JP3389348B2 - Tuning device, television receiver and video tape recorder using the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a channel selection device, a television receiver and a video tape recorder using the channel selection device, and in particular, it has a BS tuner, a CATV tuner, and a terrestrial tuner, and is desired according to channel demand. And a television receiver and a video tape recorder using the same.

[0002]

2. Description of the Related Art In a conventional channel selecting device having a BS tuner and a terrestrial tuner capable of receiving a CATV station,
When selecting a channel, the remote controller 1 shown in FIG.
It was necessary to input the desired channel number after turning on the BS key 2 of 1., and when selecting the CATV channel, it was necessary to input the desired channel number after turning on the CATV key 3.

[0003]

In such a conventional channel selecting apparatus, it is necessary to provide the BS key 2 and the CATV key 3 in order to select the BS channel or the CATV channel, and the number of keys is increased. There was a problem.
On the other hand, in general, CATV subscribers often watch BS broadcasts that have been converted into CATV channels, so that it is sufficient for CATV subscribers to select the CATV channel directly. In this case, the CATV key is required, but the BS key is unnecessary. Also, it is sufficient for non-CATV subscribers to select the BS channel directly. In this case, the BSTV key is necessary for non-CATV subscribers, but the CATV key is unnecessary. Like this, CATV
Since subscribers do not need BS channels, they often set skip information for all BS channels.
Conversely, non-CATV subscribers often set skip information for all CATV channels. However, in the conventional channel selecting device, since both the CATV key and the BS key are provided on the remote controller and the front switch, the number of buttons (keys) is large and the operation is complicated.

Therefore, a main object of the present invention is to provide a channel selection device capable of reducing the number of buttons provided on a remote controller or a front switch.
Another object of the present invention is to provide a television receiver capable of reducing the number of buttons provided on a remote controller or a front switch. Another object of the present invention is to provide a video tape recorder which can reduce the number of buttons provided on a remote controller or a front switch.

[0005]

According to the present invention, in a channel selection device having a BS tuner, a CATV tuner, and a terrestrial tuner and selecting a channel in response to a channel selection request, at least skip information of the BS station and the CATV station is included. The written memory, the requesting means for requesting the setting of the BS / CATV reception mode, the searching means for searching the skip information written in the memory in response to the setting request from the requesting means, and the BS according to the search result by the searching means. The channel selection device is characterized by comprising setting means for setting either the reception mode or the CATV reception mode.

Such a channel selecting device can be incorporated in a television receiver or a video tape recorder.

[0007]

The operator has, for example, B provided on the remote controller.
When the S / CATV key is turned on, for example, the microcomputer searches the skip information written in the memory. Then, for example, if skip information is set for all CATV stations, the microcomputer sets the reception mode to the BS reception mode. As a result, the BS tuner selects the BS station with the channel number input by the operator thereafter. When the operator turns on the BS / CATV key again, the microcomputer sets the reception mode to the CATV reception mode.

[0008]

According to the present invention, since the reception mode is set based on the skip information written in the memory,
The BS key and the CATV key can be combined into one, and the number of keys provided on the remote controller and the front switch can be reduced. The above-mentioned objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of the embodiments with reference to the drawings.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a video tape recorder 10 of this embodiment includes a terrestrial tuner 12 including a CATV tuner and a BS tuner 14, and a desired output from the terrestrial tuner 12 or the BS tuner 14. The video signal of the channel is supplied to the video processing circuit 18 via the signal switching circuit 16. Then, the video signal that has been subjected to predetermined processing by the video processing circuit 18 is output. The terrestrial tuner 12, the BS tuner 14, and the signal switching circuit 16 are
It is controlled by the tuning microcomputer 20. That is, the channel selection microcomputer 20 receives the infrared signal given from the remote controller 22, reads the skip information from the memory 24, and based on this, the terrestrial tuner 12 or the BS tuner 14.
A channel selection signal is output to. In addition, the signal switching circuit 1 is so arranged as to output the signal from the tuner which has output the tuning signal.
The control signal is output to 6. When the channel selection microcomputer 20 receives from the terrestrial tuner 12 or the BS tuner 14 an information signal indicating that a video of a desired channel is displayed on a monitor (not shown), the channel selection microcomputer 20 notifies the front display 26 of the information signal. Show channels.

Referring to FIG. 5A, the remote controller 22 has a channel up key 22a and a channel down key 22 on the surface thereof.
b and numeric keypad 22c, BS key and CA
A BS / CATV key 22d, which is a combination of TV keys, is provided. In addition, referring to FIG. 2, data and the like for the terrestrial channel, CATV channel and BS channel are written in memory 24. That is, the real channel data and the fine adjustment data for each of the terrestrial channel (1 channel to 62 channel) and the CATV channel (c13 channel to c35 channel) are written for every two addresses from address 00 to 169. Further, the terrestrial wave and the CATV station bit are written between the addresses 170 to 180, and the address 18
The BS local bit is written in 1. Address 1
Other VTR adjustment data are written in 82 to 255. Of note are the terrestrial, CATV and BS local bits for addresses 170-181,
As shown in FIG. 3, skip information of each channel is assigned here for each bit. That is, "0" is written in the channel that does not show the image because the BS antenna is not connected or the CATV reception contract is not made.
"1" is written in the channel in which the image is displayed. Therefore, channel up / down keys 22a and 22b
When a channel with a local bit = 0 is selected by operating, the channel is skipped. In addition,
The skip information is set in advance by the user.

The processing operation of the channel selection microcomputer 20 will be described with reference to FIG. First, in step S1, B
When the S / CATV key 22d is turned on, step S3
At, it is determined whether skip information is set for all channels of CATV. Then, if "YES", the BS / CATV key 22 is again pressed in step S5.
It is determined whether or not d is turned on, and if "NO", it is determined in step S7 whether or not the ten key 22c is turned on. Here, if "NO", the process returns to step S5, but if "YES", the BS channel designated in step S9 is selected and the process ends. Step S
If "NO" is determined in step 3, it is determined in step S11 whether the BS / CATV key 22d is turned on again. If "NO", it is determined in step S13 whether the numeric keypad is turned on. If "NO" here, the process returns to step S11, but if "YES", the CATV channel designated in step S15 is selected and the process ends. Note that steps S5 and S11
When it is determined to be "YES" in step S13, the process proceeds to steps S13 and S7, respectively.

In operation, when skip information is set for all channels of CATV in the memory 24, the operator turns on the BS / CATV key 22d,
Then, when you operate the numeric keypad, the tuning microcomputer 20
When it is judged that the channel has been selected, the BS tuner 14 is tuned to select a desired BS channel, and at the same time, the BS tuner 14 is sent to the signal switching circuit 16.
The control signal is output so as to select the control signal from. However, if the ten key 22c is operated after the BS / CATV key 22d is turned on twice, the channel selection microcomputer 20 is set to CA.
When it is determined that the TV channel has been selected, a channel selection signal is output to the terrestrial tuner 12 so as to select a desired CATV channel. At the same time, a control signal is output to the signal switching circuit 16 so that the video signal from the terrestrial tuner 12 is output. As a result, the video signal of the designated channel is given to the video processing circuit 18.

On the other hand, skip information is set for some channels of CATV in the memory 24, or CAT is set.
When the operator turns on the BS / CATV key 22d when the skip information is not set for any of the V channels and then operates the ten key 22c, the tuning microcomputer 20 determines that the CATV channel has been selected,
A channel selection signal is output to the terrestrial tuner 12 so as to select a desired CATV channel. However, when the numeric keypad 22c is operated after the CATV key 22d is turned on twice, the tuning microcomputer 20 determines that the BS channel has been selected and outputs a tuning signal to the BS tuner 14.

According to this embodiment, since the tuning microcomputer 20 sets the reception mode based on the skip information written in the memory 24, the BS key and the CATV key can be combined into one, and the remote controller 22 can be controlled. The number of keys provided can be reduced. Also, BS / CAT
Since the reception mode can be switched by pressing the V key 22d twice, no trouble occurs when selecting a channel.

In this embodiment, the remote controller 22 is used for explanation, but the present invention is not limited to this case and can be applied to the case of operating a front switch to select a channel. Although the video tape recorder 10 is used in this embodiment, the present invention is not limited to this case and can be applied to a television receiver. Furthermore, in this embodiment, the channel information is displayed on the front display 26, but the present invention is not limited to this case and can be applied to the case where the channel information is displayed on-screen.

Further, according to the present invention, the predetermined reception mode is set by judging whether or not the skip information is set for all channels of the CATV, but the present invention is not limited to this case, and all the receiving modes are set. Of course, the present invention can be applied to the case of determining whether skip information is set in the BS channel and setting a predetermined reception mode. In this case, in step S3 of FIG.
It is necessary to judge whether or not the skip information is set in the S channel.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is an illustrative view showing a part of the embodiment in FIG.

FIG. 3 is an illustrative view showing a part of the embodiment in FIG. 1;

FIG. 4 is a flowchart showing a part of the operation of FIG. 1 embodiment.

5A is an illustrative view showing a part of the embodiment in FIG. 1, and FIG. 5B is an illustrative view showing a conventional technique.

[Explanation of symbols]

10… Video tape recorder 12… Terrestrial tuner 14 ... BS tuner 20 ... Tuning microcomputer 22 ... Remote control 24 ... Memory

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Claims (6)

(57) [Claims] 1. A tuning device having a BS tuner, a CATV tuner, and a terrestrial tuner, which selects a channel in accordance with a tuning request, a memory in which skip information of at least the BS station and the CATV station is written, BS / CATV Requesting means for requesting setting of the receiving mode; searching means for searching the skip information written in the memory in response to the setting request from the requesting means; and BS receiving mode and CATV according to the search result by the searching means. A tuning device comprising a setting means for setting one of the reception modes. 2. The setting means includes a BS setting means for setting the BS reception mode when skip information is written for all the CATV stations as a result of searching by the searching means. Tuning device. 3. The setting means includes a CATV setting means for setting the CATV reception mode when skip information is written for all the BS stations as a result of searching by the searching means. Tuning device. 4. When the setting request is made a plurality of times consecutively,
4. The mode switching means for switching the reception mode each time the setting request is made from the second time onward.
The described tuning device. 5. A television receiver comprising the channel selection device according to any one of claims 1 to 4. 6. A video tape recorder comprising the channel selection device according to claim 1.