JPS59146275A - Channel display device - Google Patents

Abstract

PURPOSE:To make easily the correspondence between a channel and a screen understood by displaying a channel number or a cathode-ray tube screen, changing the color of characters at automatic search and informing the storage of the channel to the user or its display. CONSTITUTION:When a control signal of automatic search is received by a microcomputer 4, a local oscillating signal is outputted to a channel selecting circuit 2 from a tuner 1. A local oscillating signal is frequency-divided and compared with a frequency-dividing output of a reference frequency oscillating signal and made coincident by using a PLL loop. The channel number is calculated from the frequency dividing ratio of the local oscillating signal and the microcomputer 4 outputs a data displaying the channel number to a character generator 9. When the search is started and the channel selection channel is stared for changing, the microcomputer 4 changes the data deciding the horizontal position of the displayed characters and moves the number displayed from the right to the left of the screen in response to the tuning volt age and the band. When a receiving signal is discriminated, the microcomputer 4 outputs a data changing the color of the display to the character generator 9 and after the information is stored in a storage device 3, the color is restored to the previous color and the next search is started.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention is used in a case where a television receiver having a search function displays channel numbers on both sides of the cathode ray tube of the receiver. The present invention relates to a channel display device.

Conventional configuration and its problems In conventional color television receivers, it is not possible to display the channel number when selecting a reach channel.
The device shown in Figure 1 is not shown in Figure 1. Riff -1- channel selection 1
1i), 3 indicates the selection/i+-3 data output from the microphone l-1 computer (hereinafter omitted) which is the control unit.
．． r? A memory device 4 outputs the channel selection data to the microcomputer 3.
controls the channel selection circuit 2 and storage device 3.
The computer 5 displays all the channel numbers and program numbers using the microcomputer 4.

The display section is composed of seven segment light emitting diodes (LEDs), 6 is an intermediate frequency tank 11J, 7 is an image intensifier [1], and 8 is a cathode ray tube.

The operation of this circuit when selecting the channel is as follows: At the same time as the channel starts, the data in the storage device 3 (tuned type [t, bunt information, etc.)]
Delete (2, then set band - fVHF low band (
7, the tuning voltage rises 1111 times from 20V).

At that time, the display unit 6 displays the channel number being selected at that time.The presence or absence of a received signal is determined for each channel using the total synchronization signal and AFC voltage. , if the received signal is 'L', the channel is in tune with the tuning type 1.
The date and evening of the channel selection, such as frequency and band information, are recorded in the device 3. These processes are performed by the microphone C1U and the computer 4 at the side.

7-f jir + control fully automatic 1, u, -1 all functions, electric power and bunt 1, auto-serve function. It is called. If there is an R signal during a quick search, when the 't' 4J is fixed, I turn on the station - I4 - and use the microcombi to store the channel selection data at that time. Manually open side j human power k
jJI [11] This function is hereinafter referred to as the manual surge function.

In the case of the auto search function, when the tuned Ef reaches its maximum value, it switches to the band ♀VHFO high band, then to UHF, and performs the same operation.

The problem with this type of conventional device is that when using the autosurge function, it is necessary to store selection data such as the received signal, the tuning signal, etc. on a certain channel. The point is that it is unclear whether it is true (fζ-so's full data storage of the channel power). The display unit 5 indicates whether the received signal is present or not and whether the signal is controlled to be memorized or not.
It is not displayed (starting from 5^).

Therefore, is the channel that the user thinks is actually memorized? Even if you don't remember it, you can still go through it.

Table 1) I: In part 5, it is possible that the cathode ray tube 80 mj and the channel display cannot be seen at the same time, so it is difficult to tell whether the desired channel is the one you want.

Purpose of the Invention The present invention eliminates the above-mentioned conventional drawbacks, displays all channel numbers on both sides of the cathode ray tube, and displays the memory operation 4 on the cathode ray tube screen during auto search. By changing the color of the channel letters to let the user know that the channel has been memorized, and by displaying the channel letters on the screen,
, +', ', fIf you understand -f'', the channel display device 6 that can be displayed is j1 - f - rkot'=
Structure of the Invention According to the present invention, a microphone is connected between a character generator controlled by a computer and capable of displaying channel characters on a screen, a storage device, and a channel selection circuit. The data of the microcomputer, etc.
Then, after erasing the sound information, the character generator displays the channel characters on the cathode ray tube screen. At that time, the first page of the channel ``Character ``Janne!'' changed, and as it changed, seven screens appeared, J-: Gutataz-41 to L,:
During the search, the presence of a received signal is determined, and at the time of writing, the channel letters on the screen are changed to memorize and display the signal.・)
To make sure that the user knows the NA.

Embodiments of the present invention will be described with reference to FIGS. 2 and 3.
Explanation-f-ru.

? 1 is a tune, which sends a reception PIF signal to the tuning circuit 2, and is supplied with a tuning voltage from the tuning circuit 2. 3 is L Memory Soj@, which is the control section.

The microcomputer 4 transmits the data to the microphone 1 to 4, stores the data, and sends the data to the microphone 4 using R6 as necessary. side j, and make the character generator 9 display a channel character (1000 channel number) on the screen of the data transmitter r1 true line tube 8 according to the required K. 6 is an intermediate frequency intensifier, 7 is It is an elephant magnifier.

Control Iha to start auto search function ■1 micro:
At this time, the microphone [1 combination viewer 4]
is stored in the storage device 3 in detail. Tuning type 1- of each station
There is band information, , [delete channel selection data such as AFC'1'7+' information]. Meanwhile, nothing is displayed on the cathode ray tube 80 screen.

After the erasure is completed, the tuning voltage fi'y is raised and search selection is started.If this system I is one type with a frequency 7 synthesizer, the local oscillation signal corresponding to the tuning type H is This local oscillation signal is output from the tuner 1 to the channel selection circuit 2. This local oscillation signal is frequency-divided by 8, compared with the branched output of the reference frequency oscillation signal, and matched using a PLL loop. The channel number is calculated from the frequency division ratio of the signal f
l, Microcombi. - The data generator 4 outputs data for displaying the channel branch of the channel number on the character generating device 9.

The search will start and the selected channel will change.

When started, the microcomputer 4 displayed no.

By changing the data that determines the position of the hydration direction of channel 14, the screen of cathode ray tube 8 - 4f from the right when facing the leg.
Move the displayed channel number according to the tuning voltage and band.

This condition is shown in Figure 3.As shown in the hole in the figure, the channel number ``1'' is placed at the right end, and the numbers increase as the number increases.As shown in c and d, the channel number is is displayed moving to the left.

When it is determined that there is a received signal from the same amount signal or the AFC signal 1f, the microcomputer 4 outputs an output to the booter character generator 9 which changes the expression j<sfl, /ext channel number. The microcomputer 4 stores this information in the storage device 3 (41), then returns the channel number color to the previous color (2) and begins searching for the next one.

When the maximum tuning power of UHF is reached, the search is stopped and the channel 14 of program number "1" is displayed.

-Ej5 In the case of the manual search function, a search is performed in the same way as in the case of the auto serve function, but if it is determined that there is a received signal, the search ♀ is stopped.

Therefore, if you manually input an input to the microcomputer 4 to store it in the storage device 3, it will be displayed at 11h.
Change the color of the channel number.

Effects of the Invention As described above, according to the present invention, channel letters are displayed on one surface of the cathode ray tube when searching, are moved according to changes in the selected channel, and colors are displayed when remembering the selected channel. This makes it easy to display to the user that the search is in progress, and allows the user to easily recognize the screen and channel by changing the display color. It has some effects, such as being able to make a swamp thicker.

[Brief explanation of drawings]

Figure 1 shows that in Nsteno, which has a conventional search function,
-1- Yannesse display? FIG. 2 is a block diagram of the channel/L display device in the first embodiment of the present invention, and FIG. 3 is a table 71 of the channel/L in the first embodiment of the present invention. 1 is a top view of the screen of a digital TV receiver. 1. Channel selection circuit; 3.
......Memory device R, 4°'' microcomputer, 8...[Window tube, 9...Character display device' level.

Claims (1)

[Claims] The data input/output side between the character generator that displays channel letters on the screen, the storage device, and the channel selection circuit is all performed (ζ Data is sent to the character generator and the channel letters are displayed on the screen. The channel character display digits displayed on the screen when searching for a channel are all moved according to changes in the selected channel, and when there is a received signal and all of the selected channel data is stored in the above storage device, it is displayed. Channel display section (intermediate) characterized by 17 characters that change the color of the channel letters.