JPH0410876A - Television image receiver - Google Patents

Abstract

PURPOSE:To attain appropriate sound volume setting at the time of turning on power source by making the control value of a gain which is the output of a gain control quantity detecting means to detect the value of a gain control quantity when unit time is elapsed stored in a nonvolatile memory by time. CONSTITUTION:The gain control quantity value of every on hour like after one hour elapses from 0 o'clock and after one hour elapsed from one o'clock is sampled in a gain control quantity detecting means 40 by the output of a present time calculating means 30 to calculate present time from an oscillator for clock and is stored in the address of the applying time of a nonvolatile memory 60 by a storing control means 50. Next, when a power source is turned off and is turned on again, the data of the address applying to the time nearest to the recharging time are read by an initializing means 70 from the nonvolatile memory 60 and are made as the initial value of a sound volume control means 20. Thus, appropriate volume setting at power source charging is attained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a television receiver having a function of changing the initial setting value of the volume depending on the time when the power is turned on.

BACKGROUND OF THE INVENTION In recent years, with the spread of remote controls, television receivers have become mainstream with nonvolatile memory that stores values set by the user and, when the power is turned on, reproduces the state in which the power was last turned off.

This will be explained below using the drawings. FIG. 2 shows a block diagram of a conventional television receiver.

In FIG. 2, IO is an amplifier that amplifies the audio signal and transmits it to the speaker or earphone terminal, and 15 is an operation detection unit that detects the keys or remote control provided on the main body and transmits the user's volume up or down instruction to the volume control means 20. It is. The volume control means 20 controls the gain of the amplifier 10 according to instructions to increase or decrease the volume, and at the same time stores the gain control amount in the nonvolatile memory 60. 8
0 is a power supply detection means that detects that the power has been turned on, and 70 is a power supply detection means that reads out the gain control amount stored in the nonvolatile memory 60 when the output of the power supply detection means 80 is made, and sets the initial value of the volume. This is initial setting means for setting the volume control means 20 as follows.

The operation of the conventional television receiver configured as described above will be explained. The operation detection section 15, the volume control means 20, the power supply detection means 80, and the initial setting means 70 are realized by a microcomputer. The microcomputer mentioned here is CPU.

It is a so-called single-chip computer that has ROM, RAM, D/A converter, and input/output.

First, when the power is on, the gain of the audio signal amplifier 10 is changed through the D/A converter in accordance with a user's instruction to increase or decrease the volume. Also, store the value in the nonvolatile memory IJ-60. When the power is turned off and then turned on again, the value of the D/A converter immediately before the power was turned off is read from the nonvolatile memory 60 and used as the initial value. By doing this, you can reproduce the volume state before the power was turned off.

Problems to be Solved by the Invention In general usage, the volume of a television receiver is usually changed during the day when there is a lot of ambient noise and late at night when there is less noise. Only the final volume when the power is turned off is memorized, so if you turn off the power late at night and turn it on again during the day, or vice versa,
When the power is turned off and then turned on again late at night, the user has to immediately reset the appropriate volume.

In view of the above problems, the present invention provides a television receiver that sets an appropriate volume when turning on ilt'a again.

Means for Solving the Problems In order to solve the above problems, the television receiver of the present invention includes a time calculation means for calculating the current time, and a gain control amount detection means for detecting the value of the gain control amount when a unit time elapses. storage control means for storing the gain control value, which is the output of the gain control amount detection means, in a nonvolatile memory at each time determined by the time calculation means; #An initial setting means is provided for reading a gain control amount corresponding to the power-on time from the nonvolatile memory using the output of the detection means and the time calculation means and initializing it in the volume control means.

Effect of the present invention With the above-described configuration, the user's daily volume settings are stored in a nonvolatile memory by time, and the tur
When the power is turned on again, an appropriate sound volume can be set by reading out the volume setting value from the non-volatile memory according to the time of re-turning on.

EXAMPLES Hereinafter, examples of the present invention will be described with reference to the drawings. 1st
The figure shows a block diagram of a television receiver in an embodiment of the present invention. In FIG. 1, 10 is an amplifier that amplifies the audio signal 1 and transmits it to the speaker or earphone terminal 2, and 15 is an operation that detects the keys or remote control provided on the main body and transmits the user's volume up or down instruction to the volume control means 20. This is the detection section. The volume control means 20 controls the gain of the amplifier 10 according to instructions to perform volume amplification or down operation. 30 is a time calculation means equipped with an oscillator bank-amplified by a battery or a capacitor, and 40 is the output of the time calculation means 30. This is a gain control amount detection peak means for detecting a gain control value every hour. Reference numeral 50 denotes a storage control means for storing the values obtained from the output of the time calculation means 30 in the nonvolatile memory 60 by time. Reference numeral 80 denotes an N source detection means for detecting that the power has been turned on, and 70 indicates a gain control amount at the time corresponding to the output of the time calculation means 30 when the output of the power supply detection means 80 is made from the nonvolatile memory 60. This is an initial setting means that reads out the value and sets it in the volume control means 20 as an initial value of the volume.

The operation of the television receiver configured as described above will be explained below with reference to FIG.

In FIG. 1, operation detection means 15, gain control amount detection means 40, volume control means 20, time calculation means 30, memory control means 50, initial setting means 70. @source detection means 80
is realized by a microcomputer. The microcomputer mentioned here is CPU, ROM, RA
It is a so-called single-chip computer with an M5D/A converter, input/output, clock oscillator, and battery backup function.

First, when the power is on, the operation detection means 15 detects an instruction from the user to increase or decrease the volume, and in accordance with this, the volume control means 20 controls the gain of the audio signal to the amplifier 10 through the D/A converter. change. In addition, based on the output of the current time calculation means 30 that calculates the current time from a clock oscillator, the gain control amount detection means 40 detects that 1 hour has elapsed since 0 o'clock.
The gain control amount value is sampled every hour, such as after one hour has passed, and is stored at the address of the corresponding time in the nonvolatile memory 60 by the storage control means 50. The nonvolatile memory 60 has addresses for 24 hours, that is, stores 24 pieces of data.

Next time the power is turned off and turned on again, the initial setting means 70
By reading the data of the corresponding address at the time closest to the re-powering time from the non-volatile memory 60 and setting it as the initial value of the volume control means 20, it is possible to set the volume appropriately when the power is turned on.

Effects of the Invention As described above, the present invention provides a time calculation means for calculating the current time, a gain control amount detection means for detecting the value of the gain control amount over a unit time, and an output of the gain control amount detection means. storage control means for storing a gain control value corresponding to the power-on time in a nonvolatile memory at the time determined by the time calculation means; By providing initial setting means for reading data from the non-volatile memory and initializing the sound volume control means, it is possible to set the sound volume appropriately when the i-power source is turned on.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a television receiver according to an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional television receiver.

Claims (1)

[Claims] An audio signal amplifier, an operation detection means for detecting an operation by a button provided on the main body or a remote control, or both, and a gain of the amplifier based on a volume increase/lower command detected by the operation detection means. a volume control means for controlling the volume by changing the volume, a time calculation means for calculating the current time from a reference clock, a non-volatile memory, and a gain control amount detection means for detecting the value of the gain control amount when a unit of time elapses. storage control means for storing the gain control value, which is the output of the gain control amount detection means, in the nonvolatile memory at each time determined by the time calculation means; and a power supply for detecting that the main body power is turned on. It is characterized by comprising: a detection means; and an initial setting means for reading a gain control amount corresponding to the power-on time from the non-volatile memory using the output of the power supply detection means and the time calculation means and initializing it in the volume control means. television receiver.