JPH0336238B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a key input device for a course guidance device, and in particular, a key input device for a course guidance device, which has control modes for a plurality of functions including a traveling trajectory display function, a map search function, and a planned course input function. Relating to a key input device that simplifies switching control between multiple control modes and adapts the operation to the user's sense of operation when adopting a menu system using function keys in a course guidance device. It is something.

Prior to filing the present application, the applicants of the present application proposed a course guidance device that displays the travel trajectory of a moving object based on detection signals from a direction sensor and a speed sensor mounted on the moving object and guides the travel course. is going on. In addition to the above-mentioned driving trajectory display function, the course guidance device also has a map display function, for example, a map search function to select a desired map from a large number of maps recorded on a micro film, a travel planned course input function, A guidance function that is performed when the moving object approaches a predetermined point, a planned course correction function that changes the planned course set by the planned travel course function, and output values of the direction sensor and speed sensor. It is equipped with various functions such as a sensor output correction function for correcting the data, and in order to execute these functions, it is necessary to perform key input operations under the control mode corresponding to each function. When performing such key input operations, there is a so-called menu method in which an input key is commonly used under each control mode, and the key input by the input key is assigned a meaning corresponding to each control mode. Are known. FIG. 1 shows a conventional example of this type of control mode switching system. That is, the conventional example shown in FIG. 1 allows direct transition from each control mode to any other control mode. For example, direct transition from #2 control mode to #1, #3, or #4 control mode is possible.

The conventional example shown in Figure 1 has the advantage that the control mode can be directly transferred from each control mode to any other control mode. The methods become complicated. Therefore, when a specific control mode, that is, a control mode for displaying a travel trajectory in correspondence with a map, is used frequently, and other control modes are used less frequently, as in the case of the above-mentioned course guidance device, the As shown in Figure 2, a frequently used specific control mode (referred to as basic control mode in this specification), that is, control mode #1 shown in the figure, is used as a key station to shift to other control modes. This method is preferable because it requires less hardware configuration of the control mode switching means, reduces erroneous operations, and is compatible with the user's operating feeling. In other words, since the basic control mode described above can be regarded as the "main control mode" and the other control modes as "secondary control modes," the transition to each control mode should be made via the "main control mode" described above. This is why it is well suited to the sense of use.

The present invention has been made based on the above considerations, and an object of the present invention is to provide a key input device that is compatible with a course guidance device and that can simplify control means for switching to a control mode. Therefore, the key input device in the course guidance device of the present invention has a control mode for a plurality of functions regarding course guidance of a moving body, including a travel trajectory display function, a map search function, and a planned course input function. The input device displays a plurality of function keys that can be commonly used to perform key inputs in each of the plurality of control modes, and a travel trajectory in correspondence with a map among the plurality of control modes. A basic mode selection key that selects a basic control mode to be used, a plurality of general mode selection keys that select each control mode other than the basic control mode, and a key input using the basic mode selection key to select a control mode other than the basic control mode. a basic mode switching control section that switches from the control mode to the basic control mode, and a general mode switching control section that switches from the basic control mode to another control mode by key input using the general mode selection key, Conversion from one of the control modes other than the control mode to another control mode other than the basic control mode is configured such that conversion is not performed until the basic control mode is once returned. There is. This will be explained below with reference to the drawings.

FIG. 3 is a front view of a keyboard according to an embodiment of the present invention, and FIG. 4 is a block diagram showing the configuration of an embodiment of the present invention. Reference numeral 1 in the figure is a mode display section, 1a to 1d are indicator lights indicating #1 to #4 control modes, which are composed of display LEDs, for example, and 2 is a control mode conversion section,
2a to 2c are mode selection keys for selecting control modes #2 to #4, 3 is a key input section, 3a to 3i are function keys, 4 is an end key, 5 is a D flip-flop,
6 represents a gate with inhibit input, and 7 represents a decoder.

Key input operations in the present invention will be explained with reference to FIG. In the embodiment shown in FIG. 3, there are four types of control modes, where #1 control mode is the basic control mode according to the present invention, and #2 control mode is the basic control mode according to the present invention.
to #4 control mode are other control modes. The function keys 3a to 3i in the key input section 3 are the above-mentioned #1 to #4.
It goes without saying that key inputs are commonly used in any of the control modes, but have meanings corresponding to the respective control modes. In the present invention, switching to a control mode other than the basic control mode described above cannot be performed unless the state is once returned to the basic control mode. For example, if the current control mode state is the #1 control mode (indicator lamp 1a is lit), it is possible to switch to a desired control mode by pressing any one of the mode selection keys 2a to 2c. It is now assumed that the mode selection key 2a is pressed to switch to the #2 control mode (at this time, the indicator light 1b lights up). In this state, it is not possible to switch to the #3 or #4 control mode even if the mode selection key 2b or 2c is pressed. That is, it is not possible to switch to control mode #3 or #4 unless the operation under #2 control mode is completed and the mode is returned to #1 control mode by pressing the end key 4. Not possible (in that sense, the above exit key 4
may be considered the key to select #1 control mode).

Next, the control mode switching operation in the present invention is as follows.
This will be explained in detail with reference to FIG.

In FIG. 4, numerals 1 to 4 correspond to those in FIG. And D flip flop 5
outputs a signal that is inverted according to input signals from the end key 4 and a decoder 7, which will be described later. That is,
For example, the D flip-flop 5 outputs a logic "1" in response to an input signal from the end key 4, and its output is inverted and outputs a logic "0" in response to an input signal from the decoder 7. It is something to do.
The prohibition input gate 6 prohibits or permits passage of key input from the control mode switching section 2 based on the output signal of the D flip-flop 5. That is, in the embodiment shown in FIG.
The output of the above D flip-flop 5 is logic "0"
At this time, passage of key input from the control mode switching unit 2 is prohibited, and the D flip-flop 5
When the output is logic "1", passage of the key input from the control mode switching section 2 is permitted, and information for selecting the #1 control mode is transferred to the decoder 7. The decoder 7 outputs the key input from the key input section 3 based on the control mode corresponding to the control mode information from the inhibit input gate 6. That is, key inputs from the key input section 3 are given meanings based on the respective control modes and output. Further, the decoder 7 determines which of the indicator lights 1a to 1d (shown in FIG. 3) in the display unit 1 corresponds to the control mode based on the content of the control mode information transferred from the gate 6 with prohibition input. It outputs a signal to turn on the D flip-flop 5, and also outputs a signal to invert the output of the D flip-flop 5 when the content of the control mode information is one of the control modes #2 to #4 described above. Output.

Now, when the control mode of the key input device of the present invention is the #1 control mode, that is, the above-mentioned flip
The output of the flop 5 is logic "1", the gate with prohibition input 6 is in the pass permission state for the key input from the control mode switching section 2, and the decoder 7 is in the key input section 3.
When the key input from
For example, when the #2 mode selection key 2a (shown in FIG. 3) is pressed in the control mode switching section 2, the key input (#2 control mode selection information) is transmitted to the decoder 7 via the inhibit input gate 6. will be forwarded to. The decoder 7 is switched to the #2 control mode, and as described above, the key input from the key input unit 3 is output as a key input having a meaning corresponding to the #2 control mode, and the display lamp 1b on the display unit 1 is output. It outputs a signal that turns on the D flip-flop 5, and also outputs a signal that inverts the output of the D flip-flop 5. As a result, the output of the flip-flop 5 is inverted to logic "0", so that the prohibition input gate 6 prohibits the passage of a new key input from the control mode switching section 2, as described above. Therefore, any subsequent key input from the control mode switching section 2 will not be transferred to the decoder 7. That is, #1 in the present invention
Switching to a control mode other than the control mode will be prohibited.

When the key input operation under the #2 control mode is completed, by pressing the end key 4, the control mode in the key input device of the present invention returns to the #1 control mode. As described above, it is also possible to switch to the control modes #2 to #4 by key input from the control mode switching section 2 after that.

Note that although the illustrated embodiments in FIGS. 2 to 4 show cases where there are four types of control modes, the present invention is not limited to this, and the embodiments illustrated in FIGS. Needless to say, it is possible to perform the same procedure in any case.

As explained below, according to the present invention, in a key input device for a course guidance device having a plurality of control modes, when switching the control mode, the control mode other than the basic control mode displays the traveling trajectory in correspondence with the map. Switching from one of the modes to another control mode other than the basic control mode is as follows:
By making it possible to perform operations after once returning to the basic control mode, the hardware configuration of the control mode switching means is simplified, and
It is possible to prevent erroneous key input operations corresponding to each control mode, and to perform key input operations that are well suited to the user's operating sense.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a conventional example of a control mode switching method in a key input device, FIG. 2 is an explanatory diagram of a control mode switching method in the present invention, and FIG. 3 is a front view of a keyboard in an embodiment of the present invention. , FIG. 4 is a block diagram showing the configuration of an embodiment of the present invention. In the figure, 1 is a mode display section, 1a to 1d are indicator lamps, 2 is a control mode switching section, 2a to 2c are mode selection keys, 3 is a key input section, 3a to 3
i is a function key, 4 is an end key, 5 is a D flip-flop, 6 is a gate with inhibit input,
7 represents a decoder.

Claims (1)

[Claims] 1. In a key input device for a course guidance device having control modes for a plurality of functions regarding course guidance of a moving object, including a traveling trajectory display function, a map search function, and a planned course input function, key input in each of the plurality of control modes is provided. a plurality of function keys that can be used in common when executing the above, a basic mode selection key that selects a basic control mode that displays the travel trajectory in correspondence with a map among the plurality of control modes; A plurality of general mode selection keys for selecting each control mode other than the basic control mode, and basic mode switching control for switching from a control mode other than the basic control mode to the basic control mode by key input using the basic mode selection key. and a general mode switching control section that switches from the basic control mode to another control mode by key input using the general mode selection key, and the general mode switching control section switches from one of the control modes other than the basic control mode to the basic control mode. 1. A key input device for a course guidance device, characterized in that conversion to a control mode other than the above is performed only after the basic control mode is once returned.