JPH04130900A - Automatic volume balance adjustment device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides: - By operating a remote control unit in a device such as a television receiver or stereo device, the left and right distance between the operator and the device can be determined by The present invention relates to an automatic volume balance adjustment device that automatically adjusts the left and right volume balance of a device by determining it from the time difference between reception and emission of the device.

[Conventional technology]

Conventionally, in devices such as television receivers and stereo devices, the left and right volume balance has been adjusted using a remote control unit or a left and right balance adjustment volume on the main device side.

[Problem to be solved by the invention]

Therefore, adjustments had to be made several times in order to obtain an appropriate left-right balance. Furthermore, if a remote control unit is not available, viewers will have to go to the main unit to make adjustments, which is different from the actual viewing location, so viewers will have to make guesses and make adjustments, which may be repeated several times. was giving to

The present invention provides an automatic volume balance adjustment device that automatically adjusts the left-right volume balance of the device by operating a remote control unit to determine the left-right distance between the operator and the device based on the difference in light reception/emission time. The purpose is to

[Means to solve the problem]

In order to solve the above problems, the present invention provides a remote control unit including a first light receiving section and a first light emitting section that emits light by a signal from the first light receiving section or by manual operation; A light receiving/emitting section consisting of a second light receiving/emitting section and a third light receiving/emitting section each transmitting and receiving light to/from a remote control unit, and the second light receiving/emitting section or the third light receiving/emitting section. and calculates the time difference between the reception and emission time difference of the second reception and emission section and the reception and emission time difference of the third reception and emission section, taking into account the correction data, and generates a control signal corresponding to the time difference. The present invention provides an automatic volume balance adjustment device configured with an output control section.

[Function] A second light receiving/emitting section and a third light receiving/emitting section are provided on the front left and right ends of the main body side of the device, and a remote control unit is operated from where the viewer is located to control the second and third receiving and emitting sections. The third light receiving/emitting section emits light. The main body side that receives this light resets the counter and enters the time measurement start state, and the remote control unit emits light.

Upon receiving this light, the remote control unit side emits light again toward the main body side.The main body side calculates the time difference between this light reception and the previous light emission by correcting data for each of the second light receiving/emitting section and the third light receiving/emitting section. The microcomputer calculates the distance between the viewer and the left side of the main body and the distance from the right side of the main body. A triangle is specified from these two values and the distance between the second light receiving and emitting section and the third receiving and emitting section, which are determined from the structure, and therefore the position of the viewer is specified. A digital signal corresponding to the position is read from the memory. The signal is D/A converted and sent to the left/right balance control section of the audio circuit to optimize the left/right balance.

〔Example〕

Hereinafter, an automatic volume balance adjustment device according to the present invention will be explained based on the drawings. FIG. 1 is a block diagram of essential parts of an embodiment of an automatic volume balance adjustment device according to the present invention. In the figure, reference numeral 1 indicates a remote control unit (first light receiving/emitting section) that includes a first light emitting section 2 and a first light receiving section 3.
, 4 is a main device section, 5 is a second light receiving/emitting section consisting of a second light emitting section 6 and a second light receiving section 7, and 8 is consisting of a third light emitting section 9 and a third light receiving section 10. a third light receiving and emitting section, 11 is a second
A light receiving/emitting section consisting of a light receiving/emitting section 5 and a third light receiving/emitting section 8;
12 is a first switching circuit 13 and a second switching circuit 1
4, the control microcomputer 15, the time measurement counter 16, and the first
20 is a left-right balance control section.

Next, the operation of the present invention will be explained with reference to FIGS. 2 and 3. The viewer manually operates the remote control unit 1 from the current position to switch the main device section 4 from the first light emitting section 2.
Light is emitted from a second light receiving section 7 and a third light receiving section 10, which are provided separately on the left and right ends of the screen. The second light receiving section and the third light receiving section each convert the received optical signal into an electrical signal, and send one of the electrical signals to the control microcomputer 15 via the second switching circuit 14. The control microcomputer 15 uses the signal to reset the time measurement counter 16 [FIG. 2 (A)], to bring it into the time measurement start state, and to send it to the second light emitting section 6 via the first switching circuit 13 (FIG. 2 (A)). (b) Send out an arbitrary number of pulse signals (10 in this embodiment) shown in FIG. The second light emitting section 6 converts the signal into an optical signal and the first light emitting section 6 converts the signal into an optical signal.
emits light to the light receiving section 3. The first light receiving section 3 converts the light reception signal into an electrical signal and sends it to the first light emitting section 2. In response to the signal, the first light emitting section 2 again connects the second light receiving section 7 and the third light receiving section 7.
emits light to the light receiving section 10 of. The second light receiving section 7 converts the received light signal into an electric signal, and then sends the signal shown in FIG. ta(s) shown in c)
count. The microcomputer 15 calculates It4 and the number of pulses (1
0 pieces) Furthermore, the correction data of the first storage section is added to obtain the true delay time t. (S) [From the light emitted from the second light emitting part to the second
time until light is received by the light receiving unit]. This value means the distance between the remote control unit 1 and the second light receiving/emitting section 5 (for example, Ll in FIG. 4) in terms of the speed of light (300,000 km/s). Here, the reason why the light emission is an arbitrary number of pulses (10 in this example) is that only a single pulse is used, and if the t6° is directly counted, the distance to be measured is small compared to the speed of light, and the measurement error will be large. It is from.

In other words, the number of pulses is increased so that the time can be measured. In addition, since the measurement time is a minute value, the correction data in the first storage section cannot ignore the response delay time such as the rise time of the circuit elements used, so this time is determined in advance as the difference from the theoretical value and stored. It is. The microcomputer 15 then switches the first switching circuit 13 and the second switching circuit 14 from the second light receiving/emitting section side to the third light receiving/emitting section side, and through the same process as above, the distance is changed! Calculate Lz (Figure 4). On the other hand, since the distance all (Fig. 4) between the second receiving/emitting part and the third receiving/emitting part is a known value determined from the structure, a triangle with sides Ll, L2, and L is specified. The viewer's location is determined. Therefore, the microcomputer 15 calculates the difference distance between Ll and L2, including the sign (+-) (because if only the difference is used, the same value exists in two places on the left and right), and presets a balance control signal corresponding to the difference distance at each position. The required control voltage for the signal is read out from the second storage section 18, which is determined from actual measurements and written, and sent to the D/A converter section 19, where the digital signal is converted into an analog signal. The left/right balance control unit 20 sends out the right audio signal output and the left audio signal output, which are suitably balanced using the analog signal from the D/A converter 19, to the left and right audio amplifiers in the next stage.

〔Effect of the invention〕

As explained above, according to the present invention, the distance between the left and right sides of the main device from the operator's position can be adjusted by operating the remote control unit, instead of manually adjusting the left and right volume balance. A microcomputer calculates the time difference between light emission and light reception using It has a great technical effect of being able to read out and automatically adjust the left and right volume balance.

[Brief explanation of drawings]

Fig. 1 is a block diagram of the main parts of an embodiment of the automatic volume balance adjustment device according to the present invention, Fig. 2 is a diagram showing the time relationship between reset, light emission, and light reception, and Fig. 3 is a diagram showing the time relationship between the remote control unit and the main device. It is a figure showing an example of positional relationship. In the figure, 1 is a remote control unit (first light receiving/emitting section), 2 is a first light emitting section, 3 is a first light receiving section, 4 is a main unit, 5 is a second receiving/emitting section, and 6 is a first light receiving section. second light emitting section, 7
8 is a second light receiving section, 8 is a third light receiving and emitting section, 9 is a third light emitting section, 10 is a third light receiving section, 11 is a receiving and emitting section, 12 is a control section, 13 is a first switching circuit , 14 is a second switching circuit, 15 is a control microcomputer 15, 16 is a time measurement counter, 17 is a first storage section, 18 is a second storage section, 19
19 is a D/A converter; 20 is a left and right balance control unit; 21
22 is a left and right audio input signal, 23 is a right audio amplification section, and 24 is a left audio amplification section. Patent applicant: Fujitsu General Ltd.

Claims (1)

[Claims] A remote control unit includes a first light receiving section and a first light emitting section that emits light by a signal from the first light receiving section or by manual operation, and transmits and receives light between the remote control unit and the remote control unit. The second light receiving/emitting section and the third
The second light receiving/emitting section or the third light receiving/emitting section is switched, and the difference in reception/emission time of the second light receiving/emitting section and the third light receiving/emitting section are switched. A control unit that calculates based on the time difference between the reception and light emission time difference of the light emitting unit and correction data consisting of the difference between the theoretical value and the actual value as at least the response delay time of the circuit element, and outputs a control signal corresponding to the time difference. An automatic volume balance adjustment device comprising: