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US4994846A Expired / Lapsed US ⏱️ 0.0 years remaining

Auto strobe camera

Assignee: Pentax Corp
•
Filing: 1989-06-30
•
Granted: 1991-02-19
•
Expires: 2009-06-30
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Abstract

Abstract An auto strobe camera that gives a clear indication of the status of a strobe charge operation only when the photographer intends to take a picture. In the preferred embodiment of the invention, the auto strobe camera includes a strobe flashing unit which emits light when a photometric switch is turned on and an exposure value is below a certain level. The invention includes an indicator unit that indicates that a charging process is going on, only when the photometric switch is turned on and the strobe is not ready to flash, even though the flash is required to obtain a properly exposed photograph. The indicator unit informs the photographer to wait until the charging operation is finished, only when the photometric switch is turned on and the strobe is not ready to flash, although the use of the strobe flash is required.

Inventors

  • 👤 Takeo Kobayashi
  • 👤 Yasushi Tabata
  • 👤 Norio Numako
  • 👤 Katsutoshi Nagai

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 17:20
CPC Classifications
G; G03; G03B; G03B3/00; G03B3/10; G02; G02B; G02B7/00; G02B7/02; G02B7/04; G02B7/10; G02B7/102; G02B7/28; G02B7/282; G03B15/00; G03B15/02; G03B15/03; G03B15/05; G03B17/00; G03B17/02; G03B17/12; G03B17/14; G03B17/18; G03B17/20; G03B7/00; G03B7/08; G03B7/091; G03B7/16; H; H03; H03M; H03M1/00; H03M1/12; H03M1/22; H03M1/24; H03M1/28; H03M1/285; G03B2215/00; G03B2215/05; G03B2215/0503

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 102 words
A charging arrangement for a strobe of a camera comprising: (a) means for determining whether flashing of said strobe is required; (b) means for charging of said strobe in response to a determination made by said means for determining that flashing of said strobe is required; (c) a photometric switch being operable between an actuated position and a non-actuated position; and (d) means for warning that said strobe is being charged, only if said photometric switch is actuated and if it is determined by said means for determining that flashing of said strobe is required, until charging of said strobe is completed.
Claim 2
Dependent Claim 102 words
A charging arrangement for a strobe of a camera comprising: (a) means for determining whether flashing of said strobe is required; (b) means for charging of said strobe in response to a determination made by said means for determining that flashing of said strobe is required; (c) a photometric switch being operable between an actuated position and a non-actuated position; and (d) means for warning that said strobe is being charged, only if said photometric switch is actuated and if it is determined by said means for determining that flashing of said strobe is required, until charging of said strobe is completed.
Claim 3
Dependent Claim 36 words
The strobe charging arrangement according to claim 1, wherein said means for determining whether flashing of said strobe is required comprises means for measuring an exposure value of a subject to be photographed with said camera.
Claim 4
Dependent Claim 45 words
The strobe charging arrangement according to claim 2, further comprising means for warning that said charging of said strobe is completed and that said strobe is prepared to flash only in response to actuation of said photometric switch after completion of charging of said strobe.
Claim 5
Dependent Claim 29 words
The charging arrangement for a strobe according to claim 1, further comprising means for terminating said charging of said strobe upon the elapse of a predetermined amount of time.

References Cited (Backward Citations)

GB1271598A Cited
US3821750A Cited
US3953864A Cited
GB1443188A Cited
US4084167A Cited
GB1523421A Cited
US4322143A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-02-18 1994-08-20 1995-02-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-02-18 1998-08-20 1999-02-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-02-18 2002-08-20 2003-02-19 $7700.00 Window Closed / Lapsed

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