JPH07131727A - Television receiver - Google Patents

Abstract

PURPOSE:To provide the television receiver able to select a desired broadcast quickly with a simple operation same as the sequential channel selection even when lots of receptible broadcast stations are in existence. CONSTITUTION:When a remote control key analysis section 31 judges that a first channel up/down key is depressed, a 1st channel up/down section 34 conducts sequential channel selection by a predetermined channel number. Then the sequential channel selection is stopped and a channel number is displayed while increasing or decreasing the channel number setting at a high speed to conduct the channel up/down operation at a high speed by which a received channel number is selected. Even when lots of receptible broadcast stations are in existence, a desired broadcast is selected simply and quickly and the operability is considerably improved by combining the sequential channel selection and the high speed channel up/down operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a television (T) that can quickly select a desired broadcast by a simple operation similar to sequential selection even in a region where there are many receivable broadcasts.
V) Regarding the receiver.

[0002]

2. Description of the Related Art As a channel selection method performed by a user, a method of directly inputting a desired channel (CH) with a ten-key pad and presetting with a channel up key (up key) or a channel down key (down key) are used. There is a sequential channel selection method in which existing channels are sequentially selected and a desired channel is selected.

FIG. 8 shows a block diagram centering on a channel selection control section of a conventional television receiver, and the channel selection operation will be described in order.

When the channel up key or the channel down key of the remote controller 8 is pressed, a signal is transmitted from the remote controller 8 and is received by the remote controller light receiving section 7 on the TV receiver main body side. The signals received by the remote control light receiving unit 7 are sequentially processed by the tuning control device 10 (made up of a microcomputer or the like) for tuning. Then, the tuning control device 1
0 sends a tuning control signal to the tuner 2 to sequentially perform tuning, and at the same time, causes the video processing circuit 4 to perform OSD (on screen).
en display) signal is sent, and the channel number currently received is displayed on the CRT 5. Further, the channel selection control device 10 also performs the same processing as when inputting with the remote controller 8 when the channel up / channel down is input in the key input unit 6 on the TV receiver main body side.

The channel selection control device 10 includes a remote control code analysis section 11, a key code analysis section 12 for analyzing a key input on the main body side, a channel up / down section 13, a channel selection section 14,
The OSD processing unit 15 and the timer 16 are included.
The operation of each unit will be described with reference to the flowchart of FIG. 9 showing the processing procedure of the tuning control device 10.

In FIG. 9, first, steps 102 and 1 are performed.
In 04, it is determined whether or not the channel up key or the channel down key is pressed (performed by the remote control code analysis unit 11 and the key code analysis unit 12). If neither key is pressed, the process returns to the start of step 101.

If it is determined in step 102 that the channel up key is pressed, the channel up process of step 103 is performed. Channel down in step 104
When it is determined that the key has been pressed, the channel down process of step 105 is performed. Channel up / do
The process of wn is performed in the channel up / down unit 13, and in the process, the reading of the channel preset data set in the EEPROM (electrically erasable / rewritable read-only memory) 9 and the current channel number Performs setting and tuning / OSD data settings. (In short, a process for receiving a channel preset one channel above or one channel below the previous reception channel is performed.)

Next, step 103 or step 10
A tuning control signal is sent to the tuner 2 by the tuning process of step 106 (processed by the tuning unit 14) based on the tuning data set in step 5 to select the current channel (one more than the previous reception channel). Channel selection that is preset to the upper side or one lower side. In addition, based on the OSD data set in step 103 or step 105, the OSD processing of step 107 (processing by the OSD processing unit 15) sends the OSD display signal of the current channel to the video processing circuit 4 to set the channel number. It is displayed on the CRT 5 at the same time as the received program. Then, step 108
By the WAIT processing of step 1, the reception of the current channel and the display of the channel number are maintained for a predetermined time (for example, about 0.8 seconds), and the process returns to step 102. The predetermined time is measured by the timer 16.

Then, when the process returns to step 102,
If the channel up key or the channel down key is not pressed, the reception of the current channel is continued,
If the channel up key or the channel down key is kept pressed, the stations are selected sequentially at 0.8 second intervals.

The WAIT processing of step 108 may be performed before the channel selection processing of step 106.

[0011]

Sequential channel selection is convenient when selecting channels while checking the program content of each broadcasting station.
However, in the above-mentioned sequential tuning with a constant speed (in the above example, at intervals of 0.8 seconds), it takes too much time to search for a desired broadcasting when there are many receiving stations ( For example, there is a case where the channel currently being received is away from the desired channel), which is inconvenient.

Even if there are a large number of broadcasting stations that can be received, the desired broadcasting can be immediately viewed by directly inputting the channel number of the desired broadcasting with the ten keys instead of sequentially selecting channels. However, in direct input with the numeric keypad, 10 keys are used instead of two keys such as channel up / down.
Since it is necessary to operate each key, the eyes must be moved from the screen to the remote controller to operate, which is troublesome.
In particular, when the room is dark, it is inconvenient to operate the numeric keypad while checking the positions of the keys on the remote controller. Further, in the ten-key input, it is necessary to remember the channel number accurately, and it is troublesome to remember the channel number accurately when there are a large number of broadcasting stations that can be received.

Therefore, the present invention provides a television receiver capable of quickly selecting a desired broadcast by a simple operation similar to sequential selection even when there are a large number of broadcast stations that can be received. Has an aim.

[0014]

In order to solve the above problems, the present invention provides a channel in which the preset channel number is sequentially increased or decreased in accordance with the operation of the input key to set the current channel number. up / d
Data of the set channel number is supplied from the down control unit (corresponding to 33 in FIG. 1) and the channel up / down control unit, and the tuner unit is made to perform tuning with the set channel number. Station control unit (3 in FIG. 1)
5) and a screen display processing unit (36 in FIG. 1) for supplying the data of the set channel number from the channel up / down control unit and displaying the set channel number on the screen. In a television receiver having a channel selection function, the channel up / do
The wn control unit sequentially tunes a predetermined number of channels according to the operation of the input key, and then supplies a signal to the tuned control unit to stop the sequential tune operation, and at the time of sequential tune A channel up / down control unit (9, 31, 3 in FIG. 1) that performs a high-speed channel up / down operation that sequentially sets the current channel number at a faster speed.
2, 34, 37) and a television receiver.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the TV receiver of the present invention, when the channel up key or the channel down key is kept pressed, a predetermined number of broadcasting stations are sequentially tuned and then the channel numbers are sequentially displayed as up / down. , By stopping the channel selection process by switching the channel, the speed of the channel up / down is increased so that a desired broadcast can be quickly selected.

FIG. 1 shows a block configuration of an essential part of an embodiment of the present invention. The same parts as those in the conventional example are designated by the same reference numerals, and the description of those parts will be omitted.

In this embodiment, the remote controller 28 has a slow channel up key and a slow channel down key (hereinafter sometimes referred to as slow channel up / down key), and a first channel up key and a first channel dow key (hereinafter first channel up).
/ Down key). These four types of keys may be provided individually, or the slow channel up may be used to reduce the number of keys and simplify the operation.
The key and the slow channel down key may be one seesaw key, and the first channel up key and the first channel dow key may be one seesaw key.
It is also possible to use two keys, a channel up key and a channel dow key, and switch between slow and fast modes depending on the strength with which they are pressed. A key having the same function as that provided on the remote controller 28 is also provided on the key input unit 26 on the TV receiver main body side.

With the slow channel up / down key, the channel selection (OSD display of channel selection and channel number) is performed sequentially at a low speed (0.8 seconds at the same speed as the conventional one). This is the first control mode. First channel up /
With the down key, after performing sequential channel selection (channel selection and OSD display of channel number) for a predetermined channel at medium speed (0.4 second interval), channel up / down is performed at high speed (0.25 second interval). Only (that is, only channel number setting and OSD display up / down are performed without performing channel selection by switching channels). This is the second control mode. At high speeds such as 0.25-second intervals, the tuner part cannot receive stable reception, and humans often cannot confirm the program content. Therefore, only channel numbers up / down can be selected without performing sequential channel selection. Is enough.

In this embodiment, the period of sequential channel selection from the medium speed to the high speed is set to 15 channels as an example. In addition, when the channel is up / down at high speed, the picture of the CRT 5 is set to black by applying picture mute to make it easy to see the display of the channel number that changes at high speed (the color of the screen during picture mute may be another color). .

After increasing the speed, check the channel numbers displayed on the CRT while the numbers are changing sequentially, and if you release the up / down key at the specified channel number, the reception will be the channel number when the key was released. Done. next,
If the channel up / down key of the fast or slow is pressed, the channel selection is restarted sequentially.

As described above, in this embodiment, in addition to the sequential selection as in the conventional case, the first channel up / down is selected.
By continuing to press the key, the channel selection process can be stopped and only the channel up / down can be performed at high speed (channel number setting and OSD display up / down only). Therefore, the following tuning operation becomes possible.

For a certain number of channels, the desired broadcast is searched while checking the contents of the broadcast program by sequentially selecting the channels. If the desired broadcast cannot be found by the sequential selection, the high-speed channel up / down mode is set. For example, only channel numbers are up or down for 50 channels. Then, it is possible to sequentially tune again from the channel numbers that are up or down for 50 channels and search for a desired broadcast.

Further, the operation of the sequential channel selection and the channel up / down at high speed is performed by the first channel u.
It can be operated by two key operations of p / down (slow channel up / down
It can be performed by operating up to 4 keys by adding 2 keys of n)
Therefore, you can operate while looking at the screen without moving your eyes from the screen to the remote control.

Further, although the channel number of the desired broadcasting station is not exactly remembered, if one remembers how many channels are in the vicinity, the same first channel up / down key as the station selection can be sequentially used without using the ten keys. The selected channel can be quickly moved to near the channel number of the desired broadcasting station by operation.

As described above, according to the present embodiment, not only the sequential channel selection operation but also the channel number can be quickly increased or decreased.
High-speed channel up / down operation that can sequentially display while wn and select the channel number to be received,
Since it can be performed with the same simple operation as sequential tuning, even if there are many broadcasting stations that can be received, the desired broadcasting can be easily and quickly selected by combining sequential tuning operation and high-speed channel up / down operation. The operability is greatly improved.

Next, the tuning control device 20 for performing the above tuning operation will be described. Tuning control device 20
As shown in FIG. 1, a remote control code analysis unit 31, a key code analysis unit 32 that analyzes a key input on the main body side, a channel selection unit 35, an OSD processing unit 36, and a timer 37, which are the same as those of the related art.
And a slow channel up / down section 33 corresponding to the conventional channel up / down section 13 and a fast channel up / down section 34 newly provided this time.

A large flow of the processing procedure of the tuning control device 20 is shown in the flowchart of FIG. Step 20 of FIG.
2, step 204, step 206, step 208
Then, it is determined whether or not the slow channel up / down key and the fast channel up / down key are pressed (determined by the remote control code analysis unit 31 and the key code analysis unit 32).

When a key is pressed, the slow channel up process of step 203 and the slow channel do of step 205 are subroutines of the process corresponding to each key.
wn processing, first channel up in step 207
Processing, first channel down in step 209
The process is performed and the process returns to step 202. If there is no key input, it is determined in step 210 whether or not the state immediately before the state where no key is input is the state in which one of the keys of the channel up / down has been pressed. Then, when it is determined that the state where there is no key input is the state where the key is pressed (the state is called the key OFF state), the channel up / down key OFF processing (step 211) is performed. , And then returns to step 202. If it is determined to be in another state, the process returns to step 202 without passing through step 211.

Next, each subroutine will be described.
First, FIG. 3 shows a flowchart of the slow channel up process. This is the same process as the conventional sequential channel selection, and the channel up process of step 301 is performed by the slow channel up / down unit 33.
Read channel preset data set in ROM9, set current channel number, tune / O
Set data for SD. (In short, a process for receiving the channel preset one above the previous reception channel is performed.)

On the basis of the tuning data set in step 301, a tuning control signal is sent to the tuner 2 by the tuning process of step 302 (processing by the tuning section 35) to select the current channel (previous reception channel). Select the channel that is preset to the upper side by one). Further, based on the OSD data set in step 301, the OSD processing of step 303 (processing by the OSD processing unit 36) sends the OSD display signal of the current channel to the video processing circuit 4 and sets the channel number as the received program. At the same time, it is displayed on the CRT5. After that, WA in step 304
By the IT process, the reception of the current channel and the display of the channel number are maintained for a predetermined time (for example, about 0.8 seconds), and the process returns to the main routine. The timer 37 measures the predetermined time. When the slow channel up key is continuously pressed, steps 301 to 304 are repeated.

The WAIT processing of step 304 may be performed before the channel selection processing of step 302.

FIG. 4 is a flowchart of the slow channel down process. This will dow the channels sequentially
Since the processing is the same as the slow channel up processing described with reference to FIG.

In the sequential channel selection of the slow channel up / down processing, since the switching speed of the channel selection is low,
You can tune in while checking the broadcast content sufficiently.

Next, the subroutine of the first channel up processing, which is a characteristic part of this embodiment, will be described with reference to the flowchart shown in FIG.

First, in step 501, channel up processing (same as in slow channel up, EEPROM 9
Read out the channel preset data set to, set the current channel number, and set data for channel selection / OSD). This is the first channel u
This is performed in the p / down section 34.

In step 502, the first channel u
Count the number of times p (first channel up
/ Down unit 34). In step 503, it is determined whether or not this count exceeds 15 (that is, whether or not 15 channels have been sequentially selected), and a medium speed sequential selection process or a high speed channel up / down is performed. The process is branched. If the count number is 15 or less, the medium-speed sequential channel selection processing mode is set, and the process proceeds to step 504. If the count number exceeds 15, the high-speed channel up mode is set and the process proceeds to step 505.

In the medium speed sequential channel selection processing mode, channel selection is performed in step 504, and OSD processing is performed in step 506. The channel selection process and the OSD process are the same as those in the slow channel up described above.

In the high-speed channel up mode, only channel up processing is performed without performing channel selection processing, so picture MUTE is performed in step 505, and step 506 is performed.
The OSD process for displaying the channel number is performed. The picture MUTE in step 505 is performed to make it easy to see the display of the channel number that changes at high speed (at intervals of 0.25 seconds). Is black.

In the next step 507, step 503
The same judgment as in step 508 and step 509 is performed.
WAIT for sequential channel selection and channel up processing
The process is performed and the subroutine ends. If the first channel up key is continuously pressed, steps 501 to
509 is repeated.

The processing of steps 502, 503 and 507 is performed by the first channel up / down section 34.

The WAIT processing in step 508 may be performed before step 504.
WAIT processing may be performed between step 505 and step 506.

The reason why the picture MUTE is applied at the time of high-speed channel up / down has another reason in addition to the reason that the channel number display which changes at high speed (interval of 0.25 seconds) is easy to see.
This is because the high-speed channel up / down is stopped because the channel selection is sequentially stopped during the high-speed channel up / down.
At the time of n, the tuner unit receives the broadcast received by the sequential channel selection immediately before moving to the high-speed channel up / down. When the broadcast received without the picture MUTE is displayed on the screen, the OSD Change the displayed channel number
This is to prevent misunderstanding that it is the channel number of the broadcast currently displayed on the screen.

FIG. 6 is a flow chart of the first channel down process. This process is the same as the first channel up process described with reference to FIG. 5 except that the channels are sequentially downloaded, and therefore the description thereof is omitted here.

By combining the medium speed sequential tuning operation and the high speed channel up / down operation as described above, even if there are many receivable broadcasts, the desired broadcast can be easily and quickly selected. , Operability is greatly improved.

Next, channel up / down key OF
The F processing subroutine will be described with reference to the flowchart of FIG. This channel up / down key O
FF processing can be performed by sequentially selecting channels or high-speed channel up / d
This is processing when the key is released from the state in which the down operation is being performed, that is, the state in which the slow or fast channel up / down key is pressed.

First, step 701 and step 702.
Then, it is determined whether the fast channel up / down key is released or the slow channel up / down key is released (determined by the remote control code analysis unit 31 and the key code analysis unit 32). Slow channel up / dow
If the n key is released, the key is turned off in step 706.
Process, and channel up / down in step 707
Count number (step 501 in FIG. 5, step 6 in FIG. 6)
(Count number of 02) is cleared and the subroutine is ended. The key-OFF process of step 706 is a process of continuing the reception on the channel finally designated by the channel up / down key and stopping the OSD display of the channel number after a predetermined time.

In step 707, the number of counts is cleared from the medium speed sequential tuning operation to the high speed channel up / up.
The timing of switching to the down operation is always constant (that is, switching is always performed for 15 channels)
This is because.

When the first channel up / down key is released, it is determined in step 703 whether the operation is a medium speed sequential channel selection operation or a high speed channel up / down operation. This is step 503 of FIG.
The processing is the same as step 603 in FIG. If it is determined that the medium-speed sequential tuning is performed, the key-OFF process of step 706 and the channel up / up of step 707 are performed.
The down count number is cleared and the subroutine ends.

In step 703, the high-speed channel up /
If it is determined that the down operation has been performed, step 7
04 channel selection processing (performed by channel selection section 35), step 705
The OSD processing of (1) is performed (performed by the OSD processing unit 36), and the processing ends through steps 706 and 707.

The above steps 703 and 707 are performed in the first channel up / down section 34. Step 7
06 key OFF processing, slow channel up / do
wn section 33, first channel up / down section 3
4, the channel selection section 35, and the OSD processing section 36.

In the OSD processing of the above embodiment, only one channel number is displayed while up / down, but a plurality of channel numbers may be sequentially displayed at the same time. Examples of the simultaneous display include a shift display and a scroll display. 10 and 11 show an example of vertical shift display, FIG. 12 shows an example of vertical scroll display, and FIG. 13 shows an example of horizontal scroll display. Among a plurality of channel numbers displayed at the same time, the channel number currently being received at the time of channel selection and the high-speed channel up /
The channel number set as the current channel at the time of down may be displayed in a different color from the other channel numbers so as to be distinguished from other channel numbers, and may be displayed with a cursor. At the same time as the channel number, information such as the broadcast station name and broadcast content of the channel number may be displayed together. (Information such as broadcasting station name and broadcasting contents is EE as well as channel preset data.
It is stored in the PROM 9. )

An example of the vertical shift display shown in FIGS. 10 and 11 will be described. FIG. 10 shows a display state at the time of high-speed channel up, and is an example in which picture MUTE is applied, the entire screen is displayed on a white background, and the channel number is displayed together with the broadcasting station name. FIG. 11 shows not the entire screen but only the channel display portion, and shows the transition state of the shift display (a state in which channels are sequentially turned up in the direction of (A) → (D) in the figure). The channel number set as the current channel has a back color portion of a color different from other channel numbers. The back collar portion moves downward one by one according to the speed of the high-speed channel up (the speed of sequential tuning when sequentially tuning). As shown in FIG. 11, starting from 4CH, the back color part is shifted to 6CH and 8CH, and when the back color part is shifted to the bottom channel number of one channel list, the channel list is renewed and the back color is changed. The section shifts to the top channel number in the new channel list. When the channel is down, the reverse operation is performed.

The broadcasting station name information is stored in the EEPROM 9 shown in FIG. 1 similarly to the channel preset data, and the slow channel up / down section 33, the first channel up / down section 34, and the OSD processing section 36 are stored.
To read the necessary data from the EEPROM 9,
Create a channel list, display the channel list,
Controls the movement of the back color part and the update of the channel list.

Since picture MUTE is canceled at the time of sequential channel selection, the broadcast currently being received on the channel is displayed on the screen, and the same channel number as when the high speed channel up / down is displayed on the screen. The display is done.

Next, the vertical scroll display shown in FIG. 12 will be described. Similar to FIG. 11, FIG. 12 also shows only the channel display portion instead of the entire screen and shows the transition state of scroll display (a state in which channels are sequentially turned up in the direction of (A) → (D) in the figure). The back collar portion showing the channel number set as the current channel is fixed to the central portion, and the channel number scrolls upward or downward by one channel at a time. The scrolling speed depends on the speed of sequential channel selection and the speed of the high-speed channel up / down.

Similar to the above-mentioned vertical shift display and vertical scroll display, horizontal shift display and horizontal scroll display are also possible. FIG. 13 shows an example of left and right scroll display. In the state where the channels are sequentially turned up in the direction of (A) → (D) in the figure, the back collar portion showing the channel number set as the current channel is fixed to the central portion. When the channel is up, the channel number display moves to the left, and when the channel is down, it moves to the right.

As another channel number display state, a state in which all preset channel numbers are displayed on one screen or a plurality of screens and the cursor moves between channel numbers can be considered.

As described above, if a plurality of channel numbers are sequentially displayed at the same time, the relationship between the currently set channel number and the preceding and succeeding channel numbers can be known and the channel selection becomes easier. Especially when there is a gap between preset channel numbers (for example, if there are 30 channels next to 18 channels), if up / down is repeated for each display, the currently set channel number will be displayed. It may not be known where in all channels is located, but such inconvenience is eliminated by displaying a plurality of channels simultaneously. In addition, when displaying multiple channels at the same time, you can select a channel while checking the channel number to move to in advance, so you can easily select a channel without passing through it even if you up / down the channel number at high speed. Therefore, it is possible to achieve both high-speed display of channel numbers up / down and easy selection of channels.

Further, in the above embodiment, the video mute is applied during the high-speed channel up / down operation, but the broadcast received immediately before the transition to the high-speed channel up / down operation is directly displayed on the screen. May be. Furthermore, a method of displaying the broadcast by adjusting the image quality such that the brightness is slightly lowered to make the channel display easy to see, a method of storing the received broadcast in a memory and displaying it as a still image, and the like can be considered.

Further, in the above-described embodiment, two modes are provided: a mode in which the sequential channel selection is always performed at a low speed, and a mode in which the medium-speed sequential channel selection automatically shifts to the high-speed channel up / down operation. However, it is possible to provide only a mode in which sequential channel selection automatically shifts to high-speed channel up / down operation, or a mode in which continuous channel selection is always performed and a mode in which always high-speed channel up / down operation is performed. The two modes may be provided. The speed of sequential channel selection in each case may be gradually increased (or decreased) for each channel selection of a predetermined number of channels. In addition, the speed of the sequential tuning in the continuous sequential tuning mode and the speed of the sequential tuning in the mode of automatically shifting to the high-speed channel up / down operation are as follows.
The speed of the sequential tuning in the constant sequential tuning mode is slower, but the speed of the two sequential tunings may be the same.

[0061]

As described above, the TV receiver of the present invention displays not only the sequential channel selection operation but also the channel number setting while stopping the sequential channel selection and rapidly increasing or downing the channel number setting. A high-speed channel up / down operation capable of selecting a channel number to be received is provided. The high-speed channel up / down operation can be performed by a simple operation using only the channel up / down keys, which is the same as in the case of sequential channel selection. Therefore, the TV receiver of the present invention can perform the channel selection operation at high speed and the high-speed channel up / do even if the number of broadcasting stations that can be received is large.
By combining wn operation, the desired broadcast can be selected easily and quickly, and the operability is greatly improved.

As described in claim 2, a mode of always performing sequential channel selection and a high-speed channel up / down from sequential channel selection
For those having two modes, that is, a mode for switching to the operation, it is possible to select which mode to tune in to in accordance with the use situation, and the channel selection method is widened and the operability is improved.

As described in claim 3, the speed of the sequential tuning in the mode in which the sequential tuning is switched to the high-speed channel up / down operation is faster than the speed of the sequential tuning in the mode in which the sequential tuning is always performed. If you make it faster, you can see at a glance which mode you are in during sequential tuning operation, and you can select the speed of sequential tuning according to the usage situation,
The usability is improved.

As in claim 4, the high speed channel up
The one that can adjust the screen state during the / down operation can make it easy to see the channel number whose display changes at high speed, and the usability is further improved.

According to the present invention, a plurality of channel numbers are displayed at the same time, and information indicating which of the plurality of channel numbers is the current channel number is currently set. The relationship between the channel number and the channel numbers before and after it can be understood, and the channel selection becomes easier. With simultaneous display of multiple channels, channel selection operation can be performed while checking the channel number to shift to in advance, so even if the channel number is up / down at high speed, the desired channel does not pass and the high-speed channel number It is possible to achieve both up / down display and easy tuning.

[Brief description of drawings]

FIG. 1 is a diagram showing a block configuration of an embodiment.

FIG. 2 is a diagram showing a flowchart for explaining the operation of the embodiment.

FIG. 3 is a diagram showing a subroutine of slow channel up processing.

FIG. 4 is a diagram showing a subroutine of slow channel down processing.

FIG. 5 is a diagram showing a subroutine of a first channel up process.

FIG. 6 is a diagram showing a subroutine of first channel down processing.

FIG. 7 is a diagram showing a subroutine of channel up / down key OFF processing.

FIG. 8 is a diagram showing a block configuration of a conventional example.

FIG. 9 is a diagram showing a flowchart for explaining an operation of a conventional example.

FIG. 10 is a diagram showing an example of simultaneously displaying a plurality of channel numbers.

FIG. 11 is a diagram showing a state in which channel numbers are displayed in a vertical shift display.

FIG. 12 is a diagram showing a state in which channel numbers are scrolled up and down.

FIG. 13 is a diagram showing a left-right scroll display state of channel numbers.

[Explanation of symbols]

 1 Antenna 2 Tuner 3 Intermediate Frequency Amplifier Circuit 4 Image Processing Circuit 5 CRT 9 EEPROM 20 Channel Selection Control Device 26 Key Input Section 27 Remote Control Light Receiver 28 Remote Control 31 Remote Control Code Analysis Section 32 Key Code Analysis Section 33 Slow Channel Up / Down Section 34 First channel up / down section 35 Channel selection section 36 OSD processing section 37 Timer

Claims (5)

[Claims] 1. A channel up / down for sequentially increasing or decreasing a preset channel number in accordance with an operation of an input key to set a current channel number.
A control unit, a channel selection control unit that is supplied with the data of the set channel number from the channel up / down control unit, and causes the tuner unit to tune to the set channel number; A television receiver, which is supplied with data of the set channel number from a down control unit and has a screen display processing unit for displaying the set channel number on a screen, and which has a sequential channel selection function. The up / down control unit sequentially tunes for a predetermined number of channels according to the operation of the input key, and then supplies a signal for stopping the sequential tuning operation to the tuning control unit as well as the sequential selection. High-speed channel up / down that sequentially sets the current channel number at a speed faster than the local time channel up /
A television receiver having a down control section. 2. The television receiver according to claim 1, wherein the channel up / down control unit performs a first control mode in which the channels are always selected sequentially, and the channels are sequentially selected for the predetermined number of channels. And a second control mode in which the high-speed channel up / down operation is performed after the operation, and a channel up / down control unit that switches between the two control modes according to an operation of an input key is used. Television receiver. 3. The television receiver according to claim 2, wherein the speed of sequential channel selection in the first control mode is made slower than the speed of sequential channel selection in the second control mode. Characteristic television receiver. 4. The television receiver according to any one of claims 1 to 3, wherein the channel up / down controller sets a normal screen state during the high-speed channel up / down operation. A television receiver characterized in that it is in a state different from the display state of the received video. 5. The television receiver according to any one of claims 1 to 4, wherein the channel up / down control unit is preset at the same time as the current channel number to be set. A plurality of channel numbers adjacent to the current channel number among the existing channel numbers, and information indicating which of the current channel number and the plurality of adjacent channel numbers is the current channel number. Is controlled so that the screen display processing unit displays it on the screen.