JPH0423323B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a signal switching device such as a stereo device.

Conventional configurations and problems There have been many signal switching devices for stereo equipment that have a playback system selection switch and an independent recording output selection switch, but all of them use mechanical switches, and the switch In addition to poor operability, it was not possible to switch between playback and recording at the same time. In addition, since the playback system and recording system are independent,
Twice as many operating units were also required.

Purpose of the Invention The present invention aims to eliminate the above-mentioned problems by providing individual input changeover switches corresponding to a plurality of audio or video input signals, one sound recording or recording mode switch, and means for displaying them, and providing playback output signals. The functions of simultaneously switching between and recording or recording signal, switching only the recording or recording signal while leaving the playback output signal unchanged, and switching only the playback output signal while leaving the recording or recording signal unchanged are achieved by simply operating the two types of switches mentioned above. The purpose is to display its status.

Structure of the Invention The signal switching device of the present invention includes a plurality of input terminals for inputting a plurality of audio or video signals, and a reproduction signal by selecting one of the audio or video signals input from the plurality of input terminals. a reproduction signal switching means for outputting to an output terminal; and a recording or recording signal switching means for selecting one of the audio or video signals inputted from the plurality of input terminals and outputting it to the recording or recording signal output terminal; an operation unit having an input signal selection switch that selects one of the plurality of input signals input to the plurality of input terminals; and a recording or recording mode designation switch that selects whether or not to set the recording mode; storage means for storing at least information as to whether or not the recording or recording mode was set by operating the recording or recording mode designation switch, and information as to whether or not the input signal selection switch was operated in the recording or recording mode; When the input signal selection switch is operated, according to the information stored in the storage means as to whether the recording or recording mode is set and the information as to whether the input signal selection switch is operated in the recording or recording mode. The state in which the recording or recording output signal and the playback output signal are switched at the same time, the state in which the playback output remains unchanged and only the recording or recording output signal is switched, and the state in which the recording or recording output signal remains unchanged and only the playback signal is switched. a state in which the recording or recording output signal and a playback output signal are simultaneously switched by the discrimination means, and a state in which the playback output remains unchanged; A display means is provided for displaying a determined state of either a state in which only the recording or recording output signal is switched, or a state in which only the playback signal is switched while the recording or recording output signal remains unchanged, and By pressing the input signal selection switch in accordance with information stored in the means as to whether the recording mode is set or not and information as to whether the input signal selection switch is operated in the recording or recording mode; Recording or recording output signal and playback output signal at the same time,
Alternatively, it is possible to switch only the recording or recording output signal while leaving the reproduction output unchanged, or to switch only the reproduction signal while leaving the recording or recording output signal unchanged.

DESCRIPTION OF THE EMBODIMENTS FIG. 1 is a block diagram showing an embodiment in which the signal switching device of the present invention is applied to a stereo device. 1
2 is an input terminal section of the signal switching device, and 2 is a recording output terminal. Note that the number of terminals in the input terminal section 1 and the recording output terminal 2 depends on the device and is not limited to the number shown in this figure. 3 is an electronic switch for selecting a signal;
3a is for selecting a reproduction signal, and 3b is for selecting a recording output. 4 is a muting means for temporarily muting the reproduced signal. 6 is a key matrix for creating information such as an input selection switch and a recording mode switch corresponding to an input; 7 is a storage means for storing information obtained from the key matrix 6 and the like. 8 compares and discriminates the information from the key matrix 6 and the information stored in the storage means 7, and controls the electronic switch 3, the muting means 4,
Alternatively, it is a determining means that sends a control signal to the display means 10 that displays the state. Further, reference numeral 9 denotes a power on/off discrimination means, which outputs a signal when the power is turned on or off, and performs certain control.

FIG. 2 is a block diagram showing the specific configuration of this embodiment. Reference numeral 11 denotes a microcomputer which, when a key in the key matrix 6 is pressed, has a read-only memory (ROM) 12 containing electronic switch data and display means data corresponding to the key, and information 15a from the key matrix 6. Random access memory (RAM) 1 that temporarily stores information such as terminals and currently connected terminals.
3 and the 4-bit information 15a of the key matrix received from the input section 15, collated the information with the stored contents of the ROM 12, performs certain calculations, and outputs a signal from the output section 16 to control the electronic switches 3a, 3b. 16a, and an arithmetic unit 14 for sending the information to RAM and display means 10 for displaying the current status. 17 is a display for displaying the output of the display means 10;
A display section corresponding to the input terminal section 1 for displaying the selected playback signal output, a display section corresponding to the recording or recording output for displaying the selected recording signal output, and a lighting state and a blinking state. Lights out 3
It consists of a recording or recording mode indicator with two states. Reference numeral 9 is configured to generate a positive logic pulse when the power is turned on and off, and when the power is turned on, the microcomputer 11 is activated by a positive logic reset pulse 15b and performs a predetermined initialization process.
Further, when the power is turned off, the power on/off discriminating means 9 outputs a positive logic pulse 15c, and the microcomputer enters a standby state after performing predetermined processing.

Figure 3 shows the microcomputer 11 of this embodiment.
This is a flowchart of the main parts for explaining the operation.

When the power switch is turned on, the microcomputer 11 is reset by the power on/off determination means 9, the program is started at step 21, it is determined whether initialization of 22 is necessary, and if necessary, the program proceeds to step 23. Data necessary for initialization is written to each assigned location in the RAM 13. When the initialization is completed, the process proceeds to step 24 for issuing the muting command 16b, but if initialization is not necessary, the process directly proceeds from step 22 to step 24. When the mutein ON command 16b is issued, the process moves to step 25, where the electronic switch control signal 16 is sent to turn on a predetermined electronic switch based on the data in the initialized RAM or the data in the original RAM.
A is issued and electronic switches 3a and 3b are set. When this is completed, the process proceeds to step 26, where muting is canceled and the audio signal is output. Next, in step 27, determine which signal this device is currently outputting.
A signal 16e is output to the display means 10 so as to make a display to inform the outside what state it is in. The steps up to this point are for resetting the device after the power is turned on, and the steps from step 28 onwards are the steps for subsequent commands from the outside. Step 28 monitors whether the device is powered off.
If the power is turned off, a standby signal 15c is received and the process proceeds to step 39. Here, all information about the current device is stored in the RAM, and in step 40 processing for standby is performed, and the process advances to step 41 to enter the standby status and wait until the power is turned on again. Also, if the power is not turned off, go to step 29.
Wait for information from key matrix 6. If there is no information, the process returns to step 28 to check whether it is on standby. The same process is performed thereafter, but when the information 15a from the key matrix 6 is inputted in step 29, calculations are performed based on that information in step 30 so that the key can be identified. Then, proceed to step 31, and check the information on that key and determine whether it is a recording mode key. If it is different, proceed to step 42, and determine whether or not the recording mode display is blinking. If it is not blinking, proceed to step 31. The program then proceeds to step 46, where it is determined whether or not the recording mode display is lit. If NO, the program proceeds to step 34, where data processing corresponding to the currently pressed key is performed for both the playback output and the recording output. If the key is the recording mode key in step 31, the program moves to step 32 and determines whether the recording mode display is flashing.If it is not flashing, the program moves to step 45, makes the recording mode display flash, and specifies only recording output. In step 28, the computer monitors whether the power is turned off or not, and then waits for a key input in step 29.

Also, if the recording mode display is blinking in step 32, there is no intention to specify recording output, so
Assuming that the recording mode key has been pressed twice, the recording mode is canceled in step 33, and the recording mode display is turned off. Next, the process advances to step 34, where the same data as the playback output is entered for the recording output, and data processing for both recording and playback power is performed. Also, if the recording mode display is blinking in step 42, the key you just pressed has the meaning of pressing the recording output, so step 4
The process proceeds to step 3, where data processing corresponding to only the recording output data is performed, and the process proceeds to step 44, where the recording mode display is turned on. Next, proceed to step 35.
Further, if the recording mode display is lit in step 46, the key just pressed is for specifying only the playback output, so the process proceeds to step 47, where data processing for only the playback output is performed, and the process proceeds to step 35. .

In step 34, data processing is performed on both the recording output and the playback output, and the process proceeds to step 35. Here, the muting signal 16 is sent to the muting means 4.
Issue b to mute the playback output. Next, in step 36, the electronic switch control signal 16a is outputted to control each or one of the electronic switches 3a and 3b, the muting is canceled in step 37, and the display means 10 is controlled in step 38. After issuing the signal 16e and notifying the user of the device status on the display 17, step 28
After returning, the same behavior occurs.

The above operation will be explained using an actual stereo amplifier operation. First, when you turn on the power, the state before turning off the power is Step 2 of the flowchart shown in Figure 3.
It is set from 1 to 27. Assume that the current state is that both the playback output and the recording output are in the tuner position, and the recording mode display means is off. If you want to change the playback output from tuner to phono, press the phono key and the key input is accepted in step 29. Since the key you pressed is not the record mode key, the process moves to step 42, where the recording mode display is changed. When it is determined that the light is off, the process proceeds from step 46 to step 34, and both the recording output and reproduction output signals are switched from the tuner to the phono. Next, next time when you want to use the tuner as the recording output only, press the recording mode key first, the recording mode key will be accepted, and step 31 → 32 → 4
5 and a series of operations causes the recording mode display to blink and wait for key input. So, when you press the tuner key next time, the key is accepted and step 29 → 3
It progresses in the order of 0 → 31 → 42 → 43, and only the recording output is switched from phono to tuner, and the playback output remains unchanged at phono. Moreover, here step 43
The recording mode display will be lit. Next, if you press the AUX key in this state, the MUX key will be accepted and steps 29→30→31→4
It works in the order of 2→46→47 so that only the reproduced output signal is switched. To return to the mode in which both recording output and playback output are switched at the same time, press the recording mode key, make the recording mode display blink, and then press the recording mode key again to perform the series of steps 31 → 32 → 33. The recording mode is canceled in step 34, and both recording output and playback output can be switched simultaneously in step 34. After that, pressing any other key will have the same effect.

Although the above embodiment discloses an application to a stereo device, it is equally possible to use it for switching audio and video signals in an audio and video system combined with a laser disk, television tuner, video deck, etc. is clear.

As described above, according to this embodiment, playback and
Simultaneous switching of recording output and independent switching of recording and playback outputs can be achieved with simple operation and extremely fast operation, and each status is accurately displayed to the user. Not only is it suitable, but it also greatly improves operability.

Effects of the Invention As described above, the signal switching device of the present invention has a plurality of input terminals into which a plurality of audio or video signals are input, and one of the audio or video signals input from the plurality of input terminals. a reproduction signal switching means that selects and outputs the reproduction signal to the reproduction signal output terminal; and a recording or video recording that selects one of the audio or video signals inputted from the plurality of input terminals and outputs it to the recording or recording signal output terminal. A signal switching means, an input signal selection switch for selecting one of the plurality of input signals inputted to the plurality of input terminals, and a recording or recording mode designation switch for selecting whether to set the recording mode to the recording mode. an operation unit having an operation unit, and at least stores information as to whether or not the recording or recording mode is set by operating the recording or recording mode designation switch, and information as to whether or not the input signal selection switch is operated in the recording or recording mode. a storage means for controlling the input signal selection switch; and information stored in the storage means as to whether or not the recording mode was set when the input signal selection switch was operated, and information as to whether or not the input signal selection switch was operated in the recording or recording mode. a state in which the recording or recording output signal and the playback output signal are simultaneously switched according to the information; and a state in which only the recording or recording output signal is switched while the playback output remains unchanged;
a determining means for determining which state is in which only the playback signal is switched while the sound recording or recording output signal remains unchanged, and switching and controlling the playback signal switching means and the sound recording or recording signal switching means; A state in which the recording output signal and the playback output signal are switched at the same time, and a state in which only the recording or recording output signal is switched while the playback output remains unchanged.
and a display means for displaying a state in which only the playback signal is switched while the recording or recording output signal remains unchanged, and the input switching is performed according to the storage state of the storage means. By pressing the switch, you can easily and quickly perform three operations: recording or switching both recording and playback output simultaneously, switching only recording or recording output, and switching only playback output, and each status is displayed. The present invention provides an excellent signal switching device that can perform the following functions and greatly improve operability.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an embodiment of the signal switching device of the present invention, FIG. 2 is a diagram showing a specific configuration, and FIG. 3 is a flowchart of main parts for explaining the operation. 1...Input terminal section, 2...Recording output terminal section, 3
...electronic switch, 4...mutating means,
6...Key matrix, 8...Discrimination means, 7...
Memory means.

Claims (1)

[Claims] 1. A plurality of input terminals into which a plurality of audio or video signals are input, and a reproduction signal switching means which selects one of the audio or video signals input from the plurality of input terminals and outputs it to a reproduction signal output terminal. , a recording or recording signal switching means for selecting one of the audio or video signals inputted from the plurality of input terminals and outputting it to the recording or recording signal output terminal; and a plurality of audio or video signals inputted to the plurality of input terminals. an operation unit having an input signal selection switch for selecting one of the input signals, and a recording or recording mode designation switch for selecting whether to set the recording or recording mode; and operation of the recording or recording mode designation switch. storage means for storing at least information as to whether or not a recording mode has been set, and information as to whether or not the input signal selection switch is operated in the recording or recording mode, and when the input signal selection switch is operated; A recording or recording output signal and a playback output according to the information stored in the storage means as to whether or not the recording mode is set and the information as to whether or not the input signal selection switch is operated in the recording or recording mode. The playback signal is determined by determining whether the signals are switched simultaneously, the playback output remains unchanged and only the recording or recording output signal is switched, or the sound or recording output signal remains unchanged and only the playback signal is switched. A determining means for switching and controlling the switching means and the recording or recording signal switching means, a state in which the determining means switches the recording or recording output signal and the playback output signal at the same time, and a state in which the playback output remains unchanged and only the recording or recording output signal is switched. 1. A signal switching device comprising: a display means for displaying a state in which only the playback signal is switched while the recording output signal remains unchanged;