Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate
1997-08-21
2002-10-22
Nguyen, Huy (Department: 2615)
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
C386S349000
Reexamination Certificate
active
06470136
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a video recording apparatus such as a VCR or VTR with a reserved recording function and also to a video recording method adapted to realize such a function. And more particularly, it relates to an apparatus and a method capable of performing a reserved recording operation exactly even when any time difference is existent between the standard time of a receiving site and that of a broadcasting station.
2. Description of the Related Art
In most of the continental countries such as the Netherlands, Belgium and so forth, it is possible to receive UK broadcasts (e.g., BBC
1
, BBC
2
, etc.) either directly or through CATV or the like via a broadcasting satellite.
Currently in Europe, there are many broadcasting stations which render services of transmitting broadcast programs by superimposing, on a vertical blanking interval of a television broadcast signal, a code representing “program data”, “station ID” and “current date and time [UTC (Unified Time Coordinated)+LTO]”.
These broadcast services are prescribed formally in Europe, including VPS Format diffused in Germany, Switzerland and Austria; 8/30/Format
2
(PDC) diffused in the Netherlands and Belgium (Dutch zone), France and UK (United Kingdom); 8/30/Format
1
diffused in UK and Belgium (French zone) and Italy; and Teletext Page Header diffused in entire Europe.
The concrete contents of such data include “program data”, “station ID” and “current time” in VPS and PDC; “current date and time” in 8/30/Format
1
”; and “station name” and “current (date) time” in Page Header.
Utilizing such broadcast service is effective to execute simplified reservation of video recording.
That is, the service of PDC or VPS is so performed that, as a broadcasting station transmits a program by superimposing, on the vertical blanking interval of a broadcast signal, ID (broadcast start hour) of the program being currently broadcast, hence enabling an apparatus, which is equipped with a reserved recording function, to comply flexibly to an extension of the program or a change of the start hour.
For example, in an apparatus equipped with a function of setting the current time, a date and a time can be set by the use of “current date and time” included in the function. Meanwhile in an apparatus with a function of recognizing “station ID”, the name of the broadcasting station of the channel being currently received can be identified.
In another apparatus with a recording function (e.g., VCR or VTR), it is possible to perform reserved recording of a desired program of any broadcasting station by utilizing “program data”.
More specifically, it is so prescribed that, in any broadcasting station conforming with the PDC or VPS, each of programs is labeled (termed PIL) in advance, and during broadcast of any one program, the label thereof is transmitted continuously.
In most cases, such program label signifies an actual broadcast start hour (in a county where the relevant station is sited), so that when the program is received in that country where no time difference is existent, effective use is possible.
With the exception of some particular case, the apparatus starts its recording operation upon reception of a coincident label, and stops the recording operation in response to noncoincidence of the label.
Generally, program tables of television broadcasts and the like are printed in newspapers or magazines.
FIGS. 13A and 13B
show examples of program tables printed in newspapers or magazines, in which
FIG. 13A
represents an excerpt of the program table of BBC
1
printed in the UK newspaper TV column, and
FIG. 13B
represents excerpts of program tables of the Netherlands NED
1
and the UK BBC
1
printed in TV magazines.
For example, the BBC
1
program table of Apr. 20, 1996 printed in the UK newspaper TV column is such as shown in FIG.
13
A.
When a user living in the UK reads the program table of FIG.
13
A and wants to reserve timed recording of the documentary which starts at 15:00, then the user makes a reservation of the BBC
1
program starting at 15:00 on Apr. 20, 1996.
In another exemplary case, when a user living in the Netherlands reads the NED
1
program table of
FIG. 13B
printed in a Dutch TV magazine and wants to reserve timed recording of a desired program, the user makes a similar reservation.
FIGS. 14A and 14B
represent PDC program labels (PIL) relative respectively to the program tables shown in
FIGS. 13A and 13B
.
In
FIGS. 14A and 14B
showing examples of program ID set in the program tables of
FIGS. 13A and 13B
by broadcasting stations,
FIG. 14A
represents a program table of BBC
1
and its program ID, and
FIG. 14B
represents a program table and its program ID of NED
1
in the Netherlands and those of BBC
1
in the UK.
Since the UK BBC
1
is a broadcasting station conforming with the PDC, the program ID (program label: PIL) of the table shown in
FIG. 13A
is such as represented in FIG.
14
A.
Regarding NED
1
in the Netherlands also, the program ID of the table shown in
FIG. 13B
is such as represented in FIG.
14
B.
However, since the program ID of the program table is set by each broadcasting station, it is kept unchanged regardless of any of different receiving sites. Although the program ID of the program tables shown in
FIGS. 14A and 14B
are not printed in TV columns of newspapers or magazines, PDC program ID are additionally annexed here to the program table of the UK BBC
1
printed in a Dutch TV magazine, so as to explain the program ID. In this case, the hours signify those in the UK where the broadcasting station is sited.
The following explanation will be given on an exemplary case where a user living in the Netherlands makes a reservation according to the program table shown in FIG.
13
B.
Dutch TV magazines published in the Netherlands carry Dutch broadcast hours.
When a user reserves news of NED
1
at 07:00 and a drama of BBC
1
at 09:00, there are registered, in an internal memory for reservation data in a video recording apparatus, data of 1996.4.20 07:00-09:00 (Pos
1
: NED
1
) as PIL Reserved (reserved program) No. 1, and also data of 1996.4.20 09:00-12:30 (Pos
4
: BBC
1
) as PIL Reserved No. 2.
The state of registration of such data will be described below with the structure of a video recording apparatus.
FIG. 15
is a function block diagram showing a structural example of principal components in a video recording apparatus equipped with a known reserved recording function. In this diagram, there are included an antenna
1
, a tuner circuit
2
, a video recording circuit
3
, a data detector (program data/station code/date-time data detector)
4
, a VTR microprocessor
5
, first to third memories
6
a
-
6
c
, a key input manipulator
7
, a display control circuit
8
, a monitor TV unit
9
, an infrared sensing circuit
10
, and a remote commander
11
.
In the video recording apparatus with a reserved recording function shown in
FIG. 15
, data of reserved recording set by the user are stored in the first to third memories
6
a
-
6
c.
In the first memory
6
a
, there is stored the data of reserved program.
Meanwhile the Pos data set in the video recording apparatus is stored in the second memory
6
b
, and the data of station code and station name is stored in the third memory
6
c.
The contents of the data stored in the first to third memories
6
a
-
6
c
are such as those shown in
FIGS. 16A
to
16
C respectively.
FIGS. 16A
to
16
C are explanatory diagrams representing the states of storage of such data in individual areas of the first to third memories shown in FIG.
15
.
FIG. 16A
shows the content of the first memory
6
a
to store the reserved program data;
FIG. 16B
shows the content of the second memory
6
b
to store the Pos data; and
16
C shows the content of the third memory
6
c
to store the station code and station name data.
As shown in
FIG. 16A
, the reserved program data is composed of “PIL Reserved” and “PDC ON/OFF”.
Regarding “PIL Reserved” No. 1, as described above, there are sto
Frommer William S.
Frommer & Lawrence & Haug LLP
Nguyen Huy
Simon Darren M.
Sony Corporation
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