JPS61198287A - Display unit for vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a vehicle display device that selectively switches and displays various vehicle information on a single display section.

[Technical background of the invention and its problems]

Conventionally, this type of display device is disclosed in, for example, Japanese Patent Application Laid-Open No. 58-82゜1.
Many proposals have been made, such as No. 19 and JP-A No. 56-611. These display devices are equipped with a selection keyboard that switches and displays various types of information on the same display.
There are known devices that have designated keys that correspond one-to-one with each piece of information, or devices that use a one-key type to sequentially switch and display information.

However, as the amount of information increases, the number of designated keys increases accordingly, which not only increases the size of the keyboard itself, but also requires consideration of an easy-to-identify key layout. Furthermore, the latter has the problem that key operations to obtain desired information are cumbersome and time consuming.

[Purpose of the invention]

The present invention divides arbitrary information selected from various types of information into blocks of information of the same type, and displays them cyclically by operating keys corresponding to each information block, so that even when the amount of information increases, The object of the present invention is to provide a display device that is easier to handle without hindering the simplification of the keyboard.

[Summary of the invention]

Arbitrary various types of information are divided into information blocks classified into multiple information units of the same system, and one selection key is provided corresponding to each information block, and by operating this selection key, each information block in the corresponding information block is It is characterized by cyclically switching and displaying information.

[Embodiments of the invention]

FIG. 1 is a circuit block diagram showing one embodiment of the present invention, which will be explained together with the display device of FIG. 2 showing the correspondence between a display section and a keyboard.

The sensor unit 1 includes a clock generator 2 that generates a time signal;
A distance sensor 3 that outputs a pulse signal every time the vehicle travels a predetermined distance, for example 10 meters, and a fuel that converts the output voltage of a sliding resistance connected to a float in the fuel tank from analog to digital and outputs a digital signal corresponding to the remaining amount of fuel. It includes a remaining amount sensor 4 and a flow rate sensor 5 that outputs a pulse signal every predetermined (for example, Ice) fuel consumption amount. The display processing means 6 manually inputs the various sensor outputs, and for example, clocks the time signal from the clock generator 2 using an internal clock mechanism.
The outputs of the distance sensor 3 and flow rate sensor 5 are counted up to obtain the travel distance and fuel consumption, and further, by processing these data, the average vehicle speed or average fuel consumption from the start is calculated. Calculate.

The memory 7 sequentially stores various data obtained by the processing circuit 6, and data that changes from time to time is written to the address corresponding to each data, and is further read out as base data for new calculations. , new data is repeatedly rewritten.

The control means 8 reads the display data designated by the selection signal from the keyboard 9 from the corresponding address in the memory 7 (sends a command signal to the display processing means 6).

The display processing means 6 reads designated display data from the corresponding address in the memory 7 based on the command signal from the control means 8, and displays the designated data on the display 11 via the driver IO.

The display 11 has a common display section that switches and displays a plurality of pieces of information, and this common display section can be constructed of, for example, a liquid crystal cell that displays various display formats such as mouth-shaped segments and donmatrix display.

Display processing means 6, memory 7 in the above block configuration,
It goes without saying that the control means 8 can be constituted by a microcomputer.

FIG. 2 shows an example of the appearance of the vehicle display device according to the present invention.
Adopt girder mouth-shaped segments. Keyboard 9 has 3
Selection key switches 13, 14, 15 and another data control key switch 16 are arranged.

The displayed information is divided into three types of information: fuel system, mileage system, and time system according to the configuration shown in Fig. 1.The information that can be switched with the key switch 13 corresponding to the fuel system is Three pieces of information are sorted: the "remaining amount of fuel" in the tank, the "average fuel consumption" since the start, and the "instantaneous fuel consumption" in units of 3 seconds, for example, and the information that can be switched with the key switch 14 corresponding to the mileage system is displayed at the start. Three pieces of information are sorted: the total mileage from time r↑0TALJ, the mileage of an arbitrary section rTRIPJ, and the "expected mileage" that can be covered with the current average fuel consumption using the fuel needle, and then the key switch 15 corresponding to the time system is used to sort the information. The information that can be switched is divided into two types: the current "time" and the "elapsed time" from the start.

In this case, in order to distinguish various display information, display points may be provided using lighting lamps corresponding to the symbol marks printed on the keyboard 9, or each identification symbol may be formed as an electrode on a part of the common display section 12. It may also be configured to selectively display this.

Here, the selection display of various information by pressing the selection key switches 13 to 15 is configured to cyclically switch and derive the information in the information block corresponding to the operation, but the cyclic switching of the information display is Alternatively, the display may be displayed dynamically at a predetermined period while the key switch is being pressed, or the display may be switched for each press.

The above display switching can be easily accomplished by a microcomputer, but the control means 8 can also be constructed with logic as shown in FIG. In order to simplify the explanation, here, we will show a configuration in which the same system of information blocks is divided into two blocks, and each block displays four items of information in a switched manner for each button. Needless to say, a similar configuration can be applied to.

In the embodiment shown in FIG. 3, when the information block is switched, the last information displayed previously is displayed as the first display information in the newly designated information block. Block designation information can be displayed with a single button switching operation.

Next, to explain the specific configuration, the two key switches 17 and 18 provided on the keyboard 9 have a resistance of 1 when opened and closed.
It is always grounded through 9.20 and has a configuration in which the output is inverted to H. The control means 8 includes the key switch 17
．． a 2-bit counter 21.22 that counts the inversion of the output of the counter 18; a flip-flop 23 that alternately switches and controls the active state of each counter 21, 22;
NAND gates 24, 25 and AND gates 26, a latch circuit 27 that latches the 2-bit outputs of each of the counters 21 and 22 and outputs them to the display processing means 6, and inversion of the outputs of the key switches 17, 18. To the latch circuit 27 Here, from the control means 8 to the display processing means 6, display information designation data which is a combination of 2-bit data corresponding to the counters 21 and 22 in the latch circuit 27 and the Q output of the flip-flop block 23 is sent. (address data) and a display switching signal output from the OR gate 28 are transferred, and the display information data in the memory 7 corresponding to the specified data based on the operation of the key switch 17, 18 is read out.

The display information selection operation in the above configuration is achieved by selecting an information block using the Q output of the flip-flop 23 and selecting information data using 2-bit data from the latch circuit 27.

That is, when the Q output of the flip-flop 23 is 0, the 2-bit data of the counter 21 corresponding to the key switch 17 is selected, and when the Q output is eagle, the 2-bit data of the counter 22 corresponding to the key switch 18 is selected. Then, the information data in each information block is read out from the memory 7, and the display information on the display 11 is switched to the selected data by the display switching signal of the OR gate 28.

A drive voltage is supplied to each circuit by a power-on switch (not shown), and the display processing means 6 enters an initial state and executes display processing based on input data.

If the Q output of the flip-flop 23 is now stable, the display processing means 6 uses the L input to designate the information block corresponding to the key switch 17, and inputs the 2-bit data corresponding to the counter 21 from the latch circuit 27. The warning data at the corresponding address is read out from the reading memory 7 and displayed. Counters 21 and 22 each have a flip-flop 23
The counting function is configured to be actively controlled by the Q and δ outputs, and conditions are set so that it is active only when the L input is applied.

Therefore, the Q output increases, and when the Q output is H, the counter 21
becomes active, making it possible to count pulse input from the key switch 17, but since the counter 22 is kept inactive, the pulse input from the key switch 18 cannot be received.

Here, when the information in the information block corresponding to the key switch 17 is to be switched and displayed, the key switch 17 may be operated. That is, one pulse from the key switch 17 is counted and amplified by the counter 21, and the updated 2-bit data is transferred to the display processing means 6 through the latch circuit 27, new specified data is read from the memory 7, and the OR The display information on the display 11 is updated by the display switching signal from the gate 28.

Next, when attempting to display the information of the information block corresponding to the key switch 18, when the key switch 18 is operated, both the NAND gates 25 become H, and the output is inverted to L. Therefore, since the output of the AND gate 26 is also inverted to L, the flip-flop 23 inverts the Q and Q outputs and switches the counter 21 to inactive and the counter 22 to active. When the Q output is inverted to H, the selection of the information block in the display processing means 6 is switched to the side corresponding to the key switch 18, and the information data corresponding to the 2-bit data of the counter 22 is read out from the memory 7. At this time, the first pulse from the key switch 18 is before the counter 22 is actively inverted and is not counted up, and the previous count data is first transferred to the display processing means 6 and the corresponding information is displayed. Ru.

Therefore, when switching information blocks, the latest information that was previously displayed can be displayed first, and if the important information of each information block is operated as updated information,
By changing the key switch, it becomes possible to immediately change and display the desired information.

Note that the above embodiment is based on the key switch wamp 1. Although various pieces of information within the same information block are cyclically switched and displayed for each screen, it is also possible to automatically switch and display the information by providing a timer circuit or the like and keeping the key switch ON.

In addition, it is not necessary to divide all of the information to be displayed into the same system and provide a key switch for each information block. For example, it is possible to distinguish from specific information based on the degree of importance. By selecting and combining two or more of these, a configuration that simplifies the switch arrangement within the keyboard may be provided.

〔Effect of the invention〕

As described above, the present invention divides arbitrarily various types of information into blocks of information of the same system, provides a common key switch for each information block, and cyclically switches the information in the information block by operating the corresponding key. By configuring it to display, even if the amount of information increases, it is possible to perform simple operations without complicating the keyboard, and it is also possible to select and display information extremely easily.

[Brief explanation of drawings]

FIG. 1 is a circuit block diagram showing an embodiment of a display device for a vehicle according to the present invention, FIG. 2 is an explanatory external view showing an embodiment of a display device with a keyboard of the present invention, and FIG. 3 is a diagram similar to that shown in FIG. FIG. 3 is a circuit configuration diagram showing an example of a control means of the embodiment. 1: Sensor unit 6: Display processing means 7: Memory
8: Control means 9: Keyboard 10: Driver 11: Display
13-18: Key switch 1st m

Claims (1)

[Claims] a display device having a display processing means for inputting various vehicle information signals and selectively outputting display data; and a common display section for receiving the display data and selectively displaying display data corresponding to a plurality of pieces of information; , a vehicle display device comprising a keyboard having a selection key for selectively switching and displaying the plurality of pieces of information on the common display section, wherein arbitrary information of the plurality of pieces of information is divided into information blocks of the same system; At the same time, a selection switch corresponding to each information block is provided on the keyboard, and the display processing means is configured to cyclically switch and display each piece of information in the corresponding information block in accordance with the operation of the selection switch for each information block. A vehicle display device characterized by comprising a control means for issuing commands.