JPH04315277A - Function selection information setting device - Google Patents

Abstract

PURPOSE:To exclude a hard part from the surface of a substrate by reading function selection information from a storing means at the time of initial activation and writing the set function selection information in the function selection information storage area of the storing means after the information is completely set. CONSTITUTION:A reading means 2 reads the function selection information corresponding to a function provided at an electronic equipment from a storing means 1 at the time of the initial activation and outputs the information to a setting control means 3. The setting control means 3 stores the function selection information inputted from the means 2 in a prescribed storage area 8. Based on the output of an information input means 5, the setting control means 3 sets the function selection information. During the setting of the function selection information, the information input means 5 can be operated while confirming the display of a display means 6. After the function selection information is completely set, a writing means 4 writes the set function selection information in the function selection information storage area of the storing means 1. Thus, the hard part (the matrix circuit of key inputs) can be excluded from the surface of the substrate.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a VTR (Video Tape Recorder) having a built-in central processing unit.
The present invention relates to a function selection information setting device configured to store function selection information provided in an electronic device such as r) and stored in a predetermined storage area by an initialization operation in a nonvolatile storage means.

0002

[Prior Art] A microcomputer (hereinafter referred to as a microcomputer) built into an electronic device includes a central processing unit, an R
OM (Read Only Memory) and RA
M (Random Access Memory) is provided, and the above ROM stores programs that execute the functions of the device, but the above programs will not be executed unless the initialization operation is performed at initial startup. It looks like this.

[0003] For this reason, when an electronic device such as a VTR that has a built-in microcomputer normally starts up,
Select the set jumper from among multiple pieces of function selection information (hereinafter referred to as jumpers) in the RAM (R) in the microcontroller.
An initialization operation is performed to store the data in the andom Access Memory.

[0004] The above jumper is used to control the functions (
For example, in a VTR, this information is used to select the index search function, etc.). Conventionally, in order to set the above jumpers, microcontrollers have installed a key input matrix circuit on the board that has multiple strobe signal output terminals and multiple jumper input terminals. Prepared above.

For example, as shown in FIG. 3, a key input matrix circuit 41 has two strobe signal output terminals 32 and 33 and four jumper input terminals 34 to 37.
In this case, it is possible to set a total of eight jumpers, from the function A jumper to the function H jumper.

For example, in a device having three functions, function A, function B, and function G, the strobe signal output terminal 32 and the jumper input terminal 34 are connected by a jumper diode 3.
8 to connect the function A jumper, and connect the strobe signal output terminal 32 and the jumper input terminal 35 to the function B jumper by connecting the strobe signal output terminal 32 and the jumper input terminal 35 by the jumper diode 39. Furthermore, the strobe signal output terminal 33 and the jumper input terminal 3
6 are connected by a jumper diode 40, and the function G jumper is set respectively.

As mentioned above, when the function A jumper, function B jumper, and function G jumper are set by the key input matrix circuit, the microcontroller
The following operations are performed according to the program stored in the .

That is, at startup, the microcomputer 31 first outputs a high-level strobe signal from the strobe signal output terminal 32 and a low-level strobe signal from the strobe signal output terminal 33, thereby switching the jumper input terminals 34 and 34. A high level signal is input from 35, and a low level signal is input from jumper input terminals 36 and 37. At this time, the microcomputer 31 stores the function A jumper and function B jumper in its built-in RAM.

Next, the microcomputer 31 outputs a low level strobe signal from the strobe signal output terminal 32 and a high level strobe signal from the strobe signal output terminal 33, thereby outputting a high level strobe signal from the jumper input terminal 36. In addition to inputting signals, low level signals are inputted from jumper input terminals 34, 35, and 37. At this time, the microcomputer 31 stores the function G jumper in its built-in RAM.

0010

[Problems to be Solved by the Invention] Today, microcomputers are used in equipment in various fields, and there is a demand for miniaturization of the equipment.

However, in the conventional configuration described above, jumper settings are performed on hardware, and the key input matrix circuit 41 for setting a predetermined jumper is controlled by the microcomputer 3.
Since the microcomputer 31 needs to be provided on one board, the board area of the microcomputer 31 becomes large, which is an obstacle to downsizing devices with a built-in microcomputer.

In particular, as the number of jumpers that can be set increases from 8 to 16, for example, the matrix circuit 4
1 has also tended to become larger, making it more difficult to downsize the equipment.

The present invention has been made in view of the above, and its purpose is to facilitate board management by removing the key input matrix circuit 41, which was conventionally necessary, from the board of the microcomputer 31, and to improve the performance of the equipment. An object of the present invention is to provide a function selection information setting device that can be downsized.

[0014]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the function selection information setting device of the present invention has an area for storing function selection information for selecting functions provided in an electronic device with a built-in central processing unit. a non-volatile storage means, for example a non-volatile RAM, and a reading means for reading function selection information from the storage means and outputting it to the setting control means;
A writing means for writing function selection information into the storage means, an information input means, for example a key input device, for outputting information for setting the function selection information to the setting control means, and a function selection information inputted from the reading means. a setting control means that stores the function selection information in a predetermined storage area and sets the function selection information based on the output of the information input means; and a fluorescent display tube, etc. that performs a display corresponding to the output of the information input means while setting the function selection information. The setting control means controls the reading means to read the function selection information from the storage means at the time of initial startup, and after the function selection information setting is completed, the setting control means controls the reading means to read the function selection information from the storage means after setting the function selection information. The present invention is characterized in that it is configured to control the writing means so as to write the set function selection information into the area storing the function selection information.

[0015]

[Operation] According to the above structure, since the storage means has an area for storing function selection information, it is possible to store function selection information corresponding to the functions provided in the electronic device in the storage means. Also, since the storage means mentioned above is non-volatile,
The function selection information stored in the storage means is retained even when power is not applied.

[0016] Here, the reading means is controlled by the setting control means at the time of initial startup, reads out the function selection information from the storage means, and outputs the read function selection information to the setting control means. Then, the setting control means stores the function selection information input from the reading means in a predetermined storage area. That is, the above operation is a so-called initialization operation at initial startup.

Furthermore, when the information input means is operated, the setting control means sets the function selection information based on the output of the information input means. Note that while the function selection information is being set, a display corresponding to the output of the information input means is displayed on a display means such as a fluorescent display tube, and the information input means can be operated while checking the display on the display means. After setting the function selection information, the writing means writes the set function selection information into the area of the storage means for storing the function selection information.

In this way, the function selection information is set on the software, and the set function selection information is stored in the non-volatile storage means and read from the storage means, so that the function selection information cannot be set using the conventional function selection information. The hardware part (key input matrix circuit) required for setting information can be removed from the board.

[0019]

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

The function selection information setting device of this embodiment is provided in a VTR as an electronic device incorporating a microcomputer (hereinafter referred to as microcomputer) 9, and as shown in FIG. Non-volatile RAM as
1, a reading device 2 as a reading device, a setting control device 3 as a setting control device, a writing device 4 as a writing device, a key input device 5 as an information input device, and a display device 6 as a display device. It is composed of.

The microcomputer 9 is a central processing unit (hereinafter referred to as C
(referred to as PU), a ROM that stores a program for operating the CPU, and a RAM 8 as a storage area. The reading device 2, setting control device 3, and writing device 4 described above are stored as programs in the ROM of the microcomputer 9.

[0022] The non-volatile RAM 1 is a non-volatile memory that is normally used to store tuning data corresponding to each position for tuning, and has an area for storing the tuning data. An area for storing a jumper is further formed in the section. The area for storing jumpers in the non-volatile RAM1 is as follows:
Jumpers corresponding to the functions provided by this VTR are stored. Since the non-volatile RAM 1 is a non-volatile memory, the jumper stored therein is retained even if the energization switch 7 is turned off and the energization is stopped.

The key input device 5 has a jumper selection key for selecting a predetermined jumper from among a plurality of pieces of function selection information (hereinafter referred to as jumpers). The above jumper is information for selecting a function that the device has (for example, an index search function for a VTR), and in this embodiment, 16 jumper selection keys are provided, so that 16 jumpers can be set. It has become. In addition to the jumper selection key, the key input device 5 has a setting key, a release key, a jumper setting start key, and a jumper setting end key. When these keys are operated, key data corresponding to the operated keys is output to the setting control device 3.

The setting control device 3 performs predetermined calculations based on key data from the key input device 5. That is, when the jumper setting start key of the key input device 5 is operated, the setting control device 3 puts the jumper setting mode in which the jumper can be set. Further, when the setting key or the cancel key is operated after the jumper selection key of the key input device 5 during the jumper setting mode, the setting control device 3 sets the jumper selected by the jumper selection key in the case of the setting key. If the release key is used, the setting of the selected jumper is canceled. Further, when the jumper setting end key of the key input device 5 is operated during the jumper setting mode, the setting control device 3 cancels the jumper setting mode and sends a jumper write signal to the writing device 4 to set the jumper setting during the jumper setting mode. output the write jumper and
The writing device 4 is controlled to write the newly set jumper into the area in the nonvolatile RAM 1 where the jumper before setting was stored.

The setting control device 3 also includes a key input device 5.
Based on the key data from , a display signal is output to a display device 6, which will be described later, and the display device 6 is controlled to perform a display corresponding to the operation key.

Further, when the setting control device 3 inputs an initial activation signal when the energization switch 7 is turned on and energization is started, it outputs a jumper read signal to the readout device 2 and stores the jumper in the nonvolatile RAM 1. The reading device 2 is controlled to read the jumper stored in the area where the jumper is stored. Further, when the setting control device 3 inputs the read jumper from the read device 2, the setting control device 3 immediately stores the jumper in the RAM 8 as a storage area built in the microcomputer 9.

When the readout device 2 receives a jumper readout signal from the setting control device 3, it reads the nonvolatile RAM.
1 is given a read command to read the jumper, and the read jumper is output to the setting control device 3.

The display device 6 is a fluorescent display tube provided in the operation display section on the surface of the main body of the VTR. Note that the display device 6 is not limited to a fluorescent display tube, and may be, for example, a liquid crystal display device.

The operation display section is provided with a display device 6 as well as operation buttons for operating the functions provided in the VTR.

[0030] Furthermore, the R built in the microcomputer 9
The OM stores programs that actually operate the functions provided in this VTR.

In the above configuration, the operation of the setting control device 3 at the time of initial startup will be explained below based on the flowchart shown in FIG.

First, the setting control device 3 turns on the energization switch 7.
When turned ON and energization is started, an initial activation signal is input (S1), and a jumper readout signal is output to the readout device 2 (S2). At this time, the reading device 2
When inputting a jumper read signal from the setting control device 3 , it gives a read command to the nonvolatile RAM 1 to read out the jumper, and outputs the read jumper to the setting control device 3 .

Next, the setting control device 3 controls the reading device 2
If the read jumper is input from (S3), the jumper is immediately stored in the RAM 8 built in the microcomputer 9 (S4).

With the above steps, the initialization operation at the time of initial startup is completed. Thereafter, when the user operates the operation button, the microcomputer 9 activates the function corresponding to the operation button according to the function activation program stored in the built-in ROM.

In addition, when setting and storing a jumper of a function provided in this VTR in the jumper storage area of the non-volatile RAM 1, an external writing device that can automatically write information to the non-volatile RAM 1 is required. There are two methods: a method of writing by external connection, and a method of writing by operating the key input device 5.

For example, when a jumper is first set and stored in the nonvolatile RAM 1 in a product manufacturing factory, if the external writing device described above is used for writing, the writing work can be done quickly and efficiently, resulting in excellent productivity. ing.

Furthermore, after the product is shipped from the manufacturing factory, for example, if the non-volatile RAM 1 breaks down and is replaced with a normal one, it becomes necessary to set a new jumper on the non-volatile RAM 1 and store it. Since writing can be performed by operating the key input device 5, there is no need for an external writing device, and writing can be done by setting jumpers anywhere, providing excellent serviceability.

The operation of the setting control device 3 when a jumper is set and stored in the nonvolatile RAM 1 by operating the key input device 5 will be described below based on the flowchart shown in the figure.

First, the setting control device 3 performs the operations S1 to S4 described above at the time of initial startup. after that,
When the jumper setting start key of the key input device 5 is operated by the operator (S5), the setting control device 3 sets the jumper setting mode and causes the display device 6 to display the jumper setting mode (S6). For example, the jumper setting mode indicator lamp is lit and the non-volatile RA
The symbol (or number) corresponding to the jumper read from M1 is displayed by lighting. By default, non-volatile R
Since no jumper is stored in AM1, only the jumper setting mode indicator lamp is lit.

Thereafter, when the jumper selection key of the key input device 5 is operated (S7), the setting control device 3 selects the jumper corresponding to the operated jumper selection key, and displays the selected jumper on the display device 6. A jumper is displayed (S8). For example, a symbol corresponding to the selected jumper is displayed blinking.

[0041] When the setting key is operated after the jumper selection key (S9), the setting control device 3
The jumper selected by the jumper selection key is set, and the display device 6 is caused to display that the jumper has been set (S10). For example, the display can be switched from a blinking display state to a lighting display state.

Further, when the release key is operated after the jumper selection key (S11), the setting control device 3
The setting of the jumper selected by the jumper selection key is canceled, and the display device 6 is caused to display that the setting of the jumper has been canceled (S12). For example, the display is turned off from a blinking display state. It should be noted that the operation using the release key described above is an operation performed when canceling the setting of a jumper when a setting error occurs, that is, a jumper corresponding to a function not provided with the present VTR is set.

After that, the process returns to S7 again, and the jumper selection key, setting key, and release key of the key input device 5 are operated by the operator in the same manner as described above, and all the jumpers corresponding to the functions provided in this VTR are set. After that, when the jumper setting end key of the key input device 5 is operated (S13)
, the setting control device 3 cancels the jumper setting mode and causes the display device 6 to erase the jumper setting mode display.
(S14). Furthermore, the setting control device 3 outputs the write jumper and jumper write signal set as described above to the write device 4 (S15). At this time, the reading device 2 writes the jumper set as described above into the jumper storage area of the nonvolatile RAM 1. Note that if the jumper was stored in the nonvolatile RAM 1 before setting, the newly set jumper is rewritten in the area in the nonvolatile RAM 1 where the jumper before setting was stored.

In this embodiment, the jumper is set on the software as described above, and the set jumper is transferred to the non-volatile RAM1.
It is stored in and read out. In contrast, in the past, jumper settings were performed on hardware, and it was necessary to provide a key input matrix circuit on the microcomputer board to set the jumpers. That is, in this embodiment, the matrix circuit that was conventionally necessary can be removed from the microcomputer board. Therefore, board management becomes easy and the device can be downsized.

In particular, in the past, as the number of jumpers that could be set increased from 8 to 16, for example, the matrix circuit also became larger, making it more difficult to downsize the device. However, in this embodiment, even if the number of jumpers that can be set increases, it does not affect the miniaturization of the device in any way.

Note that in this embodiment, the reading device 2
, the setting control device 3 and the writing device 4 are connected to a microcomputer 9.
For example, each of the above devices may be configured by an IC independently of the microcomputer 9.

Further, in this embodiment, the function selection information setting device is provided in a VTR as an electronic device, but the device is not limited to this, and for example, an electronic device with a built-in CPU such as a television or audio device. Be prepared for all types of equipment.

[0048]

Effects of the Invention As described above, the function selection information setting device of the present invention is a nonvolatile storage means in which an area for storing function selection information for selecting functions provided in an electronic device with a built-in central processing unit is formed. and reading means for reading function selection information from the storage means and outputting it to the setting control means;
writing means for writing function selection information into the storage means; information input means for outputting information for setting the function selection information to the setting control means; and function selection information input from the reading means into a predetermined storage area. a setting control means for storing function selection information based on the output of the information input means; and a display means for displaying a display corresponding to the output of the information input means while setting the function selection information; The setting control means controls the reading means to read the function selection information from the storage means at the time of initial startup, and after the setting of the function selection information is completed, the set function is stored in the area for storing the function selection information of the storage means. It is configured to control the writing means to write the selection information.

Therefore, the function selection information is set on software, and the set function selection information is stored in a nonvolatile storage means and read from the storage means. In contrast, in the past, function selection information was set on hardware, and it was necessary to provide a key input matrix circuit on the board for setting function selection information. In other words, the key input matrix circuit of the hardware part, which was conventionally required to set function selection information, can be removed from the board, making board management easier and making it possible to downsize electronic devices. play.

[Brief explanation of drawings]

FIG. 1 is a block diagram illustrating the configuration of a function selection information setting device, showing an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of a setting control device of the function selection information setting device.

FIG. 3 shows a conventional example, and is a circuit diagram showing a key input matrix circuit.

[Explanation of symbols]

1 Nonvolatile RAM (storage means) 2 Reading device (reading means) 3 Setting control device (setting control means) 4 Writing device (writing means)
5 Key input device (information input means) 6 Display device (display means) 8 RAM (storage area) 9 Microcomputer

Claims (1)

[Claims] 1. A non-volatile storage means in which an area for storing function selection information for selecting a function provided in an electronic device with a built-in central processing unit is formed, and a setting control means for reading out the function selection information from the storage means. a reading means for outputting function selection information to the storage means, a writing means for writing function selection information to the storage means, an information input means for outputting information for setting function selection information to the setting control means, and a function selection input from the reading means. While storing information in a predetermined storage area,
The setting control means includes a setting control means for setting function selection information based on the output of the information input means, and a display means for displaying a display corresponding to the output of the information input means while setting the function selection information, and the setting control means controls the reading means to read the function selection information from the storage means at the time of initial startup, and writes the set function selection information into the area for storing the function selection information of the storage means after setting the function selection information. 1. A function selection information setting device, characterized in that the device is configured to control a writing means in the following manner.