A text concealing tool assembly for defacing text from a paper includes a handle and a cover that is attached to the handle. A defacing unit is rotatably mounted in the cover. The defacing unit is rolled over a paper to mark and pierce the paper such that writing on the paper is illegible.

A text concealing tool assembly for defacing text from a paper includes a handle and a cover that is attached to the handle. A defacing unit is rotatably mounted in the cover. The defacing unit is rolled over a paper to mark and pierce the paper such that writing on the paper is illegible.

A text concealing tool assembly for defacing text from a paper includes a handle and a cover that is attached to the handle. A defacing unit is rotatably mounted in the cover. The defacing unit is rolled over a paper to mark and pierce the paper such that writing on the paper is illegible

A text concealing tool assembly for defacing text from a paper includes a handle and a cover that is attached to the handle. A defacing unit is rotatably mounted in the cover. The defacing unit is rolled over a paper to mark and pierce the paper such that writing on the paper is illegible

A positioning device for an ink pad container has a body and two elastic sheets. The two elastic sheets are respectively formed on two lateral side surfaces of the body. Each one of the two elastic sheets has an arm and a positioning protrusion. The arm is formed on a corresponding one of the two lateral side surfaces of the body, and is inserted into a corresponding one of two through grooves of the body. The positioning protrusion is formed on an inner side surface of the arm and is inserted into the body. An ink pad container may be firmly positioned into the body by the two elastic sheets. The tolerance allowances of the positioning device and the ink pad container are increased by the resiliences of the two elastic sheets. The positioning device can simultaneously satisfy the requirements for ease in assembly and for the positioning stability.

Some embodiments of a tally stamp device described herein provide a stamp and a counter system. The tally stamp may include an elongate body housing the stamp and counter system.

Some embodiments of a tally stamp device described herein provide a stamp and a counter system. The tally stamp may include an elongate body housing the stamp and counter system.

A present disclosure relates to a stamp for applying to a surface. The stamp includes a stamp type unit. The stamp type unit includes a die bracket, a first elastic element, a second elastic element, and a bearing bracket. The bearing bracket includes a type band and operatively associated with the first elastic element, the second elastic element and the die bracket. The first elastic element and the second elastic element are disposed between the die bracket and the bearing bracket in a manner that the type band is level with respect to the surface.

A method is provided for extending the frequency band of an audio signal during a decoding or improvement process. The method includes obtaining the decoded signal in a first frequency band, referred to as a low band. Tonal components and a surround signal are extracted from the signal from the low-band signal, and the tonal components and the surround signal are combined by adaptive mixing using energy-level control factors to obtain an audio signal, referred to as a combined signal. The low-band decoded signal before the extraction step or the combined signal after the combination step are extended over at least one second frequency band which is higher than the first frequency band. Also proved are a frequency-band extension device which implements the described method and a decoder including a device of this type.

A method is provided for extending the frequency band of an audio signal during a decoding or improvement process. The method includes obtaining the decoded signal in a first frequency band, referred to as a low band. Tonal components and a surround signal are extracted from the signal from the low-band signal, and the tonal components and the surround signal are combined by adaptive mixing using energy-level control factors to obtain an audio signal, referred to as a combined signal. The low-band decoded signal before the extraction step or the combined signal after the combination step are extended over at least one second frequency band which is higher than the first frequency band. Also proved are a frequency-band extension device which implements the described method and a decoder including a device of this type.