JPH04234273A - Color television receiver - Google Patents

Abstract

PURPOSE:To release a clerk from a trouble such as confirmation and re-adjustment at every constant time, etc., by checking set values for video and sound at present at every constant time by using a microcomputer for control, and performing processing to return the value to a designated value when it differs from the designated value. CONSTITUTION:The microcomputer 5 for control checks the output of a control signal to a luminance signal processing circuit 6, a color signal processing circuit 8, and an audio signal processing circuit 10 controlled by itself when receiving a specific signal issued from a transmitter 1 or an operating part 4. Such check is performed at every interval of constant time. When the result of check differs from the designated value decided in advance, the processing to immediately return the value to the designated value is executed on the circuits 6, 8.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention automatically resets video conditions such as brightness and contrast, and audio conditions such as bass and treble in a color television receiver to a predetermined constant state when a specific operation is performed. Regarding a color television receiver.

0002

2. Description of the Related Art When displaying a color television receiver in a store, it is necessary to always set the image quality, sound quality, etc. to the optimum state in order to sufficiently impress the purchasers with the quality and performance of the color television receiver. Additionally, sales floors are generally bright and spacious, and many products are displayed in stacks, so they are easily affected by lighting. Therefore, at the in-store display stage, it is necessary to set the video and audio to match the store environment, such as by emphasizing brightness, contrast, and bass. Conventionally, when adjusting video conditions such as brightness and contrast, and audio conditions such as bass and treble to appropriate conditions on a color television receiver, in order to relieve the user from the hassle, a so-called "standard state" has been created using a one-touch operation. Many of the devices were equipped with settings functions. The "standard condition" here refers to the factory-preset image, sound quality, etc. that most people are satisfied with. For in-store display, this "standard state" setting function is used, or if this function is insufficient, normal operations are used to set it to the optimal state for in-store effectiveness.

0003

[Problem to be Solved by the Invention] However, at the sales floor, customers naturally manipulate the products in various ways. As a result, the originally set video state etc. will change, and it will be necessary to reset the state again. This work is troublesome for store clerks and other people who manage products. In view of such drawbacks, the present invention provides a function to restore the original optimal state after a certain period of time by performing a specific operation in advance, even if the video and audio have changed from the optimal state due to the operation of the purchaser, etc. The purpose of the present invention is to provide a color television receiver equipped with the following functions.

0004

[Means for Solving the Problems] The present invention uses a transmitter to control a brightness signal processing circuit, a color signal processing circuit, and an audio signal processing circuit of a color television receiver through a control microcomputer by remote control operation or the like. A transmitter capable of emitting a specific optical signal different from the optical signal in addition to the optical signal emitted when performing normal image adjustment or audio adjustment when performing video adjustment and audio adjustment. , a light receiving section that receives the optical signal from the transmitter, converts it into an electrical signal, and outputs the signal to the control microcomputer; A control microcomputer that also performs control processing to output a fixed control signal to a luminance signal processing circuit, a color signal processing circuit, and an audio signal processing circuit at fixed time intervals when a specific optical signal is received. The present invention provides a color television receiver having the following configuration.

[0005]

[Operation] Operate the operating section of the transmitter or color television receiver body to issue a specific signal and instruct the control microcomputer. According to this instruction, the control microcomputer uses the timer function of the microcomputer to check the current video and audio related settings at fixed intervals (for example, 10 minutes), and if the values are different from the specified values (optimal state at the store). If so, it executes processing to return to the designated value and controls the luminance signal processing circuit, color signal processing circuit, and audio signal processing circuit. On the other hand, if the result of the above check is the same as the designated value, the designated value is retained.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A color television receiver according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of essential parts of an embodiment of a color television receiver according to the present invention. In the figure, 1 is a transmitter that emits an optical signal for remote control operation, 2 is the main body of the color TV receiver, and 3
1 is a light receiving section that receives the optical signal from the transmitter 1 and converts it into an electrical signal; 4 is an operating section provided in the main body of the color television receiver for performing various operations; 5 is a luminance signal according to the signal from the light receiving section 3 or the operating section 4. Processing circuit 6 and color signal processing circuit 8
A control microcomputer 6 that controls the audio signal processing circuit 10 outputs the luminance signal from the luminance signal input terminal 7 to a cathode ray tube (CRT) 12 as a signal at a predetermined level based on the control signal from the control microcomputer 5. A brightness signal processing circuit 8 outputs a color signal from a color signal input terminal 9 to a CRT as a signal at a predetermined level based on a control signal from the control microcomputer 5; 10 a color signal processing circuit which outputs a color signal from a color signal input terminal 9 to a CRT; This is an audio signal processing circuit that outputs an audio signal to a speaker as a predetermined signal based on a control signal from the control microcomputer 5.

Next, the functional operation of the control microcomputer 5 will be mainly explained. The following functions of the control microcomputer 5 are processed by software in advance. Although there is a method of making the specific signal emitted from the transmitter 1 or the operation unit 4 a separate and independent signal, in this embodiment, it is an optical signal or an electrical signal emitted by normal key operations (brightness, volume, and other general operations). is used in special situations. For example, when a color TV receiver with built-in BS is in channel preset mode (channel setting mode that determines which broadcast channel is set to which channel position) and the TV/independent audio switch key is held down for 5 seconds, the signal is emitted. It is used for this specific signal. Here, the reason why the key is held down for 5 seconds is that it is normally unnecessary and impossible to keep pressing the key for 5 seconds. On the other hand, if the time is too long, the operation becomes troublesome, so this is considered to be a reasonable time taking both parties into consideration. It is also possible to use other keys in such special situations. When the control microcomputer 5 receives this specific signal, it checks the control signal output (current setting value) to the luminance signal processing circuit 6, color signal processing circuit 8, and audio signal processing circuit 10 that it is currently controlling. This check is performed at fixed time intervals (for example, every 10 minutes) using the timer function of the microcomputer. If the result of this check is different from a predetermined specified value (optimum state at the store), processing is immediately executed to return each circuit to the specified value. The reason why the check interval time is set to 10 minutes in this embodiment is because if this time is too short, the image etc. will suddenly change during operations and evaluations by customers etc., giving a sense of strangeness. This is because the state of unfitness will continue for a long time until the patient returns to normal, so this seems to be a reasonable period of time considering both parties. Further, the above designated values are determined in advance assuming the conditions required for in-store display. If the result of the above check is the same as the designated value, the designated value is retained.

[0008] The check function at fixed time intervals operates only when the above-mentioned specific signal is issued, and the function can be canceled by the operation explained below. However, even when the function is in operation, the transmitter 1 Alternatively, when the keys of the operating section 4 are operated in a normal manner, the timer of the microcomputer is reset to invalidate the checking operation performed during this time. If the key operation is not performed after this reset, the specified value setting operation is executed 10 minutes after the reset. Although this function is particularly effective when displayed at a store as described above, it is inconvenient if it is operated all the time even in a general home after purchase. Therefore, it is necessary to provide a function to cancel this function. In this case, as well as when setting the operation of the function, the transmitter 1 or the operation unit 4 issues a specific signal instructing the cancellation of the function. Such a specific signal is also determined in the same manner as described above, and the control microcomputer 5 is provided with software processing. In the case of this embodiment, if the TV/independent audio switching key is held down for 5 seconds (however, in the normal state, not in the channel preset state), the function is canceled. The specific contents to be controlled in this embodiment are the brightness, contrast, and image quality in the luminance signal processing circuit, the color density in the color signal processing circuit, and the bass level and treble level in the audio signal processing circuit. is free. Next, FIG. 2 will be explained. FIG. 2 is a flowchart for explaining the operation of the control microcomputer 5. In the figure, "ST" represents each processing step. ST1 is a step for checking key inputs made by key operations on the transmitter 1, etc., and processing commands. From the data after ST1 processing, ST
2 is a specific mode (the mode in which the specific signal was issued)
Determine whether If NO, the process is performed in ST1, and if YES, in ST3, the AV value (the current set value for the luminance signal processing circuit 6, etc.) is checked and it is determined whether the time count by the timer is valid. If YES, A in ST4
Set the V value to the specified value and reset the timer in ST3 in ST5. If the judgment in ST3 is NO, ST6
It is determined whether there is a key operation using a remote control or the like. If YES, the timer in ST3 is reset in ST7 and the process returns to ST1. Similarly, if ST6 is NO, ST
Return to 1.

[0009]

[Effects of the Invention] As explained above, according to the present invention, when displaying a color television receiver in a store, the state of the image adjustment, etc. is changed from the initially set suitable state to the unsuitable state by the operation of the purchaser, etc., and remains as it is. As a result of being left unattended, other customers may be misled about the quality and performance of the product. However, as the unsuitable state is automatically set to the specified state after a certain period of time by specific operations in advance, store staff etc. need to check and readjust the product regularly. This greatly contributes to improving the functionality of color television receivers by relieving customers of their inconvenience and by appealing to customers about the correct quality and performance.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of essential parts of an embodiment of a color television receiver according to the present invention.

FIG. 2 is a flowchart for explaining the operation of the control microcomputer 5. FIG.

[Explanation of symbols]

1 Transmitter 2. Color TV receiver body 3 Light receiving section 4 Operation section 5 Controlling microcomputer 6 Luminance signal processing circuit 7 Brightness signal input terminal 8 Color signal processing circuit 9 Color signal input terminal 10 Audio signal processing circuit 11 Audio signal input terminal 12 Cathode ray tube (CRT) 13 Speaker

Claims (2)

[Claims] 1. A transmitter is used to remotely control a brightness signal processing circuit, a color signal processing circuit, and an audio signal processing circuit of a color television receiver through a control microcomputer to perform video adjustment and audio adjustment. In this case, a transmitter that emits a specific optical signal different from the optical signal in addition to the optical signal emitted when performing operations such as normal video adjustment or audio adjustment, and an optical signal from the transmitter. A light receiving unit receives light, converts it into an electrical signal, and outputs the signal to the control microcomputer, and in addition to control processing according to operations such as the normal video adjustment or audio adjustment, when the specific optical signal is received, the brightness is adjusted. A color television set comprising: a signal processing circuit; and a control microcomputer that also performs control processing to output certain control signals to each of the color signal processing circuit and audio signal processing circuit at certain time intervals. Receiving machine. 2. The control device according to claim 1, further comprising an operation section that generates an electric signal corresponding to the specific optical signal in the input signal of the control microcomputer and inputs it to the control microcomputer.
Color television receiver as described.