DE102013100855B4 - Input device and method for enlarging a display image - Google Patents

Abstract

A method for enlarging a display image by means of an input device, in particular a method suitable for enlarging the display image of a computer, wherein the input device receives a notification command from a computer (S101), the notification command indicating whether an operating system of the computer provides system magnification represents (S103). When the operating system supports a system magnifier, a function key is pressed so that the input device gives the computer a first magnification instruction (S105), by which the computer activates the system magnifier of the operating system to enlarge the display image (S107). If the operating system does not support a system magnifier, a function key is pressed so that the input device gives the computer a second magnification instruction (S109), which activates a software magnifying glass to enlarge the display image (S111).

Description

The invention relates to an input device for a computer and to a method for enlarging a display image.

Multifunctionality and compactness represent the development tendency of telecommunications products. In order to display a display image in detail and beautifully on a screen of a telecommunications product, the screen is usually set to a high-resolution module. This will make the drawings and characters on the screen smaller. This presents the short-sighted, old-sighted or weak-sighted or the like, as well as those who browse the drawings and the characters on the screen or have to watch closely, difficulties. Nowadays, telecommunications products have a magnifying function that can enlarge the display image on a screen.

US 2009/0 094 550 A1 shows a method for enlarging a display image in which a system magnifier is integrated into an operating system of a computer and in which the system magnifier can be activated across programs using a combination of keys.

US 6,909,423 B2 shows an input device for a computer that automatically detects an operating system of the computer and that switches depending on this detection in an operating mode in which the input device is compatible with the computer.

The invention has for its object to provide an input device and a method for enlarging a display image, which avoids the disadvantages mentioned above by simple measures.

This object is achieved by a method for enlarging a display image having the features specified in claim 1, 4 and 6 features, and by an input device having the features specified in claim 9. Further advantageous developments of the invention will become apparent from the dependent claims.

According to the invention, the input device receives a message command or a transmission signal of a computer. The message command and the transmission signal indicate whether the operating system provides a system magnifier. By pressing a function key, the input device gives the computer a first or a second magnification instruction. The first and second magnification instructions increase the size of the display image of the computer. By the method, the platform independence of the input device can be increased, whereby the enlargement of the display image is easier to perform. This ensures that the input device can be used to enlarge the display image in different operating systems.

In the following the invention and its embodiments will be explained in more detail with reference to the drawing. In the drawing shows:

1 a flowchart of a first embodiment of a method according to the invention for enlarging a display image by an input device;

2 a flowchart of a second embodiment of a method according to the invention for enlarging a display image by an input device; and

3 a functional block diagram of an input device according to the invention for enlarging a display image.

[First Embodiment]

In 1 FIG. 3 shows a flow chart of a first exemplary embodiment of a method according to the invention for enlarging a display image by an input device. This enlargement method is used for enlarging a display image of a computer and has the following steps.

In step S101, the input device first receives a message command from a computer. The input device can be used as z. As mouse, keyboard or graphics tablet. In this embodiment, however, the embodiments of the input device are limited thereto. HID (Human Interface Device Class) computers allow computers to discover and identify their peripherals, including their input devices and their functions. Of course, computers can also create their own commands to give their peripherals, including their input devices, a notification command. This informs the peripherals, including the input devices, as to whether the computer can provide a system magnifier.

Specifically, a computer is installed with application software that includes a software magnifier. When the application software receives version information of the operating system from the computer, it forwards this information using HID. The application software software magnifier performs the same function as the system magnifier of the operating system through which the display image can be increased. This will not be discussed here.

In step S103, the notification command indicates whether the operating system is providing a system magnifier. If the input device is connected to a computer via the connection interface, the input device receives the message command from the computer. This informs the input device as to whether the computer's operating system provides a system magnifier. If the operating system is Windows Vista or its updated versions, this operating system has a system magnifier. However, if the operating system is Windows XP or earlier versions, this operating system does not have a system magnifier.

In this way, the input device can detect whether the computer has a system magnifier with the aid of the notification command of the computer. If the operating system has a system magnifier, step S105 and step S107 are performed, in which the input device forwards a first magnification instruction to the computer. If there is no system magnifier in the operating system, step S109 and step S111 are performed, in which the input device issues a second magnification instruction to the computer.

Through the transmission process of the first and the second magnification instruction, the input device according to the invention can be used in different operating systems or their different versions for enlarging a display image. Here, the notification command is forwarded by means of the application software to the input device. This determines whether the input device gives the computer the first or the second magnification instruction.

If the input device, under the action of the application software, gives the computer the first magnification instruction, namely, if step S103 is affirmative, step S105 is executed, in which a function key is depressed to cause the input device to give the computer a first magnification instruction. During execution, a function key is pressed when the operating system has a system magnifier for the input device to give the computer a first magnification instruction. The first magnification instruction activates the system magnifier of the operating system to enlarge the display image.

Specifically, the input device gives the computer a first magnification instruction. The computer's operating system then receives the first magnification instruction, thus activating its system magnifier. In other embodiments, the application software may use a setting value to determine whether the system magnifier or the software magnifier is used to enlarge the display image when the operating system supports the system magnifier. If the operating system supports the system magnifier, a first or second incremental instruction is passed to the computer by pressing a function key on the input device and using the setting value of the application software. The setting value of the software is used to determine whether the first or second magnification instructions are used to enlarge the display image. In this way, you can either use the adjustment value for either the system magnifier or the software loupe to magnify the display image.

In the exemplary embodiment, the software is set so that the system magnifier of the operating system is preferred. In other embodiments, however, the software may be set to prefer the software magnifier. Alternatively, depending on the user's habit or need, the software may be set to prefer the system magnifier or the software magnifier. In this case, setting the application software is not limited.

It should be noted that the first incrementation instruction contains combination key signals of the operating system. In the embodiment, the first magnification instruction comprises a group of combination key signals, such as a group of combination key signals. B. combination key signals for activating the system magnifier, time delay signal and combination key signals for setting the system magnifier on. For example, the keyboard shortcut to enable the system magnifier may consist of "win-key" and "+". The key combination for setting the system magnifier may consist, for example, of "win-key" and "L". In this way, in step S107, the system magnifier of the operating system can be activated by the first magnification instruction to enlarge the display image either in full screen or not in full screen.

In other embodiments, the first magnification instruction may represent a series of sequence signals for activating the system magnifier and for adjusting the magnification rate of the system magnifier. For example, the first magnification instruction signals of the key combination of "win-key" and time delay signals and signals of the key combination of "win-key" and "+" designed to set the magnification. In this way the system magnifier can be activated and the magnification adjusted. however the first magnification instruction is subject to no restriction.

Should the input device, under the action of the application software, give the second magnification instruction to the computer, that is, if the question is answered in the negative in step S103, step S109 is executed, in which a function key is pressed for the input device to issue a second magnification instruction to the computer. During execution, the function key is pressed so that the input device issues a second magnification instruction to the computer if the operating system does not have a system magnifier. The second magnification instruction enlarges the display image.

Specifically, the input device issues a second magnification instruction to the computer. The application software then receives the second magnification instruction and activates the software magnifier. In the embodiment, the second magnification instruction may be, for example, combination key signals of the application software. For example, the second magnification instruction may be designed as a mouse's tactile signal or as a manufacturer's instruction corresponding to the USB HID. The key signal of the mouse can be a fourth, a fifth or a sixth key signal. By means of the signal, the second magnification instruction is forwarded to the application software. After receiving the second magnification instruction, the application software activates the software magnifier. Thus, in step S111, the display image of a computer is enlarged by the application software activating the software magnifying glass by the second magnification instruction. The execution of the second magnification instruction is subject to no restriction.

It should be noted that here an application software is installed in a computer to enlarge the display image using an input device. The application software receives version information of the computer and forwards this information via HID to the input device. In this case, a function key is pressed such that the input device gives the computer either a first or a second magnification instruction. In this way, the input device can be used to enlarge a display image in various operating systems.

Second Embodiment

In 2 a flowchart of a second embodiment of a method according to the invention for enlarging a display image by an input device is shown.

In step S201, an input device is connected to a computer via a connection interface. The connection interface can be designed as USB, Mini USB or Micro USB, to which the invention should not be limited. In the OS DESCRIPTOR of the input device, the device category, namely the HID class such as 03h, the vendor ID requested at the SB Implementers Forum such as. For example, 046D, the manufacturer's Product ID, such as C517, and the Version Number of the input device. Using this identification number, the computer can recognize and identify the function of the input device when connecting an input device.

In step S203, it is detected by means of a transmission signal whether the operating system of a computer provides a system magnifier. When executed, the input device receives the transmission signal from the computer to detect if the operating system of the computer has a system magnifier. When the input device is connected to the computer through the connection interface, the input device may also detect the version of the computer.

Suppose that the input device is suitable for Windows Vista. If the input device is connected to the computer and the computer supports the version of the input device, a valid OS_STRING is requested as feedback from OS Descriptors.

For example, computers running Windows Vista or its upgraded version can provide the input device with a valid OS_STRING. On the other hand, if the computer does not support the version of the input device, the requested valid OS_STRING is omitted from the computer. Instead, registry entries are used. For example, the registry entries are used in Windows XP or earlier versions. The registry entries allow the input device to capture whether the computer's operating system is Windows Vista or earlier versions of Windows XP. In the invention, the connection between the connection interface of the input device and the computer is not limited.

Specifically, the input device has application firmware. Using a transmission signal, the application firmware receives version information of the operating system. According to the version information, the application firmware determines whether the operating system provides a system magnifier.

It should be noted that the operating systems of Apple and Microsoft when connecting the Input devices or similar peripherals have different detection methods. For example, when input devices are connected to an Apple operating system through the connection interface, only the mouse is detected by the Apple operating system. On the other hand, the keyboard is not detected. When input devices connect to an operating system from Microsoft through the connection interface, the mouse first registers the mouse and then the keyboard. Based on Apple's and Microsoft's different detection techniques, it can be determined whether the input devices are connected to an Apple or Microsoft operating system through the connection interface.

In this way, the input device receives information from the computer as to whether the computer has a software magnifier. If the transmission signal indicates that the operating system has a software magnifier, step S205 and step S207 are performed, in which the input device issues a first magnification instruction to the computer. On the other hand, if the transmission signal indicates that the operating system does not have a software magnifier, step S209 and step S211 are performed, in which the input device issues a second magnification instruction to the computer.

By transmitting process of the first and the second magnification instruction, the input device according to the invention can be used in different operating systems or their different versions to increase the corresponding display image. In this case, the transmission signal is received by the application firmware of the input device. This determines whether the input device gives the computer the first or the second magnification instruction.

Should the operating system support a system magnifier, the application firmware determines that the input device is giving the computer an initial magnification instruction. Namely, if step S203 is affirmative, step S205 is executed in which a function key is depressed to cause the input device to give the computer a first magnification instruction. In step 207, the system magnifier of the operating system is activated to enlarge the display image by the first magnification instruction.

If the application firmware detects that the operating system has a system magnifier, a first incremental instruction is passed from the application firmware to the computer through HID. Here, the first incremental instruction is combination key signals of the operating system. The first magnification instruction in this embodiment is the same as that in the first embodiment. That's why we do not go into it here.

If the operating system does not support the system magnifier, the application firmware determines that the input device is giving the computer the second magnification instruction. Namely, if the question is answered in the negative in the step S203, the step S209 is carried out in which a function key is depressed so that the input device gives the computer a second magnification instruction. In step S211, the display image is enlarged by the second enlargement instruction.

Specifically, the input device issues a second magnification instruction to the computer. The application software then receives the second magnification instruction and thus activates the software magnifier. In the embodiment, the second magnification instruction may be combination key signals of the application software. For example, the second magnification instruction can be designed as a mouse signal or as a manufacturer's recommendation. The second enlargement instruction in this embodiment is the same as the second enlargement instruction in the first embodiment. So we do not go into that here. The software magnifier has the same function as the system magnifier, which can magnify the display image. This is not discussed further.

[Third Embodiment]

In 3 is a functional block diagram of an input device according to the invention 1 for enlarging a display image, wherein the input device 1 in a computer 9 can be used. The input device 1 has a control unit 10 , an input unit 12 and a connection interface 14 on.

The control unit 10 is to the input unit 12 and the connection interface 14 coupled. In the execution, the control unit 10 be designed as a central processor (CPU) or as a microcontroller, etc., to compute and process the signals in the input device 1 perform. Should the control unit 10 through the connection interface 14 to a computer 9 be connected, can be detected, whether the operating system of the computer 9 has a system magnifier. The design of the control unit 10 is subject to no restriction.

The connection interface 14 is to the control unit 10 coupled. The connection interface 14 can be designed as USB, Mini USB or Micro USB. The technology of the connection interface 14 is familiar in the art. That's why you can use the connection interface 14 be executed arbitrarily.

The input unit 12 is to the control unit 10 coupled and has a function key 120 on. During execution, the input unit 12 be designed as a left and right button of a mouse, as a mouse wheel, as a displacement sensor of a mouse or keyboard key. When pressing, rolling or moving the input unit 12 arises a corresponding input signal to the control unit 10 is forwarded. The function of the input unit 12 is technically familiar. So we do not go into that here.

If the operating system supports the system magnifier, the function key becomes 120 pressed, such that the input device 1 the computer 9 issued a first magnification instruction. The first magnification instruction will make the operating system magnifier magnify the display image of the computer 9 activated. If the operating system does not support the system magnifier, the function key becomes 120 so pressed that input device 1 the computer 9 issued a second magnification instruction. The second magnification instruction becomes the display image of the computer 9 increased.

For example, a mouse has a function key 120 on. To enlarge a display image, press the function key 120 pressed. In this case, the mouse gives the computer 9 a first and a second magnification instruction to the display image of the computer 9 to enlarge. To reset the display image to its original size, press the function key 120 pressed again. In this case, the mouse gives the computer 9 an off command to reset the display image to its original size.

In other embodiments, one can also use the function key 120 Confirm several times to activate, set and deactivate the system magnifier. For example, when you first press the function key, the mouse will give you 120 the computer 9 a first and a second magnification instruction, respectively, to enlarge the display image. When the function key is pressed for the second time 120 the magnification of the display image is set. As a result, the display image can be tripled, quadrupled, quintupled or enlarged several times, for example. The third time you press the function key 120 the display image will be reset to the original size. Of course, the function key 120 be set, such that the above-mentioned functions only when permanently pressing the function key 120 can be executed. The execution of the function key 120 is subject to no restriction.

As above, an input device of the invention receives a notification command and a transmission signal of a computer, respectively. The message command and the transmission signal indicate whether the operating system provides a system magnifier. By pressing a function key, the input device gives the computer a first or a second magnification instruction. The first and second magnification instructions increase the size of the display image of the computer. By the method, the platform independence of the input device can be increased, whereby the enlargement of the display image is easier to perform. This ensures that the input device can be used to enlarge the display image in different operating systems.

LIST OF REFERENCE NUMBERS

1

input device

9

computer

10

control unit

12

input unit

120

function key

14

Connection interface

S101 ~ S111

step

S201 ~ S211

step

Claims (9)

Method for enlarging a display image of a computer ( 9 ), on which an application software is installed, which provides a software magnifier, by means of an input device ( 1 ), which has a control unit ( 10 ), an input unit ( 12 ) with a function key ( 120 ) and a connection interface ( 14 ), wherein the input unit ( 12 ) via the control unit ( 10 ) with the connection interface ( 14 ) and wherein the input device ( 1 ) via the connection interface ( 14 ) to the computer ( 9 in the method: the application software receives version information of the operating system and generates a notification command containing the version information, the input device ( 1 ) the message command of the computer ( 9 ) receives (S101), the notification command indicating whether the operating system of the computer provides system magnification (S103); wherein, when the operating system provides the system magnifier, in response to a press of the function key ( 120 ) the control unit ( 10 ) of the input device ( 1 ) the computer ( 9 ) issues a first magnification instruction (S105) which causes the system magnifier of the operating system to enlarge the operating system Display image is activated (S107), the first magnification instruction including a combination key signal for activating the system magnifier, a time delay signal, and a combination key signal for setting the system magnifier; and wherein, if the operating system does not provide a system magnifier, in response to a press of the function key ( 120 ) the control unit ( 10 ) of the input device ( 1 ) the computer ( 9 ) issues a second magnification instruction (S109) by which the software magnifying glass for enlarging the display image is activated (S111). A method according to claim 1, characterized in that the application software receives the second magnification instruction and activates the software magnifier. A method according to claim 1, characterized in that the second magnification instruction is mouse button signals or commands given by the manufacturer. Method for enlarging a display image of a computer ( 9 ), on which an application software is installed, which provides a software magnifier, by means of an input device, the control unit ( 10 ), an input unit ( 12 ) with a function key ( 120 ) and a connection interface ( 14 ), wherein the input unit ( 12 ) via the control unit ( 10 ) with the connection interface ( 14 ) and wherein the input device ( 1 ) via the connection interface ( 14 ) to the computer ( 9 in the method: the application software receives version information of the operating system and generates a notification command containing the version information, the input device ( 1 ) the message command of the computer ( 9 ), the notification command indicating whether the operating system of the computer ( 9 ) provides a system magnifier; a setting value is provided; wherein, when the operating system provides the system magnifier, the control unit ( 10 ) of the input device ( 1 ) the computer ( 9 ) in response to a press of the function key ( 120 ) and according to the setting value, giving a first or a second magnification instruction, wherein the setting value determines whether the first or the second magnification instruction is used to enlarge the display image; wherein, when the operating system does not provide a system magnifier, in response to a press of the function key ( 120 ) the control unit ( 10 ) of the input device ( 1 ) the computer ( 9 ) issues the second magnification instruction; and wherein the system magnifier of the operating system is activated by the first magnification instruction to enlarge the display image, wherein the software magnifier is activated by the second magnification instruction to enlarge the display image, and wherein the first magnification instruction is a combination key signal for activating the system magnifier Time delay signal and a combination key signal for setting the system magnifier contains. A method according to claim 4, characterized in that the second magnification instruction is mouse button signals or commands given by the manufacturer. Method for enlarging a display image of a computer ( 9 ), on which an application software is installed, which provides a software magnifier, by means of an input device, the control unit ( 10 ), an input unit ( 12 ) with a function key ( 120 ) and a connection interface ( 14 ), wherein the input unit ( 12 ) via the control unit ( 10 ) with the connection interface ( 14 ) and wherein the input device ( 1 ) via the connection interface ( 14 ) to the computer ( 9 ), wherein the method: determines whether the operating system of the computer ( 9 ) provides a system magnifier (S203) based on one of the computer ( 9 ) and via the connection interface ( 14 ) received transmission signal; wherein, when the operating system provides the system magnifier, in response to a press of the function key ( 120 ) the control unit ( 10 ) of the input device ( 1 ) the computer ( 9 ) issues a first magnification instruction (S205) by which the computer ( 9 ) the system magnifier of the operating system for enlarging the display image is activated (S207), the first magnification instruction including a combination key signal for activating the system magnifier, a time delay signal and a combination key signals for setting the system magnifier; and wherein, if the operating system does not provide a system magnifier, in response to a press of the function key ( 120 ) the control unit ( 10 ) of the input device ( 1 ) the computer ( 9 ) issues a second magnification instruction (S209) which activates the software magnifier to enlarge the display image (S211). A method according to claim 6, characterized in that the application software activates the software magnifier when it receives the second magnification instruction. A method according to claim 6, characterized in that the second magnification instruction is mouse button signals or commands given by the manufacturer. Input device ( 1 ) for enlarging a display image of a computer ( 9 ) comprising: a control unit ( 10 ); an input unit ( 12 ) connected to the control unit ( 10 ) and a function key ( 120 ) having; and a connection interface ( 14 ) connected to the control unit ( 10 ) connected; being on the computer ( 9 ) an application software is installed, which provides a software magnifier, and the application software version information of an operating system of the computer ( 9 ) and generates a message command containing the version information, wherein if the connection interface ( 14 ) of the input device ( 1 ) with the computer ( 9 ), the control unit ( 10 ) receives the notification command and detects whether the operating system of the computer ( 9 ) provides a system magnifier; wherein, when the operating system provides the system magnifier, in response to a press of the function key ( 120 ) the control unit ( 10 ) of the input device ( 1 ) the computer ( 9 ) provides a first magnification instruction which causes the system magnifier of the operating system to enlarge the display image of the computer ( 9 ), the first magnification instruction including a combination key signal for activating the system magnifier, a time delay signal, and a combination key signal for adjusting the system magnifier; and wherein, if the operating system does not provide a system magnifier, in response to a press of the function key ( 120 ) the control unit ( 10 ) of the input device ( 1 ) the computer ( 9 ) issues a second magnification instruction that activates the software magnifier to enlarge the display image.

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