Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Reexamination Certificate
1997-07-09
2001-03-20
Flynn, Nathan (Department: 2711)
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
Reexamination Certificate
active
06204841
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a programmed recording method of a cable television (CATV) broadcasting signal, and more particularly to a method of performing programmable recording of the CATV broadcasting signal which a viewer desires to watch by automatically transmitting a channel-up code so as to direct the CATV channel to a valid channel for recording especially when the current CATV channel is an invalid channel.
2. Description of the Prior Art
Generally, CATV broadcasting signals are scrambled when transmitted to subscribers, so that only subscribers having a converter box or a computer built into a television-video cassette recorder (TV-VCR) system can obtain the benefit or enjoyment of viewing or programmed recording of the CATV signals.
CATV converters have been manufactured by many manufacturers, and some of them have the characteristics in that if the converter is set at a channel not designated for programmed recording of the CATV channel signal, the channel signal is not recorded. Instead, the previous channel signal is recorded. For example, referring to
FIG. 1
, if the previous channel is ‘
30
’ for sports and an invalid channel of the current CATV broadcast is ‘
12
’ in case of the programmed recording of a channel ‘
31
’ of the Catch-one CATV broadcast, the viewer may set the Catch-one channel ‘
31
’ by sequentially selecting the numeral keys ‘
3
’ and ‘
1
’ in a remote controller. When ‘
3
’ is first selected, due to the characteristic of the converter, channel ‘
30
’ is first posted on the converter. If the second numeral is pressed after a time delay, the converter treats the second numeral ‘
1
’ as corresponding to an invalid channel and does not switch to the newly selected channel. Thus when the programmed recording time is arrived after a predetermined time, the previous channel ‘
30
’ for sports is selected and recorded.
As a result, the CATV channel signal set by the viewer for the programmed recording thereof cannot be recorded since the programmed channel is converted to the previous channel due to the characteristic of the converter even though channel data is transmitted.
SUMMARY OF THE INVENTION
It is an object of the present invention is to solve the problems involved in the prior art, and to provide a programmed recording method of a CATV broadcast which can perform programmable recording of the CATV broadcast by automatically transmitting a channel-up code to convert the programmed CATV channel to a valid channel in the event that the CATV channel is an invalid channel.
In order to achieve the above object, there is provided a programmed recording method of a CATV broadcast comprising the steps of determining whether a current time reaches a start time for programmed recording in a programmed recording mode; determining whether a current mode is a CATV broadcast recording mode when the current time reaches the start time for programmed recording; moving a programmed CATV broadcast channel to a valid channel if the current mode is the CATV broadcast recording mode; and converting a current mode of a cable converter to a receiving mode and converting a current mode of a recorder/player to a recording mode when the movement to the valid channel is completed.
REFERENCES:
patent: 5473442 (1995-12-01), Kim et al.
patent: 5559550 (1996-09-01), Mankovitz
patent: 5692214 (1997-11-01), Levine
Dilworth & Barrese LLP
Flynn Nathan
Samsung Electronics Co,. Ltd.
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