Recording apparatus capable of automatically re-writing recording data
AssigneeCanon Kabushiki Kaisha
InventorsJiro Tateyama, Yuichi Watanabe
Life of this patent
Estimating the term…
Abstract
A recording apparatus capable of automatically re-writing recording data includes a recording head for recording images on a recording medium in accordance with recording data; a memory for storing recording data to be supplied to the recording head; an address generating device which generates, with respect to the memory, addresses synchronized with recording performed by the recording head and which reads out the recording data stored in the memory; and a data writing device for writing predetermined data in the memory on the basis of the addresses which have been generated by the address generating device and from which the recording data has been read.
Claims37
A recording apparatus comprising:
- a recording head for recording images on a recording medium in accordance with recording data;
- an addressable memory for storing the recording data to be supplied to said recording head;
- address generating means for generating, with respect to said addressable memory, sequential transfer addresses synchronized with recording performed by said recording head;
- data reading means for reading out the recording data stored in said addressable memory on a basis of the sequential transfer addresses generated by said address generating means;
- and
- data writing means for supplying clear data and for writing the supplied clear data in said addressable memory for each address from which recording data is read for clearing each address from which recording data is read, said data writing means writing the clear data during a same transfer address cycle as a cycle in which the recording data is read from a respective location, so that the clear data is written on a basis of identical addresses as the addresses where the recording data was read.
A recording controller which supplies recording data to a recording head, said controller comprising:
- an addressable buffer memory for storing the recording data;
- an address counter for generating sequential transfer addresses corresponding to recording positions with respect to said buffer memory;
- a read-out circuit for reading the recording data from said addressable buffer memory in accordance with the sequential transfer addresses generated by said address counter;
- an output circuit for supplying the recording data read out by said read-out circuit to said recording head;
- and
- a writing circuit for supplying clear data and for writing the supplied clear data in said addressable buffer memory for each address from which data is read for clearing each address from which recording data is read, said writing circuit writing the clear data during a same transfer address cycle as a cycle in which the recording data is read from a respective location, so that the clear data is written on a basis of identical addresses as the addresses where the recording data was read.
A recording method in which images are recorded on a recording medium with a recording head, said method comprising the steps of:
- supplying sequential transfer addresses to an addressable memory for storing recording data;
- reading the recording data from the addressable memory on a basis of the sequential transfer addresses supplied;
- supplying the read recording data to said recording head to perform recording on the recording medium;
- supplying clear data;
- and
- writing the supplied clear data in the addressable memory for each address from which recording data is read for clearing each address from which recording data is read, said writing being performed during a same transfer address cycle as a cycle in which the recording data is read from a respective location, so that the clear data is written in accordance with addresses which are identical to the addresses sequentially supplied.
A recording apparatus comprising:
- a recording head for recording images on a recording medium in accordance with recording data;
- an addressable memory for storing the recording data to be supplied to said recording head;
- address generating means for sequentially generating addresses corresponding to respective locations in said addressable memory, the generation of addresses being synchronized with the recording performed by said recording head;
- data reading means for reading out the recording data stored in said addressable memory at the locations corresponding to the sequential addresses generated by said address generating means;
- and
- data writing means for supplying clear data and for writing the supplied clear data to each location in said addressable memory following reading out of the recording data stored in the respective location and prior to reading out of the recording data stored in another location for clearing the recording data in each location in said addressable memory.
Dependencies are inferred from the claim text.