JPH0562846B2 - - Google Patents

Description

[Detailed Description of the Invention] A. Field of Industrial Application The present invention relates to a receiver, for example, DBS.
(directbroadcast satellite) It is suitable for application when receiving broadcasts.

B. Summary of the Invention The present invention provides a memory for storing tuning data corresponding to a plurality of channels, a channel display means for displaying the selected channel, and a corresponding channel selection from the memory based on an incoming channel selection command. In a receiver equipped with a tuning means for reading out data and tuning broadcast waves, when a tuning command is given to an empty channel for which tuning data is not stored in the memory, an unselectable mark is displayed on the channel display means. By displaying the channel for a predetermined period of time, and then displaying the original selected channel, if the user makes a mistake in operation, the user is notified of the error, and the user is also able to return to the original selection without having to perform the operation again. This is designed to maintain station reception status.

C. Conventional technology DBS broadcasting allows receivers scattered over a wide area to directly receive broadcast waves arriving from artificial satellites using small parabolic antennas. It is being considered that the system could be used as a means of transmitting information from a center to each branch via receivers installed in branches scattered over a wide area. In this case, the user can specify any frequency included in the applicable broadcast band and preset a channel that can transmit information.
Thus, by simultaneously transmitting a plurality of pieces of information using a plurality of channels preset with tuning data representing a specific frequency, utilization efficiency can be increased.

In this way, when a plurality of channels capable of transmitting information are preset, the user needs to command the channel to be selected by, for example, key input and select the broadcast wave of the desired channel.

D Problems to be Solved by the Invention However, when performing a channel selection operation, there are cases where a channel for which the channel selection data is not preset is commanded due to an erroneous operation, and in such a case,
The channel selection operation is performed while the frequency to be selected remains undefined. Therefore, since the channel selection operation is performed without control, random images due to noise are formed on the CRT display, for example.
There was a risk of causing discomfort to users.

In addition, in the past, users only recognized that they had made an erroneous operation by seeing a random image displayed on a CRT display.
After that, I had to redo the channel selection operation. Therefore, if an erroneous operation is made once, there is a complication in that the user must perform the channel selection operation at least once more.

The present invention has been made in consideration of the above points, and
If a channel for which selection data has not been preset is commanded, this can be notified.
Another object of the present invention is to provide a receiver that can maintain the original channel selection reception state without re-operating, thus improving operability.

E. Means for Solving the Problems In order to solve the problems, the present invention provides a memory 24 for storing tuning data corresponding to a plurality of channels, and channel display means 14 and 22 for displaying the selected channels. , 23, and tuning means 14, 15 for reading out corresponding tuning data from the memory 24 based on an incoming channel tuning command and tuning the broadcast wave. When a channel selection command for an empty channel for which no selection data is stored is received, the channel display means 14, 22, and 23 display the unselectable mark "--" for a predetermined period of time, and then the empty channel is displayed. The channel currently being tuned is displayed before a channel selection command arrives.

F Function The memory 24 stores preset tuning data corresponding to a plurality of channels.
When a channel selection command is given in response to an input operation by a user, the tuning means 14 and 15 read out the tuning data of the channel indicated by the channel selection command from the memory 24, and perform the tuning based on this tuning data. Select a broadcast wave. At the same time, the channel selection means 14,1
5 causes the channel display means 14, 22, and 23 to display the selected channel.

In addition, when the channel selection means 14 and 15 are instructed to select an empty channel for which the channel selection data is not stored in the memory 24, the channel display means 1
At 4, 22, and 24, there is a mark "--" indicating that the channel cannot be selected.
is displayed, and then the original selected channel is displayed.

As a result, the user can visually check whether the operation has been performed appropriately, and even if the user makes a mistake, the user can maintain the channel selection reception state without having to perform the operation again.

G. Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings. In FIG. 1, broadcast waves received by an antenna 11 are supplied to an information reproducing circuit 13 of a broadcast wave receiving section 12, and the information reproducing circuit 13 selects a channel corresponding to a tuning signal S1 given from a tuning circuit 15. Receive broadcast waves.

The channel selection circuit 15 is controlled to select a channel by a channel selection command signal S2 generated in a signal processing circuit 14 having a microcomputer configuration, for example, and sends out a channel selection signal S1 corresponding to the channel selection command signal S2.

As shown in FIG. 3, the signal processing circuit 14 is connected to a key matrix 21 including an input device 1 having a numeric keypad having keys "0" to "9" and an end key "ENTER". When each of the 21 keys is selectively operated, code data representing the corresponding number is transmitted to the signal processing circuit 14.
The data is taken into the input data register 25 of.

In the case of this embodiment, the signal processing circuit 14 is configured to input that the data input operation has been completed by inputting numerical data using the numeric keypad and then operating the end key "ENTER".

In this way, when numerical data is entered one digit at a time using the numeric keypad, the signal processing circuit 14
The character generating means 22 is operated based on the data taken in one digit at a time, and a character corresponding to the input channel data is displayed on the data display 23 of predetermined digits, for example, five digits, sequentially from the lower digit to the upper digit. The display is made to go.

Furthermore, when the end key "ENTER" is operated, the signal processing circuit 14 inputs data into the non-volatile memory 2 based on the numerical data taken in from the numeric keypad.
The channel selection data corresponding to No. 4 is extracted.

In the above configuration, the signal processing circuit 14
The broadcast wave selection process for each channel is executed according to the processing procedure shown in the figure. That is, in step SP1, after starting the program, the signal processing circuit 1
4 is key matrix 2 in step SP2.
It is determined whether numerical data as a channel selection command for commanding the channel to be selected from the numeric keypad 1 has been input, and if a negative result is obtained,
The step SP2 is repeated until numerical data specifying the channel to be selected is obtained.

Eventually, when numerical data specifying a channel is input from the key matrix 21, it is stored in the input data register 25 and the step
When a positive result is obtained in SP2, the process moves to step SP3, where a number indicating the input channel is displayed on the data display 23 (for example, the number "5" for 5 channels). Thereafter, the process moves to the next step SP4, and it is determined whether data has been input from the end key "ENTER" of the key matrix 21. If a negative result is obtained at step SP4, the step SP4 is repeated and data is waited for input from the end key "ENTER". When data is input from the end key "ENTER" and a positive result is obtained in step SP4, the signal processing circuit 14 moves to step SP5 and imports the channel selection data corresponding to the key-input channel from the non-volatile memory 24. , then move to step SP6.

Step SP6 is a step in which it is determined based on the frequency data from the nonvolatile memory 24 whether or not the frequency data is preset. The signal processing circuit 14 performs the step SP6
If a positive result is obtained in step SP7, the key-input channel number is continuously displayed, and the channel selection circuit 15 of the broadcast wave receiver 12 receives the selection from the non-volatile memory 24. giving a tuning command signal S2 corresponding to the station data to perform a tuning operation for the channel;
Thereafter, the process returns to step SP2 and waits for the next channel selection command, that is, data representing the channel to be selected.

Hereinafter, each time the numerical data commanding the channel to be selected is input from the key matrix 21, the steps SP2-SP3-SP4-SP5-SP6-SP7 are executed.
The channel selection operation for the channel is executed through the loop.

Incidentally, there are cases where the user inputs data corresponding to a channel that has not been preset from the key matrix 21 by erroneous operation. In this case, if a negative result is obtained at step SP6, the process moves to step SP8. At step SP8, the signal processing circuit 14 generates a tuning disabled mark, such as "--'' is displayed on the data display 23, and then the process moves to the next step SP9, where it is determined whether the display time has elapsed for a sufficient period of time for the user to visually check, for example, 3 seconds.

When the display time has elapsed for 3 seconds, a positive result is obtained in step SP9, and the process moves to the next step SP10, where the channel that was selected before the erroneous operation is selected based on the data stored in the channel selection register 26. The data display 23
to be displayed again.

For example, the 5th channel, the 9th channel, the
Frequency data for the 11th channel is preset and stored in the non-volatile memory 24, and the 5th channel is currently selected and "5" is displayed on the input data display 23 as shown in FIG. 4A. Assume that it is displayed. If a key input operation is performed for the seventh channel that has not been preset in this state, the signal processing circuit 14 displays the number "7" on the data display 23 through steps SP2 and SP3 as shown in FIG. 4B. .

Thereafter, when data is given from the end key "ENTER", the signal processing circuit 14 passes through steps SP4 and SP5 and determines in step SP6 whether or not the tuning data for the seventh channel has been preset. In this case, since the channel selection data is not preset for the seventh channel, a negative result is obtained at step SP6, and step SP8 is
Then, the program proceeds to step SP9 and displays the unselectable mark "--" for 3 seconds as shown in FIG. 4C.

When three seconds have elapsed, the signal processing circuit 14 moves to step SP10 and displays the channel that was being displayed before the erroneous operation, that is, "5" representing the fifth channel, as shown in FIG. 4D.

If the 7th channel is specified by mistake, the display will change from Figure 4A to 4th channel as described above.
The change occurs as shown in Figure D, but at this time, the channel selection command signal S2 is not sent from the signal processing circuit 14 to the broadcast wave receiving section 12, and therefore, the channel was selected before the erroneous operation. The fifth channel is continuously selected without interruption even after an erroneous operation.

In this way, according to the receiver shown in Fig. 1, if a user makes a mistake when inputting a channel selection and specifies a channel that has not been preset, a message indicating the mistake has been made is displayed and the user is visually notified. You can confirm it. Also, at this time, since the channel selection is continued without switching,
It is not necessarily necessary to perform the channel selection operation again after an erroneous operation, and the input operation can be simplified accordingly.

Incidentally, in DBS broadcasting, unlike general television broadcasting, it is possible to arbitrarily allocate frequencies to each channel, so it is possible to preset and erase the tuning data corresponding to the frequency for each channel many times. Therefore, the above-mentioned effect becomes even more significant because there is a greater chance of erroneous operations being performed during input.

In addition, although the embodiment in which the present invention is applied to a DBS receiver has been described above, the present invention can be widely applied to various receivers as necessary.

H. Effects of the Invention As described above, according to the present invention, when a user makes a mistake and inputs a tuning command for a channel for which tuning data has not been preset, it is possible to notify the user of this fact. In addition, by maintaining the channel selection reception state at that time, it is possible to eliminate the need for a new input operation, and thus it is possible to realize a receiver that can further improve operability.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the receiver according to the present invention, FIG. 2 is a flowchart showing the procedure for channel selection by the receiver of FIG. 1, and FIG. FIG. 4 is a schematic diagram showing the input device used, and FIG. 4 is a schematic diagram showing the order in which the display changes when a channel selection command is erroneously operated. 11... Antenna, 12... Broadcast wave receiving section, 1
4...Signal processing circuit, 21...Key matrix,
22...Character generation means, 23...Data display device,
24...Nonvolatile memory.

Claims (1)

[Scope of Claims] 1. A memory for storing tuning data corresponding to a plurality of channels, a channel display means for displaying the selected channel, and a corresponding channel selection data from the memory based on an incoming channel selection command. and a channel selection means for reading out station data and selecting a broadcast wave, and said channel selection means causes said channel display means to select a channel when an empty channel selection command for which channel selection data is not stored in said memory arrives. A receiver characterized in that a disabled mark is displayed only for a predetermined time, and then a channel that was being selected before the channel selection command for the empty channel arrives is displayed.