Photography – With data recording – Magnetically on film or film cassette
Reexamination Certificate
2001-02-01
2002-01-01
Mathews, Alan A. (Department: 2851)
Photography
With data recording
Magnetically on film or film cassette
C396S311000, C355S040000
Reexamination Certificate
active
06336006
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to a magnetically recordable photographic film, a recording method and a recording system employing the photographic film, and a camera laboratory system employing the photographic film. The invention encompasses the following first to fifth embodiments.
This invention relates, in the first embodiment, to disposition of a perforation relative to an information recording region of a photographic film having a transparent magnetic recording layer.
This invention relates, in the second embodiment, to a photographic film having a transparent magnetic recording layer, a recording method and a recording system for recording on the photographic film and, above all, to a relation between the photographic film and the perforation in the photographic film and to a recording system especially for camera information.
This invention relates, in the third embodiment, to a recording method for a photographic film provided with a transparent magnetic recording layer, and a photographic film used in the recording method and more particularly to recording of film information.
This invention relates, in the fourth embodiment, to camera and laboratory system and, more particularly, to a camera systems having a magnetic device for magnetic recording by to clock signals in response to the relation between the clock signals and data signals, and to the relation between the pulse frequency and the film transport speed.
This invention relates, in the fifth embodiment, to a camera system and, more particularly, to a camera systems having a magnetic device for magnetic recording.
RELATED ART
The related art for the first to fifth embodiments of the invention is summarized as follows.
Related Art in the First Embodiment
A photographic film having a transparent magnetic recording layer has been disclosed in international patent applications having international filing numbers PCT/US 89/04367 and PCT/US 89/04362 and laid open to public inspection internationally (now WO 90/04214 and WO 90/04253). These international patent applications disclose disposition of information recording regions on a photographic film, as shown herein in FIG.
23
.
FIG. 23
shows, in a front view, a conventional photographic film
100
disclosed in the above referenced international applications. A perforation
125
is formed in a region A defined by a long side
1
of a rectangular photosensitive image area defined by a double-dotted chain line, i.e., frame, and extensions of two short sides m and n of the frame adjacent to the long side
1
, that is, in a laterally peripheral region of the frame. Meanwhile CO to C
3
and FOO to F
29
represent magnetic recording tracks.
Related Art in the Second Embodiment
A photographic film having a transparent recording layer is disclosed in international applications filed under international application numbers PCT/US 89/04367 and PCT/US 89/04362 and laid open to public inspection internationally (now WO 90/04214 and WO 90/04253). In these international applications, a pattern of disposition of information recording regions on a photographic film, as shown herein in
FIG. 23
, is disclosed. In this figure, there is shown in a front view a conventional photographic film
100
which is disclosed in the above identified international applications, and which includes magnetic recording tracks CO to C
3
and FOO to F
29
, a photosensitive image area (i.e., frame), defined by a double-dotted chain line, and a perforation
125
. It is stated in the specification of each of the international applications that information may be recorded on the magnetically recordable tracks CO to C
3
by a camera capable of effecting magnetic recording.
There has hitherto been proposed a camera system or a laboratory system in which communication of information between a camera user, a film dealer and a photofinisher or developing laboratory, as well as supervision of information such as supervision of users' names in the photofinisher, is enabled by magnetic recording on a continuous film.
Such a camera system is disclosed in an international publication WO 90/04253. With the camera system disclosed in this international publication WO 90/04253, when recording the information to be transmitted or supervised as magnetic recording on the continuous film, recording tracks each specifically dedicated to the camera users, film dealers and the photofinishers, respectively are provided in separate portions on the continuous film. On each track, clock signals and data signals are formed as unitary pulse trains in the form of three-bit encoded data (so called “Tri-bit code”).
The waveform of the three-bit encoded data disclosed in the above international publications is shown herein in
FIG. 24
, in which rising transition pulse flanks P
1
A and P
2
A in each of the rectangular pulses correspond to clock signals prescribing a period t of signals to be recorded. If a pulse width td, which indicates the time since the rising transition pulse flank P
1
A until the next falling transition pulse flank P
1
B, is expressed by td=t/3, as shown in FIG.
24
(
a
), the data signal is a binary signal having a logical level of 0. If the pulse width td is expressed by td=2 t/3, the data signal is a binary signal having a logical level of 1.
The waveform of reproduced signals, which are the magnetic recordings made by the signals shown in FIG.
24
and reproduced by a magnetic head, is shown in FIG.
25
. In the reproduced signals shown in FIGS.
25
(
a
) and (
b
), positive peak pulses Q
1
A, Q
2
A are produced at time points corresponding to the clock signals, while a negative peak pulse Q
1
B is produced at a time point corresponding to the data signal. The logical levels of 0 or 1 are determined in dependence upon which of the positive peak pulses Q
1
A and Q
2
A lying before and after the negative peak pulse Q
1
B is closer to the peak pulse Q
1
B. With the three-bit encoded data, since the clock signals and the data signals are recorded on the same track, the recordings may be transmitted mutually between the user, film dealer and photofinisher despite differences in the film feed speeds between the magnetic devices or the film feed speeds at the camera system, film dealers and the photofinishers. Even when the continuous film is fed in the opposite direction to the recording direction, signals may be deciphered by reference to signal data constituted by bits which are complements to the bits of the three-bit data.
Related Art of the Third Embodiment
There has hitherto been proposed a camera system or a laboratory system in which communication of information between a camera user, a film dealer and a photofinisher or developing laboratory, as well as supervision of information such as supervision of users' names in the photofinisher, is enabled by magnetic recording on a continuous film, as discussed in connection with the second embodiment mentioned herein above.
Such a camera system is disclosed in PCT international publications WO 90/04253 and WO 90/04214. On each track, clock signals and data signals are formed as unitary pulse trains in the form of three-bit encoded data (so-called Tri-bit code). An explanation for the Tri-bit code signals has been substantially given in connection with the above mentioned second embodiment.
Related Art for the Fourth Embodiment
The related art for the fourth embodiment is as mentioned in connected with the second and the third embodiments and hence the description therefor is omitted.
Related Art for the Fifth Embodiment
The related art for the fifth embodiments is as mentioned in connection with the second and third embodiments and hence the description is similarly omitted.
DISCUSSION OF THE RELATED ART
Problems to be Solved by the Invention
The followings are problems to be sovled by the present invention in its first to fifth embodiment.
Problem to be Solved by the First Embodiment
If the perforation is provided in the region defined laterally of each frame, limitations are imposed for a given film width on the lengt
Kato Yoshiaki
Komori Noboru
Yoshida Satoshi
Fuji Photo Film Co. , Ltd.
Mathews Alan A.
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