CN1154522A - Entertainment system for portable computer - Google Patents

Abstract

To provide an entertainment system to computer,a portable computer is provided with a multi-media entertainment system wherein all hardware including electronic circuits and other components for the entertainment system are fully integrated in a notebook computer. The invention integrates television electronics , AM/FM radio circuits, a CD- ROM (compact disk-read only memory) drive, miniaturized 8-mm VCRinto a notebook computer, such as an IBM Thinkpad 750C computer. Software running on the notebook computer provides a graphical user interface wherein the user can use a key stroke, mouse, or track point to tune to different channels or adjust the volume, brightness, contrast, or play, stop/eject, fast-forward, pause, and rewind using icons which mimic controls that might be found on a conventional television, radio, VCR or CD-ROM drive.

Description

Laptop entertainment system

The present invention relates generally to lightweight portable computers, and more particularly to an entertainment system fully integrated into a portable computer and supported by software running on the computer.

Small portable computers, sometimes called notebook computers, are used in a wide variety of demanding environments because of their efficiency and convenience. Advances in computer technology have allowed notebook computers to be miniaturized and powerful enough to be used in many different physical environments such as the home, the vehicle, and even the outdoors.

Notebook computers are often carried while traveling by professional or business users. In this case, especially at airports, users have a lot of time when they are just killing time. Therefore, it would be advantageous to integrate an entertainment system into a notebook computer to allow a user waiting to board a plane to watch television, watch a movie, or listen to music.

In the past, devices have been developed for the passing of time and entertainment of travelers. For example, US Patent 4,521,021 to Dixon shows a video game station for an airplane in which a video console is attached to the back of the seat to form a station for playing video games from a video cassette. For entertainment, this solution is not portable and is limited to playing video games in a passenger vehicle so equipped.

US Patent 4,866,515 shows a passenger service and entertainment system for providing multi-frequency transmission of video, audio and video game software signals to user seats. The system consists of a central transmitter and a plurality of cathode ray tube (CRT) or liquid crystal display (LCD) terminals mounted on seats such as airplane seats, stadium seats or theater seats. The central transmission device of the system distributes video signals, audio signals and video game software signals to the terminal units through multi-frequency multiplexing. The central transmitter and each terminal are permanently located at fixed locations.

Similarly, desktop computers combined with televisions have been experimented with in the past in very limited applications. For example, US Pat. No. 5,374,952 shows a video conferencing system for fixed-location computer workstations operating on a local area network, exchanging data and sending cable TV signals over coaxial cable TV wiring.

Similarly, U.S. Patents 5,359,367, 5,249,164 and 5,283,819 give TV-capable personal desktop computer. The obvious disadvantage of all these devices is that the personal computer cannot be carried around. In addition, only part of the hardware is included, so the user still needs to provide the necessary video signal source, such as an external antenna or video cassette recorder (VCR) input, in order to function.

It is an object of the present invention to provide an entertainment system fully integrated into a computer and supported by software running on the computer.

According to the present invention, all the hardware (including electronics and other components) for the entertainment system are fully integrated in the notebook computer. More specifically, the present invention integrates television circuitry, AM/FM radio circuitry, CD-ROM (Compact Disc Read Only Memory) drive, and a small 8 mm VCR (Video Cassette Recorder) into a notebook computer such as the IBM Thinkpad 750C computer . The entertainment system takes advantage of the ultra-high resolution thin film transistor and liquid crystal displays (TFT/LCD) that are already part of modern notebook computers. Therefore, an entertainment system can be integrated into a notebook computer with minimal cost.

The entertainment system includes: television, radio, detachable CD-ROM audio and/or video disc, and detachable 8mm VCR. Software running on a notebook computer provides a graphical user interface in which different channels can be tuned to using keystrokes, a mouse, or a trackball, and simulated by utilizing the channels found in conventional televisions, radios, VCRs, or CD-ROM drives. Control icons to adjust volume, brightness, and contrast. In addition, the software can display the TV image in a separate window on the monitor while displaying information related to running applications in other windows.

The foregoing, as well as other objects, aspects and advantages, will be better understood from the following more detailed description of the best mode of the invention, taken in conjunction with the accompanying drawings.

Fig. 1 is a block diagram according to the entertainment system structure of the present invention;

FIG. 2 is a drawing of a notebook computer with integrated TV and AM/FM radio circuits according to the entertainment system of the present invention;

Figure 3 is a drawing of the notebook computer shown in Figure 2 with the floppy disk drive replaced by a VCR or CD-ROM drive;

Figure 4 is a drawing of the notebook computer shown in Figure 2 with a VCR replacing the floppy disk drive and a CD-ROM drive replacing the removable hard disk drive;

5 is a block diagram showing the video and audio circuits of the television receiver of the entertainment system;

6 is a block diagram of a radio of an entertainment system;

7 is a block diagram showing a combined audio output of an entertainment system;

Figure 8 is a logic flow diagram of the software for controlling the entertainment system running on the notebook computer;

Figure 9 is the main selection screen of the entertainment system;

Figure 10 shows a TV control graphical user interface screen;

11A-11B are flow diagrams showing the logic of software running on a notebook computer to control a television receiver;

Figure 12 shows an AM/FM radio control graphical user interface screen;

Figure 13 is a flow diagram of the logic of the software running on the notebook computer to control the AM/FM radio;

Figure 14 shows a combined VCR/CD-ROM control GUI screen;

Figure 15 is a flowchart showing the logic of the software running on the notebook computer to control the CD-ROM drive; and

Figure 16 is a flow diagram of the logic of the software controlling the VCR running on the notebook computer.

Referring now to the drawings, and more particularly to FIG. 1, there is shown a system block diagram of an entertainment system integrated into a notebook computer according to a preferred embodiment of the present invention. As shown in FIG. 1 , television receiver 1 and accessory circuitry receive a plurality of broadcast television signals from one of an external source connected to jack 3 or antenna 5 to provide a television picture that can be displayed internally on computer monitor 2 . Setting up the internal antenna is important because in order to be fully portable, a constant source of the broadcast signal must be available. In the preferred embodiment of the invention, the display used is a 12.1 inch color thin film transistor/liquid crystal display (TFT/LCD), as used in IBM Thinkpad notebook computers.

An 8 mm VCR 7 or CD-ROM drive 8 provides alternate video sources. Each of the television receiver 1, the 8 mm VCR 7 and the CD-ROM 8 is connected to the display 2 via the system bus 9 of the notebook computer. The 8mm VCR7 can be made inside a notebook computer, but is generally added to it as a removable component, as indicated by the dotted line. The CD-ROM drive 8, which is also available inside the notebook computer but is generally a removable component, is capable of playing computer CD-ROMs, audio CDs and newer MPEG video CDs.

Antenna 5 is also connected to AM/FM receiver 4 . Audio output for AM/FM receiver 4 And the audio outputs of the television receiver 1, 8 mm VCR 7 and CD-ROM drive 8 are provided to the audio circuit 6 which provides an output to a speaker 63 or alternatively to headphones (not shown).

The notebook computer includes a system processor 10, such as an Intel Pentium(R) or IBM PowerPC(R) microprocessor. The system processor is supported by a read only memory (ROM) 11 storing a basic input/output system (BIOS) and a random access memory (RAM) 12 storing part of an operating system (OS) software and application programs. Also, the notebook computer has a hard disk drive 14 with sufficient capacity to support running multimedia programs on the computer. The hard drive 14 can be expanded by a secondary hard drive 15 in the form of a removable assembly, as indicated by the dashed lines. Additionally, it is possible that the floppy disk drive 13 in the notebook computer, but typically provided as a removable component, is arranged to receive input from a replaceable floppy disk.

The software shown in the flowcharts discussed below runs on the system processor 10 to control the display of the telepicture in conjunction with the computer's operating system (OS), which enables the computer to perform other functions concurrently. The TV picture quality, contrast, brightness, volume, and channel selection can be controlled with the mouse (the tracking pointing device in IBM Thinkpad notebooks) or the keyboard. Similarly, software is used to control other multimedia functions, as will be described in more detail.

FIG. 2 is a pictorial diagram of a notebook computer 20 of the type that may integrate an entertainment system according to the present invention. The notebook computer has a TFT display 21 and a keyboard 22 . Externally, the notebook computer is much like any other notebook computer, except for the addition of a retractable antenna 23 conveniently located within the edge of the folded TFT display 21 . It will be appreciated that other types of retractable antennas, such as spring rabbit ears, may also be used. In the preferred embodiment, the television receiver circuit 5 and the AM/FM radio circuit 4 are located behind the TFT display 21 .

3 and 4 show views of the IBM Thinkpad 750C computer with the keyboard 22 lifted to allow access to removable components. In FIG. 3, the battery 16 and hard drive 14 are shown, and the floppy drive 13 is removed to leave space for the 8 mm VCR 7 or CD-ROM drive 8. In the configuration shown in FIG. 4 , the floppy disk drive 13 is replaced by an 8 mm VCR7 and the removable hard disk drive 14 is replaced by a CD-ROM drive 8 . Detachable hardware allows the entertainment system to be housed in a compact, easy-to-carry enclosure and provides the user with Plus entertainment options. The detachable 8mm VCR7 and CD-ROM8 can perform entertainment functions, send video signals to the television receiver 1 circuit for processing and display on the TFT/LCD display 2, send audio signals to the audio circuit 6, or through the small computer system interface (SCSI) and system bus 9 functions as storage devices to communicate with standard ports of the notebook computer such as system microprocessor 10, RAM 12 and serial and parallel ports (not shown) for other computer tasks.

Additional hardware for the notebook entertainment system does not substantially increase power consumption for normal use. This is because TFT/LCD displays 2 used for both computing and entertainment consume the most power of any component (typically 5.65 watts in battery mode and 8.95 watts in AC adapter mode). Other components of the system, whether used in a computer system or an entertainment system, are powered off when not in use to conserve energy.

The combined weight of the television receiver 1, AM/FM receiver 4 and antenna 5 electronics is estimated to be 8 ounces. Since the audio circuitry and TFT/LCD display controller circuitry are already components of the notebook computer, the television receiver 1 and AM/FM receiver 4 radio can use these existing circuits, thus adding minimal weight to the notebook computer.

FIG. 5 shows a detailed block diagram of the television receiver 1 shown in FIG. 1 . The television receiver 1 includes an RF (Radio Frequency) tuner 30 including electronic tuning circuitry, video/audio IF (Intermediate Frequency) and detector circuitry 32, and performs signal conditioning and conversion of NTSC (National Television System Committee) signals to digital RGB ( The local processor 33 of red green blue) signal. To receive broadcast television signals, the antenna 5 picks up the incoming RF signal and the RF tuner 30 tunes the VHF/UHF band. Under software control, the television receiver can be scanned electronically and continuously until the electronic circuitry of the RF tuner 30 acquires a detectable channel. The electronic scanning option with television reception is ideal because a portable entertainment system with a notebook computer can be used where the user is not familiar with television channel selection.

You can also use the keyboard or mouse to directly select the desired TV channel through the software. Once the input RF signal from the antenna 5 is converted into an IF signal, the IF signal output from the RF tuner 30 is sent to an IF amplifier 31 for amplification. The amplified IF signal is then sent to a video/audio IF and detector 32, which can be implemented, for example, by Toshiba's TA8680 integrated circuit or other off-the-shelf electronic components. The video/audio IF and detector 32 is capable of extracting the audio signal from the amplified IF signal as a 4.5 MHz intercarrier component. When the desired output of the audio signal is from the video When the video/audio IF and detector 32 is input to the audio circuit 6 (FIG. 1) for audio processing and output to the speaker 64, the video output signal from the video/audio IF and detector 32 is input to the local processor 33, For further processing and conversion to digital RGB signals, each RGB signal has 6 bits. Provides RGB data to the TFT/LCD controller of the notebook computer display.

External connectors for audio and video input are also available. For example, a camcorder can provide video and audio signals to an entertainment system and use a TFT/LCD display 2 to display its video picture. The external video and audio inputs are connected to a video/audio IF amplifier 31 for further processing of the external video and audio signals in the same manner as broadcast television signals.

Referring now to FIG. 6 , AM/FM radio circuit 41 shares local processor 33 , local bus 34 and antenna 5 with television receiver 1 . The AM/FM radio circuit 41 can be implemented in a single package integrated circuit, which is readily available from Phillips as an off-the-shelf product, such as the radio assembly TEA5757. The notebook computer entertainment system software and local processor 33 help provide the following additional functions from the AM/FM receiver circuit 41 operated by the system's mouse/keyboard 22. These features include automatic electronic tuning, volume, scanning, presets and AM/FM channel selection.

The difficulty in making the combination of entertainment system and notebook computer into a single notebook computer casing lies in encapsulating all the hardware of the entertainment system with the hardware of the notebook computer, because of the limitations of available space and portability of the entire notebook computer system. The solution provided by the present invention is to maximize hardware and circuit sharing; for example, referring again to FIG.

Referring now to FIG. 7 , in a similar manner, a single audio circuit 50 comprising audio mixer 61 , audio amplifier 62 , headphone jack 64 and speaker 63 is shared by all entertainment functions and computer systems. Audio mixer 61 selects audio input from TV audio signal 65, AM/FM radio audio signal 66, 8mm VCR/CD-ROM audio signal 67 or computer audio signal 68, the output of audio mixer 61 is input to the headphone jack 64, and input to the power amplifier 62 to amplify and input to the speaker 63 to provide the sound of the entertainment system.

As mentioned above, software running on the microprocessor is used to control the entertainment functions. 8-15 show software flow diagrams illustrating various user controls for selecting between and controlling various entertainment components. Beginning with block 100 in Figure 8, processing proceeds directly to block 102, where the user is requested to enter a selection of the type of entertainment desired. That is, TV, AM/FM radio, CD-ROM or VCR.

Figure 9 illustrates a graphic selection screen that may be displayed for a user to choose from. In this example, a television has been selected by marking the box 104 adjacent to television selection. Down arrow 106 may be selected if one wishes to exit the entertainment system at this point. The user may make selections, for example, with keystrokes, mouse, trackball (or trackpointer in IBM Thinkpad), touch screen, or any other input device.

Returning to FIG. 8 , if the down arrow of FIG. 9 has been selected, the software exits at block 106 . Similarly, if a television has been selected, the flowchart proceeds to block 108 and at block 110 a television operating window is displayed. If AM/FM radio has been selected, then proceed to block 112 and at block 114 the AM/FM operating window is displayed. If the CD-ROM drive has been selected, then proceed to frame 116, and at frame 118 the CD-ROM operating window is displayed. Finally, if a VCR has been selected, then proceed to block 120 and at block 122 the VCR operating window is displayed.

FIG. 10 shows the TV operation control window 124 and the TV picture window 126 opened on the computer display screen 21 . Note that applications can be running and displayed simultaneously in the background display. The TV operating window 124, as well as all other operating windows described below, are graphical interfaces that display traditional controls found on conventional televisions, including contrast 130, brightness 132, and volume controls 134. Control arrows 136 can be dragged with a mouse or track point to adjust these controls. Channel tuner 126 is used to change television channels. The user simply places the cursor on the tuner 126 and enters the television channel number. Similarly, channel selections can be increased or decreased by tapping the arrow icons placed on each side of the tuner 126 using the arrow icons. Similarly, channels can be scanned by tapping the scan icon 128 . By tapping the corresponding icon 138 or 140, the television audio signal can be routed either to the speakers or to the headphone plug. A preset icon 142 may also be displayed, which is used to reset all controls to default settings.

The flowchart shown in FIGS. 11A and 11B shows the steps continuing from block 200 in FIG. 8 when a television is selected. In step 202, the default size of the television picture selected at 126 in FIG. 10 is set. At decision block 204 , if the user previously preset parameters, such as a locked channel for a particular viewing region, those preset parameters are reviewed at block 206 and the preset television channels are displayed at block 208 . On the other hand, if it is determined at decision block 204 that there are no preset parameters, then at block 210 an auto-tune function is performed, scanning all possible channels, determining their activity, and locking those channels determined to be active, setting default picture parameters, At block 208 the screen is displayed again.

Referring now to FIG. 11B , continuing from block 212 to decision block 214 , user inputs such as channel tuning, channel scanning, volume, brightness, and contrast are read from screen 124 . If such input is detected, the input is read at block 216 and the requested operation is performed at block 218 . The program then returns to the top of decision box 214 .

FIG. 12 shows the AM/FM radio operation window 302 opened on the computer display screen 21. As shown in FIG. AM/FM Radio Operations Window 302 is a graphical interface that displays the conventional controls found on a typical AM/FM radio, including AM/FM Band Selector 304, Volume Control 306, Tuner 308, Scan Control 310, Speaker 312 or Headphones 314 control and preset buttons 316 . Again, the control arrows 136 can be dragged using a mouse or tracker to adjust these controls.

The flowchart shown in FIG. 13 shows the steps continuing from block 300 in FIG. 8 when AM/FM radio is selected. Proceeding to block 320, it is determined whether there are any preset parameters for the controls shown in FIG. If so, then at block 322 the preset parameters are checked. Otherwise, default parameters are set at block 324 . At decision block 326 , if any user input is detected, the input is read at block 328 and the operation entered from the AM/FM radio operation window 302 is performed at block 330 .

FIG. 14 shows the VCR/CD-ROM operation window 402 opened on the display screen 21 of the computer. The VCR/CD-ROM operation window 402 is a graphic interface shared by the VCR function and the CD-ROM function, and the user selects between the two by tapping the VCR box 404 or the CD-ROM box 406 . The TV display window 408, as well as the contrast control 410, brightness control 412, volume control 414, speaker or headphone selection icons 416 and 418, and presets are similar to those described above with reference to the TV operating window 124 shown in FIG. In addition, icons for traditional controls seen on a typical VCR or CD-ROM player are included, such as play 422 , rewind 424 , stop/eject 426 , fast forward 428 and pause 430 . Control arrows 136 may be dragged using a mouse or tracker to adjust these controls.

FIG. 15 shows a flow chart illustrating the steps continued from block 400 in FIG. 8 when CD-ROM is selected. At block 402, the type of operation is read from the user input obtained from the VCR/CD-ROM operation window 402, e.g., play, stop/eject, next, select, pause, fast forward, reverse, speaker, select side A/ B, exit and so on. At decision block 403 , a user input selection from block 402 is detected, and then at block 404 the user input operation is performed.

Figure 16 shows a flow chart illustrating the continuation from block 500 in Figure 8 when a VCR is selected A step of. At block 505, the type of operation, eg, play, stop/eject, next, select, pause, fast forward, rewind, speaker, etc., is read from the user input obtained from the VCR/CD-ROM operation window 502. At decision block 504 , a user input selection from block 502 is detected, and then at block 506 the user input operation is performed.

While the invention has been described in terms of a single preferred embodiment, those skilled in the art will recognize that modifications can be made in practicing the invention within the spirit and scope of the claims.

Claims (26)

1. An entertainment system integrated into a portable computer, said portable computer comprising a built-in microprocessor, a built-in audio circuit and a built-in video display circuit connected to said microprocessor through a system bus, said entertainment system comprising: television receiver; AM/FM radio; a built-in antenna mounted on said portable computer for providing broadcast signals to said television receiver and said AM/FM radio; and at least one component slot for receiving one of a floppy disk drive, a hard disk drive, a compact disk read only memory (CD-ROM) drive, and a video cassette recorder (VCR); The television receiver, the AM/FM radio, and the component slots are connected to the system bus for routing audio signals to the built-in audio circuitry and video signals under software control of the microprocessor transmitted to the built-in video display circuit. 2. The entertainment system integrated into a portable computer according to claim 1, wherein said antenna is a retractable antenna protruding from a display cover of said portable computer. 3. An entertainment system integrated into a portable computer according to claim 2, wherein said telescoping antenna is in the shape of a rabbit ear. 4. The entertainment system integrated into a portable computer of claim 1, wherein said television receiver and said AM/FM radio are mounted in a display cover of said portable computer. 5. The entertainment system integrated into a portable computer of claim 1, further comprising: a keyboard hinged to access said component slot. 6. The entertainment system integrated into a portable computer according to claim 1, wherein said antenna, said television receiver and said AM/FM radio are incorporated in a display cover. 7. The entertainment system integrated into a portable computer according to claim 1, wherein said television receiver, said AM/FM radio, said compact disc read-only memory (CD-ROM) drive, and said box A video recorder (VCR) is controlled through a user-interface graphic screen with icons that mimic a television receiver, AM/FM radio, compact disc read-only memory (CD-ROM) drive, and video cassette recorder (VCR) conventional control. 8. The entertainment system integrated into a portable computer according to claim 1, wherein said built-in audio circuit includes an audio mixer for receiving audio from said television receiver, said AM/FM radio, said One of a compact disc read only memory (CD-ROM) drive and the video cassette recorder (VCR) selects audio input and is used to provide audio output to a power amplifier and one of a speaker and a headphone jack. 9. An entertainment system integrated into a portable computer, said portable computer comprising a built-in microprocessor, an audio circuit and a video display circuit connected to said microprocessor through a system bus, said entertainment system comprising: Built-in TV receiver; Built-in AM/FM radio; a built-in antenna for providing broadcast signals to said built-in television receiver and said built-in AM/FM radio; and a component slot for receiving one of a removable disk drive component, a compact disc read-only memory (CD-ROM) drive, and a video cassette recorder (VCR); The built-in television receiver and the built-in AM/FM radio share common audio circuitry as well as the compact disc read-only memory (CD-ROM) and the video cassette recorder (VCR); The built-in television receiver shares a common video display circuit with the compact disc read only memory (CD-ROM) and the video cassette recorder (VCR). 10. The entertainment system integrated into a portable computer according to claim 9, wherein said antenna is a retractable antenna extending from a display cover of said portable computer. 11. An entertainment system integrated into a portable computer according to claim 10, wherein said telescoping antenna is in the shape of a rabbit ear. 12. The entertainment system integrated into a portable computer of claim 9, wherein said television receiver and said AM/FM radio are mounted in a display cover of said portable computer. 13. The entertainment system integrated into a portable computer of claim 9, further comprising: a keyboard hinged to access said component slot. 14. The entertainment system integrated into a portable computer according to claim 9, characterized in that Where: said antenna, said television receiver and said AM/FM radio are made in a display cover. 15. The entertainment system integrated into a portable computer according to claim 9, wherein said television receiver, said AM/FM radio, said compact disc read only memory (CD-ROM) drive, and said box A video recorder (VCR) is controlled through a user-interface graphic screen with icons that mimic a television receiver, AM/FM radio, compact disc read-only memory (CD-ROM) drive, and video cassette recorder (VCR) conventional control. 16. An entertainment system integrated into a portable computer, including multiple control icons, controllable by user input, and made to simulate a television receiver, AM/FM radio, compact disc read-only memory (CD-ROM) drive, and cassette General control of Video Recorder (VCR), including: A function control for allowing the user to select one of a television receiver, radio, compact disc read-only memory (CD-ROM) drive, and video cassette recorder (VCR); Picture control, for controlling the attributes of the TV picture window opened on the display screen of the portable computer, the picture control includes contrast control and brightness control; audio controls for controlling properties of the audio output, the audio controls including a volume control, a speaker selector, and a headphone plug selector; and Mode control for controlling the compact disc read only memory (CD-ROM) drive and the video cassette recorder (VCR), the mode control includes a play icon button, a stop/eject icon button, a fast forward icon button , rewind icon button, and pause icon button. 17. The entertainment system integrated into a portable computer according to claim 16, wherein said user input is one of a mouse input and a track pointing device input. 18. The entertainment system integrated into a portable computer according to claim 17, wherein said contrast control, said brightness control and said volume control are enabled by said one of mouse input and tracking pointing device input. Drag the icon from the minimum position to the maximum position. 19. Entertainment systems integrated into portable computers, including: one of a television receiver and a radio; and A built-in antenna mounted to the portable computer for providing a broadcast signal to one of the television receiver and the radio. 20. An entertainment system integrated into a portable computer according to claim 19, characterized in that Yu also includes: At least one component slot for receiving one of a floppy disk drive, a hard disk drive, a compact disk read only memory (CD-ROM) drive and a video cassette recorder (VCR). 21. The entertainment system integrated into a portable computer according to claim 19, wherein said antenna is a retractable antenna extending from a display cover of said portable computer. 22. An entertainment system integrated into a portable computer according to claim 21, wherein said telescoping antenna is rabbit ear shaped. 23. The entertainment system integrated into a portable computer according to claim 19, wherein one of said television receiver and said radio is mounted in a display cover of said portable computer. 24. The entertainment system integrated into a portable computer of claim 20, further comprising: a keyboard hinged to access said component slot. 25. The entertainment system integrated into a portable computer according to claim 19, wherein said antenna, and one of said television receiver and said radio are incorporated in a display cover. 26. The entertainment system integrated into a portable computer according to claim 20, wherein one of said television receiver and said radio, said compact disc read-only memory (CD-ROM) drive, and said box A video recorder (VCR) is controlled through a user-interface graphic screen with icons that mimic a television receiver, AM/FM radio, compact disc read-only memory (CD-ROM) drive, and video cassette recorder (VCR) conventional control.

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