The invention relates to a method of controlling decoder drift for memory compression comprising the steps of providing a decoded bit-stream output of a decoder (79) and a bit-stream input to an encoder (76) in a first pass of a coding loop, where the bit-stream input to the encoder (76) is based on the decoded bit-stream output of the decoder (79), determining a difference between the bit-stream input to the encoder (76) and the decoded bit-stream output of the decoder (79), where the differenc...

A compression cover is provided for placing articles such as sleeping bags, sleeping systems and other camping/backpacking equipment under compression to reduce the physical dimension thereof. The apparatus incorporates a pair of end covers each having an end wall and a short skirt portion. Compression straps extending from each of the skirt portions have buckles that are capable of being connected and tightened to thus achieve endwise compression of an article, such as a sleeping bag, sleeping ...

A compression coupling for use on air hoses to sealingly engage elongate tubular receiving members such as pneumatic tire stems and providing for depressing and opening a valve therein for air passage as in inflating a tire. The coupling parts are molded of synthetic resin and are a body, a hose connector and depressor member and a lock lever. The hose connector and depressor member and a resilient compression seal collar are slidable in the body and the lock lever with trunnions is snapped into...

A compression trimmer for providing a range of capacitance values for an electrical circuit includes a plurality of capacitive plates spaced by one or more dielectric members and mounted on a substantially compliant, high temperature, molded plastic insulating base. The compression trimmer includes an elongated screw received within and threadedly engaging an elongated torque control hole of the compliant base. The length and diameter of the torque control hole may be ajdusted to provide a desir...

An elongate elastomeric vehicle compression spring having a curved body-exterior and incorporating parallel reinforcing cords, and having a surface enbracing a diminishing cross-sectional area extending axially from the end of the body. The surface is in the shape of a truncated cone or curved, extending axially away from the end of the body, or into the body, and it may be located at one end or at both ends of the spring. The cross-section of the spring thus presents increasing amounts of rubbe...

A pressure indicating gauge which utilizes a piston responsive to test pressure to move a diagonally oriented indicator along a longitudinal axis. A display having a transverse slot is located adjacent the indicator. As the diagonally oriented indicator moves longitudinally, it undergoes an apparent transverse travel along the slot, and pressure indicia adjacent the slot provide an indication of the magnitude of the test pressure.

A compression ophthalmodynamometer for measuring blood pressure in the human eye in conjunction with a mercury manometer is disclosed. The instrument includes a handheld rubber compressor bulb having one-way valves for providing air under pressure, an air-pressure-to-proportional-contact-force transducer, and tubes which simultaneously conduct the air under pressure to both the manometer and the transducer. The manometer gives an indication of the pressure of the air while, simultaneously, the t...

The invention is a compression (set down) packer with a slip type hold down actuated by hydraulic pressure from below the packing elements. The packer is full opening and will permit through-tubing operations. Once the packer's downward movement is stopped and the packer elements expanded by conventional means including J-slot pin means for preventing unwanted expanding of the lower slips, pressure from below the packer (applied through the tubing to which the packer is attached) forces a piston...

A data compression apparatus is described having an encoder and a decoder. Data in the form of an N-bit data message from an external data source is received in the encoder and stored in an N-bit memory. Coupled to the memory is a "one's" detector and three arithmetic units. The "one's" detector counts the number of logical "one's" in the N-bit message irrespective of their position in the memory for generating a number Q. The three arithmetic units sum columns of the contents of the memory in t...

A compression coupling for flexible hose, piping or tubing which has an annular sleeve which surrounds the adjacent ends of the tubes or pipes. The sleeve has the form of a circumferentially extensible annular band with an axially extending gap. A jacket member is attached at one end to the sleeve and extends over the gap. An axially extending wrinkle is formed in the jacket member directly over the gap, and a sealant is placed within this wrinkle. Means for clamping the jacket member to the sle...