicated by messages as described below. Messages are communicated through the services of the operating system  31 , such as interrupt or polling mechanisms or through data sharing mechanisms such as semaphores. 
     A Navigator (application)  33  is responsible for providing the subscriber the capability to select services and also provides a core functionality of the DHCT  16 , including volume and settings. To implement its functionality, the Navigator  33  communicates with a platform  35 , which is a collection of functionality such as the services application manager (SAM)  36 , a Configuration Manager  42 , and a Window Manager  45  that is useful to the applications. The platform  35  may also include such functionality as a Timer Manager, a Compression Manager, an HTML Parser, a Database Manager, A Widget Toolkit, and other utilities (not shown). 
     In one implementation, the Window Manager  45  maintains, among other things, a user input registry  32  so that when a subscriber enters a key or a command via the remote device  27  or another input device such as a keyboard or mouse, the user input registry  32  is accessed to determine which of various applications running on the DHCT  16  should receive the inputted key and in what order. The Navigator  33  registers for certain user input commands with the Window Manager  45  so that when the subscriber hits a key corresponding to one of the commands on the remote  27 , the command is received by the receiver  26  and relayed to the processor  24 . The processor  24  dispatches the event to the operating system  31  where it is forwarded to the Window Manager  45 , which ultimately accesses the user input registry  32  and routes the incoming command to the Navigator  33 . The Navigator  33  registers for user input commands that correspond to service navigation functions such as selecting a channel (channel increment, channel decrement, favorite, last) and those for other reserved functionality such as a key to activate the program guide, e.g., a GUIDE key. 
     After the Navigator  33  is activated by the remote  27 , it sends a command to a services application manager (“SAM”) component  36  part of the platform  35 . The SAM  36  maintains a services database  37  of all services available on the DHCT  16  that the subscriber may access. A service is a pairing of an application and a parameter, such as a WatchTV application (not shown) and the television program to tune (e.g. NBC), or an Email application (not shown) and the IP address of the Email server. When the SAM  36  receives a query from the Navigator  33 , it accesses the service database  37  and informs the Navigator  33  about the existence and status of the requested service. The Navigator  33  can further query the SAM  36  to determine if the service is authorized for the DHCT  16  and, if so, subsequently command the SAM to activate the service. In response, the SAM  36  initiates an activate service message to the application identified in the service database as the provider of the desired service. As a non-limiting example, the subscriber pressing a “GUIDE” key on the remote  27  would activate the interactive program guide (application)  38 . That is, the subscriber presses a first key that invokes display of an interactive program guide (IPG)  38  presentation session. 
     The IPG  38  displays a program guide to the subscriber and populates the guide with program data for selection. Contained in the IPG  38  is a user interface component  39  that controls the screen display presented to the subscriber on display  21 . When the user interface  39  receives the activation message from the SAM  36 , the user interface  39  proceeds in accessing an IPG database  40  and a configuration module  41  to determine the appropriate program guide configuration (initial guide arrangement or view) to present to the subscriber on the display  21 . The IPG database  40  contains program data files of current and future television programs. An IPG configuration module  41  stores settings that the user interface  39  will implement in creating the display for the subscriber. According to the preferred embodiment of the present invention, the IPG configuration module  41  includes a configuration database  43  of all configurations relevant to the IPG  38 . The configuration library  42  allows applications to access configurations stored in other applications, such as the IPG configuration database  43 . Some of these configurations are pre-loaded into DHCT  16  non-volatile memory before it is released to a subscriber for use in viewing television services. Additionally, configurations can be updated, added, or replaced in the DHCT  16  by communicating the configuration data files  54  ( FIG. 3 ) from the headend  11  to Configuration Daemon  44  which writes the configuration data files  54  to the various application configuration databases, such as the IPG configuration database  43 . Although the IPG configuration database  43  provides a variety of initial configurations that the IPG user interface  39  may implement, one of these is denoted as the selected configuration that is ultimately implemented by the user interface  39 . The configuration daemon  44  on the platform  35  will update the application configuration databases, such as IPG configuration database  43 , whenever the DHCT  16  is powered up or when the configuration daemon  44  receives an update message from the headend  11  with new settings for the configurations. 
     When the IPG user interface  39  receives the activate service command from the SAM  36  responsive to a user selecting the IPG from the remote  27 , the IPG user interface  39  accesses the IPG configuration module  41  to determine which viewing arrangement to present to the subscriber on the display  21 . Based on the configuration information stored in the configuration module  41 , the user interface  39  utilizes the window manager  45  and other graphics utilities provided by the operating system  31  to draw the screen on the display  21 . The window manager  45  is a component that in one embodiment is part of the platform  35 , but in other embodiments may be part of the operating system  31 . In addition to the user input registry mentioned previously, it contains functionality for managing screen real-estate and synchronizing the drawing done by multiple applications. The operating system  31  provides primitives to the user interface  39  to, for example, to create a rectangular region on display  21  and to draw into that rectangle graphics utilities such as lines, shadings and strings. 
     As a window is created on display  21  for presentation to the subscriber, the IPG user-interface  39  registers with the window manager  45  for particular user input commands that are required by the newly-created window on the display  21 . The IPG  38  also contains a daemon  46  that receives program data files  53  from the headend  11 , and the daemon  46  stores the program data files  53  in the database  40  for utilization by the user interface  39 . 
     The Navigator application  33 , IPG  38 , and all other applications executed by the resources of the DHCT  16  comprise an ordered listing of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. In the context of this document, a “computer-readable medium” can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. The computer readable medium can be, for example, but is not limited to, an electronic, solid-state, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, device, or propagation medium, either internal to the DHCT  16  or externally connected to the DHCT  16  via one or more communication ports or network interfaces. More specific examples (a nonexhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic) having one or more wires, a portable computer diskette (magnetic), a hard drive storage device (magnetic) a random access memory (RAM) (solid-state device), a read-only memory (ROM) (solid-state device), an erasable programmable read-only memory (EPROM or Flash memory) (multiple devices), an optical fiber (optical), and a portable compact disc read-only memory (CDROM) (optical). Note that the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory. Furthermore, any process descriptions or blocks in flow charts should be understood as representing modules, segments, or portions of code or programmed software which include one or more executable instructions for implementing specific logical functions or steps in the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention. 
       FIG. 3  is a diagram of selected components resident on the headend  11  and their interaction with the DHCT  16  on the client side of the network  20 . An IPG server  51  is contained on the headend  11  and assembles program data files  53  for transmission across the network  20  to the IPG daemon  46  ( FIG. 2 ) in the DHCT  16 . The program data files  53  are the data files that contain information about current and of future programs, including their prospective viewing times, descriptive information, channels etc. The IPG server  51  allows the system operator to configure how many days in advance for which the program data files  53  will contain programming information. A configuration server  52  maintains and transmits across network  20  configuration data files  54  that comprise a plurality of program guide arrangement definitions, as well as indication of a selected initial program guide arrangement for the display  21 . 
     With reference to  FIG. 2 , the configuration daemon  44  receives the configuration information and stores it in the IPG configuration database  43  from which configuration module  41  accesses the information, as discussed above. The program data files  53  ( FIG. 3 ) created by the IPG server  51  on the headend  11  are received by the IPG Daemon  46  which populates the IPG database  40  in memory  30  with the program data files  53  for utilization by the user interface  39  when commanded by the subscriber. Alternatively, the IPG database  40 , or parts thereof may be stored in a storage device that is internal to the DHCT  16  or externally connected to the DHCT  16  via a communication port such as USB or IEEE-1394. 
     In  FIG. 2  and  FIG. 3 , functionality of the various layers of software, including the operating system  31 , platform  35 , and applications such as the IPG  38  and Navigator  33  are generally present on both the client side and the server side of the cable television system. The Navigator  33  assists in providing basic cable services and navigation framework to the subscriber. The services available can include watching television and pay-per-view events, listening to digital music, and viewing the interactive program guide  38  ( FIG. 2 ). The Navigator  33  also allows subscribers to access the settings in the DHCT  16  ( FIG. 2 ), including volume, parental control, VCR commands, etc. The operating system  31  is a resident operating system on the DHCT  16  and is provisioned for reception of multi-media data over the broadcast and interactive cable networks and uses an open and modular platform to allow flexibility and customization. As a result, some features of the operating system  31  include real time multi-media data reception, streaming and processing, as well as multi-tasking capability, and an open platform. The operating system  31  also provisions the communication of data among different entities such as a multiplicity of applications executing in the DHCT  16 . The application interface system (AIS) or Platform  35  is a collection of end-to-end software interfaces enabling applications on the cable televisions system network  10 . The SAM  36  provides an interface and mechanism through which applications can be developed, introduced on the network, defined as a service, downloaded to the DHCT  16 , executed on the DHCT  16  and removed from the network. The AIS is an end layer of application and service management software components that an application must utilize to exist in the cable television system network  10 . It also consists of resource access and management components generally required by applications in the cable television system network  10 . None of the AIS components have any client-side subscriber-interfaces, although graphical subscriber interfaces can exist to access server-side components. 
       FIG. 4  is a diagram of a control menu  64  for a system operator at the headend  11  to configure how a reduced screen display area of the IPG user interface  39  will be controlled, in accordance with the present invention as depicted in  FIG. 2 . In one implementation, a system operator can use the menu to select the desired settings for the reduced screen display area. These settings will determine how the reduced screen display area will be tuned in relation to the television program information that will be presented to a subscriber and in relation to input received by the DHCT  16  ( FIG. 2 ) from a subscriber. These selections are communicated across the system network  20  to each individual DHCT  16 . The settings and factors that determine which channel a reduced screen display area is tuned to are discussed in more detail below. Of course, many other arrangements and expressions of the options shown in  FIG. 4  are considered to be within the scope of the present invention. In addition, an alternative embodiment of the present invention permits the subscriber to determine how the reduced screen display area will be tuned in relation to the television program information that is to be presented to a subscriber and in relation to subsequent subscriber input. 
     Regarding the implementation shown in  FIG. 4 , as discussed in more detail below, settings are first included for determining whether and how “in-focus” (highlighted) or “selected” (responsive to a SELECT key being pressed) program titles in the interactive program guide affect the reduced screen. A user typically moves a highlighted cursor around the interactive program guide using the arrow keys (UP, DOWN, RIGHT, LEFT) on the remote control  27 , thus changing the “in-focus” program. In addition, the interactive program guide can be configured to use numeric and/or non-numeric channel keys to exit the interactive program guide and turn to the requested channel, tune the reduced screen to the requested channel, or make the requested channel the “in-focus” channel within the interactive program guide (which would then cause such keys to defer to the setting of the above selection regarding the effect of the “in-focus” indication. 
       FIG. 5  is an example screen diagram of the IPG display  70  that illustrates an initial guide arrangement in a time format that the DHCT  16  as depicted in  FIG. 2  presents the user. The top left portion of the main IPG display  70  is a detailed focus area  71  that includes detailed channel information (channel number, channel name (ABC), program name, program description, duration, any episode information or rating, etc.) for an “in-focus” program corresponding to highlighted program area  72  in a main program display area  76 . Video showing on the channel to which the DHCT  16  is currently tuned (for which audio is also playing, and which is typically the program occupying the full screen before the IPG  38  is activated) is displayed in a roughly one-quarter screen reduced screen display area  73  in the IPG display  70 . Immediately below the reduced screen display area  73  is an information banner  74  depicting the channel to which the DHCT  16  is currently tuned, the current day and date, and the current time. The middle left portion of the IPG display  70  includes a channel area  78  that is related to the selected ordering format and is described in more detail below. The middle portion of the IPG display  70  includes a heading area  77  that contains headings related to the information displayed in the channel area  78  and the main program display area  76 . The main program display area  76  contains television program titles corresponding to television programs that are or will be available for viewing during the time periods listed the heading area  77 . The highlighted program area  72  is centered in the main program display area  76  enabling the subscriber to scroll up and down to the various program titles listed in the main program display area  76 . 
     The main program display area  76  includes program names, or titles, organized in a grid of rows of channels and columns of time. The channel area  78  includes a vertical list of channels organized sequentially from top to bottom by increasing channel number. The main program display area  76  can be scrolled with the arrow keys on the remote control  27  in both time and channel number dimensions. The time dimensions are a horizontal array of program names categorized in columns of times in which they are broadcast. As the subscriber scrolls in time across a calendar day boundary, the selected day displayed in various areas is automatically updated. 
     When the IPG  38  ( FIG. 2 ) is first activated by the subscriber and the time view is configured to be the initial view, the first, or lowest, channel, including channel name and number, in the channel lineup is centered in the channel area  78  of the IPG display  70 . In this non-limiting example, the lowest channel in this channel list displayed in the channel area  78  is ABC, which is shown as channel  2 . Continuing with this non-limiting example, the left-most time column in the main program display area  76  is set to include titles of programs scheduled to be broadcast about two hours into the future with the middle title being “in-focus” and corresponding to a program on the lowest available channel. Therefore, in this example, the program ABC news which is on channel  2 , is centered in the highlighted program area  72 . It should be noted that the current program shown in reduced screen display area  73  and referenced in information banner  74 , corresponds to channel  10  and not to the in-focus program on channel  2 . The bottom area  75  of IPG display  70  indicates the selected day for which program data is being displayed as well as the options for the “A”, “B”, and “C” keys on the remote  27  ( FIG. 2 ). The “A” key is assigned to invoke a “Browse-by” menu which would enable subscribers to select alternative program guide arrangement views such as, for example, program guides containing television program information arranged on the basis of title or theme. The “B” key enables the subscriber to select an alternative date for which television program information is presented. Operation of the “C” key results in the program currently showing on the channel to which the DHCT is tuned becoming the “in-focus” program; thus, the displaying of television program titles in the main program display area  76  which correspond to television programs that are or will be playing during an aggregate time period that includes the current time. The time periods listed in the heading area  77  are updated accordingly so that the time period listed above the left most column of the main display area  76  includes the current time. 
       FIG. 6  is an example screen diagram of the IPG display  80  that illustrates how the tuning of the reduced screen display area  73  operates when the “REDUCED SCREEN TUNING UNRELATED TO IN-FOCUS CHANNEL” option in  FIG. 4  is selected by a system operator at the headend. Under this scenario, by pressing a down arrow on the remote  27  ( FIG. 2 ), a subscriber can cause the DHCT  16  to scroll through the IPG display  70  ( FIG. 5 ) so that, in effect, the IPG display  80  as shown in  FIG. 6  is displayed. Therefore, in this example, the program The Drew Carey Show, which is on channel  3 , is centered in the highlighted program area  72 . Notice that the channel number in information banner  74  still indicates channel number  10 . This indicates that the reduced screen display area  73  is still tuned to channel  10  and that merely scrolling through the channel area  78  by the subscriber did not affect the tuning of the reduced screen display area  73 . A similar result would occur if the “SELECTED IN-FOCUS CHANNEL DETERMINES REDUCED SCREEN” option were instead selected by the system operator. However, the results would change to those shown in  FIG. 7  if the user then pressed the SELECT key on the remote  27  ( FIG. 2 ). According to the shown embodiment, the current program is not the same as the “in-focus” program since they are approximately two hours apart. In other embodiments, an additional notice or menu will appear notifying and requesting confirmation that the user wishes to tune the reduced display area  73  to the current program on the selected channel. 
       FIG. 7  is also an example of the IPG display  90  that illustrates how the tuning of the reduced screen display area  73  operates while the “IN-FOCUS CHANNEL DETERMINES REDUCED SCREEN” option as illustrated in  FIG. 4  is the active selection. Under this scenario, moving between  FIG. 5  and  FIG. 7  with the use of a down arrow on remote  27  ( FIG. 2 ), the reduced screen display area  73  is tuned to channel  3  as indicated in the information banner  74  after the subscriber scrolls down to channel  3  in the channel area  78 . It should be noted that if a subscriber scrolls quickly through the channels in the channel area  78 , the reduced screen display portion  73  will not tune to the channel corresponding to the television program in the highlighted area  72  until after the subscriber has stopped scrolling for a predetermined amount of time, e.g., half a second. 
       FIG. 8  is an example of the IPG display  100  that illustrates how the tuning of the reduced screen display area  73  operates while the “NON-NUMERIC CHANNEL SIGNALS: TUNE REDUCED SCREEN TO REQUESTED CHANNEL” option in  FIG. 4  is active, as transitioned from  FIG. 7 . Under this example scenario, after a subscriber uses the remote  27  ( FIG. 2 ) to send the non-numeric channel key signal for “channel up,” such as a CH+ key on the remote, to the DHCT  16  as depicted in  FIG. 2 , the reduced screen display area  73  is tuned to channel  4  to display the current program on that channel as indicated in the information banner  74 . If a subscriber were to send a “channel down” signal instead of a “channel up” signal, then the reduced screen display area would be tuned to channel  2  instead of channel  4 . Likewise, the LAST and FAV keys would cause the last and favorite channels, as tracked by the navigator application  33  in the DHCT  16  ( FIG. 2 ), to be tuned to display the current program on that channel in the reduced screen display area  73 . Of course, if the “NON-NUMERIC CHANNEL SIGNALS: EXIT IPG AND TUNE TO REQUESTED CHANNEL” option in  FIG. 4  is active, pushing the “channel up” key, for example, on the remote  27  ( FIG. 2 ) would cause the IPG display  90  to disappear, and channel  4  would be tuned in full screen. Other non-numeric channel keys would likewise prompt similar results. However, if the “NON-NUMERIC CHANNEL SIGNALS: CHANGE IN-FOCUS CHANNEL TO REQUESTED CHANNEL” option in  FIG. 4  is active, operation of any of the non-numeric channel keys would cause the current program on that requested channel to become the “in-focus” program, which may or may not affect the reduced screen display area  73  depending on the setting of the “IN-FOCUS CHANNEL DETERMINES REDUCED SCREEN” option, as discussed above. 
       FIG. 9  is an example of the IPG display  110  that illustrates how the tuning of the reduced screen display area  73  operates while the “NUMERIC CHANNEL SIGNALS: TUNE REDUCED SCREEN TO REQUESTED CHANNEL” option in  FIG. 4  is active, as transitioned from  FIG. 7 . Under this scenario, after the subscriber uses the numeric “6” and “2” keys on the remote  27  ( FIG. 2 ) to select channel  62 , the reduced screen display area  73  is tuned to channel  62  as indicated in the information banner  74 . Likewise, if the “NUMERIC CHANNEL SIGNALS: EXIT IPG AND TUNE TO REQUESTED CHANNEL” option in  FIG. 4  is active, entering any channel numbers will cause the IPG display  90  to be removed from the screen, leaving the full screen tuned to the entered channel number. Furthermore, if the “NUMERIC CHANNEL SIGNALS: CHANGE IN-FOCUS CHANNEL TO REQUESTED CHANNEL” option is active, the program currently on that requested channel will become the “in-focus” channel, with the “IN-FOCUS CHANNEL DETERMINES REDUCED SCREEN” option determining whether such change in focus affects the reduced screen area  73 . 
     An alternate embodiment of the invention provides a menu display accessed via the remote to allow the user to swap the position of the reduced screen area  73  and “in-focus” program information area  71  such that  71  is on the right and  73  on the left. 
     Additionally, an alternate embodiment of the invention includes the navigator application  33  applying the configurations for  FIG. 4  “NON-NUMERIC CHANNEL SIGNALS” and “NUMERIC CHANNEL SIGNALS” to other applications that display on a portion of the screen with a reduced screen area showing the DHCT  16  channel as in reduced screen area  73 . In a non-limiting example, an email application may be activated via the SAM and the current channel displayed reduced in the upper right ¼ screen. If the “NON-NUMERIC CHANNEL SIGNALS: TUNE REDUCED SCREEN TO REQUESTED CHANNEL” is selected by the system operator, subsequent user remote input for non-numeric channel keys such as CH+, CH−, LAST, FAV will change the channel in the reduced screen as directed via the remote command. Or, if “NON-NUMERIC CHANNEL SIGNALS: EXIT IPG AND TUNE TO REQUESTED CHANNEL” is selected by the system operator, subsequent user remote input for non-numeric channel keys such as CH+, CH−, LAST, FAV will exit the application and change the channel in the reduced screen as directed via the remote command. Similarly, the numeric channel signals configuration is interpreted by the navigator  33  as well. 
     It should be emphasized that the above-described embodiments of the present invention, particularly, any “preferred embodiments” are merely possible examples of the implementations, merely set forth for a clear understanding of the principles of the inventions. Many variations and modifications may be made to the above-described embodiments of the invention without departing substantially from the spirit of the principles of the invention. All such modifications and variations are intended to be included herein within the scope of the disclosure and present invention and protected by the following claims.