TWI466530B - Computer system having telephone functionality and operating method thereof - Google Patents

Description

Computer system with telephone function and operation method thereof

The present invention relates to computer systems, and more particularly to computer systems having integrated telephony functionality.

In recent years, the focus of personal computers has been to integrate several different technologies into a single unit. In addition to providing its traditional functions, personal computers can also incorporate other types of functions such as radio, television, audio production, video production, media (also known as CD or DVD) production and reproduction. In addition, today there are computer systems that can incorporate phone functions.

There are several different uses for incorporating phone functionality into a computer system. For example, a staff member of a call center for a different institution can utilize the incorporated phone feature to talk to a caller while performing other functions on the personal computer. Another use is that an online game player can utilize the incorporated phone function to talk to one or more other players during game play. Furthermore, the phone function can also be used in a manner similar to a stand-alone phone.

There are additional requirements in design, manufacturing, and operation to integrate additional functions such as telephony into a computer system. In the design phase, it is necessary to accommodate additional circuitry that must be included, which may require additional wafers. At the manufacturing stage, it is necessary to allow for the assembly of any additional parts that may be required. As well as during the operational phase, a variety of factors must be allowed, such as additional power consumption.

A computer system that includes a telephone function is disclosed. In one embodiment, the computer system includes a first keyboard and a first display. The computer system also includes a processor having at least a first functional unit and a second functional unit, and includes a telephone portion. The computer system can operate in a first mode, a second mode, or a third mode. In this first mode, only the portion of the phone is turned on. In the second mode, the telephone portion and the first functional unit of the processor are turned on. In the third mode, each of the telephone portion, the first functional unit, and the second functional unit is turned on. Additionally, the computer system can be constructed such that during the first mode of operation, the first and second functional units are turned off, and during the second mode of operation, the second functional unit is turned off.

In one embodiment, the first display is a computer display (such as a monitor or flat display), and the first keyboard is a computer keyboard (such as a standard keyboard configuration QWERTY keyboard). Some embodiments may include a second display for a telephone display. Embodiments including a second keyboard for a telephone operation button set are also possible.

Different levels of operating system functions can operate in different modes. In this third mode, a full-featured operating system (such as Microsoft Windows) can be operated. The third mode may also include utilizing all of the characteristics of the second and first modes. As such, the job in the third mode can use functions that combine the computer system functions, full graphics mode (such as three-dimensional graphics), network (such as email), and telephone. In this third mode, the computer system can be used in a variety of different environments, such as for a customer call center or for online gaming using multiple players, where a full computer mainframe operating system features, network communications, and voice communications are all Also need it.

In this second mode, the function of the operating system is lower than the operating system function requirement of the third mode. In this second mode, certain features are still available, such as network access via a wireless local area network (WLAN), e-mail, digital video broadcasting (DVB-H) for handheld devices, and the like. The characteristics of the phone mode. However, all functions of the operating system cannot be performed in this mode, so for example, online game functions of multiple players may not be possible.

In this first mode, basic telephony features are available, as well as some additional features including .mp3 audio and the Global Positioning Assistant System (AGPS).

Because different modes provide different levels of functionality, portions of the computer system that are associated with certain types of functions may be turned on or off as needed. In summary, the first (ie, phone) mode may require less power than the second mode, which in turn requires less power than the third mode. Thus, during telephony mode operation, the system may not be powered down for portions of the phone mode operation. Similarly, during the second mode of operation, the system may not need to be powered down for portions of the second mode of operation. In this third mode, the power of the entire system can be turned on. By matching the operation of each mode to a specific power demand and turning off the power of the unused part of the system, the functions of each of the different modes can be utilized while saving power.

The specific embodiments of the present invention are illustrated and described in detail by reference to the claims It should be understood, however, that the invention is not intended to be in And deformation.

Referring to Figure 1, an embodiment of a computer system having integrated telephony functionality is shown. It should be noted that the embodiment shown in Figure 1 is only an example, and other examples are possible and contemplated.

In the illustrated embodiment, computer system 100 includes a processor 101, a first display 172, and a first keyboard 158. The processor 101 can be a desktop unit, a tower unit, or any other unit suitable for incorporating the functionality of the computer system. Various system components can be included within the processor 101, such as a motherboard having a central processing unit, various chipset components, memory components, busbars, and various host controllers. The processor 101 can also include a variety of different types of interfaces, such as a universal serial bus (USB) port or the like.

The first display 172 in this embodiment is a flat display. In other embodiments, the first display 172 can be a cathode ray tube (CRT) monitor or any other suitable type of display. In embodiments where the first display 172 is the only display unit present, the first display 172 will provide all of the display functions under each mode job of the system.

The first keyboard 158 includes a standard keyboard configuration keyboard (QWERTY keyboard) included in a typical human computer system. The first keyboard 158 can also include a set of numeric buttons and other buttons for enabling or controlling the particular type of functionality of the computer system. In embodiments where the first keyboard 158 is the only keyboard present, the first keyboard 158 will provide user input for each mode of operation.

Although not explicitly shown, a mouse or other input device (such as a trackball) can also be connected to the processor 101.

In the illustrated embodiment, computer system 100 also includes a baseband unit 136 that provides various functions associated with the first mode of operation of the computer system (hereinafter referred to as the "telephone" mode). The baseband unit 136 can be configured to output a baseband voice signal from a telephone communication or a microphone through a headset 175 (other audio input/output devices, such as a separate microphone for input) Or speakers for output, it is also feasible to consider). In some embodiments, the construction of the baseband unit 136 can also be used to play .mp3 or other similar audio file formats, and output the audio it produces and perform other functions, the details of which are discussed further below.

In the illustrated embodiment, computer system 100 includes a second keyboard 174 and a second display 173. The second keyboard 174 can include a set of numeric keys and any additional keys that may be necessary or useful for the functionality of the telephone or for any other functionality provided by the baseband unit.

The second display 173 can be a display that is smaller than the first display 172. In the phone mode, the second display 173 can be used to display output information provided by the baseband unit 136, such as a phone number connected to or information about the .mp3 audio file being played.

The second keyboard 174 and the second display 173 are not included in all embodiments of the computer system 100. In an embodiment that does not include the second keyboard 174 and the second display 173, the first keyboard 158 and the first display 172, respectively, are used to provide the keyboard and display functions required for the phone mode operation. Otherwise, embodiments including the second keyboard 174 and the second display 173 may use them during the phone mode, or in the second mode (hereinafter referred to as "2D mode") and the third mode, depending on the particular embodiment. They are used in (hereinafter referred to as "3D mode").

Computer system 100 can also include one or more perimeters 150. Such perimeters may include printers, external storage devices, scanners, rockers or any other peripheral device that may be used with a computer system.

Turning now to Figure 2, a block diagram of one embodiment of a computer system is shown. In the illustrated embodiment, computer system 200 is constructed in a 2D mode and 3D mode for phone mode operation and includes a single keyboard 258 and a single display 272.

In the illustrated embodiment, processor 201 of computer system 200 includes a central processing unit (CPU) 202. Central processing unit 202 can be one of a number of different types of processors and can be constructed to execute a CISC (Complex Instruction Set Computing) instruction set and/or a RISC (Reduced Instruction Set Computing) instruction set. An instruction set computed in a reduced instruction set contains instructions that are typically executed during a clock cycle. Conversely, a complex instruction set computing instruction set contains instructions that typically require multiple clock cycles to execute. In a reduced instruction set computing instruction set, LOAD and STORE are separate instructions, but these instructions are incorporated into other instructions in a complex instruction set computed instruction set. In one embodiment of computer system 200, central processing unit 202 can be configured to execute instructions from the x86 instruction set, including instructions for complex instruction set calculations, and can also include instructions for certain reduced instruction set calculations.

The central processing unit 202 is coupled to a north bridge 204, a portion of the processor set in the processor 201. Northbridge 204 can include a memory control hub and can coordinate communication between central processing unit 202, random access memory, and south bridge 206. In the illustrated embodiment, the north bridge 204 can be further constructed to coordinate communication between the central processing unit 202 and the 3D unit 212 and between the central processing unit 202 and the 2D unit 214 (the 3D unit 212 and the 2D unit 214 will be discussed further below). detail). Northbridge 204 can also be constructed to communicate with large dynamic random access memory 252 that provides the primary memory function of computer system 200.

Southbridge 206 is another wafer of the processor 201 chipset. More specifically, Southbridge 206 is constructed to perform the functions of an input/output control hub. In the illustrated embodiment, south bridge 206 is coupled to keyboard 258 to receive its input and is further configured to communicate with secure digital input/output (SDIO) interface 222. Southbridge 206 can also be connected to various busbars (not shown for simplicity), including, for example, PCI (peripheral component connection) busbars, ISA (Industry Standard Architecture) busbars, ATA (Advanced Technology Attachment), and SATA (serial array) Advanced technology additions, etc., to coordinate communication between them. The South Bridge 206 also provides support for universal serial bus master controllers, Ethernet connections, and other I/O links. The secure digital input/output interface 222 is coupled to the south bridge 206 and provides an interface to certain devices connectable to the processor 201, such as certain types of multimedia cards.

As previously mentioned, Northbridge 204 is simultaneously coupled to 3D unit 212 and 2D unit 214. 3D unit 212 is a functional unit that is configured to provide functionality associated with the 3D mode, including but not limited to 3D graphics. The 2D unit 214 is a functional unit that is configured to provide functionality associated with the 2D mode, including but not limited to a more limited set of graphics than those provided by the 3D unit 212. The connection 3D unit 212 and the 2D unit 214 are both connected to the video unit 216 to provide its input. The video unit 216 can be a graphics card, a graphics chip or a set of graphics chips. The output of video unit 216 is coupled to display logic selection unit 218, which in turn has an output coupled to display 272. Display selection logic is configured to select an input coupled to the video unit 216 during operation of one of the 2D or 3D modes. During the phone mode operation, display selection logic is configured to select an input coupled to the small dynamic random access memory 254 that can receive data from the baseband unit 266 via the secure digital input/output interface 222.

Display 272 can be any suitable type of display, such as a flat panel display (liquid crystal display, plasma or other type) or a monitor (such as a cathode ray tube display). Some television displays are also suitable for use in computer system 200. In the illustrated embodiment, display 272 is used to display any of the three modes of operation. During the phone mode operation, display 272 is constructed to display a telephone human interface (MMI) that can provide information regarding making a call or other functions that can be performed in the phone mode. During the 2D mode operation, the display 272 can also display other types of information, such as network access (such as a web browser), an email client, and a digital video broadcast of a handheld device in various forms of information ( DVB-H) and other related information. In this 3D mode, display 272 can also display information related thereto, such as 3D graphics from a multiplayer online game.

Computer system 200 can also include at least one flash storage device 256 and a handheld digital video broadcast demodulator 262. The flash storage device 256 can be one of a plurality of portable flash devices of various types, and can be connected to the processor 201 via any suitable port (e.g., through a universal serial bus bar). The handheld digital video broadcast demodulator 262 can provide demodulation of signals associated with the handheld digital video broadcast device, which can convert the signal into a format suitable for processing by a computer system 200.

A WLAN (Wireless Area Network) baseband unit 264 can provide a network connection to the computer system 200. In one embodiment, the wireless local area network base unit 264 can be a wireless router or a network card within the processor 201 (not shown for simplicity). Embodiments of computer system 200 that use a wired network connection rather than a wireless network connection, as well as concurrently constructing wired and wireless network communication, are also contemplated.

The baseband unit 266 is constructed to provide various functions associated with telephony mode operation. Such operations include voice input and audio output, telephone numbering and reception, playing audio files (such as .mp3 format files), and outputting audio therefrom. The baseband unit 266 is coupled to a memory unit 268 that provides read only memory (ROM) storage, flash memory storage, or various other similar memory storage. The memory unit 268 provides storage for various materials and instructions that may be required in the operation of the telephone mode. The information may include, for example, a user's phone book and communication records, as well as information about settings. When the instructions are executed on the processor of the baseband unit 266, the instructions may include instructions for causing audio file playback, incoming and outgoing processing of the dialed telephone related information (packets), processing of Global Positioning System (GPS) information, and the like. In one embodiment, the instructions can be RISC instructions and thus can be executed by a RISC microprocessor embedded in the baseband unit 266. The microprocessor used in baseband unit 266 can be one of those typically used in handheld devices, such as for personal digital assistants (PDAs), mobile phones, portable game consoles, or portable music players. The middle. In one embodiment, the microprocessor used in baseband unit 266 can be incorporated into an Advanced RISC Machine (ARM) architecture.

As previously described, the embodiment of computer system 200 illustrated in FIG. 2 includes only a single display and a single keyboard. Therefore, in addition to being connected to the south bridge 206, the keyboard 258 can also be directly connected to the baseband unit 266, thus providing any keyboard user to use for input operations. For example, keyboard 258 can be used to enter a phone number to place a call. Regarding the display of information related to the operation of the telephone mode, the baseband unit is constructed to communicate with the display 272, the small dynamic random access memory 254, and the display logic selection unit 218 via the secure digital input/output unit 222.

Because some modes of operation of computer system 200 have different power requirements than other modes, certain units of computer system 200 can be powered down during certain modes of operation. Table 1 illustrates which of the units can be powered on and/or activated during various different modes of operation, as supported by the computer system 200 of FIG.

Therefore, only a few necessary units in the phone mode are powered on and/or activated. By limiting which cells can be turned on and on during the phone mode operation, the power to those units that are not needed can be turned off, so power can be saved relative to other modes. Likewise, since the power of the 3D unit 212 does not need to be turned on during 2D operation, the operation of the 2D mode can save power relative to the operation of the 3D mode. In this 3D mode, when this mode allows the full functionality provided by computer system 200 to be utilized, the power to all units can be turned on.

It should be noted that Table 1 is an example. In various embodiments, different combinations of features can be provided in different modes of operation. These different combinations of characteristics may include a greater or lesser number of characteristics, as well as features that are different from those explicitly shown in Table 1. Similarly, the units that are turned on in each mode of operation will also be different. Additional units are not explicitly disclosed herein, but they can participate in a variety of different modes of operation and thus turn the power on or off. Some of the elements that are explicitly disclosed herein may not be present in all embodiments.

As mentioned in Table 1, different levels of a computer operating system can be used in the 2D and 3D modes. A full-featured operating system, such as Microsoft Windows, can be utilized in this 3D mode. This makes this feature available for functions such as 3D and online games. In this 2D mode, certain operating system functions are available, including but not limited to network access (via a local area network or wireless local area network), email, digital video broadcasting, or DVD under this structure. Play. However, in this mode, the full functionality of the operating system is not available, so that corresponding functions such as 3D games and online games cannot be obtained. Also in this 2D mode, the 3D unit 212 is not turned on, so that the associated power savings due to powering down the unit can be achieved.

In this telephone mode, although the function of the telephone mode can be completely performed, the characteristics of the operating system cannot be obtained. The 3D unit 212 or 2D unit 214 is not turned on in the phone mode, so power savings can be achieved by removing power from these units during this mode of operation. Moreover, the power of the other units mentioned in the table can also be turned off during the operation of the telephone mode, thereby achieving additional power savings in the 2D mode.

It should be noted that the various functional units shown within processor 201 can be implemented in any combination of integrated circuits. For example, in one embodiment, each functional unit within processor 201 can be implemented independently of the integrated circuitry of other functional units. In another embodiment, certain functional units may be combined into a single integrated circuit (considering the implementation of combining central processor 202, 3D unit 212, and 2D unit 214 to a single integrated circuit). It is also possible to implement certain units with a separate circuit card. For example, video unit 216 can be implemented by one or more graphics chips on a motherboard, or can be implemented as a separate graphics card including the one or more graphics chips.

Turning now to Figure 3, another embodiment of a computer system is shown. The various functional units shown in Figure 3 may be equivalent or similar to the peers shown in Figure 2. For example, each of central processor 302, 3D unit 312, 2D unit 314, and baseband unit 366 can be individually peer-to-peer or similar to the peer-to-peer components shown in FIG. 2 - central processor 202, 3D unit 212, 2D Unit 214 and baseband unit 266. Thus, the various functional units of Figure 3 have a similar or equivalent comparison in Figure 2, and the foregoing description of the equivalent elements can also be applied to those shown in Figure 3.

In the embodiment shown in FIG. 3, computer system 300 includes two keyboards and two displays. More specifically, computer system 300 includes a large keyboard 358 and a keypad 374, as well as a large display 372 and a small display 373. Because this particular embodiment includes two keyboards, the large keyboard 358 is not connected to the baseband unit 366, unlike the embodiment in which the keyboard 258 of FIG. 2 is coupled to the baseband unit 266. Table 2 illustrates which of the units can be powered on and/or turned on during the various modes of operation, as supported by the computer system 300 of FIG.

During the phone mode operation, the baseband unit 366 can utilize the small display 373 to display information. This is different from computer system 200 that uses display 272 to display information for each of the three operating modes. The power to the display 372 can then be reduced during the phone mode operation, which provides additional power savings relative to embodiments that require a larger system display during this mode. Likewise, due to the presence of the keypad 374, the large keyboard 358 can remain idle during phone mode operation, and any power consumption associated with its use can be saved.

When operating in the 2D or 3D mode, the telephone portion of the system can use display 372 to display information, or alternatively use a small display 373. If the display 372 is used to display information from the baseband unit 366 in the 2D and 3D modes, the power to the small display 373 can be turned off to reduce power consumption. Similarly, if the 2D or 3D mode operation is performed, the use of the keypad may not be required, so if it is a power consuming device, it can be placed in an idle state or powered off. However, embodiments in which the small display 373 and the keypad 374 remain open during both 2D and 3D mode operation are also possible.

Turning now to Figure 4, an embodiment of a transition between various modes in a computer system is shown. More specifically, FIG. 4 illustrates switching between the phone mode and the 2D mode and switching between the 2D mode and the 3D mode.

When operating in the phone mode, the user can switch to the 2D mode by taking one of several actions. If the processor (such as processor 201 or 301 discussed above) has not yet turned on the power, a power switch can be used to complete the switch from the phone mode. This action applies power to those functional units within the processor (as well as other peripherals not associated with the telephony mode) and may additionally provide power to peripheral units connected to the processor. On the other hand, if the processor is powered on but in a low-power sleep mode, it can be moved by a mouse attached to the processor or by pressing a large keyboard connected to the processor (also That is, one of the keys on the standard keyboard configuration is switched from the phone mode to the 2D mode. Switching from the phone mode to the 2D mode may also be generated in response to a request sent from the baseband unit via the secure digital input/output interface unit.

Switching from the 2D mode back to the phone mode can be accomplished by logging out and lowering the power to the computer system processor. In addition, after a period of inactivity, the processor and various peripherals of the computer system will enter a sleep mode, at which time switching from the 2D mode to the phone mode may occur.

The action of switching from the 2D mode to the 3D mode can be accomplished by activating the driver of the 3D mode. For example, if the user attempts to launch an online game with 3D drawing capabilities while the computer system is operating in 2D mode, the 3D driver can be launched to bring the computer system into 3D mode. In addition, the operation of switching from the 2D mode to the 3D mode can also be achieved simply by applying power to the 3D functional unit in the computer system.

Switching from the 3D mode to the 2D mode can be accomplished by turning off the 3D driver (eg, by leaving the game or other application software that launched it for the first time) or removing power from the 3D functional unit.

While the invention has been described with reference to the specific embodiments thereof, it is understood that the embodiments are only illustrative, and the scope of the invention is not limited thereto. Any variations, modifications, additions and improvements to the described embodiments are possible. Such changes, modifications, additions and improvements will fall within the scope of the application of the invention as described below.

The components included in the diagram of this case are listed as follows:

computer system. . . 100

processor. . . 101

First display. . . 172

The first keyboard. . . 158

Base frequency unit. . . 136

Second keyboard. . . 174

Second display. . . 173

Surroundings. . . 150

Head-mounted components. . . 175

computer system. . . 200

keyboard. . . 258

processor. . . 201

Central processing unit. . . 202

North Bridge. . . 204

South Bridge. . . 206

3D unit. . . 212

2D unit. . . 214

monitor. . . 272

Large dynamic random access memory. . . 252

Secure digital input/output interface. . . 222

Video unit. . . 216

Display logic selection unit. . . 218

Base frequency unit. . . 266

Small dynamic random access memory. . . 254

Flash storage device. . . 256

Handheld digital video broadcast demodulator. . . 262

Wireless area network baseband unit. . . 264

Read only / flash memory. . . 268

computer system. . . 300

Big keyboard. . . 358

Keypad. . . 374

Large display. . . 372

Small display. . . 373

Base frequency unit. . . 366

Central processing unit. . . 302

processor. . . 301

South Bridge. . . 306

North Bridge. . . 304

2D unit. . . 314

3D unit. . . 312

Large dynamic random access memory. . . 352

Video unit. . . 316

Secure digital input/output interface. . . 322

Read only / flash memory. . . 368

Display selection logic. . . 318

Wireless area network baseband unit. . . 364

Small dynamic random access memory. . . 354

Handheld digital video broadcast demodulator. . . 362

Flash storage device. . . 356

In this case, we can get a deeper understanding by the following figures and descriptions: Figure 1 is a diagram showing an embodiment of a computer system with integrated telephone functions; Figure 2 is a computer system having a keyboard and a display. FIG. 3 is a block diagram of an embodiment of a computer system having two keyboards and two displays; and FIG. 4 is a diagram showing one embodiment of transitions between various modes of a computer system .

Claims (22)

A computer system including a telephone function, the computer system comprising: a first keyboard; a first display; a telephone portion, wherein the telephone portion is associated with at least a first mode; and a processor, wherein the processor Included at least with a first functional unit associated with at least a second mode, and a second functional unit associated with at least a third mode; wherein in the first mode, the portion of the phone is turned on and the The telephone portion is independent of the activation of the processor and provides a function of making a call independently of the processor; wherein in the second mode, both the telephone portion and the first functional unit are turned on; In the third mode, each of the telephone portion, the first functional unit and the second functional unit is turned on, wherein the first display is a computer system display; wherein the computer system is constructed to be in the computer When the processor of the system enters a sleep mode, the computer system will transition from the second mode to the first mode. The computer system of claim 1, wherein the computer system comprises a second keyboard, the second keyboard is powered on and activated during the first mode operation, and the first keyboard is operated in the first mode Does not start during the period. The computer system of claim 2, wherein the second keyboard is a telephone button set. The computer system of claim 2, wherein the first and second keyboards are activated during the second and third modes. The computer system of claim 2, wherein the computer system comprises a second display, wherein in the first mode, the second display is activated and the first display is not activated. The computer system of claim 5, wherein in the first mode, the second display is activated and the first display is not activated, and during the second and third modes, the first display is activated The second display does not start. The computer system of claim 6, wherein the computer system display is configured to display a telephone interface during the second and third modes. The computer system of claim 5, wherein the second display is a display for a telephone. The computer system of claim 1, wherein the computer system display is configured to display a telephone interface in each of the first, second and third modes. The computer system of claim 1, wherein in the third mode, the computer system is constructed to perform a full-featured operating system. The computer system of claim 10, wherein the operating system is a window operating system. The computer system of claim 10, wherein in the second mode, the computer system is constructed to perform one less operating system version than the full-featured operating system. The computer system of claim 1, wherein the computer system is configured to transition from the first mode to the second mode in response to a user request. The computer system of claim 1, wherein the computer system is configured to switch from the second mode to the first mode in response to activation of the third mode driver and/or power supply obtained by the second functional unit. In a three mode, the computer system is configured to transition from the third mode to the second mode in response to the closing of the third mode driver or the removal of the second functional unit power supply. The computer system of claim 1, wherein the second functional unit is not activated in the first or second mode, and the first functional unit is not activated during the first mode. A method for operating a computer system having a telephone function, the method comprising: operating the computer system in a first mode, wherein in the first mode, a telephone portion of the computer system is activated to provide a telephone function, and the telephone portion is independent of the startup of the processor of the computer system, and provides a function of making a call independently of the processor of the computer system; operating the computer system in a second mode, wherein In the second mode, the telephone portion and a first functional unit of the computer system are activated, and the computer system is operated in a third mode, wherein in the third mode, the telephone portion, The first functional unit and one of the second functional units of the computer system are activated, wherein a first display is activated in the second and third modes, the first display being a computer system display; Wherein, when the processor of the computer system enters a sleep mode, the computer system will switch from the second mode to the first mode. The method of claim 16, further comprising: executing a full-featured version of the operating system in the third mode; and executing a reduced functional version of the operating system in the second mode; wherein the operating system The reduced feature version has fewer features than this full-featured version. As described in claim 17, the full-featured version of the operating system is a window operating system. The method of claim 16, further comprising: switching from the first mode to the second mode in response to a user request. The method of claim 16, further comprising: switching from the second mode to the third mode in response to activation of the third mode driver and/or power supply obtained by the second functional unit; The third mode switch is switched off or the second function unit power supply is removed to switch from the third mode to the second mode. The method of claim 16, further comprising opening a second display in the first mode, wherein the second display is a telephone system display. The method of claim 16, wherein: when the computer system is operated in the second mode, the second functional unit is not turned on; and when the computer system is operated in the first mode, the The first functional unit.