Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 6473008 | System for sampling a data signal A sampling system includes an input terminal for receiving a data signal having a signal component and possibly a noise component. A sampler samples the data signal at a sample rate set in responsive to a control signal. A noise detector detects the prese... | 10/29/2002 |
| 6408076 | Digital video broadcasting In order to descramble sections of scrambled data interleaved with sections of unscrambled data in a transport stream of broadcast video data, while leaving the sections with the original timing relationship in the transport stream, a common data flow pat... | 06/18/2002 |
| 6347123 | Low-current sample rate converter A low power sample rate converter adapted for use with a telecommunications system transceiver. The sample rate converter includes a first circuit that provides an input signal characterized by a first sample rate and a delayed version of the input signal... | 02/12/2002 |
| 6211802 | Semiconductor integrated circuit for performing data transfer A semiconductor integrated circuit for performing data transfer integrated circuit includes a first circuit, a second circuit, and first and second data converters. The first circuit outputs data of a plurality of bits. The second circuit receives the dat... | 04/03/2001 |
| 5805931 | Programmable bandwidth I/O port and a communication interface using the same port having a plurality of serial access memories capable of being configured for a variety of protocols A programmable bandwidth I/O port using a DRAM connected to a plurality of serial access memories. Data is synchronously transferred between the DRAM and the serial access memories and is asynchronously transferred between the serial access memories and a... | 09/08/1998 |
| 5703658 | Video decoder/converter with a programmable logic device which is programmed based on the encoding format An apparatus and a method for receiving television signals can display a television signal of a novel signal format, even at a low cost, without addition of any hardware. The apparatus and a method for receiving a television signal employs a data input un... | 12/30/1997 |
| 5638070 | Signal processing method and apparatus for transforming N-bit codes to M-bit codes wherein M is greater than N N-bit digital signals are transformed into M-bit digital signals (M>N), the N-bit signals being obtained by converting an analog signal into digital signals. Detected are transition points on a time axis and intervals between the transition points at whic... | 06/10/1997 |
| 5608759 | Information storage apparatus In a digital communication network in which pieces of information having different PCM coding rules are present, an information storage apparatus includes a control unit, a storage unit, and at least one transconverter. The control unit includes a compara... | 03/04/1997 |
| 4841298 | Bit pattern conversion system A bit pattern conversion system for converting a sequence of a bit pattern between a central processing unit and a peripheral circuit, including a data bus line connected between the central processing unit and the peripheral circuit, and a conversion cir... | 06/20/1989 |
| 4782387 | Two-channel coding of digital signals A video codec is used to reduce the bandwidth of a video signal for storage and/or transmission. To transmit an uncoded quality color NTSC television signal is digitized form requires channel bandwidth typically 90-120 Mb/s for the signal in the composite... | 11/01/1988 |
| 4433327 | Apparatus for converting numeral representing data coding formats received or derived by a central processing unit Numeral representing signals are converted between data coding formats employed externally and internally of a central processing unit of a data processing system. By a treatment internal to the central processing unit, a numeral representing signal suppl... | 02/21/1984 |
| 4426166 | Modular printer with coded plug compatible modules A daisywheel printer having interchangeable modules for different respective communications with alternate corresponding plug-in connections.... | 01/17/1984 |
| 4420771 | Technique for encoding multi-level signals A series of words each representing one of at least M (Mࣙ3) different values is encoded by grouping the words into alternate runs of (1) a first, frequently occurring value, and (2) all other values. A coded representation of each run length as well as ... | 12/13/1983 |
| 4317111 | Digital device for synchronizing and decoding coded signals A digital device generates a local frequency and phase signal adapted for the conversion of one of a plurality of codified signals into binary code. The received codified signals are continuously stored in a shift register which is able to contain the sig... | 02/23/1982 |
| 4283789 | Data transmission method and devices for practicing said method Binary/ternary transmission process and device. Several trains of binary signals are time-multiplexed by using registers RG1 and SER to generate a first binary sequence L applied to an ENCODE unit which also receives a second binary sequence D and clock i... | 08/11/1981 |
| 4282514 | Electronic converter An electronic converter for converting numbers between two numeric systems, as for example, from the English to the metric systems. The converter comprises a dual keyboard for entering a number represented by a succession of digits and two calculators eac... | 08/04/1981 |
| 4276544 | Code converting circuits Code converting circuits for facsimile and other information communications systems in which run length codes are converted to codes having variable lengths and the variable length codes are converted into a word code train, wherein each word comprises N ... | 06/30/1981 |
| 4216460 | Transmission and/or recording of digital signals A digital processing system is disclosed, including an analog to digital converter for converting an analog signal into digital signals in the form of words each made up of a plurality of binary digits, and an encoding device for transforming the digital ... | 08/05/1980 |
| 4177455 | Electrically configurable high-low decoder An electrically configurable decoder including selectively configurable combinations of a plurality of basic decode circuits. The electrically configurable decoder includes a plurality of mode selection inputs, a plurality of address inputs, a plurality o... | 12/04/1979 |
| 4134536 | Electronic data processing equipment Disclosed is an electronic data processing equipment for specifying and identifying the radices or units of numeric data entered and converting them into numbers in predetermined radices or units so that arithmetic operations are carried out between the n... | 01/16/1979 |
| 4121760 | Electronic multibase calculator A selectively alterable base numerical system in which a calculator implemented in a few semiconductor chips has a keyboard to enter numeric data and to command functions to be performed on the data by circuitry on the semiconductor chips in a first numbe... | 10/24/1978 |
| 4100602 | Recipe conversion calculator To permit a cook to easily adapt an existing recipe, a calculator includes logic circuitry for calculating and storing the ratio of servings desired to servings stated in the recipe. The calculator also includes a keyboard for entering the quantity of eac... | 07/11/1978 |
| 4092523 | Conversion calculator Electronic calculator for automatically converting numerical data representative of a valve expressed in an initial one of a plurality of variably related units to numerical data representative of the same value expressed in any other one of said pluralit... | 05/30/1978 |
| 4081859 | Electronic calculator for feet-inch-fraction numerics An apparatus is disclosed for automatically adding, subtracting, multiplying and dividing feet, inches and fractions of an inch and for the recordation of the results of said arithmetic functions on a visual display. The apparatus also automatically and d... | 03/28/1978 |
| 4044306 | Digital converter from pulse code modulation to continuous variable slope delta modulation A digital converter for digitally converting a coded signal being at a PCM rate into another coded signal flowing at a delta rate. First, the code of the PCM signal is converted into an intermediate code, this intermediate code being at a rate correspondi... | 08/23/1977 |
| 3980809 | Encoding logic for reduced bandwidth pictorial data transmission system The present invention relates to pictorial data transmission systems for transmitting fixed images from one point to another. The invention employs two modes for encoding successive blocks of elements (typically four elements by four elements). If a data ... | 09/14/1976 |
| 3971891 | Adaptable time division switch A switching network is disclosed that is capable of handling analog, PCM and CVSD signals connected to said network via loops or trunks. All signals are converted into CVSD format, synchronized to the network clocks, and switching is carried out on a time... | 07/27/1976 |
