JPS6210917Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a timer device for controlling an audio system.

Generally, in a timer device, the controlled device does not operate normally immediately after being energized, so as disclosed in Japanese Patent Laid-Open No. 53-135254, the timer device is energized earlier than the set time by a preparatory period. A timer device that uses an audio device as a controlled device is introduced, for example, in the June 1978 issue of the magazine Transistor Technology, page 306, but because it tends to make pop noises when the power is turned on, it takes about 1 minute after the predetermined time. The timer device outputs a muting signal during the 1-minute early energization time when the speaker was previously energized, so that no sound is emitted from the speaker.

Recently, a timer device using a microcomputer has been developed, and it has become possible to control multiple audio devices such as tuners and tapes with a simple program. Even in such a programmable timer device, power is turned on early to prevent noise from the audio equipment when the power is turned on.
It is better to mutate, but if you try to use multiple devices in succession, there will be interruptions, which is not preferable. For example, if you are currently listening to a record on a record player and have programmed the tuner to operate at a set time, the tuner will be energized, say one minute before the set time, and at the same time a muting signal will be generated. The output from the record player is also cut off for one minute until the set time, and the sound cuts out even in the middle of a song.

Therefore, the present invention was devised in view of this point.
The present invention provides a timer device configured to stop generating a muting signal if another device is already energized before a set time.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing the control of an audio system by the timer device of the present invention. Reference numeral 1 indicates a program-type timer device, which energizes the tuner 2, tape deck 3, record player 4, and amplifier 5 at set times according to the program. Power supply signals P ₁ to _{P 4} are connected to each device in order to perform the operation, and control signals C ₁ to _{C 4} according to a program are transmitted to each device so that the devices are controlled according to the program.
The amplifier 5 is configured to receive the muting signal M and cut off the audio path to the speaker for a predetermined period before a set time.

Fig. 2 and Fig. 3 are diagrams showing the main parts of the muting signal generation circuit of the timer device of the present invention, and 6 is a storage means in which operation time data, function data, etc. are programmed, and is composed of a plurality of addresses. Multiple data can be programmed. A clock section 7 outputs time data to a display 8 to display the current time. Reference numeral 9 denotes a first coincidence detection circuit into which data obtained by adding one minute of time data from the clock section 7 by the addition circuit 10 and ON time data from the storage means 6 are input, and when both inputs match, a coincidence signal S ₁ is generated. occurs. This coincidence signal _S1 is generated one minute before the time set in the storage means 6, and acts to control the energization of the equipment. Reference numeral 11 denotes a second coincidence detection circuit into which the time data from the clock section 7 and the ON time data from the storage means 6 are input, which generates a coincidence signal _S2 at the set time, calls the preset station, starts recording, and moves the arm. It acts to generate pre-programmed control signals C ₁ -C ₄ for controlling instruments such as musical instruments. A third coincidence detection circuit 12 generates a coincidence signal _S3 by detecting the OFF time data from the storage means 6. Reference numerals 13, 14, and 15 designate flip-flops that generate control signals _P1 to _P3 for controlling power supply to the tuner 2, tape deck 3, and record player 4, including a coincidence signal _S1 based on ON time data from the storage means 6; It is set when the function data signals (TU, TA, PH) from the storage means 6 match, and a coincidence signal _S3 based on the OFF time data from the storage means 6 and the function data signals (TU, TA, PH) are set. It is configured to be reset when the PH) matches, and controls the power supply to the equipment. 16 is a muting signal generation circuit; 17
is a NOR gate into which the set outputs Q of flip-flops 13, 14, and 15 are input, and 18 is a NOR gate.
a delay circuit connected to the output of gate 17, 19;
20 is a one-shot multivibrator activated by the output of the coincidence signals S ₁ and S ₂ ; 21 is the delay circuit 18 and the one-shot multivibrator 1;
The output of the AND gate is connected to the set terminal S of the flip-flop 22. The reset terminal R of the flip-flop 22 is connected to the output of the one-shot multivibrator 20, and the set output Q acts as a muting signal M. Although not shown, the control flip-flops 13, 14, and 15 are constructed so that they can be arbitrarily set manually, and are constructed so that they can be arbitrarily energized to the device regardless of the program in the storage means 6.

Next, the operation of the present invention having such a configuration will be explained.

First, it is assumed that the current time is 8 o'clock, that the tuner 2 is programmed to operate at 9 o'clock in the storage means 6, and that no equipment is currently energized. Then, when time passes and it reaches 8:59, the adding circuit 10 adds one minute to the time data output of 8:59 from the clock section 7, and the first
The coincidence detection circuit 9 detects the coincidence of the set time data from the storage means 6 with 9 o'clock and generates a coincidence signal _S1 . 13 is set and the tuner 2 is energized. At this time, since power had not been applied to any of the devices before that, the NOR was activated as shown in Figure 4.
The output A of the gate 17 is changed from the "H" level to the "L" level, but since it is delayed by the action of the delay circuit 18, the output A of the gate 17 is matched with the output of the one-shot multivibrator 19 by the match signal _S1 at the AND gate 21. is detected, the flip-flop 22 is set, and the muting signal M is generated and guided to the amplifier 5, thereby cutting off the audio path to the speaker. Tuner 2 is energized one minute before the set time, and at the set time, the control signal is turned on.
A coincidence signal from the second coincidence detection circuit 11 along with C ₄
One shot multi vibrator 2 when S ₂ occurs
0 resets the flip-flop 22, thereby cutting off the muting signal M and reproducing the audio from the tuner 2. Thus, one minute before the set time, the tuner 2 is energized, muting is applied for one minute until the set time, and the muting is released at the set time, thereby setting the tuner to the operating state.

Next, it is assumed that the flip-flop 15 for the record player is manually set, and that the record player 15 and the amplifier 5 are currently energized to listen to a record. At this time, the output of the NOR gate 17 is maintained at the "L" level. Therefore, in this state 8
At 59 minutes, the tuner flip-flop 13 is set and the tuner 2 is energized by the generation of the coincidence signal _S1 in the same manner as described above.
Because the output of NOR gate 17 is “L” level
AND gate 21 is not opened and flip-flop 2
2 is never set and muting signal M is not generated. Therefore, the record can be listened to continuously. At the set time, in the same manner as described above, the function control signal _C4 to the amplifier 5 is generated in response to the generation of the coincidence signal _S2 , thereby switching the function from the record to the tuner and putting the tuner into the operating state.

As described above, the timer device of the present invention is configured to energize the audio equipment a predetermined time before the set time, and further determines whether or not any equipment is already energized before energizing. If not, a muting signal is generated from the time of energization until the set time, and audio output is cut off during that time. If energization has already been performed, the generation of the muting signal is stopped, and the mutating signal is stopped until the set time. This device enables the equipment to operate until the set time, and by turning on the power before the set time and generating a control signal at the set time, it prevents malfunctions when the power is turned on, and muting control prevents malfunctions when the power is turned on. It eliminates naturalness and is ideal for controlling audio systems.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a system using the timer device of the present invention, FIGS. 2 and 3 are diagrams showing the configuration of the main part of the timer device of the invention, and FIG. 4 is a diagram showing the main part of the timer device of the invention. FIG. 1... Timer device, 2... Tuner, 3...
...Tape deck, 4...Record player, 5
...Amplifier, 6...Storage means, 7...Clock part,
9, 11, 12...first, second, third coincidence detection circuits, 16 ...mutating signal generation circuit.

Claims (1)

[Scope of utility model registration request] A clock section, a storage means for storing set times for a plurality of audio devices, and a data based on the time data of the clock section and the set time data of the storage means are compared and a matching signal is outputted a predetermined time before the set time. a coincidence detection means; an energization control means for outputting energization control signals in correspondence with the output of the coincidence detection means to a plurality of audio devices; 1. A timer device comprising a muting signal generating means for generating a muting signal for a predetermined period of time after energization.