KR101147297B1 - Portable presentation apparatus capable of easily changing key code and control method thereof - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a presentation portable device and a control method thereof in which a key value of a function key can be changed to another key value without using a separate key value switching program set in a host device such as a computer.
In order to achieve this, the present invention provides a key signal input unit for generating a key code corresponding to the key signal according to a key signal of a keypad, an RF transmitter for converting the key code into an RF control signal, and transmitting the key signal; A remote controller including a transmission controller for controlling an interaction between an input unit and the RF transmitter and a signal flow; And an RF receiver for receiving the RF control signal transmitted from the remote controller and extracting the key code, a key code switching unit for changing the key code into another key code, and a key code transferred from the key code switching unit. An interface unit for transmitting to a computer, a memory unit for storing a control program for changing the key code to another key code, a reception unit for controlling the interaction and signal flow of the RF receiver, key code switching unit, interface unit, memory unit Provided is a presentation portable device including a receiving device including a control unit.

Description

PORTABLE PRESENTATION APPARATUS CAPABLE OF EASILY CHANGING KEY CODE AND CONTROL METHOD THEREOF}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a presentation portable device and a method of controlling the same, wherein the key value of a function key is changed to another key value without setting a separate key value switching program to a host device such as a computer. The present invention relates to a presentation portable device and a control method thereof, which can be changed and used.

In general, presentations for briefings are carried out using overhead projector (OHP) equipment, or using a presentation system comprising a computer and a projector.

Recently, due to the miniaturization and low cost of projectors, most organizations such as schools, government offices, general small and medium-sized enterprises, and large corporations have computers and projectors. It was possible to present conveniently by simply preparing a device (for example, a laser pointer).

In particular, in recent years, with the development of a presentation portable device, the presenter can use the presentation portable device as a remote control means to remotely control a presentation program of a computer. For example, recently released presentation portable devices remotely transmit computer function key values such as "PAGE UP" and "Page Down", and are thus activated on the current computer. It includes a function for controlling the operation of a presentation program (for example, MS PowerPoint).

However, until now, portable presentation devices have been set to control only one or two basic operations of the presentation program for each function key, and to change the basic control operation, a separate "key value changeover" is performed on the computer. After installing the program, most of the products used to convert the key value through the program or cannot switch the key value at all.

According to the structure of the conventional portable device for presentation there are the following problems.

(1) For example, a function key of " ▼ " provided in a conventional portable device for presentation is assigned to a key value other than the value of the " Page Down " key of the computer, for example, a " movie " Play "key value (e.g., space bar if the video player is a Windows Media Player), if you want to use it, the user will present a separate" key value switch program ". After installation on the computer for presentation, follow the instructions of the key value conversion program to reset the "▼" key value from the "Page Down" key value of the computer to the "Space bar" key value. Afterwards, the program should run with the program running at all times.

(2) Also, by using a presentation computer on which the user has not installed and executed the "key value conversion program" at another place later, the function key of "▼" is changed to the "Page Down" key value of the computer (i.e., document If you want to continue to use the "space bar" key value (that is, the key value for driving the video program) instead of the key value for driving the program), the procedure of (1) described above should be repeated again.

However, as can be seen in the above example of (1) (2), the user can change the default key value (fixed key value set by default) of the function key provided in the portable device for presentation to another key value. If you want to change it and use it, you should set a program (key value change program) on the presentation place computer that recognizes the presentation key as the change key value for each presentation. You must run it in a state.

Usually, the user only prepares a presentation portable device or a portable storage device storing a file to be presented as a preparation for a presentation, and as a computer to be connected to the projector, it is common to use equipment pre-installed at each presentation place. Computer setting work as such is practically inevitable. In addition, this repetitive computer setting operation is a user will have to feel bother.

In particular, the above-described conventional key value converting program is designed for a specific operating system (for example, Windows operating system), so that the computer provided at the presentation site is a device driven by a heterogeneous operating system (for example, Linux operating system). In this case, there is a problem that it is fundamentally impossible to change the function key provided in the portable device for presentation to a key value other than the basic key value. In this case, a user who prepares a presentation by changing the function key included in the presentation portable device to a key value other than the default key value may have a different environment than that originally expected (for example, other assistants). You may be faced with an embarrassing situation where you need to present a presentation under the help of a computer operator.

The present invention has been conceived in view of the above-described problems, and can be used for presentations in which the key value of a function key can be changed to another key value without setting a separate key value switching program in a host device such as a computer. It is an object of the present invention to provide a portable device and a control method thereof.

In order to achieve the above object, a preferred embodiment of the present invention comprises a remote controller for remotely controlling a host device, and a presentation device connected to the host device to wirelessly intervene between the host device and the remote controller. A method of controlling a host device of a presentation portable device, the receiving device comprising: (a) receiving a key code relating to a specific key button of the remote controller; (b) determining whether change information for the key code exists; And (c) if it is determined in step (b) that there is change information for the key code, replacing the key code with a changed key code according to the change information and transmitting the changed key code to the host device. It provides a host device control method characterized in that.

According to a preferred embodiment, before the step (a), the receiving device may further perform the step of (a0) storing the change information of the key code in a memory.

According to a preferred embodiment, the change information of the key code in the step (a0) may be information indicating to change the specific key code received from the remote controller to another key code.

In addition, another preferred embodiment of the present invention to achieve the above object is a remote control for remotely controlling the host device; And a receiving device connected to the host device and wirelessly intervening between the host device and the remote controller, wherein the receiving device determines that there is change information on a key code received from the remote control unit. The present invention provides a presentation portable device, wherein the received key code is replaced with a changed key code according to the change information and transmitted to the host device.

According to a preferred embodiment, the change information may be information indicating to change a specific key code received from the remote controller to another key code.

In addition, another preferred embodiment of the present invention to achieve the above object is a key signal input unit for generating a key code corresponding to the key signal according to the key signal of the keypad, and converts the key code into an RF control signal for transmission A remote controller including an RF transmitter and a transmission controller for controlling the interaction of the key signal input unit and the RF transmitter and a signal flow; And an RF receiver for receiving the RF control signal transmitted from the remote controller and extracting the key code, a key code switching unit for changing the key code into another key code, and a key code transferred from the key code switching unit. An interface unit for transmitting to a computer, a memory unit for storing a control program for changing the key code to another key code, a reception unit for controlling the interaction and signal flow of the RF receiver, key code switching unit, interface unit, memory unit Provided is a presentation portable device including a receiving device including a control unit.

According to a preferred embodiment, the control program for changing the key code to another key code comprises: (a) receiving a key code for a particular key button of the keypad from the remote controller; (b) determining whether change information for the key code exists; And (c) if it is determined in step (b) that there is change information for the key code, replacing the key code with another key code according to the change information.

According to a preferred embodiment, the change information of step (b) is information indicating to change a specific key code received from the remote controller to another key code, which is previously stored in the memory before performing step (b). It may be stored.

In addition, another object of the present invention to achieve the above object is a remote controller for remotely controlling a host device, and a receiving device connected to the host device to wirelessly intervene between the host device and the remote control device. A method for controlling a host device of a presentation portable device, the receiving device comprising: (a) receiving a key signal related to a specific key button of the remote controller; (b) generating a key code corresponding to the key signal; (c) determining whether change information for the key code exists; And (d) if it is determined in step (c) that there is change information for the key code, transferring the key code to the host device by replacing the key code with the changed key code according to the change information. It provides a host device control method characterized in that.

According to a preferred embodiment, before the step (a), the receiving device may further perform the step of (a0) storing the change information of the key code in a memory.

According to a preferred embodiment, the change information of the key code in the step (a0) may be information indicating to change the key code for a specific key signal received from the remote controller to another key code.

In addition, another preferred embodiment of the present invention to achieve the above object is a remote control for remote control of the host device; And a receiving device connected to the host device and wirelessly intervening between the host device and the remote controller, wherein the receiving device has change information of a key code corresponding to a key signal received from the remote control. If it is determined that the present invention, the present invention provides a presentation portable device, characterized in that the transfer to the host device by replacing the changed key code according to the change information of the key code corresponding to the received key signal.

According to a preferred embodiment, the change information may be information indicating to change the key code corresponding to a specific key signal received from the remote controller to another key code.

In addition, another preferred embodiment of the present invention to achieve the above object is a key signal input unit for generating a key signal corresponding to the key button selected by the user, and an RF transmitter for converting the key signal into an RF control signal for transmission And a transmission controller for controlling the interaction of the key signal input unit and the RF transmitter and a signal flow; And an RF receiver for receiving the RF control signal transmitted from the remote controller to extract the key signal, a key code generation / switching unit for generating and switching a key code corresponding to the key signal, and the key code generation / switching. An interface unit for transmitting the key code transmitted from the unit to a computer, a memory unit storing a control program for changing the key code to another key code, the interaction between the RF receiver, key code switching unit, interface unit, memory unit, and It provides a presentation portable device consisting of a receiving device including a receiving control unit for controlling the flow of signals.

According to a preferred embodiment, the control program for changing the key code to another key code comprises: (a) receiving a key signal relating to a particular key button of the remote controller; (b) generating a key code corresponding to the key signal; (c) determining whether change information for the key code exists; And (d) if it is determined in step (c) that there is change information for the key code, transferring the key code to the host device by replacing the key code with the changed key code according to the change information. It may be.

According to a preferred embodiment, the change information of the step (c) is information indicating to change the key code corresponding to the specific key signal received from the remote controller to another key code, before performing the step (c) It may be previously stored in the memory.

1 is a schematic diagram of a system to which a portable presentation device according to a first preferred embodiment of the present invention is applied;
2 is a block diagram for explaining the configuration of a portable presentation device according to a first embodiment of the present invention.
Figure 3 is a perspective view schematically showing the appearance of the presentation portable device of FIG.
4 is a flowchart schematically showing an algorithm of a "key code change control program" applied to the presentation portable apparatus of FIG.
5A and 5B exemplarily illustrate a process of storing " setting key value information " applied to a presentation portable device of FIG.
FIG. 6 is a flowchart schematically illustrating a process of transferring a basic key value of a keypad to a setting key value by a presentation portable device of FIG.
7 is a block diagram for explaining the configuration of a portable presentation device according to a second preferred embodiment of the present invention.
8 is a flowchart schematically showing an algorithm of a "key code change control program" applied to the presentation portable apparatus of FIG.

[First Example ]

1 is a schematic diagram of a system to which a portable presentation device is applied according to a preferred embodiment of the present invention.

As shown in FIG. 1, when the presentation portable apparatus 10 or 20 receives a key signal of a keypad, a key code corresponding to the input key signal is shown. Receiving a RF control signal transmitted from the remote controller 10 and the remote controller 10 that transmits a radio frequency (RF) control signal, and then converting a key code in the RF control signal into another key code. It consists of a receiver 20 which transmits to an input / output port (for example, a USB port) of a back computer. Here, the key code is a pre-defined key value of each function key provided in the input device (for example, keyboard, mouse, etc.) of the computer 30 as a corresponding numeric value. That is, the presentation portable apparatus 10 or 20 according to an exemplary embodiment of the present invention transmits a key code, which is an input signal for controlling the computer 30, to the computer 30 remotely, thereby providing a computer 30. All input operations equivalent to the function key input operations that can be performed by the input device can be performed remotely.

In addition, the remote controller 10 has a laser beam generating unit (refer to 140 in FIG. 3) formed at the front end thereof, and the presentation laser according to the on signal of the laser beam firing button (see 131a in FIG. 3). The beam is projected onto the display means 50 such as a screen, chart, board or the like. That is, the presentation portable apparatus 10 or 20 according to the preferred embodiment of the present invention basically includes a laser pointer function.

Meanwhile, the receiver 20 is connected to an input / output port of a host device capable of driving a presentation program such as the computer 30 and inputs a control signal received from the remote controller 10 to the host device. In the following description, the host device is a computer 30.

As the input / output port of the computer 30, for example, a USB port can be considered. In addition, as a connection means connected to the computer 30 of the receiving device 20, for example, the USB connection terminal physically connected to or disconnected from the USB port of the computer 30 can be considered (see 230a of FIG. 3). . A USB port is a plug and play interface between a computer and peripherals such as audio players, joysticks, keyboards, phones, scanners and printers. Although the principle of USB is the same as that of a serial port, it is more convenient to connect than a serial port, and because it supports data transfer speeds of 12 Mbps, the speed is sufficient even if any peripheral device is connected, and up to 127 devices can be connected in a chain. have.

Therefore, when the receiving device 20 of the presentation portable device is connected to the USB port of the computer 30, the computer 30 connects the presentation portable devices 10 and 20 to the peripheral device by the plug and play interface. Automatic recognition, and the computer 30 and the presentation portable devices (10, 20) are automatically interlocked.

The projection apparatus 40 enlarges and projects the presentation data output from the computer 30 onto the display means 50. The projection apparatus 40 can be comprised, for example with a projector.

FIG. 2 is a block diagram illustrating a functional configuration of a presentation portable apparatus according to a preferred embodiment of the present invention, and FIG. 3 is a perspective view schematically illustrating an appearance of the presentation portable apparatus to which the functional configuration is applied.

As shown in FIG. 2, the presentation portable apparatus 10 or 20 according to an exemplary embodiment of the present invention receives a key value from the user 60, encodes it, and transmits the encoded key as an RF control signal. Units 110 and 120 to perform, and units 130 and 140 for receiving a laser beam firing signal and projecting a laser beam.

The key signal input unit 110a is a keypad 111 for outputting a key signal corresponding to a predetermined key when the user 60 presses a predetermined key, and corresponds to an input key signal when a key signal of the keypad 111 is input. The key code generator 113 generates a key code and transmits the key code to the RF transmitter 120. For example, when the "◀" key button (see 111a in FIG. 3) of the keypad 111 is designated as the "Page Up" key value of the computer 30, the key code generator 113 is " A numeric value of "33" defined by the "page up" key code is generated in accordance with the key signal of the "" key button 111a. Similarly, when the “▶” key button (see 111b in FIG. 3) of the keypad 111 is designated as the “Page Down” key value of the computer 30, the key code generator 113 may be “▶”. According to the key signal of the ”key button 111b, a numeric value of“ 34 ”defined by the“ page down ”key code is generated.

The RF transmitter 120 is an encoder 121 for encoding a key code generated through the key code generator 113 and an RF converter 123 for converting the encoded key code into an RF control signal and transmitting the RF key to the receiver 20. ), And an antenna 125.

The laser pointer driving switching unit 130 and the laser beam generator 140 are units for providing a laser pointer function to the user 60, and the laser beam generator 140 is switched out of the housing (see 131a of FIG. 3). The laser beam is generated by the on operation of the laser pointer driving switching unit 130, which protrudes, and projects the laser beam in the distal direction of the remote controller 10. At this time, the projected laser beam touches a screen, a chart, a board, or the like to form a laser point.

The transmission controller 150 controls the interaction of the transmission units 110 and 120 and the signal flow in the remote controller 10.

Meanwhile, the receiver 20 includes an RF receiver 210, a key code switch 220, an interface 230, a memory 240, and a receiver controller 250.

The RF receiver 210 includes an antenna 211 and an RF receiver 213 for receiving an RF control signal transmitted from the remote controller 10 and a decoder 215 for decoding the received RF control signal. That is, the RF receiver 210 receives the RF control signal transmitted from the remote controller 10 through the antenna 211 and the RF receiver 213, and then decodes the RF control signal into the decoder 215 to decode the key code. After extraction, the extracted key code is transmitted to the key code switching unit 220.

The key code switching unit 220 analyzes the key code transmitted from the RF receiving unit 210 and performs a "key code switching operation" with respect to the key code. Here, " key code switching operation " means a key code value (hereinafter, referred to as a " basic key value " for the convenience of description) transmitted by the remote controller 10 by the user (hereinafter, " setting " Key value ", and then, transmits to the computer 30 through the interface unit 230. That is, the presentation portable apparatuses 10 and 20 according to the preferred embodiment of the present invention perform the " key code switching operation " in the receiving apparatus 20, so that the computer 30 connected to the receiving apparatus 20 is provided. It is possible to change the default key value of the keypad 111 to a setting key value even if a separate key value switching program is not set. Accordingly, the basic key value of the keypad 111 can be changed to the set key value regardless of the type of operating system of the computer 30 connecting the receiving device 20.

To this end, when the key code switching unit 220 receives the key code from the RF receiving unit 210, the key code switching unit 220 calls the "key code switching control program 241" stored in the memory 240 to set the default key value. Replace with.

4 is a flowchart schematically showing an algorithm of the "key code switching control program 241" applied to the receiving apparatus 20. As shown in FIG.

Referring to FIG. 4, when it is determined that the reception device 20 is in a setting mode state (S401), the “key code switching control program 241” according to an exemplary embodiment of the present invention may use the keypad 111 from the computer 30. Receiving instruction information for replacing a basic key value with respect to a specific key button in step S402, and storing the instruction information as “setting key value information 242” in the memory 240. S403 is performed.

For example, the user may store the "setting key value information 242" in the memory 240 of the receiving apparatus 20 via the computer 30 according to the key value setting menu item 1000 as shown in FIG. 5A. Can be.

In the key value setting menu item 1000 of FIG. 5A, the short press 111a-1 of the first key button with respect to the three key buttons of the remote controller 10 is the "Page Up" key value of the computer 30. In addition, the long press 111a-2 of the first key button indicates that the basic key value is set as the "B" key value of the computer 30, respectively. Similarly, the key value setting menu item 1000 also shows for each basic key value set for each pressing of the other 2nd and 3rd key buttons. In addition, the key value setting menu item 1000 is an input field (111a-1a, 111a-2a, 111b-1a, 111b-2a, 131a-1a) for inputting a key value to replace the default key value of each key button. Each).

As shown in FIG. 5B, the user inputs a key value (setting key value) to replace the default key value of each key button in each input field (111a-1a, 111a-2a, 111b-1a, 111b-2a, 131a-1a). ), A command for instructing storage of the setting key value is input, and the memory 240 stores it as "setting key value information". For example, the user may set a short press 111a-1 of the first key button of which “Page Up” is set as a basic key value to a key value 111a-1a of “Ctrl + P”. Thus, for example, the memory 240 is " Page Up "-" Ctrl + P " (setting) as setting key value information for a short press 111a-1 of the first key button. Key value) ".

Meanwhile, the key value setting menu item 1000 shown in FIGS. 5A and 5B is a menu item of some programs provided by the "key code change control program 241" according to a preferred embodiment of the present invention, or "key code change". Control program 241 "may be a menu item provided by a separate program. In addition, the program providing the key value setting menu item 1000 shown in FIGS. 5A and 5B is pre-loaded in the factory memory 240 of the receiving apparatus 20, or is downloaded from a network through a computer ( 30) may be installed.

Again, referring to FIG. 4, when it is determined that the receiving device 20 is in the use mode state (S404), the "key code switching control program 241" refers to the key code for the keypad 111 from the remote controller 10. Wait until you receive. Next, when the key code switching control program 241 receives the key code relating to the keypad 111 from the remote controller 10 (S405), the " setting key value information 242 " In operation S406, a read operation is performed to check whether there is change information on the received key code. For example, when the received key code is an instruction of "33" indicating a "Page Up" key value of the computer 30, the "key code switching control program 241" is "setting key value information 242". Check the change instruction information of " " " 33 "-" " " " " " " " " 32 ". Then, the received " Page Up (33) " key value (default key value) is changed to " SPCACE (32) " I think there is information to change.

Next, when it is determined in step S406 that there is change information on the key code, the "key code change control program 241" switches the key code to the key code changed according to the "setting key value information 242". It is applied to the interface unit 230 (S407).

On the other hand, if it is determined in step S406 that there is no change information on the key code, the "key code switching control program 241" applies the key code to the interface unit 230 as it is (S408).

In accordance with the flow of S401 to S408 described above, the "key code switching control program 241" completes the operation of changing the basic key value (key code) received from the remote controller 10 to the set key value (key code). do.

Meanwhile, the above-described "setting key value information 242" may be configured to be stored in a nonvolatile memory such as an electrically erasable programmable read-only memory (EEPROM) or in a volatile memory such as a random access memory (RAM). Can be. When the "setting key value information 242" is stored in the nonvolatile memory, the presentation portable apparatuses 10 and 20 continue according to the key value (changed key value) set by the above-described steps S401 to S403. Can be used. Of course, by performing the above-described process of S401 to S403 again, it is possible to return the set key value to the original primary key value or reset it to another key value. On the other hand, when the "setting key value information 242" is stored in the volatile memory, the key value (modified key value) set by the above-described steps S401 to S403 is separated from the computer 30 by the receiving device 20. It is extinguished at the same time as power supply is stopped. Accordingly, the user can use the presentation portable apparatuses 10 and 20 according to the set key value only if the user performs the above-described steps S401 to S403 again. Otherwise, the presentation portable apparatuses 10 and 20 can be used. ) Works according to the original primary key value.

Referring again to FIG. 2, the interface unit 230 includes a connection terminal 230a that is physically connected to the input / output port 310 of the computer 30 as shown in FIG. 3. For example, when the input / output port 310 is configured as a USB port, the connection terminal 230a of the interface unit 230 may be configured as a USB terminal connected to the USB port. The interface unit 230 transmits a key code (key code relating to a basic key value or a setting key value) transmitted from the key code switching unit 220 to the computer 30.

The memory 240 is an overall operation of the presentation portable device 10, 20, for example, the RF communication operation between the remote controller 10 and the reception device 20 and the reception device 20 and the computer 30. Programs for controlling an interlocking operation and a "key code change control program 241" according to a preferred embodiment of the present invention are stored.

The reception controller 250 controls the interaction of the RF receiver 210, the key code switch 220, the interface 230, and the memory 240 and the flow of signals.

6 is a schematic diagram illustrating a process of transferring a basic key value of a keypad 111 to a setting key value by a portable device 10 and 20 for presentation according to an exemplary embodiment of the present invention and then transmitting the same to a computer 30. It is a flow chart shown.

When the remote control unit 10a generates a key signal for a specific key button of the keypad 111 (S601), converts the key signal into a corresponding key code (S603), and then controls the RF code that encodes the key code. The signal is transmitted to the receiving device S605.

Next, the reception apparatus 20 decodes the RF control signal received from the remote control unit 10a and extracts a key code in the RF control signal (S607).

Next, the receiver 20 analyzes the extracted key code to determine whether to change the key code to another key code. At this time, if there is setting information instructing to change the key code to another key code, the receiving device 20 changes the key code to a key code according to the setting information (S609), so that the computer 30 It transmits (S611). If there is no setting information instructing to change the key code, the receiving device 20 transmits the key code to the computer 30 as it is.

Next, the computer 30 controls the currently active application program according to the received key code.

As described above, according to the present invention, since the receiving device 20 of the presentation portable devices 10 and 20 completes the operation of replacing the keypad 111 basic key value with the setting key value, the computer 30 No additional capability for changing the key value of the keypad 111 is required. Accordingly, regardless of the operating system type of the computer 30 used in conjunction with the presentation portable apparatuses 10 and 20, it is possible to change the basic key value of the keypad 111 to another key value.

[Second Example ]

7 is a block diagram illustrating a functional configuration of a portable presentation device according to a second embodiment of the present invention.

As shown in FIG. 7, the presentation portable apparatus 10a or 20b according to the second exemplary embodiment of the present invention receives a key value from the user 60, encodes it, and sends the encoded key as an RF control signal. And a unit (130, 140) for performing a process of projecting the laser beam by receiving the laser beam firing signal.

The key signal input unit 110a generates a keypad 111 composed of a plurality of key buttons for receiving a key value from the user 60, generates a key signal corresponding to a key button selected by the user, and generates the key signal. It is composed of a key signal generator 112 for transmitting to the RF transmitter (120).

The RF transmitter 120 is an encoder 121 for encoding a key signal generated through the key signal input unit 110a, and an RF converter 123 for converting the encoded key signal into an RF control signal and transmitting the RF signal to the receiver 20a. ), And an antenna 125.

On the other hand, the laser pointer drive switching unit 130 and the laser beam generator 140 is a unit for providing a laser pointer function to the user 60, the laser beam generator 140 is switched to the outside of the housing (Fig. 131a) generates a laser beam by the on operation of the laser pointer driving switching unit 130 protruding, and projects the laser beam in the distal direction of the remote controller 10a. At this time, the projected laser beam touches a screen, a chart, a board, or the like to form a laser point.

The transmission control unit 150 performs a function of controlling the interaction of the transmission units 110a and 120 and the signal flow in the remote controller 10a.

Meanwhile, the receiver 20a includes an RF receiver 210a, a key code generator / switcher 220a, an interface 230, a memory 240a, and a receiver controller 250.

The RF receiver 210a includes an antenna 211 for receiving an RF control signal transmitted from the remote controller 10a and an RF receiver 213, and a decoder 215 for decoding the received RF control signal. That is, the RF receiver 210a receives the RF control signal transmitted from the remote controller 10a through the antenna 211 and the RF receiver 213, and then decodes the RF control signal into the decoder 215 to decode the key signal. After extraction, the extracted key signal is transmitted to the key code generation / switching unit 220a.

The key code generator / switcher 220a generates a key code corresponding to the key signal transmitted from the RF receiver 210a. For example, the key code generation / switching unit 220a when the "◀" key button (see 111a in FIG. 3) of the keypad 111 is designated as the "Page Up" key value of the computer 30. ) Generates a numeric value of "33" defined by the "page up" key code in accordance with the key signal of the "◀" key button 111a. Similarly, the key code generation / switching unit 220a when the “▶” key button (see 111b in FIG. 3) of the keypad 111 is designated as the “Page Down” key value of the computer 30. Generates a numerical value of "34" defined by the "Page Down" key code according to the key signal of the "▶" key button 111b.

In addition, the key code generation / switching unit 220a analyzes the key signal transmitted from the RF receiver 210a, and converts the basic key value (key code) for the key signal into a key value (key code) set by the user. Perform the switching operation. To this end, when the key code generation / switching unit 220a receives the key signal from the RF receiver 210a, the key code generation / switching unit 220a calls the " key code switching control program 241a " stored in the memory 240a. Replace the default key value with the setting key value.

8 is a flowchart schematically showing an algorithm of the "key code change control program 241a" applied to the receiving apparatus 20a.

Referring to FIG. 8, when it is determined that the receiving device 20a is in the setting mode (S801), the "key code switching control program 241a" according to the preferred embodiment of the present invention is displayed on the keypad 111 from the computer 30. Receiving instruction information for replacing a basic key value with respect to a specific key signal of the same) with another key value (S802), and storing the instruction information as "setting key value information 242a" in the memory 240a. S803 is performed.

In addition, when it is determined that the receiving device 20a is in the use mode (S804), the "key code switching control program 241a" waits until the key code for the keypad 111 is received from the remote controller 10a. do. When the key code switching control program 241a receives a key signal related to the keypad 111 from the remote controller 10a (S805), the " setting key value information 242a " In operation S806, a check is performed to determine whether there is key code change information on the received key signal. For example, when the key code corresponding to the received key signal is an instruction of "33" indicating the "Page Up" key value of the computer 30, the "key code switching control program 241a" is the "setting key value". The change instruction information of " 33 "-" " " " " 32 " in the " information 242a " I think there is information to change.

Next, when the key code change control program 241a determines that there is key code change information for the key signal received in step S806, the key code corresponding to the received key signal is referred to as "set key value information ( 242a) is switched to the changed key code and applied to the interface unit 230 (S807).

On the other hand, when the "key code change control program 241a" determines that there is no key code change information for the key signal received in step S806, the key code corresponding to the received key signal is transmitted to the interface unit 230. It is applied (S808).

In accordance with the flow of S801 to S808 described above, the "key code switching control program 241a" completes the operation of changing the basic key value (key code) received from the remote controller 10a to the set key value (key code). do.

Meanwhile, the above-described "setting key value information 242a" may be stored in a nonvolatile memory such as an electrically erasable programmable read-only memory (EEPROM) or in a volatile memory such as a random access memory (RAM). Can be.

Referring back to FIG. 7, the interface unit 230 transmits a key code (key code relating to a basic key value or a setting key value) transmitted from the key code generation / switching unit 220a to the computer 30. Do this.

The memory 240a is a general operation of the presentation portable apparatuses 10a and 20a, for example, an RF communication operation between the remote controller 10a and the receiving apparatus 20a and between the receiving apparatus 20a and the computer 30. Programs for controlling an interlocking operation and a "key code change control program 241a" according to a preferred embodiment of the present invention are stored.

The reception controller 250 controls the interaction of the RF receiver 210a, the key code generator / switcher 220a, the interface 230, and the memory 240a and the flow of signals.

As described above, according to the present invention, since the receiving device 20a of the presentation portable devices 10a and 20a completes the operation of replacing the keypad 111 basic key value with the setting key value, the computer 30 No additional capability for changing the key value of the keypad 111 is required. Accordingly, regardless of the operating system type of the computer 30 used in conjunction with the presentation portable devices 10a and 20a, it is possible to change the basic key value of the keypad 111 to another key value.

10, 10a: Remote controller 20, 20a: Receiver
30: computer 40: projection device
50: display board 110, 110a: key signal input unit
111: keypad 113: key code generator
120: RF transmitter 121: encoder
123: RF converter 125: antenna
130: laser pointer driving switching unit 140: laser beam generating unit
150: transmission control unit 210: RF receiver
211: antenna 213: RF receiver
215: decoder 220: key code switching unit
230: interface unit 240, 240a: memory unit
241 and 241a: key code switching program 250: receiving control unit
310: I / O port

Claims (16)

In the host device control method of the presentation portable device comprising a remote controller for remotely controlling a host device and a receiving device connected to the host device to wirelessly intervene between the host device and the remote controller. The device,
(a) receiving a key code corresponding to a specific key button of the remote controller from the remote controller;
(b) determining whether there is change information for the key code instructing to change the specific key code received from the remote controller to another key code; And
(c) if it is determined in step (b) that change information for the key code exists, transferring the key code to the host device by replacing the key code with the changed key code according to the change information. Characterized in that the host device control method. The method of claim 1,
Before the step (a), the receiving device,
and (a0) storing the change information of the key code in a memory. delete A remote controller for remotely controlling the host device; And
A receiver connected to the host device to wirelessly mediate between the host device and the remote controller,
If the receiving device receives a key code from the remote controller and determines that there is change information instructing to change a specific key code received from the remote controller into another key code, the receiving device receives the key code from the remote controller. And a key code changed according to the change information and transferred to the host device.
delete A key signal input unit for generating a key code corresponding to the key signal according to a key signal of a keypad, an RF transmitter for converting the key code into an RF control signal, and transmitting the RF code; And a remote controller for controlling a signal flow; And
An RF receiver for receiving the RF control signal transmitted from the remote controller and extracting the key code, a key code switching unit for changing the key code into another key code, and a key code transferred from the key code switching unit A memory unit storing an interface unit for transmitting to the control unit; a memory unit storing a control program for changing the key code to another key code; Consists of a receiving device including,
The control program for changing the key code to another key code,
(a) receiving a key code for a specific key button of the keypad from the remote controller;
(b) determining whether change information for the key code exists; And
(c) if it is determined in step (b) that there is change information for the key code, replacing the key code with another key code according to the change information,
The change information of step (b) is information indicating to change a specific key code received from the remote controller to another key code, and is previously stored in the memory before the step (b). Portable presentation device.
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