JP3069050U - Television receiver - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To improve the workability and productivity by eliminating the operation of changing channels by an operator in an adjustment mode at a factory or the like. SOLUTION: A CPU 51 of a microcomputer 5 has a ROM 52.
When various adjustment modes are entered in accordance with the adjustment mode program stored in the tuner circuit, the tuner circuit 2 is controlled to select a channel on which the adjustment mode is to be executed, thereby monitoring the adjustment signal received on that channel. 4 is displayed. That is, it is configured to automatically shift to an external input or a specific channel when entering an arbitrary adjustment mode.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a television receiver, and more particularly to a television receiver in which a method for receiving an adjustment signal used in an adjustment mode at the time of factory production or the like is improved.

[0002]

[Prior art]

 Conventionally, when a television receiver is manufactured in a factory, various adjustments have been made by setting the television receiver to an adjustment mode on the production line. Generally, the adjustment mode is built into the microcomputer software. Japanese Patent Application Publication No. Hei 7-15252 discloses an example in which adjustment is performed by shifting to a service mode using such microcomputer software.

[0005] In such an adjustment mode, adjustment can be normally performed on an arbitrary channel. This is because the equipment for adjusting signals (test signals) in the laboratory may be different from the equipment for adjusting signals in factories or services, so equipment that cannot be adjusted if the channel is fixed is not possible. Is coming out. Therefore, conventionally, adjustment in the adjustment mode has been performed according to the processing procedure shown in FIG.

[0004] That is, first, the operator sets the television receiver to the adjustment mode (step S31), and adjusts the channel to an arbitrary channel (in this case, an external input) (via step S32). Step S33). Next, the operator enters an adjustment mode by selecting an adjustment signal from the external input (step S34), and performs adjustment in that mode (step S35). When the adjustment is completed as described above (Yes in step S36), the operator then adjusts the channel to the next channel (for example, 10 channels) in order to execute the next adjustment mode. (After step S32, go to step S33). Thereafter, the operator enters an adjustment mode by selecting an adjustment signal on the channel (step S34), and performs adjustment in that mode (step S35).

[0005] In this way, the operator tunes the channels one after another, and successively selects an adjustment signal in the channel to perform various adjustments. When the adjustment in all the adjustment modes is completed, the determination in step S12 is Yes, and the processing in the adjustment mode is ended.

[0006]

[Problems to be solved by the invention]

 As described above, in the conventional adjustment mode, the channel is always adjusted first, and then the mode is shifted to the adjustment mode. Therefore, in a work process requiring a high line speed, such as in a factory, such an operation of inputting or switching (switching) to an external input or an arbitrary channel is a burden for the operator, and as a result, productivity is improved. There was a problem that also affected. The present invention has been made to solve such a problem, and its purpose is to improve workability and productivity by eliminating a channel changing operation by a worker in an adjustment mode in a factory or the like. To provide a television receiver.

[0007]

[Means for Solving the Problems]

 In order to solve the above problems, a television receiving apparatus according to the present invention includes a tuning receiver for receiving a signal corresponding to a desired tuning frequency, a tuning controller for controlling the tuning receiver, In a television receiver provided with a tuning means for tuning a desired station, the tuning control means controls the tuning receiving means to control the tuning mode when entering various adjustment modes. By selecting a channel to be executed, an adjustment signal received by that channel is displayed on a monitor. In this way, when entering the various adjustment modes, if the channel for executing the adjustment mode is automatically selected, the operator can tune the channel and then switch to the adjustment mode. It is possible to reduce a series of operations at the factory, such as entering a building, thereby improving workability and productivity.

[0008] Further, the television receiver of the present invention is characterized in that, in the above configuration, the channel selection includes an external input. Recently, the types of adjustment modes have been increasing, and some adjustments have to be performed without external input by using no signal. Therefore, by adding not only a channel but also an external input as a channel selection target by the channel selection control means, it is possible to apply to such an adjustment mode with no signal.

Further, in the television receiver of the present invention, in each of the above-described configurations, the tuning control means shifts to the next adjustment mode when the adjustment in one adjustment mode is completed, and switches the tuning reception means to the next adjustment mode. It is characterized by selecting a channel for controlling and executing the adjustment mode. By automatically shifting to the next adjustment mode each time the adjustment is completed, the operator does not need to perform an operation for shifting to the next adjustment mode, thereby improving workability. It is even better.

[0010] The television receiver according to the present invention, in each of the above-described configurations, includes a selection unit that selects an arbitrary adjustment mode, and the channel selection control unit selects one adjustment mode using the selection unit. Then, the tuning control section controls the tuning receiving means to select a channel for executing the adjustment mode. In this way, simply selecting an arbitrary adjustment mode automatically selects a channel in that adjustment mode, eliminating the need to select a channel and further improving workability. It is.

[0011] In addition, the television receiver of the present invention includes a measuring means for measuring a fixed time in each of the above-described configurations, and the tuning control means performs the next adjustment mode every time the measuring means measures the fixed time. Then, the channel is selected to execute the adjustment mode by controlling the channel selection receiving means. In this way, if the operator only performs the operation of first setting the television receiver to the adjustment mode, then it is only necessary to sequentially perform adjustment in accordance with the various adjustment modes that are automatically set. For workers, workability is better.

[0012]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic block diagram showing the system configuration of the television receiver of the present invention. In the figure, a tuner circuit 2 can receive a signal corresponding to a desired tuning frequency via a U / V antenna 1a, amplifies a received television signal at a high frequency, and further converts the signal into an intermediate frequency. Output. The tuner circuit 2 is also connected to an external input 1b. The tuner circuit 2 may be either a voltage synthesizer system or a PLL synthesizer system.

The intermediate frequency signal output from the tuner circuit 2 is subjected to intermediate frequency amplification by the one-chip IC 3, subjected to various signal processings through detection, and output to the monitor 4 as a video signal. The audio signal is output to a speaker (not shown). Although not shown in the figure, a signal processing circuit for the video signal system separates a luminance signal from the video detection output, amplifies the signal as appropriate, and outputs the amplified signal. It includes a color signal reproduction circuit that separates signals and the like and demodulates them into original color signals, and a synchronous deflection circuit that separates synchronization signals from video detection outputs to obtain vertical and horizontal oscillation outputs.

The one-chip IC 3 includes a predetermined AFT circuit, and keeps the local oscillation frequency of the tuner circuit 2 constant using an error voltage (AFT voltage) generated by a shift between the video intermediate frequency and the reference frequency. I'm sorry. The one-chip IC 3 outputs the AFT voltage and the synchronizing signal separated by the synchronizing deflection circuit to the microcomputer 5 as channel selection control means via individual output terminals. The microcomputer 5 includes a CPU 51, a ROM 52, a RAM 53, an infrared light receiving section 54, and an internal timer circuit 55.

A tuning instruction of the tuner circuit 2 can be given by pressing channel buttons “1” to “12” provided on an operation panel (not shown) of the remote control transmitter 11. When a channel button is pressed, an infrared remote control signal corresponding to the channel button is transmitted, and the infrared remote control signal is received by the infrared receiving section 54 of the microcomputer 5 to detect which channel button has been pressed. For each channel number of the channel button, band (VL, VH, U) information to be set by the tuner circuit 2 and a tuning frequency are digitally coded and stored in the ROM 52. .

The microcomputer 5 retrieves the digital code corresponding to the channel button actually operated from the ROM 52 and outputs the digital code to the tuner circuit 2, thereby tuning the tuner circuit 2 to the tuning frequency.

In the above configuration, in the present embodiment, an adjustment mode program for automatically selecting a channel for executing the adjustment mode when entering various adjustment modes is stored in the ROM 52 of the microcomputer 5. The adjustment mode program is executed by the CPU 51. As a result, it is possible to reduce a series of operations in a conventional factory, such as a case where an operator adjusts (switches) a channel and then enters an adjustment mode, thereby improving workability and productivity.

In this embodiment, it is assumed that the AFT adjustment is performed by an external input, and a red solid (one red color) adjustment signal is provided on channel 10, a color bar adjustment signal is provided on channel 12, and a color bar adjustment signal is provided on channel 12. Assuming that an adjustment signal of a monoscope pattern (MONO SCOPE PATTERN) is prepared for each channel, the ROM 52 stores the external input 1b, channel data (channel frequency) of 10 channels, An adjustment mode program programmed to select channel data of 12 channels (channel frequency) and channel data of 15 channels (channel frequency) in this order is stored. That is, the operator simply selects the adjustment mode, and automatically selects a channel (including the external input 1b) for executing the adjustment mode. It should be noted that the present television receiver actually has dozens of adjustment modes, but for simplicity, the description will be limited to the four adjustment modes described above. .

Next, a processing operation in an adjustment process when the television receiver having the above configuration is manufactured in a factory will be described with reference to a flowchart shown in FIG. Note that the internal timer circuit 55 is not used in this processing operation. The operator of the adjustment process sets the television receiver to the adjustment mode (step S1) and performs various adjustments. The adjustment mode can be set, for example, by operating a plurality of specific keys (for example, four keys) of the remote control transmitter 11 in a fixed order. The setting can also be made by operating an adjustment switch (not shown) provided on the apparatus main body. In the following, the adjustment mode is executed using the remote control transmitter 11.

When the adjustment mode is set, the CPU 51 first enters the AFT adjustment mode according to the adjustment mode program stored in the ROM 52 (via step S2 to step S3). That is, the CPU 51 controls the tuner circuit 2 to set the receiving channel to the external input 1b (step S4). Thereby, the operator adjusts the DC voltage appearing in proportion to the deviation of the local oscillation frequency based on the voltage value of 2.5 V appearing on the external input 1b (step S5).

When the adjustment is completed in this manner, the operator next operates a specific key (for example, a key of channel number 1) of the remote control transmitter 11 to notify the end of the adjustment. Thereby, the infrared remote control signal corresponding to this channel key is transmitted from the remote control transmitter 11.

This remote control signal is received by the infrared light receiving section 54 of the microcomputer 5 and input to the CPU 51. When receiving the remote control signal, the CPU 51 makes a positive determination in step S6. Therefore, according to the program stored in the ROM 52, the CPU 51 confirms that the next adjustment mode is present (the determination in step S2). Is No), and the process enters the red adjustment mode, which is the next adjustment mode (step S3). That is, the CPU 51 reads channel data (channel frequency) of 10 channels from the ROM 52, performs A / D conversion as appropriate, and outputs the data to the tuner circuit 2, thereby tuning the tuner circuit 2 to the tuning frequency (channel 10). (Step S4). As a result, the tuner circuit 2 receives the solid red signal prepared as an adjustment signal for ten channels, so that the monitor 4 displays a red image on the entire screen. The operator adjusts each of the RGB beams correctly while viewing this screen (step S5).

When the adjustment is completed in this way, the operator next operates a specific key (key of channel number 1) of the remote control transmitter 11 to notify the end of the adjustment. Thus, the remote control transmitter 11 transmits an infrared remote control signal corresponding to the channel key.

This remote control signal is received by the infrared light receiving section 54 of the microcomputer 5 and input to the CPU 51. When receiving the remote control signal, the CPU 51 makes a positive determination in step S6. Therefore, according to the program stored in the ROM 52, the CPU 51 confirms that the next adjustment mode is present (the determination in step S2). Is affirmative), and enters the color bar adjustment mode, which is the next adjustment mode (step S3). That is, the CPU 51 reads channel data (channel frequency) of 12 channels from the ROM 52, performs A / D conversion as appropriate, and outputs it to the tuner circuit 2, thereby tuning the tuner circuit 2 to the tuning frequency (12 channels) ( Step S4). As a result, the tuner circuit 2 receives the signal of the color bar prepared as the adjustment signal for the 12 channels, so that the image of the color bar is displayed on the monitor 4. The operator adjusts each color while viewing this screen (step S5).

When the adjustment is completed in this way, the operator next operates a specific key (key of channel number 1) of the remote control transmitter 11 to notify the end of the adjustment. Thus, the remote control transmitter 11 transmits an infrared remote control signal corresponding to the channel key.

The remote control signal is received by the infrared light receiving section 54 of the microcomputer 5 and is input to the CPU 51. When receiving the remote control signal, the CPU 51 makes a positive determination in step S6. Therefore, according to the program stored in the ROM 52, the CPU 51 confirms that the next adjustment mode is present (the determination in step S2). Is confirmed to be Yes), and the control enters the next adjustment mode of the monoscope pattern adjustment mode (step S3). That is, the CPU 51 reads out 12-channel data (channel frequency) from the ROM 52, performs A / D conversion as appropriate, and outputs it to the tuner circuit 2, thereby tuning the tuner circuit 2 to the tuning frequency (15 channels). (Step S4). As a result, the tuner circuit 2 receives the signal of the monoscope pattern prepared as the adjustment signal for the 15th channel, so that the monitor 4 displays the image of the monoscope pattern. The operator appropriately adjusts the screen size while viewing this screen (step S5).

When the adjustment is completed in this manner, the operator next operates a specific key (key of channel number 1) of the remote control transmitter 11 to notify the end of the adjustment. Thus, the remote control transmitter 11 transmits an infrared remote control signal corresponding to the channel key.

This remote control signal is received by the infrared light receiving section 54 of the microcomputer 5 and input to the CPU 51. Upon receiving this remote control signal, the CPU 51 makes a positive determination in step S6, and checks whether there is a next adjustment mode according to the program stored in the ROM 52. In this case, since the next adjustment mode does not exist (that is, the determination in step S2 is Yes), the adjustment mode ends at this point.

That is, according to the television receiver of the present invention, the AFT adjustment by the 2.5 V voltage when there is no signal and the RGB by the red solid signal can be performed only by pressing the specific key of the remote control transmitter 11 three times. Adjustment, adjustment of each color by a signal of a color bar, and adjustment of a screen size by a signal of a monoscopic pattern. In other words, it is possible to reduce a series of operations in the factory, such as adjusting the channel (switching) and then entering the adjustment mode as before, thereby improving workability and productivity.

In the above-described embodiment, the configuration is such that, by inputting the end of the adjustment in each adjustment mode, a transition is made to the next adjustment mode. Key (this key may be a newly provided key or a key that has also been used in the past), and by operating that key, the adjustment mode is automatically set. It may be configured to automatically select (set) the corresponding channel upon entering. In this case, in the adjustment mode program stored in the ROM 52, the order of the adjustment modes to be executed is not programmed, and the program is programmed to execute the adjustment mode after waiting for the adjustment mode selection signal. I have.

FIG. 3 is a flowchart showing a processing operation of the television receiver according to this embodiment. That is, the worker in the adjustment process sets the television receiver to the adjustment mode (step S11). When the adjustment mode is set, the CPU 51 waits for an adjustment mode selection signal from the remote control transmitter 11 according to the adjustment mode program stored in the ROM 52 (the process proceeds to step S13 via step S12). Here, for example, when a selection signal to enter the AFT adjustment mode is input (when it is determined Yes in step S13), the CPU 51 controls the tuner circuit 2 and sets the reception channel to the external input 1b ( Step S14). Thereby, the operator adjusts the DC voltage appearing in proportion to the deviation of the local oscillation frequency based on the voltage value of 2.5 V appearing on the external input 1b (step S15). Thereafter, returning to step S12, the CPU 51 confirms that there is a next adjustment mode in accordance with the program stored in the ROM 52 (confirms that the determination in step S12 is No), and It waits for the input of the adjustment mode selection signal from the remote control transmitter 11 (via step S12 to step S13). Such processing (steps S12 to S16) is repeated until the last adjustment mode is selected. When a signal indicating the end of the adjustment mode is finally transmitted from the remote control transmitter 11, the determination in step S12 is made. Is Yes, the adjustment mode ends at this point.

In each of the above embodiments, the end of the adjustment in each adjustment mode or the selection of each adjustment mode is input by pressing a specific key of the remote control transmitter 11. Such a key operation is also eliminated, and, for example, when a certain time has elapsed after shifting to one adjustment mode (this is measured by the internal timer circuit 55 shown in FIG. 1), the next adjustment mode is automatically performed. It may be configured to shift to.

FIG. 4 is a flowchart showing a processing operation of the television receiver according to this embodiment. That is, the worker in the adjustment process sets the television receiver to the adjustment mode (step S21). When the adjustment mode is set, the CPU 51 first enters the AFT adjustment mode according to the adjustment mode program stored in the ROM 52 (the process proceeds from step S22 to step S23). That is, the CPU 51 controls the tuner circuit 2 to set the receiving channel to the external input 1b (step S24). Further, the CPU 51 activates the internal timer circuit 55 to start measurement for a predetermined time (step S25). As a result, the operator appears on the external input 1b. Based on the voltage value of 5V, the DC voltage appearing in proportion to the deviation of the local oscillation frequency is adjusted (step S26). During this time, the CPU 51 monitors the measurement of the fixed time by the internal timer circuit 55 (step S27). Then, by receiving a signal indicating the end of the measurement for a certain period of time from the internal timer circuit 55, the determination in step S27 becomes Yes. At this point, the internal timer circuit 55 is reset, and the process returns to step S22. In accordance with the stored program, it is confirmed that the next adjustment mode is present (it is determined that the determination in step S22 is No), and the next adjustment mode, that is, the red adjustment mode is entered. (Step S23). When such processing (steps S22 to S27) is repeated up to the last adjustment mode, the determination in step S22 becomes Yes, and the adjustment mode ends at this point.

[0034] With this configuration, if the operator only performs the operation of first setting the television receiver to the adjustment mode, then the operator sequentially adjusts to the various adjustment modes that are automatically set. It only needs to be performed, and the workability is better for the worker.

[0035]

[Effect of the invention]

 According to the television receiver of the present invention, when entering the various adjustment modes, the channel selection control means controls the channel selection reception means to select a channel for executing the adjustment mode, thereby selecting the channel. The adjustment signal received at is displayed on the monitor. The channel selection is configured to include not only channels but also external inputs. As described above, when entering various adjustment modes by the channel selection control means, an external input or a channel for executing the adjustment mode is automatically selected. It is possible to reduce a series of operations at the factory, such as entering the adjustment mode from the beginning, and to improve workability and productivity.

According to the television receiver of the present invention, when the tuning in one adjustment mode is completed, the tuning control means shifts to the next adjustment mode and controls the tuning receiving means to control the tuning reception means. The channel for executing the adjustment mode is selected. By automatically shifting to the next adjustment mode every time the adjustment is completed in this way, the operator does not need to perform an operation for shifting to the next adjustment mode. It will improve.

Further, according to the television receiver of the present invention, there is provided a selecting means for selecting an arbitrary adjustment mode, and the tuning control means, when one of the adjusting modes is selected by the selecting means, receives the selected tuning mode. It is characterized by controlling the means and selecting a channel for executing the adjustment mode. As described above, by simply selecting an arbitrary adjustment mode, a channel in the adjustment mode is automatically selected, so that the operation of selecting a channel is not required, and the workability is further improved.

Further, according to the television receiver of the present invention, there is provided a measuring means for measuring a fixed time, and the tuning control means shifts to the next adjustment mode every time the measuring means measures the fixed time, It is characterized in that the channel selection receiving means is controlled to select a channel for executing the adjustment mode. In this way, if the operator only performs the operation of first setting the television receiver to the adjustment mode, then the operator only needs to sequentially perform adjustment in accordance with the various adjustment modes that are automatically set. Workers will have better workability.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram showing a system configuration of a television receiver of the present invention.

FIG. 2 is a flowchart showing one embodiment of a processing operation in an adjustment process when the television receiver of the present invention is manufactured in a factory.

FIG. 3 is a flowchart showing another embodiment of the processing operation in the adjustment process when the television receiver of the present invention is manufactured in a factory.

FIG. 4 is a flowchart showing still another embodiment of the processing operation in the adjustment step when the television receiver of the present invention is manufactured in a factory.

FIG. 5 is a flowchart illustrating a processing operation in an adjustment process when a conventional television receiver is manufactured in a factory.

[Explanation of symbols]

 1a U / V antenna 1b External input 2 Tuner circuit (selection receiving means) 3 1-chip IC 4 monitor 5 Microcomputer (selection control means) 11 Remote control (selection means, selection means) 51 CPU 52 ROM 53 RAM 54 Infrared light reception Part 55 Internal timer circuit (measuring means)

Claims (5)

[Utility model registration claims] 1. A tuning control means for receiving a signal corresponding to a desired tuning frequency, a tuning control means for controlling the tuning receiving means, and a tuning means for selecting a desired station. In the television receiving device, when the tuning control means enters various adjustment modes,
A television receiving apparatus, wherein the tuning signal receiving means is controlled to select a channel on which the adjustment mode is to be executed, thereby displaying an adjustment signal received on the channel on a monitor. 2. The television receiver according to claim 1, wherein the channel selection includes an external input. 3. When tuning in one adjustment mode is completed, the tuning control means shifts to the next adjustment mode, and controls the tuning receiving means to select a channel for executing the adjustment mode. The television receiver according to claim 1, wherein: 4. A tuning means for selecting an arbitrary adjustment mode, wherein the tuning control means controls the tuning receiving means when one of the adjustment modes is selected by the selecting means, thereby controlling the tuning mode. The television receiver according to claim 1, wherein a channel for performing the step (b) is selected. 5. A measuring means for measuring a fixed time, wherein the tuning control means shifts to the next adjustment mode every time the measuring means measures a certain time, and controls the tuning receiving means. 3. The television receiver according to claim 1, wherein a channel for executing the adjustment mode is selected.