JPH01129674A - Sound volume setting circuit - Google Patents

Abstract

PURPOSE:To set the sound volume to an optimum state automatically at the power-on of a TV receiver by providing a memory written with a standard sound volume level therein in advance to be assumed optimum in response to the time zone. CONSTITUTION:When the power supply of a TV receiver is turned on, a power-on detection circuit 2 detects it and gives a detection signal to a control circuit 4. The control circuit 4, based on the output of a timer circuit 1, reads and outputs the sound level data of a corresponding time zone from the memory 3. Then operation keys 10a, 10b of sound volume UP or DOWN are operated, the correction in response to the adjustment is applied to the sound volume level data and the result is outputted. The adjusted sound volume level is given to an arithmetic circuit 5, which averages the sound volume level data and that of the memory 3 at the time band based on the output of the timer circuit 1 to form an updated data, thereby updating the sound volume level data of the memory 3.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a volume setting circuit that automatically sets the volume when, for example, a television receiver is turned on.

<Prior Art> In general, on a television receiver, the volume level is usually significantly different when viewing late at night and during the day. If you watch a TV broadcast, turn off the power, and then turn it on again late at night to watch the TV broadcast, the volume remains at the daytime volume level.
In the middle of the night, the volume level may be too high and cause noise, or conversely, if you turn on the power during the day,
The sound may be difficult to hear because it remains at the same volume level as late at night, and in such cases, the viewer has to adjust the volume, which is troublesome. In particular, the above-mentioned problem becomes noticeable in recent television receivers incorporating high-output audio circuits.

<Object of the Invention> The present invention has been made in view of the above-mentioned points, and it is possible to automatically set the volume to the optimum level for the hearing condition when the power of a television receiver, etc. is turned on. The purpose is to do so.

<Structure of the Invention> In order to achieve the above-mentioned object, in the present invention, standard volume level data considered to be optimal depending on the time period is written in advance in the memory, and when the power is turned on, the standard volume level data is written in advance. The volume level data corresponding to the time is read from the memory to control the volume, and when a volume adjustment operation is performed, the volume level data in the memory is corrected and updated accordingly.

<Example> Hereinafter, an example of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram of one embodiment of the present invention. This embodiment shows an example in which the present invention is applied to a television receiver.

This volume setting circuit A includes a timer circuit 1 for measuring time, a power-on detection circuit 2 for detecting power-on of a television receiver, and a volume level data corresponding to the time zone written in advance. The volume level output from the control circuit 4 is based on the volume level memory 3 to be updated, the control circuit 4 that controls the volume according to the data in the volume level memory 3 and the operation signal, and the output of the timer circuit 1. The apparatus includes an arithmetic circuit 5 that calculates update data from the data and the data of the volume level memory 3 to update the data of the memory 3.

The output of a timer circuit 1 that measures time is given to a control circuit 4 and an arithmetic circuit 5.

In the volume level memory 3, standard volume level data that is considered optimal for each time period, for example, morning, noon, night, and late at night, is written in advance by the manufacturer. This volume level data is sequentially rewritten with update data output from the arithmetic circuit 5, as will be described later.

=3- When the power of the television receiver is turned on, that is, when the detection signal from the power-on detection circuit 2 is given, the control circuit 4 performs the following based on the output of the timer circuit l:
The volume level data for the time period corresponding to that time is read out from the memory 3 and output, and when the volume up or down operation keys 10a, 10b are operated thereafter, the volume level data is modified in accordance with the adjustment operation. Additionally output.

That is, when the power is turned on, this control circuit 4 outputs the volume level data for the corresponding time period from the volume level memory 3, and when a volume adjustment operation is performed after the power is turned on, the control circuit 4 outputs the volume level data according to the adjustment operation. Output data.

Based on the output of the timer circuit I, the arithmetic circuit 5 calculates the volume level data outputted from the control circuit 4 and the volume level of the volume level memory 3 corresponding to the time period at predetermined time intervals, for example, every minute. The volume level data in the memory 3 is updated as update data by taking the average with the data.

= 5 - This is because the data pre-written in the volume level memory 3 is standard data set by the manufacturer, so it can be modified depending on the volume level actually used by the user to make it more suitable for the user. This is to obtain optimal volume level data.

In this embodiment, the control circuit 4 and the arithmetic circuit 5 are realized by a microcomputer.

The digital volume level data output from the control circuit 4 of the volume setting circuit A is given to the D/A converter 6 and converted into a DC control voltage, which amplifies the output of the audio detection circuit 7. The gain of amplifier 8 is controlled.

Note that 9 is a speaker.

Next, the operation of the volume setting circuit A having the above configuration will be explained.

First, when the power of the television receiver is turned on, the power-on detection circuit 2 detects it and sends a detection signal to the control circuit 4.
give to In response to this detection signal, the control circuit 4 reads the volume level data for the corresponding time period from the volume level memory 3 and supplies it to the D/A converter 6 based on the output of the timer circuit (2) at that time. As a result, the volume level is automatically adjusted to the optimal volume level written in the volume level memory 3. Since this volume level data is written for each time period, the optimal volume level is set accordingly during the daytime or late at night, for example.

Thereafter, when the volume level is adjusted by operating the operating gears 10a and 10b, the control circuit 4, as in the conventional case,
The corresponding volume level data is output to the D/A converter 6, and the volume level is adjusted.

This adjusted volume level data is also given to the arithmetic circuit 5, and this volume level data and the timer circuit 1
Based on the output, the average with the volume level data in the memory 3 for that time period is taken as update data, and the corresponding data in the memory 3 is rewritten to this update data. Thereby, the volume level data is updated to the optimum volume level data according to the user's actual usage.

In this way, when the television receiver is turned on, the volume level is automatically set to the optimum level corresponding to the time of day, so unlike the conventional system, when the power is turned on to watch TV broadcasts late at night, When the power is turned on, the volume remains at the daytime volume level, causing the volume to become too loud and noisy, or conversely, when the power is turned on during the day, the volume remains at the midnight volume level. Therefore, it is difficult to hear the voice.

Although the above-described embodiments have been described as being applied to a television receiver, the present invention is not limited to television receivers, but can be similarly applied to radio receivers, stereos, and the like.

<Effects of the Invention> As described above, according to the present invention, there is provided a timer circuit that measures time, a volume level memory in which volume level data according to a time zone is written in advance, and in which the written volume level data is updated. When the power is turned on, based on the output of the timer circuit, the volume level data for the time period corresponding to that time is read from the volume level memory and the volume level data is output, and there is also a volume adjustment operation. In some cases, a control circuit outputs volume level data modified in accordance with the adjustment operation, and the volume level data output from the control circuit and the volume level data written in the volume level memory based on the output of the timer circuit. and an arithmetic circuit that calculates update data based on the volume level data of the corresponding time period and updates the data in the volume level memory with the updated data, and controls the volume according to the volume level data from the control circuit. Therefore, when the power is turned on, the volume level is automatically set to the optimum level for the time of day.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention. A...Volume setting circuit, ■...Timer circuit, 3. Volume level memory, 4. Control circuit, 5. Arithmetic circuit.

Claims (1)

[Claims] (1) A timer circuit that measures time, a volume level memory in which volume level data according to the time zone is written in advance and the written volume level data is updated, and when the power is turned on, the output of the timer circuit is Based on the time, the volume level data for the time period corresponding to that time is read from the volume level memory and the volume level data is outputted, and when a volume adjustment operation is performed, the volume level data corresponding to the adjustment operation is outputted. and a control circuit that calculates update data based on the output of the timer circuit based on the volume level data output from the control circuit and the volume level data of the corresponding time period written in the volume level memory. A volume setting circuit comprising: an arithmetic circuit that updates data in the volume level memory with the updated data, and controls the volume in accordance with the volume level data from the control circuit.