JPS60233922A - Switch device - Google Patents

Abstract

PURPOSE:To operate lots of station numbers with a few operating switches by giving more than two significances to one TV channel selection switch. CONSTITUTION:A tuning voltage generating circuit 10 gives a tuning voltage to an electronic tuner 1. A storage circuit 12 stores the tuning voltage. A keyboard means 13B designates an address of the storage circuit 12. A microcomputer 11 receives an address command from the keyboard means 13B, decodes it, reads a tuning voltage value from the corresponding address of the storage circuit 12, transmits it to a tuning voltage generating circuit 10, a tuning voltage is given to an electronic tuner 1 through the said tuning voltage generating circuit 10 so as to attain a series of key input discriminating jobs receiving a required channel, a storage circuit control job and a tuning voltage control job. Then two ways of significances are given to one switch depending on the time length of the conductive time of the keyboard means 13B, the microcomputer 11 discriminates the difference so as to change the operation of the jobs.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a switch device for a color television receiver or a VTR device.

Conventional Structure and Problems Therein FIG. 1 shows a block diagram of a color television receiver. In Fig. 1, 1 is a tuner, 2 is an intermediate frequency amplification circuit, 3 is a detection circuit, 4 is a video amplification circuit, 6 is a cathode ray tube,
6 is an audio intermediate frequency amplification circuit, 7 is an audio detection circuit, 8 is an audio amplification circuit, 9 is a speaker, 1o is a tuning voltage generation circuit,
Reference numeral 11 designates a microcomputer means for performing key manual discrimination work, memory circuit control work, and tuning voltage control work; 12 a memory circuit for storing the tuning voltage; and 13 a keyboard means discriminated by the microcomputer means 11.

Next, the operation will be explained. The keyboard means 13A has a one-to-one correspondence with each address of the memory circuit 12, for example, 16
In the case of a television receiver of the station preset system, there are 16 switches as shown in FIG. 2, for example. Now, suppose that you press the ■ button in Figure 2. Then, the microcomputer means 11 senses that the switch (■) has been pressed, reads out the content of the address corresponding to the switch (2) in the memory circuit 12, and then generates a tuning voltage in order to generate a tuning voltage corresponding to this content. The circuit 10 is controlled. By doing so, the tuner 1 receives the channel corresponding to the content written in advance in the address corresponding to the switch (■) of the memory circuit 12, an image is projected from the cathode ray tube 5, and audio is output from the speaker 9. come. This method requires as many switches as the number of stations that can be preset, making it difficult to use when there are many stations.

The next idea we came up with was the switch shown in Figure 3.

The block diagram is the same as in FIG. 1, but the functions of the switches are different. In FIG. 3, there are switches labeled O to ■, the so-called numeric keypad, and switches labeled (E) and C). Addresses from 0 to 29 can be specified with these switches. For example, if the address is 10 o'clock, just press the switch ■. When the address is 110, press the switch (9) and then press the switch ■.When the address is 29,
After pressing the switch (), press the switch ■.

If you use this method, you will have 12 addresses for 29 stations117),
It can be accessed with a single touch. However, even with this method, when the number of stations increases to 99, the number of switches becomes 19, making it difficult to operate. The above explanation is an example in which when the number of stations increases, the number of switches for operation increases, making it difficult to operate, but since the microcomputer has many functions other than the switch for selecting stations, new switches are installed. There are times when you have to. An example of this will be explained with reference to FIGS. 4 and 6. FIG. 4 shows the block diagram of FIG. 1 with 14 additional elements other than the changeover switch. Bidet 1 to bidet 4 in FIG. 4 are input terminals for video signals, respectively. Although not shown in FIG. 4, it goes without saying that the audio signal is also switched at the same time. This changeover switch circuit 14 is controlled by microcomputer means 11. Note that the changeover switch circuit 14 in this figure is in a state where it can receive a television signal. An example of the keyboard means 13A in this block diagram is shown in FIG. In FIG. 6, ``■'' to ``■'' are address switches for selecting stations, and in this case, there are 8 stations. (gJffj3) The switch e is a command switch for operating the changeover switch circuit 14.

For example, when the switch C(2) is pressed, the changeover switch circuit 14 shown in FIG. 4 is connected to the input terminal of the video 1, and receives the video signal connected to the video 1. As the functions of the microcomputer means 11 become more and more improved and become busy controlling various circuits, the number of switches on the keyboard means 13A increases rapidly and becomes difficult to operate. was.

OBJECTS OF THE INVENTION The present invention eliminates the above-mentioned drawbacks and replaces the channel selection switch, which is always provided as a keyboard means of a television set, with one switch.
To provide a switch device with good operability by allowing one switch to have two or more meanings, allowing a large number of stations to be operated with a small operating switch, or controlling functions other than channel selection. With the goal.

Structure of the Invention The present invention comprises a tuning voltage generation circuit that applies a tuning voltage to an electronic tuner, a memory circuit that stores the tuning voltage value of this tuning voltage generation circuit, a keyboard means that specifies an address of this memory circuit, and this keypad. - receiving an address command from board means, decoding it, reading out the tuning voltage from the corresponding address in the storage circuit and transmitting it to the tuning voltage generation circuit, and applying the tuning voltage to the electronic tuner through the tuning voltage generation circuit; A microcomputer means is provided for manually identifying a series of keys for receiving a necessary channel, controlling a memory circuit, and controlling a tuning voltage, and determines the meaning of two series for one switch depending on the length of conduction time of the keyboard means. The microcomputer means determines whether the conduction time is long or short, and when the conduction time is short, it performs the work B, and when the conduction time is long, it performs the work B, and then further performs work B. Moreover, many functions can be controlled with a small number of operation switches.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. A block diagram is shown in FIG. The difference from FIG. 1 is the keyboard means 13B, and the keyboard means 13B of FIG. 6 has fewer switches than the keyboard means 13B of FIG. 1. FIG. 7 shows the keyboard means 13
This is an example of B. FIG. 8 shows the key determination part of the operation flowchart of the microcomputer means 11.

Among the switches in FIG. 7, all the switches other than O have two display types. This shows that there are two consecutive meanings depending on how the switch is pressed.

For example, when pressing the ■ switch, if you press it and immediately release it, it will perform the operation of address 1. That is, the contents of address 1 of the memory circuit 12 are read out and the corresponding channel is received. Also, if you press and hold the switch ■ for a while, it will first perform the operation of address 1, and then after a while it will perform the operation of 1-.Eo Here, 1-
The operation means a command for the 10th digit of addresses 10-19.

Further, the operation 2- refers to a command for the 10th digit of addresses 20 to 29. That is, the 10 switch groups shown in FIG. 7 can specify the addresses of 100 stations from 0 to 99.

Microcomputer user means 1 for performing the above operations
The operation flowchart of No. 1 is shown in FIG. 8, and the operation will be explained next. In FIG. 8, the microcomputer means 11 normally runs through the main routine (step 50). If any of the switches shown in Figure 7 is pressed (step 51), the determination routine shown in Figure 8 is executed (
Step 62).

In the determination routine, it is determined which switch has been pressed (step 53), and if any one of the switches numbered 0 to 9 has been pressed, the routine for job 1 is executed (step 54).

Here, the number from 0 to 9 is assigned to the number corresponding to the pressed switch. For example, if the number ■ switch is pressed, the operation for address 1 will be performed, and
(step 65). Next, it is checked whether this switch is held down (step 66), and if it is left, it returns to the main routine, and if it is held down, it goes down, and continues in a loop until 3 seconds have elapsed (
Step 57). Here, we have temporarily set the time to 3 seconds, but this time may be changed. Next, if the 3 sand pick up button is pressed continuously, it will proceed to the job 2 below (step 6B).

Here, if the number is ◎, no work is done, but if it is any other number, work corresponding to 1- to 9- is done (step 69). For example, when you have the number ■, you do the work of 1-. Then return to the main routine. In this way, one switch can be used in two ways depending on how it is pressed, so many addresses can be accessed with a small number of switches.

FIGS. 9 and 10 show key discrimination in the operation flowcharts of the keyboard means 13B and the microcomputer means 11 in other embodiments, respectively.

Of the switches in FIG. 9, all of the switches (■) to (■) have a double series display. This shows that there are two consecutive meanings depending on how the switch is pressed.

This is the same as described in the embodiments of FIGS. 6 and 7. The difference is that if you hold down the button for a long time,
In the previous explanation, for example, if you press the ■ switch for a long time, 1-
This time, if you hold down the ■ switch for a long time, the operation shown in Video 1 will occur. The operation of video 1 referred to here means that, as shown in FIG. 11, the changeover switch circuit 14 is connected to the input terminal of video 1, and the input terminal of video 1 is in a state where it can receive a video signal. be. The same can be said about the switches ■～■. The functions of the switches ■ to ■ do not change depending on how they are pressed, and they operate at addresses 5 to 8, respectively.

At this time, of course, the changeover switch circuit 14 is in a state of receiving television signals. A flowchart of the microcomputer means 11 for carrying out the above operations is shown in FIG. Figure 10 is almost the same as Figure 8, but since there are only 8 switches, the numbers are from ■ to ■ in the discrimination routine and work 2 routine (steps 61°-62), and the work 2, which was the work of the OSD in FIG. 8, has been changed to the work of bidets 1 to 4 in FIG. 10 (step 63).

Effects of the Invention As described above, in the present invention, one switch has two meanings depending on the conduction time of a group of switches connected to a microcomputer means, and when the conduction time is short, it performs the first job, and An easy-to-operate switch device that controls many functions with fewer switches by incorporating microcomputer software to perform a second task in addition to the first task when the time is long. This is something that can be provided.

[Brief explanation of the drawing]

Figure 1 is a block diagram of a conventional television receiver, Figure 2 is a diagram showing the arrangement of the tuning switches of the keyboard means in Figure 1, and Figure 3 is a conventional keyboard with a reduced number of tuning switches. FIG. 4 is a block diagram of another conventional television receiver;
6 is a diagram showing the configuration of the keyboard means used in FIG. 4'; FIG. 6 is a block diagram of a television receiver equipped with a switch device according to an embodiment of the present invention;
FIG. 8 is a flowchart for explaining the operation of FIG. 6; FIG. 9 is a diagram showing the configuration of the keyboard means according to another embodiment of the present invention;
FIG. 10 is a flowchart for explaining the operation in the case of FIG. 9, and FIG. 11 is a block diagram of a television receiver having the keyboard means of FIG. 9. 1... Tuner, 10... Tuning voltage generation circuit, 11... Microcomputer means,
12... Memory circuit, 13B... Keyboard means. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 7
Figure 10

Claims (4)

[Claims] (1) A tuning voltage generation circuit that applies a tuning voltage to an electronic tuner, a memory circuit that stores the tuning voltage value of the tuning voltage generation circuit, a keyboard means for specifying an address of the memory circuit, and an address from the keyboard means. receives the command, decodes it, reads out the tuning voltage value from the corresponding address in the storage circuit, transmits it to the tuning voltage generation circuit, applies tuning voltage to the electronic tuner through the tuning voltage generation circuit, and sets the tuning voltage to the required channel. A microcomputer means is provided for performing a series of manual key recognition operations, a memory circuit control operation, and a tuning voltage control operation, and a single switch has two meanings depending on the length of conduction time of the keyboard means. , said microcomputer means:
This switch device is characterized in that it determines the length of the conduction time with the conduction time, and performs the first work when the conduction time is short, and performs the first work when the conduction time is long, and then performs the second work. (2) The first job is a job for address numbers 0 to 9 below 9, and the second job is a job for numbers 1 to 9 in the 10th digit of address numbers 10 to 99. A switch device according to claim 1. (3) A switching means is provided for selectively switching among a plurality of signal systems controlled by a microcomputer means, wherein the first job is a job for address numbers 0 to 9 of 9 or less, and the second job is a job for the plurality of address numbers 9 or less. 2. The switching device according to claim 1, wherein the operation is to selectively switch the transmission system. (4) The switch device according to claim 3, wherein the plurality of signal systems are video input terminals.