[Added 5-20-2024 by Ord. No. 524]
ANIMATED SIGN
A sign employing actual motion, the illusion of motion, or light and/or color changes achieved through mechanical, electrical, or electronic means. Animated signs, which are differentiated from changeable signs as defined and regulated by this section, include the following types:
A.
ENVIRONMENTALLY ACTIVATED
Animated signs or devices motivated by wind, thermal changes, or other natural environmental input. Includes spinners, pinwheels, pennant strings, and/or other devices or displays that respond to naturally occurring external motivation.
B.
MECHANICALLY ACTIVATED
Animated signs characterized by repetitive motion and/or rotation activated by a mechanical system powered by electric motors or other mechanically induced means.
C.
ELECTRICALLY ACTIVATED
Animated signs producing the illusion of movement by means of electronic, electrical, or electromechanical input and/or illumination capable of simulating movement through employment of the characteristics of one or both of the classifications noted below:
(1)
FLASHING
Animated signs or animated portions of signs whose illumination is characterized by a repetitive cycle in which the period of illumination is either the same as or less than the period of non-illumination. For the purposes of this section, flashing will not be defined as occurring if the cyclical period between on-off phases of illumination exceeds four seconds.
(2)
PATTERNED ILLUSIONARY MOVEMENT
Animated signs or animated portions of signs whose illumination is characterized by simulated movement through alternate or sequential activation of various illuminated elements for the purpose of producing repetitive light patterns designed to appear in some form of constant motion.
CHANGEABLE SIGN
A sign with the capability of content change by means of manual or remote input, includes the following types:
A.
MANUALLY ACTIVATED
Changeable sign whose message copy or content can be changed manually on a display surface.
B.
ELECTRICALLY ACTIVATED
Changeable sign whose message copy or content can be changed by means of remote electrically energized on-off switching combinations of alphabetic or pictographic components arranged on a display surface. Illumination may be integral to the components, such as characterized by lamps or other light-emitting devices; or it may be from an external light source designed to reflect off the changeable component display. See also "electronic message center."
DISPLAY TIME
The amount of time a message and/or graphic is displayed on an electronic message sign.
DISSOLVE
A mode of message transition on an electronic message sign accomplished by varying the light intensity or pattern, in which the first message gradually appears to dissipate and lose legibility with the gradual appearance and legibility of the second message.
DYNAMIC FRAME EFFECT
An electronic message sign frame effect in which the illusion of motion and/or animation is used.
ELECTRONIC MESSAGE CENTER OR SIGN (EMC)
An electrically activated changeable sign whose variable message and/or graphic presentation capability can be electronically programmed by computer from a remote location. Also known as an EMC. EMCs typically use light emitting diodes (LEDs) as a lighting source. (See also following terms principally associated with electronic message centers: display time, dissolve, dynamic frame effect, fade, frame, frame effect, scroll, transition, travel.)
FADE
A mode of message transition on an electronic message sign accomplished by varying the light intensity, where the first message gradually reduces intensity to the point of not being legible and the subsequent message gradually increases intensity to the point of legibility.
FRAME
A complete, static display screen on an electronic message sign.
FRAME EFFECT
A visual effect on an electronic message sign applied to a single frame. See also "dynamic frame effect."
REVOLVING SIGN
A sign that has the capability to revolve 360° about an axis. See also "animated sign, mechanically activated."
SCROLL
A mode of message transition on an electronic message sign in which the message appears to move vertically across the display surface.
TRANSITION
A visual effect used on an electronic message sign to change from one message to another.
TRAVEL
A mode of message transition on an electronic message sign in which the message appears to move horizontally across the display surface.