GB1399523A - Colour television receiver - Google Patents

Colour television receiver

Info

Publication number
GB1399523A
GB1399523A GB2742672A GB2742672A GB1399523A GB 1399523 A GB1399523 A GB 1399523A GB 2742672 A GB2742672 A GB 2742672A GB 2742672 A GB2742672 A GB 2742672A GB 1399523 A GB1399523 A GB 1399523A
Authority
GB
United Kingdom
Prior art keywords
rectangular wave
signal
colour
circuit
blanking period
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2742672A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP4550671A external-priority patent/JPS5221332B1/ja
Priority claimed from JP4550771A external-priority patent/JPS5219409B1/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1399523A publication Critical patent/GB1399523A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/44Colour synchronisation
    • H04N9/465Synchronisation of the PAL-switch

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

1399523 Colour television MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 12 June 1972 [22 June 1971 (2)] 27426/72 Heading H4F A PAL-switch in a colour television receiver is controlled in phase by the circuit of Fig. 2 receiving the received colour bursts at 11, the bursts being amplified at 13 and passed via a detector 14 and amplifiers 15, 16 to produce a rectangular wave output during each vertical blanking period, the trailing edge of this rectangular wave coinciding with the occurrence of the first colour burst following the vertical blanking period, the rectangular wave being differentiated at 17 and the positive pulses eliminated at 18 to provide a negative pulse coinciding with the first burst (at +135 degree phase relative to the B-Y modulation axis) following each vertical blanking period. In a further embodiment (Fig. 5, not shown) the rectangular wave is fed to a NOR circuit (26) which also receives a signal derived by integrating the synchronizing signal, shaping this integrated signal and integrating the shaped signal. The output of the NOR circuit is passed via a differentiator and diode to produce an output signal as in Fig. 2.
GB2742672A 1971-06-22 1972-06-12 Colour television receiver Expired GB1399523A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4550671A JPS5221332B1 (en) 1971-06-22 1971-06-22
JP4550771A JPS5219409B1 (en) 1971-06-22 1971-06-22

Publications (1)

Publication Number Publication Date
GB1399523A true GB1399523A (en) 1975-07-02

Family

ID=26385512

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2742672A Expired GB1399523A (en) 1971-06-22 1972-06-12 Colour television receiver

Country Status (3)

Country Link
DE (1) DE2230296C3 (en)
GB (1) GB1399523A (en)
NL (1) NL7208476A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5813045B2 (en) * 1976-01-30 1983-03-11 ソニー株式会社 Master-slave flip-flop circuit phase inversion circuit

Also Published As

Publication number Publication date
DE2230296A1 (en) 1972-12-28
DE2230296B2 (en) 1974-09-26
DE2230296C3 (en) 1975-05-15
NL7208476A (en) 1972-12-28

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee