US PATENT SUBCLASS 377 / 57
CHARGE TRANSFER DEVICE (E.G., ANALOGUE SHIFT REGISTER, CCD, BUCKET BRIGADE DEVICE)

Current as of: June, 1999
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377 /   HD   ELECTRICAL PULSE COUNTERS, PULSE DIVIDERS, OR SHIFT REGISTERS: CIRCUITS AND SYSTEMS

57CHARGE TRANSFER DEVICE (E.G., ANALOGUE SHIFT REGISTER, CCD, BUCKET BRIGADE DEVICE) {5}
58  DF  .~> Compensating for or preventing signal charge deterioration
59  DF  .~> With feedback
60  DF  .~> Particular input or output means
61  DF  .~> Direction and/or path flow control (e.g., by clocking or biasing, by charge splitting) {1}
63  DF  .~> Charge-coupled device

DEFINITION

Classification: 377/57

CHARGE TRANSFER DEVICE (E.G., ANALOGUE SHIFT REGISTER, CCD, BUCKET BRIGADE DEVICE):

(under the class definition) Subject matter where the functional element of the counter of shift register is an electrostatic potential controlled semiconductor structure, whereby counting or shifting is achieved by the sequential transfer of localized charges through storage sites within or at the surface of the semiconductor body.

(1) Note. In some charge transfer devices, such as bucket brigade types as distinguished from CCD types, not all of the charges in the storage sites are transferred.

SEE OR SEARCH CLASS

257, Active Solid-State Devices (e.g., Transistors, Solid-State Diodes), appropriate subclasses, including

215+, for charge transfer type active semiconductor devices, per se.

326, Electronic Digital Logic Circuitry,

61, for electronic digital logic with a charge transfer device.

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems, 263+, 271, 277, and 284 for miscellaneous delay circuits utilizing a charge transfer device.

333, Wave Transmission Lines and Networks,

165, for frequency or time domain filters and delay lines

utilizing charge transfer devices.

365, Static Information Storage And Retrieval,

185.01+, for floating gate memory storage (e.g., flash memory) and subclass 183 for static storage charge coupled devices.