JPH08186472A - Frequency synthesizer channel selection system - Google Patents

Abstract

PURPOSE: To improve the operability for channel selection by storing channel selection reception information corresponding to receivable channels in a storage circuit by a position information processing circuit in 1:1 correspondence between channel numbers and position numbers. CONSTITUTION: Channel selection reception information like color systems or sound frequencies (SIF) corresponding to respective receivable channels are preliminarily stored in a memory 10 as the storage circuit in 1:1 correspondence between channel (CH) numbers and position (POS) numbers in accordance with a preset instruction by a POS information processing circuit 9, and CH is preset to POS. Thus, channel selection reception information adapted to CB can be set to CB with respect to each of all CBs. The distinction between CH selection and POS selection is eliminated, and the troublesome operation that several buttons are depressed a certain number of times after depression of a CH selection button is simplified at the time of CH selection.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frequency synthesizer tuning system having position tuning and channel tuning functions.

[0002]

2. Description of the Related Art Conventionally, for example, in a television receiver, two types of channel selection methods of position (hereinafter referred to as POS) channel selection and channel (hereinafter referred to as CH) channel selection are available. A frequency synthesizer (hereinafter referred to as FS) tuning system having a station function is used.

Hereinafter, regarding the conventional FS channel selection system,
This will be described with reference to the drawings. FIG. 2 shows a state in which CH is preset to POS in the conventional FS channel selection system. In FIG. 2, 11 is a receivable reception CH, and 12 is a memory in which POSs are arranged.

A conventional FS comprising the above components
The operation of the channel selection system will be described below. In the conventional FS channel selection system, the number of POSs arranged in the memory 12 (for example, POSs of POS ₀ to POS ₄₉ ) is smaller than the number of CHs of the reception CH 11 (for example, CHs of CH ₀ to CH ₁₂₅ ) (CH. Number> POS number), received C
Color system and audio frequency according to H (hereinafter SIF
The reception CH is preset for each POS by a method of setting channel selection reception information such as ()) in the order of the received CH and in the order of the POS number.

Such a preset operation can be performed until the reception CH is preset for all POS numbers, and the preset reception operation stores the tuning reception information corresponding to each reception CH stored in the memory 12. Based on this, the channel to be viewed is selected by POS channel selection or CH channel selection.

[0006]

However, in the conventional FS channel selection system as described above, when the channel to be received is selected by POS channel selection, the number of receivable CHs gradually increases and the number of POS points becomes insufficient. Depending on the channel, some channels can be received but cannot be selected.
In many cases, the numbers and CH numbers are different, so you have to remember which CH you put in which POS. If you forget it, you must select the channel by referring to the comparison table of POS number and CH number. In addition, there is a problem that a very troublesome operation is required.

Further, when selecting a CH to be received by CH selection, a cumbersome operation of pressing the CH selection button and then a certain number of numeric buttons is required.
With such an operation, you can select a channel directly by CH number,
This CH number may not be preset in the POS, and in this case, since there is no tuning reception information for this CH number, problems such as no color or no sound may occur. Had.

Further, since there are two kinds of channel selection methods, it is not possible to discriminate whether the program currently being watched is selected by CH channel selection or POS channel selection by simply looking at the screen.
For example, if you tune in to CH and watch CH ₁₀ , then
If the POS ₁₀ with the same number as the CH number is selected by S tuning, for example, CH ₁₂ will be different from the previous one,
It also had the problem of being very confusing.

The present invention solves the above-mentioned conventional problems, and provides a frequency synthesizer tuning system capable of simplifying a troublesome operation when selecting a channel and improving operability. The purpose is to do.

[0010]

In order to achieve the above object, a frequency synthesizer tuning system of the present invention is a frequency synthesizer tuning system having functions of position tuning and channel tuning. For storing the channel selection reception information corresponding to each receivable channel, a POS information processing circuit for performing processing based on the channel selection reception information of the storage circuit, and the selection circuit. A channel selection processing circuit that performs channel selection based on station reception information, and the POS information processing circuit stores the channel selection reception information in a one-to-one correspondence with channel numbers and position numbers. It is configured to be stored in.

[0011]

According to this structure, when the channel is preset to the position by the preset instruction, the POS information processing circuit outputs the channel selection reception information corresponding to each receivable channel, the channel number and the position number. The data is stored in the memory circuit in a one-to-one correspondence.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An FS channel selection system according to an embodiment of the present invention will be described below with reference to the drawings.

Generally, the FS channel selection system is used to select a channel desired by a user in a television receiver, a radio receiver, various radio devices, etc. Here, the FS channel selection system is used. A case in which is used for a television receiver will be described.

FIG. 1 is a block diagram of the main part of a television receiver including the FS channel selection system of this embodiment. In FIG. 1, first, a process for a television signal will be described. The television signal received by the antenna A passes through the tuner 1, the video intermediate frequency amplification circuit 2 and the video detection circuit 3 and is divided into a video signal and an audio signal. The video signal passes through the video amplification circuit 4 and is converted into an image by the CRT 5 as an image. The imaged audio signal is output as audio from the speaker 7 through the audio signal processing circuit 6.

Next, the processing of the FS channel selection system will be described. Here, in accordance with a preset instruction, tuning reception information such as a color system and a sound frequency (hereinafter, referred to as SIF) corresponding to each channel receivable by the POS information processing circuit 9c includes CH number and POS. A state in which numbers are associated with one-to-one correspondence (POS ₀
And CH ₀ , POS ₁ and CH ₁ , POS ₂ and CH ₂ ...
), CH is preset to the POS and stored in the memory 10 as a storage circuit.

The input operation section 8 comprises a numeric button 8a consisting of 10 buttons 0 to 9. Use this number button 8 to select the channel you want to watch by POS tuning.
When a is operated, the POS in the microcomputer 9
The number determination circuit 9a operates to determine the POS number for channel selection. When the POS to be selected is confirmed, the POS change command generation circuit 9b operates and the POS information processing circuit 9c generates the frequency of the same CH number as the confirmed POS number, and at the same time, the POS number selected from the memory 10 is changed. The tuning reception information is extracted and processed, the tuner 1 is controlled by the tuner control means 9d as a tuning processing circuit, and the CH tuning is performed by the POS tuning.

As a result of the above operation, the CH
It is possible to set tuning reception information suitable for each CH. Also, there is no distinction between CH channel selection and POS channel selection,
When selecting a channel, it is possible to simplify the troublesome operation of pressing the channel selection button and then pressing the number button a certain number of times, thus improving operability.

In the above embodiment, the case where the FS channel selection system is used for the television receiver has been described, but the channel desired by the user is selected by each function of position channel selection and channel selection. The same can be applied to the case of using for a radio receiver, various radios, and other devices.

[0019]

As described above, according to the present invention, when presetting a channel to a position by a preset instruction, the POS information processing circuit displays the channel selection reception information corresponding to each receivable channel by the channel number. And the position number can be stored in the storage circuit in a one-to-one correspondence.

Therefore, it is possible to simplify the troublesome operation when selecting a channel and improve the operability.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing the use of an FS channel selection system according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of CH preset by a conventional FS channel selection system.

[Explanation of symbols]

 9c POS information processing circuit 9d tuner control means 10 memory

Claims (1)

[Claims] 1. In a frequency synthesizer tuning system having functions of position tuning and channel tuning, positions for the position tuning are arranged, and tuning reception information corresponding to each receivable channel is stored in the position. And a POS information processing circuit that performs processing based on tuning reception information of the storage circuit, and a tuning processing circuit that performs tuning based on the tuning reception information. A frequency synthesizer tuning system, wherein a circuit is configured to store the tuning reception information in the storage circuit in which channel numbers and position numbers are in one-to-one correspondence.