Apparatus for turning monitoring camera

• US 5,289,091 A
• Filed: 09/03/1992
• Issued: 02/22/1994
• Est. Priority Date: 09/09/1991
• Status: Expired due to Term

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Wada, Jyoji
• Primary Examiner(s): Shoop, Jr., William M.
• Assistant Examiner(s): Cabeca, John W.
• Application Number:
  US07/940,320
• Time in Patent Office: 537 Days
• Field of Search: 318/282, 318/286, 318/289, 318/280, 318/602, 318/601, 354/81, 354/293
• US Class Current: 318/282
• CPC Class Codes: H04N 23/695 Control of camera direction for changing a field of view, e.g. pan, tilt or based on tracking of objects
• CPC Class Codes: H04N 7/183 for receiving images from a single remote source

Abstract

There is disclosed a monitoring camera turning apparatus. An angle sensor continuously detects the turning angle of a turning shaft for turning a monitoring camera. Two detected angles are recorded as boundary limit angles in a recorder at the moment of generation of trigger signals. In a comparator, the recorded boundary limit angles are compared with the turning angle detected by the angle sensor at a moment. In accordance with results of this comparison, a switch device changes a direction of rotation of the turning shaft, thereby turning the monitoring camera in a monitoring range.

Claims

1. Apparatus for turning a monitoring camera comprising:

means for mounting said monitoring camera, said mounting means adapted to be turned;

means for detecting a turning angle of said mounting means;

means for recording therein a pair of turning angles detected by said detecting means as monitoring boundary limit angles, wherein said recording means includes a first recorder for recording not less than three angles detected by said detecting means, and a second recorder for recording not less than two combinations of the angles, each combination consisting of two angles selected from said angles recorded in said first recorder;

means for comparing said monitoring boundary limit angles recorded in said recording means with a turning angle detected by said detecting means at a moment; and

means for changing a direction of turning of said mounting means in accordance with results of comparison by said comparing means.

2. Apparatus according to claim 1, wherein said detecting means includes a pulse encoder and a pulse counter.