JP2567756B2 - Image automatic control display device for television receiver - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention automatically adjusts an image of a television receiver to an optimum state in accordance with external factors such as ambient brightness, and displays a controlled item and a controlled amount by the automatic adjustment on a screen. It is related to the device.

[0002]

2. Description of the Related Art Conventionally, it is known that a controlled item and a controlled variable mark are displayed on a screen when a television broadcast radio wave is switched between monaural and stereo, or when an image or a sound is adjusted by a remote control operation. Has been.

There is also known a device which automatically adjusts a controlled item of an image according to the brightness of the surroundings and always controls the image in an optimum state.

[0004]

[Problems to be solved] However, if the state of the room such as brightness changes while watching the television, the internal control means operates to automatically control the image while the viewer is not aware of it, and The control amount of the control item has changed. Therefore, the viewer has the inconvenience of having an incorrect recognition of the image.

According to the present invention, each time the internal control means automatically controls the image, the image is displayed to the observer to let the operator know that the automatic control has worked and to confirm the control amounts of various controlled items of the image. To aim.

[0006]

SUMMARY OF THE INVENTION The present invention comprises a sensor for detecting a change in brightness condition around a television receiver,
An internal control means for automatically controlling various controlled items of an image to adjust to an optimum image state by fuzzy control, photoelectric control, etc. linked to the sensor, and an internal control means and an image signal processing circuit of a television receiver. An image automatic control display device of a television receiver, which is connected to each other and includes control display means for displaying various controlled items of images and control amount marks on a screen all at once.

[0007]

[Operation] When there is a change in the state around the television receiver,
The sensor detects it and activates the internal control means.
And automatically adjust the controlled items to adjust the image,
The image that is the easiest to see among the new state changes. Further, the control display means simultaneously displays the controlled item (8) and the controlled variable mark (9) after each control as shown in FIG. 1, and displays the controlled item (8) for each controlled item (8) for the current image. Display the controlled variable mark (9).

[0008]

[Effect] The viewer can always appreciate the highest high screen by the action of the internal control means, and even if the internal control means changes the image state without being aware of it, the screen is controlled on each occasion. Since the item (8) and the respective control amount marks (9) appear at the same time, there is an advantage that the automatic control is activated and the image data can be correctly recognized.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an outline of a television receiver. An image signal from an antenna through a tuner (1) passes through an image signal processing circuit (2) and an image is displayed on a cathode ray tube (6). .
Like the photoelectric sensor, a sensor (3) that detects a change in the state of brightness around the receiver is provided in the receiver. The sensor (3) is a microcomputer (4) built into the receiver
The information of the peripheral state detected by the sensor is processed by the microcomputer (4) and the image signal processing circuit (2) is fuzzy controlled to control various controlled items such as contrast, brightness, image quality and speed. Modulation is automatically controlled and the change in state is followed to automatically control the image to the optimum state that is most easy to see. The image adjustment is not limited to fuzzy control, and various control methods such as photoelectric control can be implemented. The sensor (3) was set to detect the brightness of the surroundings, but in addition, the microcomputer (4) detects the surrounding color tone, the viewing distance with the viewer, etc., and the microcomputer (4) is optimal for these conditions. The controlled item may be automatically controlled so as to create an image of the state. Both viewing distance and brightness condition are external conditions,
The applicant applied for a configuration for fuzzy control of images in Japanese Patent Application No. 2-2
Proposed in 49482.

Automatic control means and controlled items of the present invention (8)
The means for displaying the control amount mark (9) on the screen is executed by the program shown in FIG. In FIG. 3, after the power is turned on, when the computer inputs the peripheral state detection information from the sensor (12) following the “previous processing” (11), it compares it with the previous state detection input (13) and It is judged (14) whether the state is the same as before. If there is no state change, only the image is displayed on the screen, and the control status goes to "next processing" (19) and then "next processing" (20). When it is determined that there is a state change (14), the microcomputer (4) controls the image signal processing circuit (2) to control various controlled items (8) for the state change (15). To do.

Further, the microcomputer (4) controls the switch circuit (5) to perform various data processing (16) of various controlled items (8) and the controlled variable mark (9) after each control. , The process (18) of displaying all on the screen at the same time as shown in FIG. 2 is executed. The above display is continued for a certain time, for example, 10 seconds, and the process is switched to the non-display process (19) due to the passage of time.

The program for displaying controlled items according to the present invention has been described above. Compared with the conventional program for controlling and displaying the remote control key operation shown in FIG.
The difference is clear. Conventionally, when the control button of the remote controller is pushed, the key input is judged (21) in FIG. 4, and the control (22) corresponding to the key input and the operation is executed.
Further, the display data processing (23) corresponding to the control includes a microcomputer (4), an image signal processing circuit (2) and a switch circuit (5).
Then, the process (18) of displaying on the screen is performed, and the controlled items are displayed individually or all at once, and after a lapse of a predetermined time, the process proceeds to the process (19) of not displaying.

Further, when it is difficult to display the control state on the screen every time the fuzzy control is activated during television watching, it is possible to switch and set the process not to be displayed by the switch operation of the remote controller.

When the television power is turned off, the control state of each item is initialized, but whether the function of the fuzzy control display means is the operation setting or the stop setting is stored in the non-volatile memory. In FIG. 5, when the power is turned on and the start (24) is performed,
First, in initialization 1 (25), it is set whether each terminal of the microcomputer is for input or output.

Next, the nonvolatile memory is read (26), and the function of the display means by fuzzy control judges (27) whether the operation setting is the stop setting. If it is the operation setting, the display of FIG. 2 is displayed on the screen if there is a state change such as a change in external brightness. If the function of the display means is set to stop, the screen shown in FIG. 2 is not displayed even if the state changes.

Since it takes some time to read information from the non-volatile memory, the RAM on the CPU is usually provided with a monitor flag to hold the information. Then, the monitor flag is turned on (28) or off (29) according to the information read from the non-volatile memory.

"Initialization 2" (30) carries out processing such as from which channel to start, from which level the color density starts. FIG. 5 is connected to FIG. "Processing 1" (31) is processing such as remote control reception processing. During the key input process, the function operation setting or the stop setting of the fuzzy control display means is judged (32), and if the monitor flag is on in response to the key input judging whether the monitor flag is on or off (33), it is turned off. (34), and if it is off, turn it on (35). Further, the changed state of the monitor flag is written in the non-volatile memory (36).

The "process 2" (37) is another key input process or the process of the display function of the fuzzy control shown in FIG. The processing method of the monitor flag is shown in FIG.

FIG. 7 corresponds to the "display processing" (18) in FIG. Whether the monitor flag is on or off is determined (39), and if it is on, processing for displaying as shown in FIG. 2 is performed (40). If off, do nothing.

With the above program, the viewer can display the control items on the screen for a predetermined time each time the fuzzy control of the internal control means operates according to the change of the surroundings of the receiver, or even if the fuzzy control works. It is possible to switch so that the display of control items does not occur on the screen.

[Brief description of drawings]

FIG. 1 is a schematic circuit of a television receiver.

FIG. 2 is a screen display.

FIG. 3 is a program for fuzzy control and its display according to the present invention.

FIG. 4 is a conventional display program by key input.

FIG. 5 is a program for determining and switching the setting state of the fuzzy control display means.

FIG. 6 is a program for determining and switching the setting state of the fuzzy control display means.

FIG. 7 is a program for displaying on a screen by display means.

[Explanation of symbols]

 (2) Image signal processing circuit (3) Sensor (4) Microcomputer (5) Switch circuit (6) Cathode ray tube (7) Screen (8) Controlled item (9) Control amount mark

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-60-223271 (JP, A) JP-A-63-173478 (JP, A) Actual development Sho-58-132467 (JP, U)

Claims (1)

(57) [Claims] 1. A sensor provided in a television receiver for detecting a change in state of brightness around the receiver, and a fuzzy control, photoelectric control, etc. linked to the sensor to automatically control various controlled items of an image. Control to control the image to the optimum image condition and the internal control means and the image signal processing circuit of the television receiver to display various controlled items of the image and the control amount mark on the screen all at once. An image automatic control display device of a television receiver comprising a display means.