JPH11127489A - Electronic equipment having outside inputting function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a key operation for switching to an outside input without providing any exclusive outside input switching key. SOLUTION: This is an electronic equipment having an outside input function equipped with an RAM 7 having a channel storage area corresponding to each key signal of a direct channel key provided at a remote transmitter 20. In this case, an outside input is set in a channel storage area corresponding to one of empty keys among the direct channel keys of the remote transmitter 20 so that one of the empty keys of the remote transmitter 20 can be used as an outside input switching key.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic apparatus having an external input function having a channel storage area corresponding to each key signal of a direct channel key provided in a remote control transmitter. The present invention relates to an electronic device having an external input function that simplifies an operation of switching to an external input without providing a special key on a remote control transmitter.

[0002]

2. Description of the Related Art In electronic devices such as a television having an external input function, a video cassette recorder, and a television with a built-in video (so-called televideo), a dedicated external input switch for switching the display of a television screen to an external input has conventionally been used. A key is provided on a remote control transmitter (this is referred to as Conventional Technique 1). In other words, by pressing the external input switching key of the remote control transmitter, the television screen is switched from, for example, the transmission video of the broadcasting station of the channel that was being viewed to the external input screen (for example, a video input screen). I have.

An electronic device having a structure in which such a dedicated external input switching key is omitted has also been proposed (this is referred to as prior art 2). In the prior art 2, when the external input is switched using the remote control transmitter, the following operation is performed.

That is, first, a direct channel key, for example, the twelfth key which is the maximum channel is operated,
Next, by operating the channel up key once, the television screen is switched to the external input screen. Alternatively, by operating the first key, which is the minimum channel, and then operating the channel down key once, the television screen is switched to the external input screen.

[0005]

However, in the electronic device of the prior art 1, since the remote control transmitter has a dedicated external input switching key for switching to an external input, the number of keys increases accordingly (that is, the number of keys increases). And the number of parts increases), and the arrangement of each key on the operation panel of the remote control transmitter is restricted accordingly.
Further, in the electronic device of the related art 2, although the problem of the related art 1 is solved, since the number of key operations for switching to the external input is large, the operation is complicated.

The present invention has been made to solve such a problem, and has as its object to provide a dedicated external input switching key and to simplify the key operation for switching to an external input. Another object of the present invention is to provide an electronic device having an external input function.

[0007]

In order to solve the above-mentioned problems, an electronic apparatus having an external input function according to the present invention has a channel storage area corresponding to each key signal of a direct channel key provided in a remote control transmitter. An external input is set in the channel storage area corresponding to one of the empty keys in the direct channel key of the remote control transmitter, whereby one of the empty keys of the remote control transmitter is externally input. It is used as a switching key.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an electrical configuration of an electronic device having an external input function according to the present invention. In this embodiment, an example in which the present invention is applied to a television is shown.

That is, the antenna 1 for receiving the broadcast wave of each broadcasting station is connected to a tuner circuit 2 for selecting a desired channel from the received broadcast wave, and the tuner circuit 2 transmits the video signal of the selected channel. A video signal processing system 3 for detecting and amplifying, and an audio signal processing system 4 for detecting and amplifying an audio signal of a selected channel are connected to each other. The video signal processing system 3 is connected to a receiver 5, and the audio signal processing system 4 is connected to a speaker 6. The tuner circuit 2, the video signal processing system 3, and the audio signal processing system 4 are bidirectionally connected to a system controller 7 that controls the entire device.

The system controller 7 has an RO
The M8 and the RAM 9 are connected, and a receiving unit 10 for receiving a key signal from the remote control transmitter 20 is connected via an input interface unit 11. Further, the system controller 7 is configured such that an output of a key input unit 12 having various function keys (for example, a power key, a channel up / down key, a volume key, etc.) provided on a front surface of the device body is led. ing.

In addition to the operation program, the ROM 8 stores channel setting data for setting the channel of each broadcasting station corresponding to each direct channel key of the remote control transmitter 20. This channel setting data is a database (preset information) for realizing this function in a case where a channel preset by inputting a region code has a function of being automatically assigned from the 1st key to the 12th key. In the case of a device having an automatic channel assignment function of automatically switching channels in order and automatically assigning currently receivable channels from the 1st key to the 12th key, this function is implemented. Program data.

In this case, in the case where a channel is automatically assigned by inputting a region code, a database in which information of external input is added to the preset information may be stored in the ROM 8. In a program having an automatic channel assignment function, for example, after assigning a VHF broadcast, an external input is first assigned to a vacant key, and then a program for assigning a UHF broadcast to the remaining vacant keys is stored in the ROM 8. You should keep it.

The program may be programmed so that an external input can be manually assigned to any key from the first key to the twelfth key. The RAM 9 stores reception channel data set according to the channel setting data stored in the ROM 8. Therefore, when the direct channel key of the remote control transmitter 20 is operated thereafter, the broadcast wave of the channel corresponding to the key is received according to the reception channel data stored in the RAM 9.

The system controller 7 sets a reception channel corresponding to each of the direct channel keys based on the channel setting data stored in the ROM 8, and stores the set reception channel data in R.
Store it in AM9. Further, the system controller 7
When a key signal from the remote control transmitter 20 is received by the receiving unit 10 and inputted via the input interface unit 11, the receiving channel data stored in the RAM 9 is searched based on the key signal, and the corresponding key signal is retrieved. The tuner circuit 2 is controlled so as to receive the channel of the number.

FIG. 2 is a plan view showing the appearance of the remote control transmitter 20. Operation panel section 21 of remote control transmitter 20
Are direct channel keys 22, power key 23, channel up / down key 2
4, volume key 25, mute key 26, screen display key 27,
Various function keys such as a sleep key 28 are provided.

Next, in the television having the above configuration, each channel including an external input is assigned to the direct channel key 22.
An example of the operation to assign from the 1st key to the 12th key of
This will be described with reference to the flowchart shown in FIG. The flowchart shown in FIG. 3 illustrates a case where an external input is assigned to an arbitrary key by the automatic channel assignment function.

That is, when the automatic channel assignment function is activated, first, the reception channel is set to one channel and tuning is performed (steps S1 and S2).
At this time, if there is a broadcast wave on one channel, the key of number 1 is assigned to the one channel (step S).
3). On the other hand, if there is no broadcast wave in one channel, the receiving channel is set to 2 (step S4), and it is checked whether the set receiving channel does not exceed 12 (step S5). (Steps S2, S3, S4).

When such processing is repeated up to 12 channels, for example, in the Osaka area, the key number 2 of the direct channel key 22 is 2 channels, the key number 4 is 4 channels, the key number 6 is 6 channels, and the key number 8 is 8
, A channel number 10 is assigned to a key number 10, and a channel 12 VHF broadcast is assigned to a key number 12.

Thereafter, the vacant key numbers 1,
UHF broadcasts (channels 13 to 62) are sequentially assigned to 3, 5, 7, 9, and 11. In the present embodiment, first, an external input is assigned to key number 1 which is the minimum key among empty keys. (Step S6) Thereafter, UHF broadcasts are allocated in order from the smaller empty key. That is, tuning is performed by setting 13 channels (step S7). At this time, if there is a broadcast wave on channel 13, the key of number 3 which is the minimum key among the available keys at that time is assigned to channel 13 (step S8). On the other hand, if there is no broadcast wave on channel 13, the reception channel is set to 14 (step S9), and it is checked whether the set reception channel does not exceed 62 (step S10). (Steps S7, S8, S9).

If such processing is repeated up to 62 channels, for example, in the Osaka area, the channel number 19 of the direct channel key 22 and the key number 5
UH of channel 34 and key number 7 of channel 36
F broadcasts are respectively assigned.

FIG. 4 illustrates the allocation of R
The reception channel data stored in AM9 is shown. Therefore, when the user wants to switch the display screen to the external input screen, the first key of the direct channel key 22 of the remote control transmitter 20 may be pressed once. That is, when this key signal is received by the receiving unit 10 and input to the system controller 7 via the input interface unit 11, the system controller 7 transmits the received channel data stored in the RAM 9 based on the key signal. The external input corresponding to the key number 1 is searched for, and the display screen of the receiver 5 is switched to the external input screen according to the search data.

In the above embodiment, the case where the electronic apparatus of the present invention is applied to a television is described. However, the operation of a video cassette recorder or a television with a built-in video is the same as that of the above embodiment. The same is true. Further, in the above embodiment, the external input is assigned to the key number 1, but it is assigned to any of the empty keys after the VHF broadcast is assigned (for example, the key number 11 which is the largest empty key). The good thing is, of course.

[0023]

The electronic device having an external input function according to the present invention is an electronic device having an external input function having a channel storage area corresponding to each key signal of a direct channel key provided in a remote control transmitter. An external input is set in the channel storage area corresponding to one of the empty keys in the direct channel key of the remote control transmitter. One of the empty keys of the remote control transmitter can be used as an external input switching key. Can be. Therefore, it is not necessary to provide a dedicated key (external input switching key) for switching to an external input, so that the number of keys can be reduced by that amount, and the degree of freedom of arrangement of each key on the operation panel unit of the remote control transmitter can be reduced. Also improve. In addition, by using one of the empty keys in the direct channel key as an external input switching key, only one key operation for switching to the external input is required. It will improve.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an electric configuration of an electronic apparatus having an external input function according to the present invention, showing an example applied to a television.

FIG. 2 is a plan view of a remote control transmitter.

FIG. 3 is a flowchart illustrating an operation of assigning a channel including an external input to a key in an electronic device having an external input function according to the present invention.

FIG. 4 is a table showing an example of reception channel data stored in a RAM.

[Explanation of symbols]

 2 Tuner circuit 7 System controller 8 ROM 9 RAM 20 Remote control transmitter 22 Direct channel key

Claims (1)

[Claims] 1. An electronic device having an external input function provided with a channel storage area corresponding to each key signal of a direct channel key provided in a remote control transmitter, wherein an empty space in the direct channel key of the remote control transmitter is provided. An electronic device having an external input function, wherein an external input is set in the channel storage area corresponding to one of the keys, so that one of the empty keys of the remote control transmitter is used as an external input switching key.