KR960007546B1 - Channel selecting method - Google Patents

Channel selecting method Download PDF

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KR960007546B1
KR960007546B1 KR1019910001582A KR910001582A KR960007546B1 KR 960007546 B1 KR960007546 B1 KR 960007546B1 KR 1019910001582 A KR1019910001582 A KR 1019910001582A KR 910001582 A KR910001582 A KR 910001582A KR 960007546 B1 KR960007546 B1 KR 960007546B1
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channel
broadcast
channel value
broadcasting
input
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KR1019910001582A
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Korean (ko)
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KR920015894A (en
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홍권표
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강진구
삼성전자주식회사
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/44Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/50Tuning indicators; Automatic tuning control

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

The method of selecting a channel of a TV receiver comprises the steps of: inputting the channel value of a desired broadcasting channel; comparing the input broadcasting channel value with a predetermined reference channel value; setting the broadcasting mode to a wire broadcasting mode if the input channel value is larger than the reference channel value, or setting the broadcasting mode to a TV broadcasting mode if the former is smaller than the latter; and tuning a broadcasting signal of the established broadcasting mode according to the input channel value.

Description

채널선택방법Channel selection method

제1도는 본 발명에 따른 방송채널선택방법의 흐름도이다.1 is a flowchart of a broadcast channel selection method according to the present invention.

제2도는 제1도에 도시된 흐름도를 수행하기 위한 시스템도이다.2 is a system diagram for performing the flowchart shown in FIG.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 키매트릭스 20 : 마이콤10: key matrix 20: micom

30 : 동조기 ANT : 공중선30: Tuner ANT: Aerial

본 발명은 텔리비젼 방송수신장치에 있어서, 채널선택 방법에 관한 것으로, 입력되는 채널에 따라 방송모드의 결정과 함께 해당 채널의 방송신호를 선택하는 채널선택방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a channel selection method in a television broadcast receiver, and more particularly, to a channel selection method for selecting a broadcast signal of a corresponding channel together with determining a broadcast mode according to an input channel.

일반적으로 텔리비젼 수신기는 방송국으로부터 방송되는 텔리비젼 방송신호를 수신하여 표시하는 영상수신장치이다. 텔레비젼 수신기는 다수의 방송국명으로부터 방송되는 다른 프로그램의 텔리비젼 방송신호들중 하나를 선택하기 위하여 동조기를 포함하고 있다.In general, a television receiver is an image receiving apparatus for receiving and displaying a television broadcast signal broadcast from a broadcasting station. The television receiver includes a tuner to select one of the television broadcast signals of another program broadcast from a plurality of station names.

그리고 최근 직업의 전문화 및 기술의 고도화됨에 따라 폭주하는 정보들을 대중하게 제공하기 위하여 케이블 및 인공위성을 이용한 상업방송국들이 증가되고 있는 추세에 있다. 상기 상업방송국들이 방송하는 일명 유선방송신호의 주파수대역은 기존의 텔리비젼 방송신호의 주파수대역과 다른 주파수범위를 점유하고 있다.In recent years, with the advancement of professionalism and technology of the profession, commercial broadcasting stations using cables and satellites are increasing in order to provide popular information to the crowded people. The frequency band of the so-called wired broadcast signal broadcasted by the commercial broadcasting stations occupies a frequency range different from that of the existing television broadcast signal.

또한 기존의 텔리비젼 수신기는 텔리비젼 방송신호 및 유선방송신호를 공통적으로 수신하기 위하여 채널선택키들과 방송모드스위치를 구비하여 방송모드스위치에 의해 복수의 텔리비젼 방송신호중 하나를 선택하거나 또는 반대로 방송모드스위치에 의하여 유선방송신호들의 수신모드를 설정하고 채널선택키에 의해 복수의 유선방송채널중 하나를 선택하도록 되어있다.In addition, a conventional television receiver includes channel selection keys and a broadcast mode switch to receive a television broadcast signal and a cable broadcast signal in common, and selects one of a plurality of television broadcast signals by a broadcast mode switch, or vice versa by a broadcast mode switch. The reception mode of the cable broadcasting signals is set, and one of the plurality of cable broadcasting channels is selected by the channel selection key.

그러므로 종래의 텔리비젼 수신기는 텔리비젼 방송신호를 수신하려면 채널선택키 및 방송모드스위치 모두를 조작하여야 하는 불편함과 번거로움이 있었다.Therefore, the conventional television receiver has an inconvenience and hassle to operate both the channel selection key and the broadcast mode switch in order to receive the television broadcast signal.

따라서 본 발명의 목적은 텔리비젼 수신기에 있어서 텔리비젼 방송신호 및 유선방송신호를 간단히 선택할 수 있는 채널선택방법을 제공함에 있다.Accordingly, an object of the present invention is to provide a channel selection method that enables simple selection of a television broadcast signal and a cable broadcast signal in a television receiver.

상기 목적을 달성하기 위하여 본 발명은 텔리비젼 수신기의 채널선택방법에 있어서, 선택하고자 하는 방송채널의 채널값을 입력하는 단계:비교단계에서의 비교결과에 따라 특정 방송모드로 전환하는 단계:입력단계에서의 입력된 채널값에 따라 전환된 방송모드의 방송신호를 동조과정을 수행하여 선택하는 단계를 포함하는 것을 특징으로 한다.In order to achieve the above object, the present invention provides a method for selecting a channel of a television receiver, the method comprising: inputting a channel value of a broadcast channel to be selected: switching to a specific broadcast mode according to a comparison result in a comparison step: in an input step And performing a tuning process to select the broadcast signal of the switched broadcast mode according to the input channel value of the signal.

제1도는 본 발명에 따른 실시예의 텔리비젼 방송선택 방법의 흐름도이다.1 is a flowchart of a television broadcast selection method according to an embodiment of the present invention.

제2도는 제1도에 도시된 흐름도를 수행하기 위한 시스템도로서 키매트릭스(10), 마이크로 프로세서(Micro Processor:이하 마이코이라함)(20) 및 동조기(30)로 이루어져 있다. 이의 작동을 설명하면 다음과 같다.FIG. 2 is a system diagram for performing the flowchart shown in FIG. 1, which is composed of a key matrix 10, a microprocessor 20 (hereinafter referred to as a myco) 20, and a tuner 30. As shown in FIG. The operation of this is as follows.

키매트릭스(10)는 방송채널을 선택하기 위한 숫자키들과 업(Up) 및 다운(Down)키들을 포함하고 있다.The key matrix 10 includes numeric keys for selecting a broadcast channel, and up and down keys.

마이콤(20)은 채널을 선택하는 키입력시 입력된 키에 해당하는 방송채널의 동조주파수데이터를 데이터전송을 지시하는 소정논리상태의 스트로브(strobe)신호와 함께 클럭펄스에 동기시켜 동조기(30)에 공급한다.The microcomputer 20 synchronizes the tuning frequency data of the broadcasting channel corresponding to the input key when the channel is selected with the clock pulse with a strobe signal of a predetermined logic state instructing data transmission. To feed.

동조기(30)은 소정논리상태의 스트로브신호가 인가되는 동안 클럭펄스에 동기되어 유입되는 동조주파수 데이터에 의해 공중선(ANT)을 통해 수신되는 복수의 방송신호중 하나의 방송신호를 선택하여 출력단자(5)를통해 복조수단쪽으로 송출한다.The tuner 30 selects one broadcast signal among a plurality of broadcast signals received through the aerial line ANT by the tuning frequency data introduced in synchronization with a clock pulse while the strobe signal of a predetermined logic state is applied, and outputs a terminal 5. To the demodulation means.

이어서 제1도에 도시된 흐름도를 제2도에 도시된 시스템도와 결부시켜 설명하기로 한다. 제2도중의 마이콤(20)은 일정주기마다 키매트릭스(10)를 스캔하여 채널선택키(숫자키나 업 또는 다운키)가 눌려질때 수행된다.Next, the flowchart shown in FIG. 1 will be described in conjunction with the system diagram shown in FIG. The second microcomputer 20 scans the key matrix 10 at regular intervals and is performed when the channel selection key (numeric keys, up or down keys) is pressed.

마이콤(20)은 일정시간마다 키매트릭스(10)를 스캔하여 채널선택키가 사용자에 의해 선택되는가 검사한다(제101단계).The microcomputer 20 scans the key matrix 10 every predetermined time to check whether the channel selection key is selected by the user (step 101).

제101단계에서 채널선택키가 사용자에 의해 선택될때 선택된 방송채널값을 자체내의 램에 기저장된 방송채널값 대신 저장한다(제102단계).When the channel selection key is selected by the user in step 101, the selected broadcast channel value is stored instead of the broadcast channel value previously stored in the RAM (step 102).

제102단계 수행 후 마이큼(20)은 램에 저장된 값 즉 선택된 방송채널값이 자체내의 룸에 저장된 미리 설정된 기준채널값(예로 13)보다 큰가 검사한다(제103단계).After performing step 102, the microcomputer 20 checks whether the value stored in the RAM, that is, the selected broadcast channel value is greater than the preset reference channel value (for example, 13) stored in the room (step 103).

제103단계에서 선택된 방송채널값이 기준채널값(13)보다 큰 경우 마이콤(20)은 자체내의 레지스터중에 할당한 텔리비젼/유선방송모드 플래그를 1로 세트하여 유선방송모드를 설정한다(제104단계).If the broadcast channel value selected in step 103 is greater than the reference channel value 13, the microcomputer 20 sets the wired broadcasting mode by setting the television / wired broadcasting mode flag assigned to 1 in the register thereof (step 104). ).

제104단계 수행후 마이콤(20)은 자체내의 롬상에 저장된 동조제어주파수중 자체내의 램상에 저장된 선택된 방송채널값에 해당하는 동조제어주파수를 동조기(30)에 인가하여 공중선(ANT)을 통해 수신되는 유선 방송신호들등 동조기(30)로 하여금 사용자가 선택한 채널에 해당하는 유선방송신호를 선국하도록 한다(제105단계).After performing step 104, the microcomputer 20 receives the tuned control frequency corresponding to the selected broadcast channel value stored on the RAM in the RAM among the tuned control frequencies stored in the ROM to the tuner 30 and is received through the aerial ANT. The tuner 30 such as cable broadcasting signals is tuned to the cable broadcasting signal corresponding to the channel selected by the user (step 105).

제103단계에서 선택된 방송채널값이 기준채널값(13)보다 작은 경우 마이콤(20)은 자체내의 레지스터에 할당한 텔리비젼/유선방송모드 플래그를 0리세트하여 텔리배젼 방송모드를 설정한다(제106단계).If the broadcast channel value selected in step 103 is smaller than the reference channel value 13, the microcomputer 20 sets the television broadcast mode by resetting the television / wired broadcast mode flag assigned to the register in the self (zero). step).

제107단계 수행후 마이콤(20)는 자체내의 룸상에 저장된 동조제어 주파수중 자체내의 램상에 저장된 선택된 방송채널값에 해당하는 동조제어 주파수를 동조기(30)에 인가하여 동조기(30)으로 하여금 공중선(ANT)를 통해 수신되는 텔리비젼 방송신호중 상용자가 선택한 채널에 해당하는 텔리비젼 방송신호를 선국하도록 한다(제107단계).After performing step 107, the microcomputer 20 applies the tuning control frequency corresponding to the selected broadcasting channel value stored on the RAM in the RAM among the tuning control frequencies stored in the room to the tuner 30 to cause the tuner 30 to perform the aerial ( The TV broadcast signal corresponding to a channel selected by a commercially available user from among the TV broadcast signals received through the ANT is tuned (step 107).

상술한 바와 같이 본 발명은 사용자로 하여금 채널선택키 하나만을 이용하여 유선 및 텔리비젼 방송모드의 원하는 채널을 선택하도록 함으로서 사용자에게 편리함을 제공할 수 있는 이점이 있다.As described above, the present invention has an advantage of providing convenience to the user by allowing the user to select a desired channel in a wired and television broadcast mode using only one channel selection key.

Claims (1)

텔레비젼 수신기의 채널선택방법에 있어서, 선택하고자 하는 방송채널의 채널값을 입력하는 채널값 입력단계; 상기 채널입력단계에서 입력된 방송채널의 값이 소정의 기준 채널값과 비교하는 채널값 비교단계; 상기 채널값 비교단계에서 비교된 비교결과가 상기 채널값 입력단계에서 입력된 채널값이 상기 기준 채널값보다 크면 방송모드를 유선방송모드로 설정하고, 작으면 텔레비젼 방송모드로 설정하는 방송모드 설정하는 방송모드 설정단계; 및 상기 방송모드 설정단계에서 설정된 방송모드의 방송신호를 상기 채널값 입력단계에서 입력된 채널값에 따라 선국하는 선국단계를 포함하는 텔레비젼 수신기의 채널선택방법.A channel selection method of a television receiver, comprising: a channel value input step of inputting a channel value of a broadcast channel to be selected; A channel value comparing step of comparing a value of a broadcast channel input in the channel input step with a predetermined reference channel value; If the comparison result compared in the channel value comparison step is the channel value input in the channel value input step is larger than the reference channel value, the broadcast mode is set to the cable broadcasting mode, and if the broadcast mode to set the television broadcasting mode Setting a broadcast mode; And a tuning step of tuning the broadcast signal of the broadcast mode set in the broadcast mode setting step according to the channel value input in the channel value input step.
KR1019910001582A 1991-01-30 1991-01-30 Channel selecting method KR960007546B1 (en)

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